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-<?php

-/**

- * PHPExcel

- *

- * Copyright (c) 2006 - 2012 PHPExcel

- *

- * This library is free software; you can redistribute it and/or

- * modify it under the terms of the GNU Lesser General Public

- * License as published by the Free Software Foundation; either

- * version 2.1 of the License, or (at your option) any later version.

- *

- * This library is distributed in the hope that it will be useful,

- * but WITHOUT ANY WARRANTY; without even the implied warranty of

- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU

- * Lesser General Public License for more details.

- *

- * You should have received a copy of the GNU Lesser General Public

- * License along with this library; if not, write to the Free Software

- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA

- *

- * @category	PHPExcel

- * @package		PHPExcel_Calculation

- * @copyright	Copyright (c) 2006 - 2012 PHPExcel (http://www.codeplex.com/PHPExcel)

- * @license		http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL

- * @version		1.7.8, 2012-10-12

- */

-

-

-/** PHPExcel root directory */

-if (!defined('PHPEXCEL_ROOT')) {

-	/**

-	 * @ignore

-	 */

-	define('PHPEXCEL_ROOT', dirname(__FILE__) . '/../../');

-	require(PHPEXCEL_ROOT . 'PHPExcel/Autoloader.php');

-}

-

-

-/**

- * PHPExcel_Calculation_Database

- *

- * @category	PHPExcel

- * @package		PHPExcel_Calculation

- * @copyright	Copyright (c) 2006 - 2012 PHPExcel (http://www.codeplex.com/PHPExcel)

- */

-class PHPExcel_Calculation_Database {

-

-

-	/**

-	 * __fieldExtract

-	 *

-	 * Extracts the column ID to use for the data field.

-	 *

-	 * @access	private

-	 * @param	mixed[]		$database		The range of cells that makes up the list or database.

-	 *										A database is a list of related data in which rows of related

-	 *										information are records, and columns of data are fields. The

-	 *										first row of the list contains labels for each column.

-	 * @param	mixed		$field			Indicates which column is used in the function. Enter the

-	 *										column label enclosed between double quotation marks, such as

-	 *										"Age" or "Yield," or a number (without quotation marks) that

-	 *										represents the position of the column within the list: 1 for

-	 *										the first column, 2 for the second column, and so on.

-	 * @return	string|NULL

-	 *

-	 */

-	private static function __fieldExtract($database,$field) {

-		$field = strtoupper(PHPExcel_Calculation_Functions::flattenSingleValue($field));

-		$fieldNames = array_map('strtoupper',array_shift($database));

-

-		if (is_numeric($field)) {

-			$keys = array_keys($fieldNames);

-			return $keys[$field-1];

-		}

-		$key = array_search($field,$fieldNames);

-		return ($key) ? $key : NULL;

-	}

-

-	/**

-	 * __filter

-	 *

-	 * Parses the selection criteria, extracts the database rows that match those criteria, and

-	 * returns that subset of rows.

-	 *

-	 * @access	private

-	 * @param	mixed[]		$database		The range of cells that makes up the list or database.

-	 *										A database is a list of related data in which rows of related

-	 *										information are records, and columns of data are fields. The

-	 *										first row of the list contains labels for each column.

-	 * @param	mixed[]		$criteria		The range of cells that contains the conditions you specify.

-	 *										You can use any range for the criteria argument, as long as it

-	 *										includes at least one column label and at least one cell below

-	 *										the column label in which you specify a condition for the

-	 *										column.

-	 * @return	array of mixed

-	 *

-	 */

-	private static function __filter($database,$criteria) {

-		$fieldNames = array_shift($database);

-		$criteriaNames = array_shift($criteria);

-

-		//	Convert the criteria into a set of AND/OR conditions with [:placeholders]

-		$testConditions = $testValues = array();

-		$testConditionsCount = 0;

-		foreach($criteriaNames as $key => $criteriaName) {

-			$testCondition = array();

-			$testConditionCount = 0;

-			foreach($criteria as $row => $criterion) {

-				if ($criterion[$key] > '') {

-					$testCondition[] = '[:'.$criteriaName.']'.PHPExcel_Calculation_Functions::_ifCondition($criterion[$key]);

-					$testConditionCount++;

-				}

-			}

-			if ($testConditionCount > 1) {

-				$testConditions[] = 'OR('.implode(',',$testCondition).')';

-				$testConditionsCount++;

-			} elseif($testConditionCount == 1) {

-				$testConditions[] = $testCondition[0];

-				$testConditionsCount++;

-			}

-		}

-

-		if ($testConditionsCount > 1) {

-			$testConditionSet = 'AND('.implode(',',$testConditions).')';

-		} elseif($testConditionsCount == 1) {

-			$testConditionSet = $testConditions[0];

-		}

-

-		//	Loop through each row of the database

-		foreach($database as $dataRow => $dataValues) {

-			//	Substitute actual values from the database row for our [:placeholders]

-			$testConditionList = $testConditionSet;

-			foreach($criteriaNames as $key => $criteriaName) {

-				$k = array_search($criteriaName,$fieldNames);

-				if (isset($dataValues[$k])) {

-					$dataValue = $dataValues[$k];

-					$dataValue = (is_string($dataValue)) ? PHPExcel_Calculation::_wrapResult(strtoupper($dataValue)) : $dataValue;

-					$testConditionList = str_replace('[:'.$criteriaName.']',$dataValue,$testConditionList);

-				}

-			}

-			//	evaluate the criteria against the row data

-			$result = PHPExcel_Calculation::getInstance()->_calculateFormulaValue('='.$testConditionList);

-			//	If the row failed to meet the criteria, remove it from the database

-			if (!$result) {

-				unset($database[$dataRow]);

-			}

-		}

-

-		return $database;

-	}

-

-

-	/**

-	 * DAVERAGE

-	 *

-	 * Averages the values in a column of a list or database that match conditions you specify.

-	 *

-	 * Excel Function:

-	 *		DAVERAGE(database,field,criteria)

-	 *

-	 * @access	public

-	 * @category Database Functions

-	 * @param	mixed[]			$database	The range of cells that makes up the list or database.

-	 *										A database is a list of related data in which rows of related

-	 *										information are records, and columns of data are fields. The

-	 *										first row of the list contains labels for each column.

-	 * @param	string|integer	$field		Indicates which column is used in the function. Enter the

-	 *										column label enclosed between double quotation marks, such as

-	 *										"Age" or "Yield," or a number (without quotation marks) that

-	 *										represents the position of the column within the list: 1 for

-	 *										the first column, 2 for the second column, and so on.

-	 * @param	mixed[]			$criteria	The range of cells that contains the conditions you specify.

-	 *										You can use any range for the criteria argument, as long as it

-	 *										includes at least one column label and at least one cell below

-	 *										the column label in which you specify a condition for the

-	 *										column.

-	 * @return	float

-	 *

-	 */

-	public static function DAVERAGE($database,$field,$criteria) {

-		$field = self::__fieldExtract($database,$field);

-		if (is_null($field)) {

-			return NULL;

-		}

-		//	reduce the database to a set of rows that match all the criteria

-		$database = self::__filter($database,$criteria);

-		//	extract an array of values for the requested column

-		$colData = array();

-		foreach($database as $row) {

-			$colData[] = $row[$field];

-		}

-

-		// Return

-		return PHPExcel_Calculation_Statistical::AVERAGE($colData);

-	}	//	function DAVERAGE()

-

-

-	/**

-	 * DCOUNT

-	 *

-	 * Counts the cells that contain numbers in a column of a list or database that match conditions

-	 * that you specify.

-	 *

-	 * Excel Function:

-	 *		DCOUNT(database,[field],criteria)

-	 *

-	 * Excel Function:

-	 *		DAVERAGE(database,field,criteria)

-	 *

-	 * @access	public

-	 * @category Database Functions

-	 * @param	mixed[]			$database	The range of cells that makes up the list or database.

-	 *										A database is a list of related data in which rows of related

-	 *										information are records, and columns of data are fields. The

-	 *										first row of the list contains labels for each column.

-	 * @param	string|integer	$field		Indicates which column is used in the function. Enter the

-	 *										column label enclosed between double quotation marks, such as

-	 *										"Age" or "Yield," or a number (without quotation marks) that

-	 *										represents the position of the column within the list: 1 for

-	 *										the first column, 2 for the second column, and so on.

-	 * @param	mixed[]			$criteria	The range of cells that contains the conditions you specify.

-	 *										You can use any range for the criteria argument, as long as it

-	 *										includes at least one column label and at least one cell below

-	 *										the column label in which you specify a condition for the

-	 *										column.

-	 * @return	integer

-	 *

-	 * @TODO	The field argument is optional. If field is omitted, DCOUNT counts all records in the

-	 *			database that match the criteria.

-	 *

-	 */

-	public static function DCOUNT($database,$field,$criteria) {

-		$field = self::__fieldExtract($database,$field);

-		if (is_null($field)) {

-			return NULL;

-		}

-

-		//	reduce the database to a set of rows that match all the criteria

-		$database = self::__filter($database,$criteria);

-		//	extract an array of values for the requested column

-		$colData = array();

-		foreach($database as $row) {

-			$colData[] = $row[$field];

-		}

-

-		// Return

-		return PHPExcel_Calculation_Statistical::COUNT($colData);

-	}	//	function DCOUNT()

-

-

-	/**

-	 * DCOUNTA

-	 *

-	 * Counts the nonblank cells in a column of a list or database that match conditions that you specify.

-	 *

-	 * Excel Function:

-	 *		DCOUNTA(database,[field],criteria)

-	 *

-	 * @access	public

-	 * @category Database Functions

-	 * @param	mixed[]			$database	The range of cells that makes up the list or database.

-	 *										A database is a list of related data in which rows of related

-	 *										information are records, and columns of data are fields. The

-	 *										first row of the list contains labels for each column.

-	 * @param	string|integer	$field		Indicates which column is used in the function. Enter the

-	 *										column label enclosed between double quotation marks, such as

-	 *										"Age" or "Yield," or a number (without quotation marks) that

-	 *										represents the position of the column within the list: 1 for

-	 *										the first column, 2 for the second column, and so on.

-	 * @param	mixed[]			$criteria	The range of cells that contains the conditions you specify.

-	 *										You can use any range for the criteria argument, as long as it

-	 *										includes at least one column label and at least one cell below

-	 *										the column label in which you specify a condition for the

-	 *										column.

-	 * @return	integer

-	 *

-	 * @TODO	The field argument is optional. If field is omitted, DCOUNTA counts all records in the

-	 *			database that match the criteria.

-	 *

-	 */

-	public static function DCOUNTA($database,$field,$criteria) {

-		$field = self::__fieldExtract($database,$field);

-		if (is_null($field)) {

-			return NULL;

-		}

-

-		//	reduce the database to a set of rows that match all the criteria

-		$database = self::__filter($database,$criteria);

-		//	extract an array of values for the requested column

-		$colData = array();

-		foreach($database as $row) {

-			$colData[] = $row[$field];

-		}

-

-		// Return

-		return PHPExcel_Calculation_Statistical::COUNTA($colData);

-	}	//	function DCOUNTA()

-

-

-	/**

-	 * DGET

-	 *

-	 * Extracts a single value from a column of a list or database that matches conditions that you

-	 * specify.

-	 *

-	 * Excel Function:

-	 *		DGET(database,field,criteria)

-	 *

-	 * @access	public

-	 * @category Database Functions

-	 * @param	mixed[]			$database	The range of cells that makes up the list or database.

-	 *										A database is a list of related data in which rows of related

-	 *										information are records, and columns of data are fields. The

-	 *										first row of the list contains labels for each column.

-	 * @param	string|integer	$field		Indicates which column is used in the function. Enter the

-	 *										column label enclosed between double quotation marks, such as

-	 *										"Age" or "Yield," or a number (without quotation marks) that

-	 *										represents the position of the column within the list: 1 for

-	 *										the first column, 2 for the second column, and so on.

-	 * @param	mixed[]			$criteria	The range of cells that contains the conditions you specify.

-	 *										You can use any range for the criteria argument, as long as it

-	 *										includes at least one column label and at least one cell below

-	 *										the column label in which you specify a condition for the

-	 *										column.

-	 * @return	mixed

-	 *

-	 */

-	public static function DGET($database,$field,$criteria) {

-		$field = self::__fieldExtract($database,$field);

-		if (is_null($field)) {

-			return NULL;

-		}

-

-		//	reduce the database to a set of rows that match all the criteria

-		$database = self::__filter($database,$criteria);

-		//	extract an array of values for the requested column

-		$colData = array();

-		foreach($database as $row) {

-			$colData[] = $row[$field];

-		}

-

-		// Return

-		if (count($colData) > 1) {

-			return PHPExcel_Calculation_Functions::NaN();

-		}

-

-		return $colData[0];

-	}	//	function DGET()

-

-

-	/**

-	 * DMAX

-	 *

-	 * Returns the largest number in a column of a list or database that matches conditions you that

-	 * specify.

-	 *

-	 * Excel Function:

-	 *		DMAX(database,field,criteria)

-	 *

-	 * @access	public

-	 * @category Database Functions

-	 * @param	mixed[]			$database	The range of cells that makes up the list or database.

-	 *										A database is a list of related data in which rows of related

-	 *										information are records, and columns of data are fields. The

-	 *										first row of the list contains labels for each column.

-	 * @param	string|integer	$field		Indicates which column is used in the function. Enter the

-	 *										column label enclosed between double quotation marks, such as

-	 *										"Age" or "Yield," or a number (without quotation marks) that

-	 *										represents the position of the column within the list: 1 for

-	 *										the first column, 2 for the second column, and so on.

-	 * @param	mixed[]			$criteria	The range of cells that contains the conditions you specify.

-	 *										You can use any range for the criteria argument, as long as it

-	 *										includes at least one column label and at least one cell below

-	 *										the column label in which you specify a condition for the

-	 *										column.

-	 * @return	float

-	 *

-	 */

-	public static function DMAX($database,$field,$criteria) {

-		$field = self::__fieldExtract($database,$field);

-		if (is_null($field)) {

-			return NULL;

-		}

-

-		//	reduce the database to a set of rows that match all the criteria

-		$database = self::__filter($database,$criteria);

-		//	extract an array of values for the requested column

-		$colData = array();

-		foreach($database as $row) {

-			$colData[] = $row[$field];

-		}

-

-		// Return

-		return PHPExcel_Calculation_Statistical::MAX($colData);

-	}	//	function DMAX()

-

-

-	/**

-	 * DMIN

-	 *

-	 * Returns the smallest number in a column of a list or database that matches conditions you that

-	 * specify.

-	 *

-	 * Excel Function:

-	 *		DMIN(database,field,criteria)

-	 *

-	 * @access	public

-	 * @category Database Functions

-	 * @param	mixed[]			$database	The range of cells that makes up the list or database.

-	 *										A database is a list of related data in which rows of related

-	 *										information are records, and columns of data are fields. The

-	 *										first row of the list contains labels for each column.

-	 * @param	string|integer	$field		Indicates which column is used in the function. Enter the

-	 *										column label enclosed between double quotation marks, such as

-	 *										"Age" or "Yield," or a number (without quotation marks) that

-	 *										represents the position of the column within the list: 1 for

-	 *										the first column, 2 for the second column, and so on.

-	 * @param	mixed[]			$criteria	The range of cells that contains the conditions you specify.

-	 *										You can use any range for the criteria argument, as long as it

-	 *										includes at least one column label and at least one cell below

-	 *										the column label in which you specify a condition for the

-	 *										column.

-	 * @return	float

-	 *

-	 */

-	public static function DMIN($database,$field,$criteria) {

-		$field = self::__fieldExtract($database,$field);

-		if (is_null($field)) {

-			return NULL;

-		}

-

-		//	reduce the database to a set of rows that match all the criteria

-		$database = self::__filter($database,$criteria);

-		//	extract an array of values for the requested column

-		$colData = array();

-		foreach($database as $row) {

-			$colData[] = $row[$field];

-		}

-

-		// Return

-		return PHPExcel_Calculation_Statistical::MIN($colData);

-	}	//	function DMIN()

-

-

-	/**

-	 * DPRODUCT

-	 *

-	 * Multiplies the values in a column of a list or database that match conditions that you specify.

-	 *

-	 * Excel Function:

-	 *		DPRODUCT(database,field,criteria)

-	 *

-	 * @access	public

-	 * @category Database Functions

-	 * @param	mixed[]			$database	The range of cells that makes up the list or database.

-	 *										A database is a list of related data in which rows of related

-	 *										information are records, and columns of data are fields. The

-	 *										first row of the list contains labels for each column.

-	 * @param	string|integer	$field		Indicates which column is used in the function. Enter the

-	 *										column label enclosed between double quotation marks, such as

-	 *										"Age" or "Yield," or a number (without quotation marks) that

-	 *										represents the position of the column within the list: 1 for

-	 *										the first column, 2 for the second column, and so on.

-	 * @param	mixed[]			$criteria	The range of cells that contains the conditions you specify.

-	 *										You can use any range for the criteria argument, as long as it

-	 *										includes at least one column label and at least one cell below

-	 *										the column label in which you specify a condition for the

-	 *										column.

-	 * @return	float

-	 *

-	 */

-	public static function DPRODUCT($database,$field,$criteria) {

-		$field = self::__fieldExtract($database,$field);

-		if (is_null($field)) {

-			return NULL;

-		}

-

-		//	reduce the database to a set of rows that match all the criteria

-		$database = self::__filter($database,$criteria);

-		//	extract an array of values for the requested column

-		$colData = array();

-		foreach($database as $row) {

-			$colData[] = $row[$field];

-		}

-

-		// Return

-		return PHPExcel_Calculation_MathTrig::PRODUCT($colData);

-	}	//	function DPRODUCT()

-

-

-	/**

-	 * DSTDEV

-	 *

-	 * Estimates the standard deviation of a population based on a sample by using the numbers in a

-	 * column of a list or database that match conditions that you specify.

-	 *

-	 * Excel Function:

-	 *		DSTDEV(database,field,criteria)

-	 *

-	 * @access	public

-	 * @category Database Functions

-	 * @param	mixed[]			$database	The range of cells that makes up the list or database.

-	 *										A database is a list of related data in which rows of related

-	 *										information are records, and columns of data are fields. The

-	 *										first row of the list contains labels for each column.

-	 * @param	string|integer	$field		Indicates which column is used in the function. Enter the

-	 *										column label enclosed between double quotation marks, such as

-	 *										"Age" or "Yield," or a number (without quotation marks) that

-	 *										represents the position of the column within the list: 1 for

-	 *										the first column, 2 for the second column, and so on.

-	 * @param	mixed[]			$criteria	The range of cells that contains the conditions you specify.

-	 *										You can use any range for the criteria argument, as long as it

-	 *										includes at least one column label and at least one cell below

-	 *										the column label in which you specify a condition for the

-	 *										column.

-	 * @return	float

-	 *

-	 */

-	public static function DSTDEV($database,$field,$criteria) {

-		$field = self::__fieldExtract($database,$field);

-		if (is_null($field)) {

-			return NULL;

-		}

-

-		//	reduce the database to a set of rows that match all the criteria

-		$database = self::__filter($database,$criteria);

-		//	extract an array of values for the requested column

-		$colData = array();

-		foreach($database as $row) {

-			$colData[] = $row[$field];

-		}

-

-		// Return

-		return PHPExcel_Calculation_Statistical::STDEV($colData);

-	}	//	function DSTDEV()

-

-

-	/**

-	 * DSTDEVP

-	 *

-	 * Calculates the standard deviation of a population based on the entire population by using the

-	 * numbers in a column of a list or database that match conditions that you specify.

-	 *

-	 * Excel Function:

-	 *		DSTDEVP(database,field,criteria)

-	 *

-	 * @access	public

-	 * @category Database Functions

-	 * @param	mixed[]			$database	The range of cells that makes up the list or database.

-	 *										A database is a list of related data in which rows of related

-	 *										information are records, and columns of data are fields. The

-	 *										first row of the list contains labels for each column.

-	 * @param	string|integer	$field		Indicates which column is used in the function. Enter the

-	 *										column label enclosed between double quotation marks, such as

-	 *										"Age" or "Yield," or a number (without quotation marks) that

-	 *										represents the position of the column within the list: 1 for

-	 *										the first column, 2 for the second column, and so on.

-	 * @param	mixed[]			$criteria	The range of cells that contains the conditions you specify.

-	 *										You can use any range for the criteria argument, as long as it

-	 *										includes at least one column label and at least one cell below

-	 *										the column label in which you specify a condition for the

-	 *										column.

-	 * @return	float

-	 *

-	 */

-	public static function DSTDEVP($database,$field,$criteria) {

-		$field = self::__fieldExtract($database,$field);

-		if (is_null($field)) {

-			return NULL;

-		}

-

-		//	reduce the database to a set of rows that match all the criteria

-		$database = self::__filter($database,$criteria);

-		//	extract an array of values for the requested column

-		$colData = array();

-		foreach($database as $row) {

-			$colData[] = $row[$field];

-		}

-

-		// Return

-		return PHPExcel_Calculation_Statistical::STDEVP($colData);

-	}	//	function DSTDEVP()

-

-

-	/**

-	 * DSUM

-	 *

-	 * Adds the numbers in a column of a list or database that match conditions that you specify.

-	 *

-	 * Excel Function:

-	 *		DSUM(database,field,criteria)

-	 *

-	 * @access	public

-	 * @category Database Functions

-	 * @param	mixed[]			$database	The range of cells that makes up the list or database.

-	 *										A database is a list of related data in which rows of related

-	 *										information are records, and columns of data are fields. The

-	 *										first row of the list contains labels for each column.

-	 * @param	string|integer	$field		Indicates which column is used in the function. Enter the

-	 *										column label enclosed between double quotation marks, such as

-	 *										"Age" or "Yield," or a number (without quotation marks) that

-	 *										represents the position of the column within the list: 1 for

-	 *										the first column, 2 for the second column, and so on.

-	 * @param	mixed[]			$criteria	The range of cells that contains the conditions you specify.

-	 *										You can use any range for the criteria argument, as long as it

-	 *										includes at least one column label and at least one cell below

-	 *										the column label in which you specify a condition for the

-	 *										column.

-	 * @return	float

-	 *

-	 */

-	public static function DSUM($database,$field,$criteria) {

-		$field = self::__fieldExtract($database,$field);

-		if (is_null($field)) {

-			return NULL;

-		}

-

-		//	reduce the database to a set of rows that match all the criteria

-		$database = self::__filter($database,$criteria);

-		//	extract an array of values for the requested column

-		$colData = array();

-		foreach($database as $row) {

-			$colData[] = $row[$field];

-		}

-

-		// Return

-		return PHPExcel_Calculation_MathTrig::SUM($colData);

-	}	//	function DSUM()

-

-

-	/**

-	 * DVAR

-	 *

-	 * Estimates the variance of a population based on a sample by using the numbers in a column

-	 * of a list or database that match conditions that you specify.

-	 *

-	 * Excel Function:

-	 *		DVAR(database,field,criteria)

-	 *

-	 * @access	public

-	 * @category Database Functions

-	 * @param	mixed[]			$database	The range of cells that makes up the list or database.

-	 *										A database is a list of related data in which rows of related

-	 *										information are records, and columns of data are fields. The

-	 *										first row of the list contains labels for each column.

-	 * @param	string|integer	$field		Indicates which column is used in the function. Enter the

-	 *										column label enclosed between double quotation marks, such as

-	 *										"Age" or "Yield," or a number (without quotation marks) that

-	 *										represents the position of the column within the list: 1 for

-	 *										the first column, 2 for the second column, and so on.

-	 * @param	mixed[]			$criteria	The range of cells that contains the conditions you specify.

-	 *										You can use any range for the criteria argument, as long as it

-	 *										includes at least one column label and at least one cell below

-	 *										the column label in which you specify a condition for the

-	 *										column.

-	 * @return	float

-	 *

-	 */

-	public static function DVAR($database,$field,$criteria) {

-		$field = self::__fieldExtract($database,$field);

-		if (is_null($field)) {

-			return NULL;

-		}

-

-		//	reduce the database to a set of rows that match all the criteria

-		$database = self::__filter($database,$criteria);

-		//	extract an array of values for the requested column

-		$colData = array();

-		foreach($database as $row) {

-			$colData[] = $row[$field];

-		}

-

-		// Return

-		return PHPExcel_Calculation_Statistical::VARFunc($colData);

-	}	//	function DVAR()

-

-

-	/**

-	 * DVARP

-	 *

-	 * Calculates the variance of a population based on the entire population by using the numbers

-	 * in a column of a list or database that match conditions that you specify.

-	 *

-	 * Excel Function:

-	 *		DVARP(database,field,criteria)

-	 *

-	 * @access	public

-	 * @category Database Functions

-	 * @param	mixed[]			$database	The range of cells that makes up the list or database.

-	 *										A database is a list of related data in which rows of related

-	 *										information are records, and columns of data are fields. The

-	 *										first row of the list contains labels for each column.

-	 * @param	string|integer	$field		Indicates which column is used in the function. Enter the

-	 *										column label enclosed between double quotation marks, such as

-	 *										"Age" or "Yield," or a number (without quotation marks) that

-	 *										represents the position of the column within the list: 1 for

-	 *										the first column, 2 for the second column, and so on.

-	 * @param	mixed[]			$criteria	The range of cells that contains the conditions you specify.

-	 *										You can use any range for the criteria argument, as long as it

-	 *										includes at least one column label and at least one cell below

-	 *										the column label in which you specify a condition for the

-	 *										column.

-	 * @return	float

-	 *

-	 */

-	public static function DVARP($database,$field,$criteria) {

-		$field = self::__fieldExtract($database,$field);

-		if (is_null($field)) {

-			return NULL;

-		}

-

-		//	reduce the database to a set of rows that match all the criteria

-		$database = self::__filter($database,$criteria);

-		//	extract an array of values for the requested column

-		$colData = array();

-		foreach($database as $row) {

-			$colData[] = $row[$field];

-		}

-

-		// Return

-		return PHPExcel_Calculation_Statistical::VARP($colData);

-	}	//	function DVARP()

-

-

-}	//	class PHPExcel_Calculation_Database

diff --git a/admin/survey/excel/PHPExcel/Calculation/DateTime.php b/admin/survey/excel/PHPExcel/Calculation/DateTime.php
deleted file mode 100644
index d6e50cc..0000000
--- a/admin/survey/excel/PHPExcel/Calculation/DateTime.php
+++ /dev/null
@@ -1,1447 +0,0 @@
-<?php

-/**

- * PHPExcel

- *

- * Copyright (c) 2006 - 2012 PHPExcel

- *

- * This library is free software; you can redistribute it and/or

- * modify it under the terms of the GNU Lesser General Public

- * License as published by the Free Software Foundation; either

- * version 2.1 of the License, or (at your option) any later version.

- *

- * This library is distributed in the hope that it will be useful,

- * but WITHOUT ANY WARRANTY; without even the implied warranty of

- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU

- * Lesser General Public License for more details.

- *

- * You should have received a copy of the GNU Lesser General Public

- * License along with this library; if not, write to the Free Software

- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA

- *

- * @category	PHPExcel

- * @package		PHPExcel_Calculation

- * @copyright	Copyright (c) 2006 - 2012 PHPExcel (http://www.codeplex.com/PHPExcel)

- * @license		http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL

- * @version		1.7.8, 2012-10-12

- */

-

-

-/** PHPExcel root directory */

-if (!defined('PHPEXCEL_ROOT')) {

-	/**

-	 * @ignore

-	 */

-	define('PHPEXCEL_ROOT', dirname(__FILE__) . '/../../');

-	require(PHPEXCEL_ROOT . 'PHPExcel/Autoloader.php');

-}

-

-

-/**

- * PHPExcel_Calculation_DateTime

- *

- * @category	PHPExcel

- * @package		PHPExcel_Calculation

- * @copyright	Copyright (c) 2006 - 2012 PHPExcel (http://www.codeplex.com/PHPExcel)

- */

-class PHPExcel_Calculation_DateTime {

-

-	/**

-	 * Identify if a year is a leap year or not

-	 *

-	 * @param	integer	$year	The year to test

-	 * @return	boolean			TRUE if the year is a leap year, otherwise FALSE

-	 */

-	public static function _isLeapYear($year) {

-		return ((($year % 4) == 0) && (($year % 100) != 0) || (($year % 400) == 0));

-	}	//	function _isLeapYear()

-

-

-	private static function _dateDiff360($startDay, $startMonth, $startYear, $endDay, $endMonth, $endYear, $methodUS) {

-		if ($startDay == 31) {

-			--$startDay;

-		} elseif ($methodUS && ($startMonth == 2 && ($startDay == 29 || ($startDay == 28 && !self::_isLeapYear($startYear))))) {

-			$startDay = 30;

-		}

-		if ($endDay == 31) {

-			if ($methodUS && $startDay != 30) {

-				$endDay = 1;

-				if ($endMonth == 12) {

-					++$endYear;

-					$endMonth = 1;

-				} else {

-					++$endMonth;

-				}

-			} else {

-				$endDay = 30;

-			}

-		}

-

-		return $endDay + $endMonth * 30 + $endYear * 360 - $startDay - $startMonth * 30 - $startYear * 360;

-	}	//	function _dateDiff360()

-

-

-	/**

-	 * _getDateValue

-	 *

-	 * @param	string	$dateValue

-	 * @return	mixed	Excel date/time serial value, or string if error

-	 */

-	public static function _getDateValue($dateValue) {

-		if (!is_numeric($dateValue)) {

-			if ((is_string($dateValue)) &&

-				(PHPExcel_Calculation_Functions::getCompatibilityMode() == PHPExcel_Calculation_Functions::COMPATIBILITY_GNUMERIC)) {

-				return PHPExcel_Calculation_Functions::VALUE();

-			}

-			if ((is_object($dateValue)) && ($dateValue instanceof PHPExcel_Shared_Date::$dateTimeObjectType)) {

-				$dateValue = PHPExcel_Shared_Date::PHPToExcel($dateValue);

-			} else {

-				$saveReturnDateType = PHPExcel_Calculation_Functions::getReturnDateType();

-				PHPExcel_Calculation_Functions::setReturnDateType(PHPExcel_Calculation_Functions::RETURNDATE_EXCEL);

-				$dateValue = self::DATEVALUE($dateValue);

-				PHPExcel_Calculation_Functions::setReturnDateType($saveReturnDateType);

-			}

-		}

-		return $dateValue;

-	}	//	function _getDateValue()

-

-

-	/**

-	 * _getTimeValue

-	 *

-	 * @param	string	$timeValue

-	 * @return	mixed	Excel date/time serial value, or string if error

-	 */

-	private static function _getTimeValue($timeValue) {

-		$saveReturnDateType = PHPExcel_Calculation_Functions::getReturnDateType();

-		PHPExcel_Calculation_Functions::setReturnDateType(PHPExcel_Calculation_Functions::RETURNDATE_EXCEL);

-		$timeValue = self::TIMEVALUE($timeValue);

-		PHPExcel_Calculation_Functions::setReturnDateType($saveReturnDateType);

-		return $timeValue;

-	}	//	function _getTimeValue()

-

-

-	private static function _adjustDateByMonths($dateValue = 0, $adjustmentMonths = 0) {

-		// Execute function

-		$PHPDateObject = PHPExcel_Shared_Date::ExcelToPHPObject($dateValue);

-		$oMonth = (int) $PHPDateObject->format('m');

-		$oYear = (int) $PHPDateObject->format('Y');

-

-		$adjustmentMonthsString = (string) $adjustmentMonths;

-		if ($adjustmentMonths > 0) {

-			$adjustmentMonthsString = '+'.$adjustmentMonths;

-		}

-		if ($adjustmentMonths != 0) {

-			$PHPDateObject->modify($adjustmentMonthsString.' months');

-		}

-		$nMonth = (int) $PHPDateObject->format('m');

-		$nYear = (int) $PHPDateObject->format('Y');

-

-		$monthDiff = ($nMonth - $oMonth) + (($nYear - $oYear) * 12);

-		if ($monthDiff != $adjustmentMonths) {

-			$adjustDays = (int) $PHPDateObject->format('d');

-			$adjustDaysString = '-'.$adjustDays.' days';

-			$PHPDateObject->modify($adjustDaysString);

-		}

-		return $PHPDateObject;

-	}	//	function _adjustDateByMonths()

-

-

-	/**

-	 * DATETIMENOW

-	 *

-	 * Returns the current date and time.

-	 * The NOW function is useful when you need to display the current date and time on a worksheet or

-	 * calculate a value based on the current date and time, and have that value updated each time you

-	 * open the worksheet.

-	 *

-	 * NOTE: When used in a Cell Formula, MS Excel changes the cell format so that it matches the date

-	 * and time format of your regional settings. PHPExcel does not change cell formatting in this way.

-	 *

-	 * Excel Function:

-	 *		NOW()

-	 *

-	 * @access	public

-	 * @category Date/Time Functions

-	 * @return	mixed	Excel date/time serial value, PHP date/time serial value or PHP date/time object,

-	 *						depending on the value of the ReturnDateType flag

-	 */

-	public static function DATETIMENOW() {

-		$saveTimeZone = date_default_timezone_get();

-		date_default_timezone_set('UTC');

-		$retValue = False;

-		switch (PHPExcel_Calculation_Functions::getReturnDateType()) {

-			case PHPExcel_Calculation_Functions::RETURNDATE_EXCEL :

-					$retValue = (float) PHPExcel_Shared_Date::PHPToExcel(time());

-					break;

-			case PHPExcel_Calculation_Functions::RETURNDATE_PHP_NUMERIC :

-					$retValue = (integer) time();

-					break;

-			case PHPExcel_Calculation_Functions::RETURNDATE_PHP_OBJECT :

-					$retValue = new DateTime();

-					break;

-		}

-		date_default_timezone_set($saveTimeZone);

-

-		return $retValue;

-	}	//	function DATETIMENOW()

-

-

-	/**

-	 * DATENOW

-	 *

-	 * Returns the current date.

-	 * The NOW function is useful when you need to display the current date and time on a worksheet or

-	 * calculate a value based on the current date and time, and have that value updated each time you

-	 * open the worksheet.

-	 *

-	 * NOTE: When used in a Cell Formula, MS Excel changes the cell format so that it matches the date

-	 * and time format of your regional settings. PHPExcel does not change cell formatting in this way.

-	 *

-	 * Excel Function:

-	 *		TODAY()

-	 *

-	 * @access	public

-	 * @category Date/Time Functions

-	 * @return	mixed	Excel date/time serial value, PHP date/time serial value or PHP date/time object,

-	 *						depending on the value of the ReturnDateType flag

-	 */

-	public static function DATENOW() {

-		$saveTimeZone = date_default_timezone_get();

-		date_default_timezone_set('UTC');

-		$retValue = False;

-		$excelDateTime = floor(PHPExcel_Shared_Date::PHPToExcel(time()));

-		switch (PHPExcel_Calculation_Functions::getReturnDateType()) {

-			case PHPExcel_Calculation_Functions::RETURNDATE_EXCEL :

-					$retValue = (float) $excelDateTime;

-					break;

-			case PHPExcel_Calculation_Functions::RETURNDATE_PHP_NUMERIC :

-					$retValue = (integer) PHPExcel_Shared_Date::ExcelToPHP($excelDateTime);

-					break;

-			case PHPExcel_Calculation_Functions::RETURNDATE_PHP_OBJECT :

-					$retValue = PHPExcel_Shared_Date::ExcelToPHPObject($excelDateTime);

-					break;

-		}

-		date_default_timezone_set($saveTimeZone);

-

-		return $retValue;

-	}	//	function DATENOW()

-

-

-	/**

-	 * DATE

-	 *

-	 * The DATE function returns a value that represents a particular date.

-	 *

-	 * NOTE: When used in a Cell Formula, MS Excel changes the cell format so that it matches the date

-	 * format of your regional settings. PHPExcel does not change cell formatting in this way.

-	 *

-	 * Excel Function:

-	 *		DATE(year,month,day)

-	 *

-	 * @access	public

-	 * @category Date/Time Functions

-	 * @param	integer		$year	The value of the year argument can include one to four digits.

-	 *								Excel interprets the year argument according to the configured

-	 *								date system: 1900 or 1904.

-	 *								If year is between 0 (zero) and 1899 (inclusive), Excel adds that

-	 *								value to 1900 to calculate the year. For example, DATE(108,1,2)

-	 *								returns January 2, 2008 (1900+108).

-	 *								If year is between 1900 and 9999 (inclusive), Excel uses that

-	 *								value as the year. For example, DATE(2008,1,2) returns January 2,

-	 *								2008.

-	 *								If year is less than 0 or is 10000 or greater, Excel returns the

-	 *								#NUM! error value.

-	 * @param	integer		$month	A positive or negative integer representing the month of the year

-	 *								from 1 to 12 (January to December).

-	 *								If month is greater than 12, month adds that number of months to

-	 *								the first month in the year specified. For example, DATE(2008,14,2)

-	 *								returns the serial number representing February 2, 2009.

-	 *								If month is less than 1, month subtracts the magnitude of that

-	 *								number of months, plus 1, from the first month in the year

-	 *								specified. For example, DATE(2008,-3,2) returns the serial number

-	 *								representing September 2, 2007.

-	 * @param	integer		$day	A positive or negative integer representing the day of the month

-	 *								from 1 to 31.

-	 *								If day is greater than the number of days in the month specified,

-	 *								day adds that number of days to the first day in the month. For

-	 *								example, DATE(2008,1,35) returns the serial number representing

-	 *								February 4, 2008.

-	 *								If day is less than 1, day subtracts the magnitude that number of

-	 *								days, plus one, from the first day of the month specified. For

-	 *								example, DATE(2008,1,-15) returns the serial number representing

-	 *								December 16, 2007.

-	 * @return	mixed	Excel date/time serial value, PHP date/time serial value or PHP date/time object,

-	 *						depending on the value of the ReturnDateType flag

-	 */

-	public static function DATE($year = 0, $month = 1, $day = 1) {

-		$year	= PHPExcel_Calculation_Functions::flattenSingleValue($year);

-		$month	= PHPExcel_Calculation_Functions::flattenSingleValue($month);

-		$day	= PHPExcel_Calculation_Functions::flattenSingleValue($day);

-

-		$year	= ($year !== NULL)	? PHPExcel_Shared_String::testStringAsNumeric($year) : 0;

-		$month	= ($month !== NULL)	? PHPExcel_Shared_String::testStringAsNumeric($month) : 0;

-		$day	= ($day !== NULL)	? PHPExcel_Shared_String::testStringAsNumeric($day) : 0;

-		if ((!is_numeric($year)) ||

-			(!is_numeric($month)) ||

-			(!is_numeric($day))) {

-			return PHPExcel_Calculation_Functions::VALUE();

-		}

-		$year	= (integer) $year;

-		$month	= (integer) $month;

-		$day	= (integer) $day;

-

-		$baseYear = PHPExcel_Shared_Date::getExcelCalendar();

-		// Validate parameters

-		if ($year < ($baseYear-1900)) {

-			return PHPExcel_Calculation_Functions::NaN();

-		}

-		if ((($baseYear-1900) != 0) && ($year < $baseYear) && ($year >= 1900)) {

-			return PHPExcel_Calculation_Functions::NaN();

-		}

-

-		if (($year < $baseYear) && ($year >= ($baseYear-1900))) {

-			$year += 1900;

-		}

-

-		if ($month < 1) {

-			//	Handle year/month adjustment if month < 1

-			--$month;

-			$year += ceil($month / 12) - 1;

-			$month = 13 - abs($month % 12);

-		} elseif ($month > 12) {

-			//	Handle year/month adjustment if month > 12

-			$year += floor($month / 12);

-			$month = ($month % 12);

-		}

-

-		// Re-validate the year parameter after adjustments

-		if (($year < $baseYear) || ($year >= 10000)) {

-			return PHPExcel_Calculation_Functions::NaN();

-		}

-

-		// Execute function

-		$excelDateValue = PHPExcel_Shared_Date::FormattedPHPToExcel($year, $month, $day);

-		switch (PHPExcel_Calculation_Functions::getReturnDateType()) {

-			case PHPExcel_Calculation_Functions::RETURNDATE_EXCEL :

-					return (float) $excelDateValue;

-			case PHPExcel_Calculation_Functions::RETURNDATE_PHP_NUMERIC :

-					return (integer) PHPExcel_Shared_Date::ExcelToPHP($excelDateValue);

-			case PHPExcel_Calculation_Functions::RETURNDATE_PHP_OBJECT :

-					return PHPExcel_Shared_Date::ExcelToPHPObject($excelDateValue);

-		}

-	}	//	function DATE()

-

-

-	/**

-	 * TIME

-	 *

-	 * The TIME function returns a value that represents a particular time.

-	 *

-	 * NOTE: When used in a Cell Formula, MS Excel changes the cell format so that it matches the time

-	 * format of your regional settings. PHPExcel does not change cell formatting in this way.

-	 *

-	 * Excel Function:

-	 *		TIME(hour,minute,second)

-	 *

-	 * @access	public

-	 * @category Date/Time Functions

-	 * @param	integer		$hour		A number from 0 (zero) to 32767 representing the hour.

-	 *									Any value greater than 23 will be divided by 24 and the remainder

-	 *									will be treated as the hour value. For example, TIME(27,0,0) =

-	 *									TIME(3,0,0) = .125 or 3:00 AM.

-	 * @param	integer		$minute		A number from 0 to 32767 representing the minute.

-	 *									Any value greater than 59 will be converted to hours and minutes.

-	 *									For example, TIME(0,750,0) = TIME(12,30,0) = .520833 or 12:30 PM.

-	 * @param	integer		$second		A number from 0 to 32767 representing the second.

-	 *									Any value greater than 59 will be converted to hours, minutes,

-	 *									and seconds. For example, TIME(0,0,2000) = TIME(0,33,22) = .023148

-	 *									or 12:33:20 AM

-	 * @return	mixed	Excel date/time serial value, PHP date/time serial value or PHP date/time object,

-	 *						depending on the value of the ReturnDateType flag

-	 */

-	public static function TIME($hour = 0, $minute = 0, $second = 0) {

-		$hour	= PHPExcel_Calculation_Functions::flattenSingleValue($hour);

-		$minute	= PHPExcel_Calculation_Functions::flattenSingleValue($minute);

-		$second	= PHPExcel_Calculation_Functions::flattenSingleValue($second);

-

-		if ($hour == '') { $hour = 0; }

-		if ($minute == '') { $minute = 0; }

-		if ($second == '') { $second = 0; }

-

-		if ((!is_numeric($hour)) || (!is_numeric($minute)) || (!is_numeric($second))) {

-			return PHPExcel_Calculation_Functions::VALUE();

-		}

-		$hour	= (integer) $hour;

-		$minute	= (integer) $minute;

-		$second	= (integer) $second;

-

-		if ($second < 0) {

-			$minute += floor($second / 60);

-			$second = 60 - abs($second % 60);

-			if ($second == 60) { $second = 0; }

-		} elseif ($second >= 60) {

-			$minute += floor($second / 60);

-			$second = $second % 60;

-		}

-		if ($minute < 0) {

-			$hour += floor($minute / 60);

-			$minute = 60 - abs($minute % 60);

-			if ($minute == 60) { $minute = 0; }

-		} elseif ($minute >= 60) {

-			$hour += floor($minute / 60);

-			$minute = $minute % 60;

-		}

-

-		if ($hour > 23) {

-			$hour = $hour % 24;

-		} elseif ($hour < 0) {

-			return PHPExcel_Calculation_Functions::NaN();

-		}

-

-		// Execute function

-		switch (PHPExcel_Calculation_Functions::getReturnDateType()) {

-			case PHPExcel_Calculation_Functions::RETURNDATE_EXCEL :

-					$date = 0;

-					$calendar = PHPExcel_Shared_Date::getExcelCalendar();

-					if ($calendar != PHPExcel_Shared_Date::CALENDAR_WINDOWS_1900) {

-						$date = 1;

-					}

-					return (float) PHPExcel_Shared_Date::FormattedPHPToExcel($calendar, 1, $date, $hour, $minute, $second);

-			case PHPExcel_Calculation_Functions::RETURNDATE_PHP_NUMERIC :

-					return (integer) PHPExcel_Shared_Date::ExcelToPHP(PHPExcel_Shared_Date::FormattedPHPToExcel(1970, 1, 1, $hour, $minute, $second));	// -2147468400; //	-2147472000 + 3600

-			case PHPExcel_Calculation_Functions::RETURNDATE_PHP_OBJECT :

-					$dayAdjust = 0;

-					if ($hour < 0) {

-						$dayAdjust = floor($hour / 24);

-						$hour = 24 - abs($hour % 24);

-						if ($hour == 24) { $hour = 0; }

-					} elseif ($hour >= 24) {

-						$dayAdjust = floor($hour / 24);

-						$hour = $hour % 24;

-					}

-					$phpDateObject = new DateTime('1900-01-01 '.$hour.':'.$minute.':'.$second);

-					if ($dayAdjust != 0) {

-						$phpDateObject->modify($dayAdjust.' days');

-					}

-					return $phpDateObject;

-		}

-	}	//	function TIME()

-

-

-	/**

-	 * DATEVALUE

-	 *

-	 * Returns a value that represents a particular date.

-	 * Use DATEVALUE to convert a date represented by a text string to an Excel or PHP date/time stamp

-	 * value.

-	 *

-	 * NOTE: When used in a Cell Formula, MS Excel changes the cell format so that it matches the date

-	 * format of your regional settings. PHPExcel does not change cell formatting in this way.

-	 *

-	 * Excel Function:

-	 *		DATEVALUE(dateValue)

-	 *

-	 * @access	public

-	 * @category Date/Time Functions

-	 * @param	string	$dateValue		Text that represents a date in a Microsoft Excel date format.

-	 *									For example, "1/30/2008" or "30-Jan-2008" are text strings within

-	 *									quotation marks that represent dates. Using the default date

-	 *									system in Excel for Windows, date_text must represent a date from

-	 *									January 1, 1900, to December 31, 9999. Using the default date

-	 *									system in Excel for the Macintosh, date_text must represent a date

-	 *									from January 1, 1904, to December 31, 9999. DATEVALUE returns the

-	 *									#VALUE! error value if date_text is out of this range.

-	 * @return	mixed	Excel date/time serial value, PHP date/time serial value or PHP date/time object,

-	 *						depending on the value of the ReturnDateType flag

-	 */

-	public static function DATEVALUE($dateValue = 1) {

-		$dateValue = trim(PHPExcel_Calculation_Functions::flattenSingleValue($dateValue),'"');

-		//	Strip any ordinals because they're allowed in Excel (English only)

-		$dateValue = preg_replace('/(\d)(st|nd|rd|th)([ -\/])/Ui','$1$3',$dateValue);

-		//	Convert separators (/ . or space) to hyphens (should also handle dot used for ordinals in some countries, e.g. Denmark, Germany)

-		$dateValue	= str_replace(array('/','.','-','  '),array(' ',' ',' ',' '),$dateValue);

-

-		$yearFound = false;

-		$t1 = explode(' ',$dateValue);

-		foreach($t1 as &$t) {

-			if ((is_numeric($t)) && ($t > 31)) {

-				if ($yearFound) {

-					return PHPExcel_Calculation_Functions::VALUE();

-				} else {

-					if ($t < 100) { $t += 1900; }

-					$yearFound = true;

-				}

-			}

-		}

-		if ((count($t1) == 1) && (strpos($t,':') != false)) {

-			//	We've been fed a time value without any date

-			return 0.0;

-		} elseif (count($t1) == 2) {

-			//	We only have two parts of the date: either day/month or month/year

-			if ($yearFound) {

-				array_unshift($t1,1);

-			} else {

-				array_push($t1,date('Y'));

-			}

-		}

-		unset($t);

-		$dateValue = implode(' ',$t1);

-

-		$PHPDateArray = date_parse($dateValue);

-		if (($PHPDateArray === False) || ($PHPDateArray['error_count'] > 0)) {

-			$testVal1 = strtok($dateValue,'- ');

-			if ($testVal1 !== False) {

-				$testVal2 = strtok('- ');

-				if ($testVal2 !== False) {

-					$testVal3 = strtok('- ');

-					if ($testVal3 === False) {

-						$testVal3 = strftime('%Y');

-					}

-				} else {

-					return PHPExcel_Calculation_Functions::VALUE();

-				}

-			} else {

-				return PHPExcel_Calculation_Functions::VALUE();

-			}

-			$PHPDateArray = date_parse($testVal1.'-'.$testVal2.'-'.$testVal3);

-			if (($PHPDateArray === False) || ($PHPDateArray['error_count'] > 0)) {

-				$PHPDateArray = date_parse($testVal2.'-'.$testVal1.'-'.$testVal3);

-				if (($PHPDateArray === False) || ($PHPDateArray['error_count'] > 0)) {

-					return PHPExcel_Calculation_Functions::VALUE();

-				}

-			}

-		}

-

-		if (($PHPDateArray !== False) && ($PHPDateArray['error_count'] == 0)) {

-			// Execute function

-			if ($PHPDateArray['year'] == '')	{ $PHPDateArray['year'] = strftime('%Y'); }

-			if ($PHPDateArray['year'] < 1900)

-				return PHPExcel_Calculation_Functions::VALUE();

-			if ($PHPDateArray['month'] == '')	{ $PHPDateArray['month'] = strftime('%m'); }

-			if ($PHPDateArray['day'] == '')		{ $PHPDateArray['day'] = strftime('%d'); }

-			$excelDateValue = floor(PHPExcel_Shared_Date::FormattedPHPToExcel($PHPDateArray['year'],$PHPDateArray['month'],$PHPDateArray['day'],$PHPDateArray['hour'],$PHPDateArray['minute'],$PHPDateArray['second']));

-

-			switch (PHPExcel_Calculation_Functions::getReturnDateType()) {

-				case PHPExcel_Calculation_Functions::RETURNDATE_EXCEL :

-						return (float) $excelDateValue;

-				case PHPExcel_Calculation_Functions::RETURNDATE_PHP_NUMERIC :

-						return (integer) PHPExcel_Shared_Date::ExcelToPHP($excelDateValue);

-				case PHPExcel_Calculation_Functions::RETURNDATE_PHP_OBJECT :

-						return new DateTime($PHPDateArray['year'].'-'.$PHPDateArray['month'].'-'.$PHPDateArray['day'].' 00:00:00');

-			}

-		}

-		return PHPExcel_Calculation_Functions::VALUE();

-	}	//	function DATEVALUE()

-

-

-	/**

-	 * TIMEVALUE

-	 *

-	 * Returns a value that represents a particular time.

-	 * Use TIMEVALUE to convert a time represented by a text string to an Excel or PHP date/time stamp

-	 * value.

-	 *

-	 * NOTE: When used in a Cell Formula, MS Excel changes the cell format so that it matches the time

-	 * format of your regional settings. PHPExcel does not change cell formatting in this way.

-	 *

-	 * Excel Function:

-	 *		TIMEVALUE(timeValue)

-	 *

-	 * @access	public

-	 * @category Date/Time Functions

-	 * @param	string	$timeValue		A text string that represents a time in any one of the Microsoft

-	 *									Excel time formats; for example, "6:45 PM" and "18:45" text strings

-	 *									within quotation marks that represent time.

-	 *									Date information in time_text is ignored.

-	 * @return	mixed	Excel date/time serial value, PHP date/time serial value or PHP date/time object,

-	 *						depending on the value of the ReturnDateType flag

-	 */

-	public static function TIMEVALUE($timeValue) {

-		$timeValue = trim(PHPExcel_Calculation_Functions::flattenSingleValue($timeValue),'"');

-		$timeValue	= str_replace(array('/','.'),array('-','-'),$timeValue);

-

-		$PHPDateArray = date_parse($timeValue);

-		if (($PHPDateArray !== False) && ($PHPDateArray['error_count'] == 0)) {

-			if (PHPExcel_Calculation_Functions::getCompatibilityMode() == PHPExcel_Calculation_Functions::COMPATIBILITY_OPENOFFICE) {

-				$excelDateValue = PHPExcel_Shared_Date::FormattedPHPToExcel($PHPDateArray['year'],$PHPDateArray['month'],$PHPDateArray['day'],$PHPDateArray['hour'],$PHPDateArray['minute'],$PHPDateArray['second']);

-			} else {

-				$excelDateValue = PHPExcel_Shared_Date::FormattedPHPToExcel(1900,1,1,$PHPDateArray['hour'],$PHPDateArray['minute'],$PHPDateArray['second']) - 1;

-			}

-

-			switch (PHPExcel_Calculation_Functions::getReturnDateType()) {

-				case PHPExcel_Calculation_Functions::RETURNDATE_EXCEL :

-						return (float) $excelDateValue;

-				case PHPExcel_Calculation_Functions::RETURNDATE_PHP_NUMERIC :

-						return (integer) $phpDateValue = PHPExcel_Shared_Date::ExcelToPHP($excelDateValue+25569) - 3600;;

-				case PHPExcel_Calculation_Functions::RETURNDATE_PHP_OBJECT :

-						return new DateTime('1900-01-01 '.$PHPDateArray['hour'].':'.$PHPDateArray['minute'].':'.$PHPDateArray['second']);

-			}

-		}

-		return PHPExcel_Calculation_Functions::VALUE();

-	}	//	function TIMEVALUE()

-

-

-	/**

-	 * DATEDIF

-	 *

-	 * @param	mixed	$startDate		Excel date serial value, PHP date/time stamp, PHP DateTime object

-	 *									or a standard date string

-	 * @param	mixed	$endDate		Excel date serial value, PHP date/time stamp, PHP DateTime object

-	 *									or a standard date string

-	 * @param	string	$unit

-	 * @return	integer	Interval between the dates

-	 */

-	public static function DATEDIF($startDate = 0, $endDate = 0, $unit = 'D') {

-		$startDate	= PHPExcel_Calculation_Functions::flattenSingleValue($startDate);

-		$endDate	= PHPExcel_Calculation_Functions::flattenSingleValue($endDate);

-		$unit		= strtoupper(PHPExcel_Calculation_Functions::flattenSingleValue($unit));

-

-		if (is_string($startDate = self::_getDateValue($startDate))) {

-			return PHPExcel_Calculation_Functions::VALUE();

-		}

-		if (is_string($endDate = self::_getDateValue($endDate))) {

-			return PHPExcel_Calculation_Functions::VALUE();

-		}

-

-		// Validate parameters

-		if ($startDate >= $endDate) {

-			return PHPExcel_Calculation_Functions::NaN();

-		}

-

-		// Execute function

-		$difference = $endDate - $startDate;

-

-		$PHPStartDateObject = PHPExcel_Shared_Date::ExcelToPHPObject($startDate);

-		$startDays = $PHPStartDateObject->format('j');

-		$startMonths = $PHPStartDateObject->format('n');

-		$startYears = $PHPStartDateObject->format('Y');

-

-		$PHPEndDateObject = PHPExcel_Shared_Date::ExcelToPHPObject($endDate);

-		$endDays = $PHPEndDateObject->format('j');

-		$endMonths = $PHPEndDateObject->format('n');

-		$endYears = $PHPEndDateObject->format('Y');

-

-		$retVal = PHPExcel_Calculation_Functions::NaN();

-		switch ($unit) {

-			case 'D':

-				$retVal = intval($difference);

-				break;

-			case 'M':

-				$retVal = intval($endMonths - $startMonths) + (intval($endYears - $startYears) * 12);

-				//	We're only interested in full months

-				if ($endDays < $startDays) {

-					--$retVal;

-				}

-				break;

-			case 'Y':

-				$retVal = intval($endYears - $startYears);

-				//	We're only interested in full months

-				if ($endMonths < $startMonths) {

-					--$retVal;

-				} elseif (($endMonths == $startMonths) && ($endDays < $startDays)) {

-					--$retVal;

-				}

-				break;

-			case 'MD':

-				if ($endDays < $startDays) {

-					$retVal = $endDays;

-					$PHPEndDateObject->modify('-'.$endDays.' days');

-					$adjustDays = $PHPEndDateObject->format('j');

-					if ($adjustDays > $startDays) {

-						$retVal += ($adjustDays - $startDays);

-					}

-				} else {

-					$retVal = $endDays - $startDays;

-				}

-				break;

-			case 'YM':

-				$retVal = intval($endMonths - $startMonths);

-				if ($retVal < 0) $retVal = 12 + $retVal;

-				//	We're only interested in full months

-				if ($endDays < $startDays) {

-					--$retVal;

-				}

-				break;

-			case 'YD':

-				$retVal = intval($difference);

-				if ($endYears > $startYears) {

-					while ($endYears > $startYears) {

-						$PHPEndDateObject->modify('-1 year');

-						$endYears = $PHPEndDateObject->format('Y');

-					}

-					$retVal = $PHPEndDateObject->format('z') - $PHPStartDateObject->format('z');

-					if ($retVal < 0) { $retVal += 365; }

-				}

-				break;

-			default:

-				$retVal = PHPExcel_Calculation_Functions::NaN();

-		}

-		return $retVal;

-	}	//	function DATEDIF()

-

-

-	/**

-	 * DAYS360

-	 *

-	 * Returns the number of days between two dates based on a 360-day year (twelve 30-day months),

-	 * which is used in some accounting calculations. Use this function to help compute payments if

-	 * your accounting system is based on twelve 30-day months.

-	 *

-	 * Excel Function:

-	 *		DAYS360(startDate,endDate[,method])

-	 *

-	 * @access	public

-	 * @category Date/Time Functions

-	 * @param	mixed		$startDate		Excel date serial value (float), PHP date timestamp (integer),

-	 *										PHP DateTime object, or a standard date string

-	 * @param	mixed		$endDate		Excel date serial value (float), PHP date timestamp (integer),

-	 *										PHP DateTime object, or a standard date string

-	 * @param	boolean		$method			US or European Method

-	 *										FALSE or omitted: U.S. (NASD) method. If the starting date is

-	 *										the last day of a month, it becomes equal to the 30th of the

-	 *										same month. If the ending date is the last day of a month and

-	 *										the starting date is earlier than the 30th of a month, the

-	 *										ending date becomes equal to the 1st of the next month;

-	 *										otherwise the ending date becomes equal to the 30th of the

-	 *										same month.

-	 *										TRUE: European method. Starting dates and ending dates that

-	 *										occur on the 31st of a month become equal to the 30th of the

-	 *										same month.

-	 * @return	integer		Number of days between start date and end date

-	 */

-	public static function DAYS360($startDate = 0, $endDate = 0, $method = false) {

-		$startDate	= PHPExcel_Calculation_Functions::flattenSingleValue($startDate);

-		$endDate	= PHPExcel_Calculation_Functions::flattenSingleValue($endDate);

-

-		if (is_string($startDate = self::_getDateValue($startDate))) {

-			return PHPExcel_Calculation_Functions::VALUE();

-		}

-		if (is_string($endDate = self::_getDateValue($endDate))) {

-			return PHPExcel_Calculation_Functions::VALUE();

-		}

-

-		// Execute function

-		$PHPStartDateObject = PHPExcel_Shared_Date::ExcelToPHPObject($startDate);

-		$startDay = $PHPStartDateObject->format('j');

-		$startMonth = $PHPStartDateObject->format('n');

-		$startYear = $PHPStartDateObject->format('Y');

-

-		$PHPEndDateObject = PHPExcel_Shared_Date::ExcelToPHPObject($endDate);

-		$endDay = $PHPEndDateObject->format('j');

-		$endMonth = $PHPEndDateObject->format('n');

-		$endYear = $PHPEndDateObject->format('Y');

-

-		return self::_dateDiff360($startDay, $startMonth, $startYear, $endDay, $endMonth, $endYear, !$method);

-	}	//	function DAYS360()

-

-

-	/**

-	 * YEARFRAC

-	 *

-	 * Calculates the fraction of the year represented by the number of whole days between two dates

-	 * (the start_date and the end_date).

-	 * Use the YEARFRAC worksheet function to identify the proportion of a whole year's benefits or

-	 * obligations to assign to a specific term.

-	 *

-	 * Excel Function:

-	 *		YEARFRAC(startDate,endDate[,method])

-	 *

-	 * @access	public

-	 * @category Date/Time Functions

-	 * @param	mixed	$startDate		Excel date serial value (float), PHP date timestamp (integer),

-	 *									PHP DateTime object, or a standard date string

-	 * @param	mixed	$endDate		Excel date serial value (float), PHP date timestamp (integer),

-	 *									PHP DateTime object, or a standard date string

-	 * @param	integer	$method			Method used for the calculation

-	 *										0 or omitted	US (NASD) 30/360

-	 *										1				Actual/actual

-	 *										2				Actual/360

-	 *										3				Actual/365

-	 *										4				European 30/360

-	 * @return	float	fraction of the year

-	 */

-	public static function YEARFRAC($startDate = 0, $endDate = 0, $method = 0) {

-		$startDate	= PHPExcel_Calculation_Functions::flattenSingleValue($startDate);

-		$endDate	= PHPExcel_Calculation_Functions::flattenSingleValue($endDate);

-		$method		= PHPExcel_Calculation_Functions::flattenSingleValue($method);

-

-		if (is_string($startDate = self::_getDateValue($startDate))) {

-			return PHPExcel_Calculation_Functions::VALUE();

-		}

-		if (is_string($endDate = self::_getDateValue($endDate))) {

-			return PHPExcel_Calculation_Functions::VALUE();

-		}

-

-		if (((is_numeric($method)) && (!is_string($method))) || ($method == '')) {

-			switch($method) {

-				case 0	:

-					return self::DAYS360($startDate,$endDate) / 360;

-				case 1	:

-					$days = self::DATEDIF($startDate,$endDate);

-					$startYear = self::YEAR($startDate);

-					$endYear = self::YEAR($endDate);

-					$years = $endYear - $startYear + 1;

-					$leapDays = 0;

-					if ($years == 1) {

-						if (self::_isLeapYear($endYear)) {

-							$startMonth = self::MONTHOFYEAR($startDate);

-							$endMonth = self::MONTHOFYEAR($endDate);

-							$endDay = self::DAYOFMONTH($endDate);

-							if (($startMonth < 3) ||

-								(($endMonth * 100 + $endDay) >= (2 * 100 + 29))) {

-				     			$leapDays += 1;

-							}

-						}

-					} else {

-						for($year = $startYear; $year <= $endYear; ++$year) {

-							if ($year == $startYear) {

-								$startMonth = self::MONTHOFYEAR($startDate);

-								$startDay = self::DAYOFMONTH($startDate);

-								if ($startMonth < 3) {

-									$leapDays += (self::_isLeapYear($year)) ? 1 : 0;

-								}

-							} elseif($year == $endYear) {

-								$endMonth = self::MONTHOFYEAR($endDate);

-								$endDay = self::DAYOFMONTH($endDate);

-								if (($endMonth * 100 + $endDay) >= (2 * 100 + 29)) {

-									$leapDays += (self::_isLeapYear($year)) ? 1 : 0;

-								}

-							} else {

-								$leapDays += (self::_isLeapYear($year)) ? 1 : 0;

-							}

-						}

-						if ($years == 2) {

-							if (($leapDays == 0) && (self::_isLeapYear($startYear)) && ($days > 365)) {

-								$leapDays = 1;

-							} elseif ($days < 366) {

-								$years = 1;

-							}

-						}

-						$leapDays /= $years;

-					}

-					return $days / (365 + $leapDays);

-				case 2	:

-					return self::DATEDIF($startDate,$endDate) / 360;

-				case 3	:

-					return self::DATEDIF($startDate,$endDate) / 365;

-				case 4	:

-					return self::DAYS360($startDate,$endDate,True) / 360;

-			}

-		}

-		return PHPExcel_Calculation_Functions::VALUE();

-	}	//	function YEARFRAC()

-

-

-	/**

-	 * NETWORKDAYS

-	 *

-	 * Returns the number of whole working days between start_date and end_date. Working days

-	 * exclude weekends and any dates identified in holidays.

-	 * Use NETWORKDAYS to calculate employee benefits that accrue based on the number of days

-	 * worked during a specific term.

-	 *

-	 * Excel Function:

-	 *		NETWORKDAYS(startDate,endDate[,holidays[,holiday[,...]]])

-	 *

-	 * @access	public

-	 * @category Date/Time Functions

-	 * @param	mixed			$startDate		Excel date serial value (float), PHP date timestamp (integer),

-	 *											PHP DateTime object, or a standard date string

-	 * @param	mixed			$endDate		Excel date serial value (float), PHP date timestamp (integer),

-	 *											PHP DateTime object, or a standard date string

-	 * @param	mixed			$holidays,...	Optional series of Excel date serial value (float), PHP date

-	 *											timestamp (integer), PHP DateTime object, or a standard date

-	 *											strings that will be excluded from the working calendar, such

-	 *											as state and federal holidays and floating holidays.

-	 * @return	integer			Interval between the dates

-	 */

-	public static function NETWORKDAYS($startDate,$endDate) {

-		//	Retrieve the mandatory start and end date that are referenced in the function definition

-		$startDate	= PHPExcel_Calculation_Functions::flattenSingleValue($startDate);

-		$endDate	= PHPExcel_Calculation_Functions::flattenSingleValue($endDate);

-		//	Flush the mandatory start and end date that are referenced in the function definition, and get the optional days

-		$dateArgs = PHPExcel_Calculation_Functions::flattenArray(func_get_args());

-		array_shift($dateArgs);

-		array_shift($dateArgs);

-

-		//	Validate the start and end dates

-		if (is_string($startDate = $sDate = self::_getDateValue($startDate))) {

-			return PHPExcel_Calculation_Functions::VALUE();

-		}

-		$startDate = (float) floor($startDate);

-		if (is_string($endDate = $eDate = self::_getDateValue($endDate))) {

-			return PHPExcel_Calculation_Functions::VALUE();

-		}

-		$endDate = (float) floor($endDate);

-

-		if ($sDate > $eDate) {

-			$startDate = $eDate;

-			$endDate = $sDate;

-		}

-

-		// Execute function

-		$startDoW = 6 - self::DAYOFWEEK($startDate,2);

-		if ($startDoW < 0) { $startDoW = 0; }

-		$endDoW = self::DAYOFWEEK($endDate,2);

-		if ($endDoW >= 6) { $endDoW = 0; }

-

-		$wholeWeekDays = floor(($endDate - $startDate) / 7) * 5;

-		$partWeekDays = $endDoW + $startDoW;

-		if ($partWeekDays > 5) {

-			$partWeekDays -= 5;

-		}

-

-		//	Test any extra holiday parameters

-		$holidayCountedArray = array();

-		foreach ($dateArgs as $holidayDate) {

-			if (is_string($holidayDate = self::_getDateValue($holidayDate))) {

-				return PHPExcel_Calculation_Functions::VALUE();

-			}

-			if (($holidayDate >= $startDate) && ($holidayDate <= $endDate)) {

-				if ((self::DAYOFWEEK($holidayDate,2) < 6) && (!in_array($holidayDate,$holidayCountedArray))) {

-					--$partWeekDays;

-					$holidayCountedArray[] = $holidayDate;

-				}

-			}

-		}

-

-		if ($sDate > $eDate) {

-			return 0 - ($wholeWeekDays + $partWeekDays);

-		}

-		return $wholeWeekDays + $partWeekDays;

-	}	//	function NETWORKDAYS()

-

-

-	/**

-	 * WORKDAY

-	 *

-	 * Returns the date that is the indicated number of working days before or after a date (the

-	 * starting date). Working days exclude weekends and any dates identified as holidays.

-	 * Use WORKDAY to exclude weekends or holidays when you calculate invoice due dates, expected

-	 * delivery times, or the number of days of work performed.

-	 *

-	 * Excel Function:

-	 *		WORKDAY(startDate,endDays[,holidays[,holiday[,...]]])

-	 *

-	 * @access	public

-	 * @category Date/Time Functions

-	 * @param	mixed		$startDate		Excel date serial value (float), PHP date timestamp (integer),

-	 *										PHP DateTime object, or a standard date string

-	 * @param	integer		$endDays		The number of nonweekend and nonholiday days before or after

-	 *										startDate. A positive value for days yields a future date; a

-	 *										negative value yields a past date.

-	 * @param	mixed		$holidays,...	Optional series of Excel date serial value (float), PHP date

-	 *										timestamp (integer), PHP DateTime object, or a standard date

-	 *										strings that will be excluded from the working calendar, such

-	 *										as state and federal holidays and floating holidays.

-	 * @return	mixed	Excel date/time serial value, PHP date/time serial value or PHP date/time object,

-	 *						depending on the value of the ReturnDateType flag

-	 */

-	public static function WORKDAY($startDate,$endDays) {

-		//	Retrieve the mandatory start date and days that are referenced in the function definition

-		$startDate	= PHPExcel_Calculation_Functions::flattenSingleValue($startDate);

-		$endDays	= PHPExcel_Calculation_Functions::flattenSingleValue($endDays);

-		//	Flush the mandatory start date and days that are referenced in the function definition, and get the optional days

-		$dateArgs = PHPExcel_Calculation_Functions::flattenArray(func_get_args());

-		array_shift($dateArgs);

-		array_shift($dateArgs);

-

-		if ((is_string($startDate = self::_getDateValue($startDate))) || (!is_numeric($endDays))) {

-			return PHPExcel_Calculation_Functions::VALUE();

-		}

-		$startDate = (float) floor($startDate);

-		$endDays = (int) floor($endDays);

-		//	If endDays is 0, we always return startDate

-		if ($endDays == 0) { return $startDate; }

-

-		$decrementing = ($endDays < 0) ? True : False;

-

-		//	Adjust the start date if it falls over a weekend

-

-		$startDoW = self::DAYOFWEEK($startDate,3);

-		if (self::DAYOFWEEK($startDate,3) >= 5) {

-			$startDate += ($decrementing) ? -$startDoW + 4: 7 - $startDoW;

-			($decrementing) ? $endDays++ : $endDays--;

-		}

-

-		//	Add endDays

-		$endDate = (float) $startDate + (intval($endDays / 5) * 7) + ($endDays % 5);

-

-		//	Adjust the calculated end date if it falls over a weekend

-		$endDoW = self::DAYOFWEEK($endDate,3);

-		if ($endDoW >= 5) {

-			$endDate += ($decrementing) ? -$endDoW + 4: 7 - $endDoW;

-		}

-

-		//	Test any extra holiday parameters

-		if (!empty($dateArgs)) {

-			$holidayCountedArray = $holidayDates = array();

-			foreach ($dateArgs as $holidayDate) {

-				if (($holidayDate !== NULL) && (trim($holidayDate) > '')) {

-					if (is_string($holidayDate = self::_getDateValue($holidayDate))) {

-						return PHPExcel_Calculation_Functions::VALUE();

-					}

-					if (self::DAYOFWEEK($holidayDate,3) < 5) {

-						$holidayDates[] = $holidayDate;

-					}

-				}

-			}

-			if ($decrementing) {

-				rsort($holidayDates, SORT_NUMERIC);

-			} else {

-				sort($holidayDates, SORT_NUMERIC);

-			}

-			foreach ($holidayDates as $holidayDate) {

-				if ($decrementing) {

-					if (($holidayDate <= $startDate) && ($holidayDate >= $endDate)) {

-						if (!in_array($holidayDate,$holidayCountedArray)) {

-							--$endDate;

-							$holidayCountedArray[] = $holidayDate;

-						}

-					}

-				} else {

-					if (($holidayDate >= $startDate) && ($holidayDate <= $endDate)) {

-						if (!in_array($holidayDate,$holidayCountedArray)) {

-							++$endDate;

-							$holidayCountedArray[] = $holidayDate;

-						}

-					}

-				}

-				//	Adjust the calculated end date if it falls over a weekend

-				$endDoW = self::DAYOFWEEK($endDate,3);

-				if ($endDoW >= 5) {

-					$endDate += ($decrementing) ? -$endDoW + 4: 7 - $endDoW;

-				}

-

-			}

-		}

-

-		switch (PHPExcel_Calculation_Functions::getReturnDateType()) {

-			case PHPExcel_Calculation_Functions::RETURNDATE_EXCEL :

-					return (float) $endDate;

-			case PHPExcel_Calculation_Functions::RETURNDATE_PHP_NUMERIC :

-					return (integer) PHPExcel_Shared_Date::ExcelToPHP($endDate);

-			case PHPExcel_Calculation_Functions::RETURNDATE_PHP_OBJECT :

-					return PHPExcel_Shared_Date::ExcelToPHPObject($endDate);

-		}

-	}	//	function WORKDAY()

-

-

-	/**

-	 * DAYOFMONTH

-	 *

-	 * Returns the day of the month, for a specified date. The day is given as an integer

-	 * ranging from 1 to 31.

-	 *

-	 * Excel Function:

-	 *		DAY(dateValue)

-	 *

-	 * @param	mixed	$dateValue		Excel date serial value (float), PHP date timestamp (integer),

-	 *									PHP DateTime object, or a standard date string

-	 * @return	int		Day of the month

-	 */

-	public static function DAYOFMONTH($dateValue = 1) {

-		$dateValue	= PHPExcel_Calculation_Functions::flattenSingleValue($dateValue);

-

-		if (is_string($dateValue = self::_getDateValue($dateValue))) {

-			return PHPExcel_Calculation_Functions::VALUE();

-		} elseif ($dateValue == 0.0) {

-			return 0;

-		} elseif ($dateValue < 0.0) {

-			return PHPExcel_Calculation_Functions::NaN();

-		}

-

-		// Execute function

-		$PHPDateObject = PHPExcel_Shared_Date::ExcelToPHPObject($dateValue);

-

-		return (int) $PHPDateObject->format('j');

-	}	//	function DAYOFMONTH()

-

-

-	/**

-	 * DAYOFWEEK

-	 *

-	 * Returns the day of the week for a specified date. The day is given as an integer

-	 * ranging from 0 to 7 (dependent on the requested style).

-	 *

-	 * Excel Function:

-	 *		WEEKDAY(dateValue[,style])

-	 *

-	 * @param	mixed	$dateValue		Excel date serial value (float), PHP date timestamp (integer),

-	 *									PHP DateTime object, or a standard date string

-	 * @param	int		$style			A number that determines the type of return value

-	 *										1 or omitted	Numbers 1 (Sunday) through 7 (Saturday).

-	 *										2				Numbers 1 (Monday) through 7 (Sunday).

-	 *										3				Numbers 0 (Monday) through 6 (Sunday).

-	 * @return	int		Day of the week value

-	 */

-	public static function DAYOFWEEK($dateValue = 1, $style = 1) {

-		$dateValue	= PHPExcel_Calculation_Functions::flattenSingleValue($dateValue);

-		$style		= PHPExcel_Calculation_Functions::flattenSingleValue($style);

-

-		if (!is_numeric($style)) {

-			return PHPExcel_Calculation_Functions::VALUE();

-		} elseif (($style < 1) || ($style > 3)) {

-			return PHPExcel_Calculation_Functions::NaN();

-		}

-		$style = floor($style);

-

-		if (is_string($dateValue = self::_getDateValue($dateValue))) {

-			return PHPExcel_Calculation_Functions::VALUE();

-		} elseif ($dateValue < 0.0) {

-			return PHPExcel_Calculation_Functions::NaN();

-		}

-

-		// Execute function

-		$PHPDateObject = PHPExcel_Shared_Date::ExcelToPHPObject($dateValue);

-		$DoW = $PHPDateObject->format('w');

-

-		$firstDay = 1;

-		switch ($style) {

-			case 1: ++$DoW;

-					break;

-			case 2: if ($DoW == 0) { $DoW = 7; }

-					break;

-			case 3: if ($DoW == 0) { $DoW = 7; }

-					$firstDay = 0;

-					--$DoW;

-					break;

-		}

-		if (PHPExcel_Calculation_Functions::getCompatibilityMode() == PHPExcel_Calculation_Functions::COMPATIBILITY_EXCEL) {

-			//	Test for Excel's 1900 leap year, and introduce the error as required

-			if (($PHPDateObject->format('Y') == 1900) && ($PHPDateObject->format('n') <= 2)) {

-				--$DoW;

-				if ($DoW < $firstDay) {

-					$DoW += 7;

-				}

-			}

-		}

-

-		return (int) $DoW;

-	}	//	function DAYOFWEEK()

-

-

-	/**

-	 * WEEKOFYEAR

-	 *

-	 * Returns the week of the year for a specified date.

-	 * The WEEKNUM function considers the week containing January 1 to be the first week of the year.

-	 * However, there is a European standard that defines the first week as the one with the majority

-	 * of days (four or more) falling in the new year. This means that for years in which there are

-	 * three days or less in the first week of January, the WEEKNUM function returns week numbers

-	 * that are incorrect according to the European standard.

-	 *

-	 * Excel Function:

-	 *		WEEKNUM(dateValue[,style])

-	 *

-	 * @param	mixed	$dateValue		Excel date serial value (float), PHP date timestamp (integer),

-	 *									PHP DateTime object, or a standard date string

-	 * @param	boolean	$method			Week begins on Sunday or Monday

-	 *										1 or omitted	Week begins on Sunday.

-	 *										2				Week begins on Monday.

-	 * @return	int		Week Number

-	 */

-	public static function WEEKOFYEAR($dateValue = 1, $method = 1) {

-		$dateValue	= PHPExcel_Calculation_Functions::flattenSingleValue($dateValue);

-		$method		= PHPExcel_Calculation_Functions::flattenSingleValue($method);

-

-		if (!is_numeric($method)) {

-			return PHPExcel_Calculation_Functions::VALUE();

-		} elseif (($method < 1) || ($method > 2)) {

-			return PHPExcel_Calculation_Functions::NaN();

-		}

-		$method = floor($method);

-

-		if (is_string($dateValue = self::_getDateValue($dateValue))) {

-			return PHPExcel_Calculation_Functions::VALUE();

-		} elseif ($dateValue < 0.0) {

-			return PHPExcel_Calculation_Functions::NaN();

-		}

-

-		// Execute function

-		$PHPDateObject = PHPExcel_Shared_Date::ExcelToPHPObject($dateValue);

-		$dayOfYear = $PHPDateObject->format('z');

-		$dow = $PHPDateObject->format('w');

-		$PHPDateObject->modify('-'.$dayOfYear.' days');

-		$dow = $PHPDateObject->format('w');

-		$daysInFirstWeek = 7 - (($dow + (2 - $method)) % 7);

-		$dayOfYear -= $daysInFirstWeek;

-		$weekOfYear = ceil($dayOfYear / 7) + 1;

-

-		return (int) $weekOfYear;

-	}	//	function WEEKOFYEAR()

-

-

-	/**

-	 * MONTHOFYEAR

-	 *

-	 * Returns the month of a date represented by a serial number.

-	 * The month is given as an integer, ranging from 1 (January) to 12 (December).

-	 *

-	 * Excel Function:

-	 *		MONTH(dateValue)

-	 *

-	 * @param	mixed	$dateValue		Excel date serial value (float), PHP date timestamp (integer),

-	 *									PHP DateTime object, or a standard date string

-	 * @return	int		Month of the year

-	 */

-	public static function MONTHOFYEAR($dateValue = 1) {

-		$dateValue	= PHPExcel_Calculation_Functions::flattenSingleValue($dateValue);

-

-		if (is_string($dateValue = self::_getDateValue($dateValue))) {

-			return PHPExcel_Calculation_Functions::VALUE();

-		} elseif ($dateValue < 0.0) {

-			return PHPExcel_Calculation_Functions::NaN();

-		}

-

-		// Execute function

-		$PHPDateObject = PHPExcel_Shared_Date::ExcelToPHPObject($dateValue);

-

-		return (int) $PHPDateObject->format('n');

-	}	//	function MONTHOFYEAR()

-

-

-	/**

-	 * YEAR

-	 *

-	 * Returns the year corresponding to a date.

-	 * The year is returned as an integer in the range 1900-9999.

-	 *

-	 * Excel Function:

-	 *		YEAR(dateValue)

-	 *

-	 * @param	mixed	$dateValue		Excel date serial value (float), PHP date timestamp (integer),

-	 *									PHP DateTime object, or a standard date string

-	 * @return	int		Year

-	 */

-	public static function YEAR($dateValue = 1) {

-		$dateValue	= PHPExcel_Calculation_Functions::flattenSingleValue($dateValue);

-

-		if (is_string($dateValue = self::_getDateValue($dateValue))) {

-			return PHPExcel_Calculation_Functions::VALUE();

-		} elseif ($dateValue < 0.0) {

-			return PHPExcel_Calculation_Functions::NaN();

-		}

-

-		// Execute function

-		$PHPDateObject = PHPExcel_Shared_Date::ExcelToPHPObject($dateValue);

-

-		return (int) $PHPDateObject->format('Y');

-	}	//	function YEAR()

-

-

-	/**

-	 * HOUROFDAY

-	 *

-	 * Returns the hour of a time value.

-	 * The hour is given as an integer, ranging from 0 (12:00 A.M.) to 23 (11:00 P.M.).

-	 *

-	 * Excel Function:

-	 *		HOUR(timeValue)

-	 *

-	 * @param	mixed	$timeValue		Excel date serial value (float), PHP date timestamp (integer),

-	 *									PHP DateTime object, or a standard time string

-	 * @return	int		Hour

-	 */

-	public static function HOUROFDAY($timeValue = 0) {

-		$timeValue	= PHPExcel_Calculation_Functions::flattenSingleValue($timeValue);

-

-		if (!is_numeric($timeValue)) {

-			if (PHPExcel_Calculation_Functions::getCompatibilityMode() == PHPExcel_Calculation_Functions::COMPATIBILITY_GNUMERIC) {

-				$testVal = strtok($timeValue,'/-: ');

-				if (strlen($testVal) < strlen($timeValue)) {

-					return PHPExcel_Calculation_Functions::VALUE();

-				}

-			}

-			$timeValue = self::_getTimeValue($timeValue);

-			if (is_string($timeValue)) {

-				return PHPExcel_Calculation_Functions::VALUE();

-			}

-		}

-		// Execute function

-		if ($timeValue >= 1) {

-			$timeValue = fmod($timeValue,1);

-		} elseif ($timeValue < 0.0) {

-			return PHPExcel_Calculation_Functions::NaN();

-		}

-		$timeValue = PHPExcel_Shared_Date::ExcelToPHP($timeValue);

-

-		return (int) gmdate('G',$timeValue);

-	}	//	function HOUROFDAY()

-

-

-	/**

-	 * MINUTEOFHOUR

-	 *

-	 * Returns the minutes of a time value.

-	 * The minute is given as an integer, ranging from 0 to 59.

-	 *

-	 * Excel Function:

-	 *		MINUTE(timeValue)

-	 *

-	 * @param	mixed	$timeValue		Excel date serial value (float), PHP date timestamp (integer),

-	 *									PHP DateTime object, or a standard time string

-	 * @return	int		Minute

-	 */

-	public static function MINUTEOFHOUR($timeValue = 0) {

-		$timeValue = $timeTester	= PHPExcel_Calculation_Functions::flattenSingleValue($timeValue);

-

-		if (!is_numeric($timeValue)) {

-			if (PHPExcel_Calculation_Functions::getCompatibilityMode() == PHPExcel_Calculation_Functions::COMPATIBILITY_GNUMERIC) {

-				$testVal = strtok($timeValue,'/-: ');

-				if (strlen($testVal) < strlen($timeValue)) {

-					return PHPExcel_Calculation_Functions::VALUE();

-				}

-			}

-			$timeValue = self::_getTimeValue($timeValue);

-			if (is_string($timeValue)) {

-				return PHPExcel_Calculation_Functions::VALUE();

-			}

-		}

-		// Execute function

-		if ($timeValue >= 1) {

-			$timeValue = fmod($timeValue,1);

-		} elseif ($timeValue < 0.0) {

-			return PHPExcel_Calculation_Functions::NaN();

-		}

-		$timeValue = PHPExcel_Shared_Date::ExcelToPHP($timeValue);

-

-		return (int) gmdate('i',$timeValue);

-	}	//	function MINUTEOFHOUR()

-

-

-	/**

-	 * SECONDOFMINUTE

-	 *

-	 * Returns the seconds of a time value.

-	 * The second is given as an integer in the range 0 (zero) to 59.

-	 *

-	 * Excel Function:

-	 *		SECOND(timeValue)

-	 *

-	 * @param	mixed	$timeValue		Excel date serial value (float), PHP date timestamp (integer),

-	 *									PHP DateTime object, or a standard time string

-	 * @return	int		Second

-	 */

-	public static function SECONDOFMINUTE($timeValue = 0) {

-		$timeValue	= PHPExcel_Calculation_Functions::flattenSingleValue($timeValue);

-

-		if (!is_numeric($timeValue)) {

-			if (PHPExcel_Calculation_Functions::getCompatibilityMode() == PHPExcel_Calculation_Functions::COMPATIBILITY_GNUMERIC) {

-				$testVal = strtok($timeValue,'/-: ');

-				if (strlen($testVal) < strlen($timeValue)) {

-					return PHPExcel_Calculation_Functions::VALUE();

-				}

-			}

-			$timeValue = self::_getTimeValue($timeValue);

-			if (is_string($timeValue)) {

-				return PHPExcel_Calculation_Functions::VALUE();

-			}

-		}

-		// Execute function

-		if ($timeValue >= 1) {

-			$timeValue = fmod($timeValue,1);

-		} elseif ($timeValue < 0.0) {

-			return PHPExcel_Calculation_Functions::NaN();

-		}

-		$timeValue = PHPExcel_Shared_Date::ExcelToPHP($timeValue);

-

-		return (int) gmdate('s',$timeValue);

-	}	//	function SECONDOFMINUTE()

-

-

-	/**

-	 * EDATE

-	 *

-	 * Returns the serial number that represents the date that is the indicated number of months

-	 * before or after a specified date (the start_date).

-	 * Use EDATE to calculate maturity dates or due dates that fall on the same day of the month

-	 * as the date of issue.

-	 *

-	 * Excel Function:

-	 *		EDATE(dateValue,adjustmentMonths)

-	 *

-	 * @param	mixed	$dateValue			Excel date serial value (float), PHP date timestamp (integer),

-	 *										PHP DateTime object, or a standard date string

-	 * @param	int		$adjustmentMonths	The number of months before or after start_date.

-	 *										A positive value for months yields a future date;

-	 *										a negative value yields a past date.

-	 * @return	mixed	Excel date/time serial value, PHP date/time serial value or PHP date/time object,

-	 *						depending on the value of the ReturnDateType flag

-	 */

-	public static function EDATE($dateValue = 1, $adjustmentMonths = 0) {

-		$dateValue			= PHPExcel_Calculation_Functions::flattenSingleValue($dateValue);

-		$adjustmentMonths	= PHPExcel_Calculation_Functions::flattenSingleValue($adjustmentMonths);

-

-		if (!is_numeric($adjustmentMonths)) {

-			return PHPExcel_Calculation_Functions::VALUE();

-		}

-		$adjustmentMonths = floor($adjustmentMonths);

-

-		if (is_string($dateValue = self::_getDateValue($dateValue))) {

-			return PHPExcel_Calculation_Functions::VALUE();

-		}

-

-		// Execute function

-		$PHPDateObject = self::_adjustDateByMonths($dateValue,$adjustmentMonths);

-

-		switch (PHPExcel_Calculation_Functions::getReturnDateType()) {

-			case PHPExcel_Calculation_Functions::RETURNDATE_EXCEL :

-					return (float) PHPExcel_Shared_Date::PHPToExcel($PHPDateObject);

-			case PHPExcel_Calculation_Functions::RETURNDATE_PHP_NUMERIC :

-					return (integer) PHPExcel_Shared_Date::ExcelToPHP(PHPExcel_Shared_Date::PHPToExcel($PHPDateObject));

-			case PHPExcel_Calculation_Functions::RETURNDATE_PHP_OBJECT :

-					return $PHPDateObject;

-		}

-	}	//	function EDATE()

-

-

-	/**

-	 * EOMONTH

-	 *

-	 * Returns the date value for the last day of the month that is the indicated number of months

-	 * before or after start_date.

-	 * Use EOMONTH to calculate maturity dates or due dates that fall on the last day of the month.

-	 *

-	 * Excel Function:

-	 *		EOMONTH(dateValue,adjustmentMonths)

-	 *

-	 * @param	mixed	$dateValue			Excel date serial value (float), PHP date timestamp (integer),

-	 *										PHP DateTime object, or a standard date string

-	 * @param	int		$adjustmentMonths	The number of months before or after start_date.

-	 *										A positive value for months yields a future date;

-	 *										a negative value yields a past date.

-	 * @return	mixed	Excel date/time serial value, PHP date/time serial value or PHP date/time object,

-	 *						depending on the value of the ReturnDateType flag

-	 */

-	public static function EOMONTH($dateValue = 1, $adjustmentMonths = 0) {

-		$dateValue			= PHPExcel_Calculation_Functions::flattenSingleValue($dateValue);

-		$adjustmentMonths	= PHPExcel_Calculation_Functions::flattenSingleValue($adjustmentMonths);

-

-		if (!is_numeric($adjustmentMonths)) {

-			return PHPExcel_Calculation_Functions::VALUE();

-		}

-		$adjustmentMonths = floor($adjustmentMonths);

-

-		if (is_string($dateValue = self::_getDateValue($dateValue))) {

-			return PHPExcel_Calculation_Functions::VALUE();

-		}

-

-		// Execute function

-		$PHPDateObject = self::_adjustDateByMonths($dateValue,$adjustmentMonths+1);

-		$adjustDays = (int) $PHPDateObject->format('d');

-		$adjustDaysString = '-'.$adjustDays.' days';

-		$PHPDateObject->modify($adjustDaysString);

-

-		switch (PHPExcel_Calculation_Functions::getReturnDateType()) {

-			case PHPExcel_Calculation_Functions::RETURNDATE_EXCEL :

-					return (float) PHPExcel_Shared_Date::PHPToExcel($PHPDateObject);

-			case PHPExcel_Calculation_Functions::RETURNDATE_PHP_NUMERIC :

-					return (integer) PHPExcel_Shared_Date::ExcelToPHP(PHPExcel_Shared_Date::PHPToExcel($PHPDateObject));

-			case PHPExcel_Calculation_Functions::RETURNDATE_PHP_OBJECT :

-					return $PHPDateObject;

-		}

-	}	//	function EOMONTH()

-

-}	//	class PHPExcel_Calculation_DateTime

-

diff --git a/admin/survey/excel/PHPExcel/Calculation/Engineering.php b/admin/survey/excel/PHPExcel/Calculation/Engineering.php
deleted file mode 100644
index fb4bc7d..0000000
--- a/admin/survey/excel/PHPExcel/Calculation/Engineering.php
+++ /dev/null
@@ -1,2502 +0,0 @@
-<?php

-/**

- * PHPExcel

- *

- * Copyright (c) 2006 - 2012 PHPExcel

- *

- * This library is free software; you can redistribute it and/or

- * modify it under the terms of the GNU Lesser General Public

- * License as published by the Free Software Foundation; either

- * version 2.1 of the License, or (at your option) any later version.

- *

- * This library is distributed in the hope that it will be useful,

- * but WITHOUT ANY WARRANTY; without even the implied warranty of

- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU

- * Lesser General Public License for more details.

- *

- * You should have received a copy of the GNU Lesser General Public

- * License along with this library; if not, write to the Free Software

- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA

- *

- * @category	PHPExcel

- * @package		PHPExcel_Calculation

- * @copyright	Copyright (c) 2006 - 2012 PHPExcel (http://www.codeplex.com/PHPExcel)

- * @license		http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL

- * @version		1.7.8, 2012-10-12

- */

-

-

-/** PHPExcel root directory */

-if (!defined('PHPEXCEL_ROOT')) {

-	/**

-	 * @ignore

-	 */

-	define('PHPEXCEL_ROOT', dirname(__FILE__) . '/../../');

-	require(PHPEXCEL_ROOT . 'PHPExcel/Autoloader.php');

-}

-

-

-/** EULER */

-define('EULER', 2.71828182845904523536);

-

-

-/**

- * PHPExcel_Calculation_Engineering

- *

- * @category	PHPExcel

- * @package		PHPExcel_Calculation

- * @copyright	Copyright (c) 2006 - 2012 PHPExcel (http://www.codeplex.com/PHPExcel)

- */

-class PHPExcel_Calculation_Engineering {

-

-	/**

-	 * Details of the Units of measure that can be used in CONVERTUOM()

-	 *

-	 * @var mixed[]

-	 */

-	private static $_conversionUnits = array( 'g'		=> array(	'Group'	=> 'Mass',			'Unit Name'	=> 'Gram',						'AllowPrefix'	=> True		),

-											  'sg'		=> array(	'Group'	=> 'Mass',			'Unit Name'	=> 'Slug',						'AllowPrefix'	=> False	),

-											  'lbm'		=> array(	'Group'	=> 'Mass',			'Unit Name'	=> 'Pound mass (avoirdupois)',	'AllowPrefix'	=> False	),

-											  'u'		=> array(	'Group'	=> 'Mass',			'Unit Name'	=> 'U (atomic mass unit)',		'AllowPrefix'	=> True		),

-											  'ozm'		=> array(	'Group'	=> 'Mass',			'Unit Name'	=> 'Ounce mass (avoirdupois)',	'AllowPrefix'	=> False	),

-											  'm'		=> array(	'Group'	=> 'Distance',		'Unit Name'	=> 'Meter',						'AllowPrefix'	=> True		),

-											  'mi'		=> array(	'Group'	=> 'Distance',		'Unit Name'	=> 'Statute mile',				'AllowPrefix'	=> False	),

-											  'Nmi'		=> array(	'Group'	=> 'Distance',		'Unit Name'	=> 'Nautical mile',				'AllowPrefix'	=> False	),

-											  'in'		=> array(	'Group'	=> 'Distance',		'Unit Name'	=> 'Inch',						'AllowPrefix'	=> False	),

-											  'ft'		=> array(	'Group'	=> 'Distance',		'Unit Name'	=> 'Foot',						'AllowPrefix'	=> False	),

-											  'yd'		=> array(	'Group'	=> 'Distance',		'Unit Name'	=> 'Yard',						'AllowPrefix'	=> False	),

-											  'ang'		=> array(	'Group'	=> 'Distance',		'Unit Name'	=> 'Angstrom',					'AllowPrefix'	=> True		),

-											  'Pica'	=> array(	'Group'	=> 'Distance',		'Unit Name'	=> 'Pica (1/72 in)',			'AllowPrefix'	=> False	),

-											  'yr'		=> array(	'Group'	=> 'Time',			'Unit Name'	=> 'Year',						'AllowPrefix'	=> False	),

-											  'day'		=> array(	'Group'	=> 'Time',			'Unit Name'	=> 'Day',						'AllowPrefix'	=> False	),

-											  'hr'		=> array(	'Group'	=> 'Time',			'Unit Name'	=> 'Hour',						'AllowPrefix'	=> False	),

-											  'mn'		=> array(	'Group'	=> 'Time',			'Unit Name'	=> 'Minute',					'AllowPrefix'	=> False	),

-											  'sec'		=> array(	'Group'	=> 'Time',			'Unit Name'	=> 'Second',					'AllowPrefix'	=> True		),

-											  'Pa'		=> array(	'Group'	=> 'Pressure',		'Unit Name'	=> 'Pascal',					'AllowPrefix'	=> True		),

-											  'p'		=> array(	'Group'	=> 'Pressure',		'Unit Name'	=> 'Pascal',					'AllowPrefix'	=> True		),

-											  'atm'		=> array(	'Group'	=> 'Pressure',		'Unit Name'	=> 'Atmosphere',				'AllowPrefix'	=> True		),

-											  'at'		=> array(	'Group'	=> 'Pressure',		'Unit Name'	=> 'Atmosphere',				'AllowPrefix'	=> True		),

-											  'mmHg'	=> array(	'Group'	=> 'Pressure',		'Unit Name'	=> 'mm of Mercury',				'AllowPrefix'	=> True		),

-											  'N'		=> array(	'Group'	=> 'Force',			'Unit Name'	=> 'Newton',					'AllowPrefix'	=> True		),

-											  'dyn'		=> array(	'Group'	=> 'Force',			'Unit Name'	=> 'Dyne',						'AllowPrefix'	=> True		),

-											  'dy'		=> array(	'Group'	=> 'Force',			'Unit Name'	=> 'Dyne',						'AllowPrefix'	=> True		),

-											  'lbf'		=> array(	'Group'	=> 'Force',			'Unit Name'	=> 'Pound force',				'AllowPrefix'	=> False	),

-											  'J'		=> array(	'Group'	=> 'Energy',		'Unit Name'	=> 'Joule',						'AllowPrefix'	=> True		),

-											  'e'		=> array(	'Group'	=> 'Energy',		'Unit Name'	=> 'Erg',						'AllowPrefix'	=> True		),

-											  'c'		=> array(	'Group'	=> 'Energy',		'Unit Name'	=> 'Thermodynamic calorie',		'AllowPrefix'	=> True		),

-											  'cal'		=> array(	'Group'	=> 'Energy',		'Unit Name'	=> 'IT calorie',				'AllowPrefix'	=> True		),

-											  'eV'		=> array(	'Group'	=> 'Energy',		'Unit Name'	=> 'Electron volt',				'AllowPrefix'	=> True		),

-											  'ev'		=> array(	'Group'	=> 'Energy',		'Unit Name'	=> 'Electron volt',				'AllowPrefix'	=> True		),

-											  'HPh'		=> array(	'Group'	=> 'Energy',		'Unit Name'	=> 'Horsepower-hour',			'AllowPrefix'	=> False	),

-											  'hh'		=> array(	'Group'	=> 'Energy',		'Unit Name'	=> 'Horsepower-hour',			'AllowPrefix'	=> False	),

-											  'Wh'		=> array(	'Group'	=> 'Energy',		'Unit Name'	=> 'Watt-hour',					'AllowPrefix'	=> True		),

-											  'wh'		=> array(	'Group'	=> 'Energy',		'Unit Name'	=> 'Watt-hour',					'AllowPrefix'	=> True		),

-											  'flb'		=> array(	'Group'	=> 'Energy',		'Unit Name'	=> 'Foot-pound',				'AllowPrefix'	=> False	),

-											  'BTU'		=> array(	'Group'	=> 'Energy',		'Unit Name'	=> 'BTU',						'AllowPrefix'	=> False	),

-											  'btu'		=> array(	'Group'	=> 'Energy',		'Unit Name'	=> 'BTU',						'AllowPrefix'	=> False	),

-											  'HP'		=> array(	'Group'	=> 'Power',			'Unit Name'	=> 'Horsepower',				'AllowPrefix'	=> False	),

-											  'h'		=> array(	'Group'	=> 'Power',			'Unit Name'	=> 'Horsepower',				'AllowPrefix'	=> False	),

-											  'W'		=> array(	'Group'	=> 'Power',			'Unit Name'	=> 'Watt',						'AllowPrefix'	=> True		),

-											  'w'		=> array(	'Group'	=> 'Power',			'Unit Name'	=> 'Watt',						'AllowPrefix'	=> True		),

-											  'T'		=> array(	'Group'	=> 'Magnetism',		'Unit Name'	=> 'Tesla',						'AllowPrefix'	=> True		),

-											  'ga'		=> array(	'Group'	=> 'Magnetism',		'Unit Name'	=> 'Gauss',						'AllowPrefix'	=> True		),

-											  'C'		=> array(	'Group'	=> 'Temperature',	'Unit Name'	=> 'Celsius',					'AllowPrefix'	=> False	),

-											  'cel'		=> array(	'Group'	=> 'Temperature',	'Unit Name'	=> 'Celsius',					'AllowPrefix'	=> False	),

-											  'F'		=> array(	'Group'	=> 'Temperature',	'Unit Name'	=> 'Fahrenheit',				'AllowPrefix'	=> False	),

-											  'fah'		=> array(	'Group'	=> 'Temperature',	'Unit Name'	=> 'Fahrenheit',				'AllowPrefix'	=> False	),

-											  'K'		=> array(	'Group'	=> 'Temperature',	'Unit Name'	=> 'Kelvin',					'AllowPrefix'	=> False	),

-											  'kel'		=> array(	'Group'	=> 'Temperature',	'Unit Name'	=> 'Kelvin',					'AllowPrefix'	=> False	),

-											  'tsp'		=> array(	'Group'	=> 'Liquid',		'Unit Name'	=> 'Teaspoon',					'AllowPrefix'	=> False	),

-											  'tbs'		=> array(	'Group'	=> 'Liquid',		'Unit Name'	=> 'Tablespoon',				'AllowPrefix'	=> False	),

-											  'oz'		=> array(	'Group'	=> 'Liquid',		'Unit Name'	=> 'Fluid Ounce',				'AllowPrefix'	=> False	),

-											  'cup'		=> array(	'Group'	=> 'Liquid',		'Unit Name'	=> 'Cup',						'AllowPrefix'	=> False	),

-											  'pt'		=> array(	'Group'	=> 'Liquid',		'Unit Name'	=> 'U.S. Pint',					'AllowPrefix'	=> False	),

-											  'us_pt'	=> array(	'Group'	=> 'Liquid',		'Unit Name'	=> 'U.S. Pint',					'AllowPrefix'	=> False	),

-											  'uk_pt'	=> array(	'Group'	=> 'Liquid',		'Unit Name'	=> 'U.K. Pint',					'AllowPrefix'	=> False	),

-											  'qt'		=> array(	'Group'	=> 'Liquid',		'Unit Name'	=> 'Quart',						'AllowPrefix'	=> False	),

-											  'gal'		=> array(	'Group'	=> 'Liquid',		'Unit Name'	=> 'Gallon',					'AllowPrefix'	=> False	),

-											  'l'		=> array(	'Group'	=> 'Liquid',		'Unit Name'	=> 'Litre',						'AllowPrefix'	=> True		),

-											  'lt'		=> array(	'Group'	=> 'Liquid',		'Unit Name'	=> 'Litre',						'AllowPrefix'	=> True		)

-											);

-

-	/**

-	 * Details of the Multiplier prefixes that can be used with Units of Measure in CONVERTUOM()

-	 *

-	 * @var mixed[]

-	 */

-	private static $_conversionMultipliers = array(	'Y'	=> array(	'multiplier'	=> 1E24,	'name'	=> 'yotta'	),

-													'Z'	=> array(	'multiplier'	=> 1E21,	'name'	=> 'zetta'	),

-													'E'	=> array(	'multiplier'	=> 1E18,	'name'	=> 'exa'	),

-													'P'	=> array(	'multiplier'	=> 1E15,	'name'	=> 'peta'	),

-													'T'	=> array(	'multiplier'	=> 1E12,	'name'	=> 'tera'	),

-													'G'	=> array(	'multiplier'	=> 1E9,		'name'	=> 'giga'	),

-													'M'	=> array(	'multiplier'	=> 1E6,		'name'	=> 'mega'	),

-													'k'	=> array(	'multiplier'	=> 1E3,		'name'	=> 'kilo'	),

-													'h'	=> array(	'multiplier'	=> 1E2,		'name'	=> 'hecto'	),

-													'e'	=> array(	'multiplier'	=> 1E1,		'name'	=> 'deka'	),

-													'd'	=> array(	'multiplier'	=> 1E-1,	'name'	=> 'deci'	),

-													'c'	=> array(	'multiplier'	=> 1E-2,	'name'	=> 'centi'	),

-													'm'	=> array(	'multiplier'	=> 1E-3,	'name'	=> 'milli'	),

-													'u'	=> array(	'multiplier'	=> 1E-6,	'name'	=> 'micro'	),

-													'n'	=> array(	'multiplier'	=> 1E-9,	'name'	=> 'nano'	),

-													'p'	=> array(	'multiplier'	=> 1E-12,	'name'	=> 'pico'	),

-													'f'	=> array(	'multiplier'	=> 1E-15,	'name'	=> 'femto'	),

-													'a'	=> array(	'multiplier'	=> 1E-18,	'name'	=> 'atto'	),

-													'z'	=> array(	'multiplier'	=> 1E-21,	'name'	=> 'zepto'	),

-													'y'	=> array(	'multiplier'	=> 1E-24,	'name'	=> 'yocto'	)

-												 );

-

-	/**

-	 * Details of the Units of measure conversion factors, organised by group

-	 *

-	 * @var mixed[]

-	 */

-	private static $_unitConversions = array(	'Mass'		=> array(	'g'		=> array(	'g'		=> 1.0,

-																							'sg'	=> 6.85220500053478E-05,

-																							'lbm'	=> 2.20462291469134E-03,

-																							'u'		=> 6.02217000000000E+23,

-																							'ozm'	=> 3.52739718003627E-02

-																						),

-																		'sg'	=> array(	'g'		=> 1.45938424189287E+04,

-																							'sg'	=> 1.0,

-																							'lbm'	=> 3.21739194101647E+01,

-																							'u'		=> 8.78866000000000E+27,

-																							'ozm'	=> 5.14782785944229E+02

-																						),

-																		'lbm'	=> array(	'g'		=> 4.5359230974881148E+02,

-																							'sg'	=> 3.10810749306493E-02,

-																							'lbm'	=> 1.0,

-																							'u'		=> 2.73161000000000E+26,

-																							'ozm'	=> 1.60000023429410E+01

-																						),

-																		'u'		=> array(	'g'		=> 1.66053100460465E-24,

-																							'sg'	=> 1.13782988532950E-28,

-																							'lbm'	=> 3.66084470330684E-27,

-																							'u'		=> 1.0,

-																							'ozm'	=> 5.85735238300524E-26

-																						),

-																		'ozm'	=> array(	'g'		=> 2.83495152079732E+01,

-																							'sg'	=> 1.94256689870811E-03,

-																							'lbm'	=> 6.24999908478882E-02,

-																							'u'		=> 1.70725600000000E+25,

-																							'ozm'	=> 1.0

-																						)

-																	),

-												'Distance'	=> array(	'm'		=> array(	'm'		=> 1.0,

-																							'mi'	=> 6.21371192237334E-04,

-																							'Nmi'	=> 5.39956803455724E-04,

-																							'in'	=> 3.93700787401575E+01,

-																							'ft'	=> 3.28083989501312E+00,

-																							'yd'	=> 1.09361329797891E+00,

-																							'ang'	=> 1.00000000000000E+10,

-																							'Pica'	=> 2.83464566929116E+03

-																						),

-																		'mi'	=> array(	'm'		=> 1.60934400000000E+03,

-																							'mi'	=> 1.0,

-																							'Nmi'	=> 8.68976241900648E-01,

-																							'in'	=> 6.33600000000000E+04,

-																							'ft'	=> 5.28000000000000E+03,

-																							'yd'	=> 1.76000000000000E+03,

-																							'ang'	=> 1.60934400000000E+13,

-																							'Pica'	=> 4.56191999999971E+06

-																						),

-																		'Nmi'	=> array(	'm'		=> 1.85200000000000E+03,

-																							'mi'	=> 1.15077944802354E+00,

-																							'Nmi'	=> 1.0,

-																							'in'	=> 7.29133858267717E+04,

-																							'ft'	=> 6.07611548556430E+03,

-																							'yd'	=> 2.02537182785694E+03,

-																							'ang'	=> 1.85200000000000E+13,

-																							'Pica'	=> 5.24976377952723E+06

-																						),

-																		'in'	=> array(	'm'		=> 2.54000000000000E-02,

-																							'mi'	=> 1.57828282828283E-05,

-																							'Nmi'	=> 1.37149028077754E-05,

-																							'in'	=> 1.0,

-																							'ft'	=> 8.33333333333333E-02,

-																							'yd'	=> 2.77777777686643E-02,

-																							'ang'	=> 2.54000000000000E+08,

-																							'Pica'	=> 7.19999999999955E+01

-																						),

-																		'ft'	=> array(	'm'		=> 3.04800000000000E-01,

-																							'mi'	=> 1.89393939393939E-04,

-																							'Nmi'	=> 1.64578833693305E-04,

-																							'in'	=> 1.20000000000000E+01,

-																							'ft'	=> 1.0,

-																							'yd'	=> 3.33333333223972E-01,

-																							'ang'	=> 3.04800000000000E+09,

-																							'Pica'	=> 8.63999999999946E+02

-																						),

-																		'yd'	=> array(	'm'		=> 9.14400000300000E-01,

-																							'mi'	=> 5.68181818368230E-04,

-																							'Nmi'	=> 4.93736501241901E-04,

-																							'in'	=> 3.60000000118110E+01,

-																							'ft'	=> 3.00000000000000E+00,

-																							'yd'	=> 1.0,

-																							'ang'	=> 9.14400000300000E+09,

-																							'Pica'	=> 2.59200000085023E+03

-																						),

-																		'ang'	=> array(	'm'		=> 1.00000000000000E-10,

-																							'mi'	=> 6.21371192237334E-14,

-																							'Nmi'	=> 5.39956803455724E-14,

-																							'in'	=> 3.93700787401575E-09,

-																							'ft'	=> 3.28083989501312E-10,

-																							'yd'	=> 1.09361329797891E-10,

-																							'ang'	=> 1.0,

-																							'Pica'	=> 2.83464566929116E-07

-																						),

-																		'Pica'	=> array(	'm'		=> 3.52777777777800E-04,

-																							'mi'	=> 2.19205948372629E-07,

-																							'Nmi'	=> 1.90484761219114E-07,

-																							'in'	=> 1.38888888888898E-02,

-																							'ft'	=> 1.15740740740748E-03,

-																							'yd'	=> 3.85802469009251E-04,

-																							'ang'	=> 3.52777777777800E+06,

-																							'Pica'	=> 1.0

-																						)

-																	),

-												'Time'		=> array(	'yr'	=> array(	'yr'		=> 1.0,

-																							'day'		=> 365.25,

-																							'hr'		=> 8766.0,

-																							'mn'		=> 525960.0,

-																							'sec'		=> 31557600.0

-																						),

-																		'day'	=> array(	'yr'		=> 2.73785078713210E-03,

-																							'day'		=> 1.0,

-																							'hr'		=> 24.0,

-																							'mn'		=> 1440.0,

-																							'sec'		=> 86400.0

-																						),

-																		'hr'	=> array(	'yr'		=> 1.14077116130504E-04,

-																							'day'		=> 4.16666666666667E-02,

-																							'hr'		=> 1.0,

-																							'mn'		=> 60.0,

-																							'sec'		=> 3600.0

-																						),

-																		'mn'	=> array(	'yr'		=> 1.90128526884174E-06,

-																							'day'		=> 6.94444444444444E-04,

-																							'hr'		=> 1.66666666666667E-02,

-																							'mn'		=> 1.0,

-																							'sec'		=> 60.0

-																						),

-																		'sec'	=> array(	'yr'		=> 3.16880878140289E-08,

-																							'day'		=> 1.15740740740741E-05,

-																							'hr'		=> 2.77777777777778E-04,

-																							'mn'		=> 1.66666666666667E-02,

-																							'sec'		=> 1.0

-																						)

-																	),

-												'Pressure'	=> array(	'Pa'	=> array(	'Pa'		=> 1.0,

-																							'p'			=> 1.0,

-																							'atm'		=> 9.86923299998193E-06,

-																							'at'		=> 9.86923299998193E-06,

-																							'mmHg'		=> 7.50061707998627E-03

-																						),

-																		'p'		=> array(	'Pa'		=> 1.0,

-																							'p'			=> 1.0,

-																							'atm'		=> 9.86923299998193E-06,

-																							'at'		=> 9.86923299998193E-06,

-																							'mmHg'		=> 7.50061707998627E-03

-																						),

-																		'atm'	=> array(	'Pa'		=> 1.01324996583000E+05,

-																							'p'			=> 1.01324996583000E+05,

-																							'atm'		=> 1.0,

-																							'at'		=> 1.0,

-																							'mmHg'		=> 760.0

-																						),

-																		'at'	=> array(	'Pa'		=> 1.01324996583000E+05,

-																							'p'			=> 1.01324996583000E+05,

-																							'atm'		=> 1.0,

-																							'at'		=> 1.0,

-																							'mmHg'		=> 760.0

-																						),

-																		'mmHg'	=> array(	'Pa'		=> 1.33322363925000E+02,

-																							'p'			=> 1.33322363925000E+02,

-																							'atm'		=> 1.31578947368421E-03,

-																							'at'		=> 1.31578947368421E-03,

-																							'mmHg'		=> 1.0

-																						)

-																	),

-												'Force'		=> array(	'N'		=> array(	'N'			=> 1.0,

-																							'dyn'		=> 1.0E+5,

-																							'dy'		=> 1.0E+5,

-																							'lbf'		=> 2.24808923655339E-01

-																						),

-																		'dyn'	=> array(	'N'			=> 1.0E-5,

-																							'dyn'		=> 1.0,

-																							'dy'		=> 1.0,

-																							'lbf'		=> 2.24808923655339E-06

-																						),

-																		'dy'	=> array(	'N'			=> 1.0E-5,

-																							'dyn'		=> 1.0,

-																							'dy'		=> 1.0,

-																							'lbf'		=> 2.24808923655339E-06

-																						),

-																		'lbf'	=> array(	'N'			=> 4.448222,

-																							'dyn'		=> 4.448222E+5,

-																							'dy'		=> 4.448222E+5,

-																							'lbf'		=> 1.0

-																						)

-																	),

-												'Energy'	=> array(	'J'		=> array(	'J'			=> 1.0,

-																							'e'			=> 9.99999519343231E+06,

-																							'c'			=> 2.39006249473467E-01,

-																							'cal'		=> 2.38846190642017E-01,

-																							'eV'		=> 6.24145700000000E+18,

-																							'ev'		=> 6.24145700000000E+18,

-																							'HPh'		=> 3.72506430801000E-07,

-																							'hh'		=> 3.72506430801000E-07,

-																							'Wh'		=> 2.77777916238711E-04,

-																							'wh'		=> 2.77777916238711E-04,

-																							'flb'		=> 2.37304222192651E+01,

-																							'BTU'		=> 9.47815067349015E-04,

-																							'btu'		=> 9.47815067349015E-04

-																						),

-																		'e'		=> array(	'J'			=> 1.00000048065700E-07,

-																							'e'			=> 1.0,

-																							'c'			=> 2.39006364353494E-08,

-																							'cal'		=> 2.38846305445111E-08,

-																							'eV'		=> 6.24146000000000E+11,

-																							'ev'		=> 6.24146000000000E+11,

-																							'HPh'		=> 3.72506609848824E-14,

-																							'hh'		=> 3.72506609848824E-14,

-																							'Wh'		=> 2.77778049754611E-11,

-																							'wh'		=> 2.77778049754611E-11,

-																							'flb'		=> 2.37304336254586E-06,

-																							'BTU'		=> 9.47815522922962E-11,

-																							'btu'		=> 9.47815522922962E-11

-																						),

-																		'c'		=> array(	'J'			=> 4.18399101363672E+00,

-																							'e'			=> 4.18398900257312E+07,

-																							'c'			=> 1.0,

-																							'cal'		=> 9.99330315287563E-01,

-																							'eV'		=> 2.61142000000000E+19,

-																							'ev'		=> 2.61142000000000E+19,

-																							'HPh'		=> 1.55856355899327E-06,

-																							'hh'		=> 1.55856355899327E-06,

-																							'Wh'		=> 1.16222030532950E-03,

-																							'wh'		=> 1.16222030532950E-03,

-																							'flb'		=> 9.92878733152102E+01,

-																							'BTU'		=> 3.96564972437776E-03,

-																							'btu'		=> 3.96564972437776E-03

-																						),

-																		'cal'	=> array(	'J'			=> 4.18679484613929E+00,

-																							'e'			=> 4.18679283372801E+07,

-																							'c'			=> 1.00067013349059E+00,

-																							'cal'		=> 1.0,

-																							'eV'		=> 2.61317000000000E+19,

-																							'ev'		=> 2.61317000000000E+19,

-																							'HPh'		=> 1.55960800463137E-06,

-																							'hh'		=> 1.55960800463137E-06,

-																							'Wh'		=> 1.16299914807955E-03,

-																							'wh'		=> 1.16299914807955E-03,

-																							'flb'		=> 9.93544094443283E+01,

-																							'BTU'		=> 3.96830723907002E-03,

-																							'btu'		=> 3.96830723907002E-03

-																						),

-																		'eV'	=> array(	'J'			=> 1.60219000146921E-19,

-																							'e'			=> 1.60218923136574E-12,

-																							'c'			=> 3.82933423195043E-20,

-																							'cal'		=> 3.82676978535648E-20,

-																							'eV'		=> 1.0,

-																							'ev'		=> 1.0,

-																							'HPh'		=> 5.96826078912344E-26,

-																							'hh'		=> 5.96826078912344E-26,

-																							'Wh'		=> 4.45053000026614E-23,

-																							'wh'		=> 4.45053000026614E-23,

-																							'flb'		=> 3.80206452103492E-18,

-																							'BTU'		=> 1.51857982414846E-22,

-																							'btu'		=> 1.51857982414846E-22

-																						),

-																		'ev'	=> array(	'J'			=> 1.60219000146921E-19,

-																							'e'			=> 1.60218923136574E-12,

-																							'c'			=> 3.82933423195043E-20,

-																							'cal'		=> 3.82676978535648E-20,

-																							'eV'		=> 1.0,

-																							'ev'		=> 1.0,

-																							'HPh'		=> 5.96826078912344E-26,

-																							'hh'		=> 5.96826078912344E-26,

-																							'Wh'		=> 4.45053000026614E-23,

-																							'wh'		=> 4.45053000026614E-23,

-																							'flb'		=> 3.80206452103492E-18,

-																							'BTU'		=> 1.51857982414846E-22,

-																							'btu'		=> 1.51857982414846E-22

-																						),

-																		'HPh'	=> array(	'J'			=> 2.68451741316170E+06,

-																							'e'			=> 2.68451612283024E+13,

-																							'c'			=> 6.41616438565991E+05,

-																							'cal'		=> 6.41186757845835E+05,

-																							'eV'		=> 1.67553000000000E+25,

-																							'ev'		=> 1.67553000000000E+25,

-																							'HPh'		=> 1.0,

-																							'hh'		=> 1.0,

-																							'Wh'		=> 7.45699653134593E+02,

-																							'wh'		=> 7.45699653134593E+02,

-																							'flb'		=> 6.37047316692964E+07,

-																							'BTU'		=> 2.54442605275546E+03,

-																							'btu'		=> 2.54442605275546E+03

-																						),

-																		'hh'	=> array(	'J'			=> 2.68451741316170E+06,

-																							'e'			=> 2.68451612283024E+13,

-																							'c'			=> 6.41616438565991E+05,

-																							'cal'		=> 6.41186757845835E+05,

-																							'eV'		=> 1.67553000000000E+25,

-																							'ev'		=> 1.67553000000000E+25,

-																							'HPh'		=> 1.0,

-																							'hh'		=> 1.0,

-																							'Wh'		=> 7.45699653134593E+02,

-																							'wh'		=> 7.45699653134593E+02,

-																							'flb'		=> 6.37047316692964E+07,

-																							'BTU'		=> 2.54442605275546E+03,

-																							'btu'		=> 2.54442605275546E+03

-																						),

-																		'Wh'	=> array(	'J'			=> 3.59999820554720E+03,

-																							'e'			=> 3.59999647518369E+10,

-																							'c'			=> 8.60422069219046E+02,

-																							'cal'		=> 8.59845857713046E+02,

-																							'eV'		=> 2.24692340000000E+22,

-																							'ev'		=> 2.24692340000000E+22,

-																							'HPh'		=> 1.34102248243839E-03,

-																							'hh'		=> 1.34102248243839E-03,

-																							'Wh'		=> 1.0,

-																							'wh'		=> 1.0,

-																							'flb'		=> 8.54294774062316E+04,

-																							'BTU'		=> 3.41213254164705E+00,

-																							'btu'		=> 3.41213254164705E+00

-																						),

-																		'wh'	=> array(	'J'			=> 3.59999820554720E+03,

-																							'e'			=> 3.59999647518369E+10,

-																							'c'			=> 8.60422069219046E+02,

-																							'cal'		=> 8.59845857713046E+02,

-																							'eV'		=> 2.24692340000000E+22,

-																							'ev'		=> 2.24692340000000E+22,

-																							'HPh'		=> 1.34102248243839E-03,

-																							'hh'		=> 1.34102248243839E-03,

-																							'Wh'		=> 1.0,

-																							'wh'		=> 1.0,

-																							'flb'		=> 8.54294774062316E+04,

-																							'BTU'		=> 3.41213254164705E+00,

-																							'btu'		=> 3.41213254164705E+00

-																						),

-																		'flb'	=> array(	'J'			=> 4.21400003236424E-02,

-																							'e'			=> 4.21399800687660E+05,

-																							'c'			=> 1.00717234301644E-02,

-																							'cal'		=> 1.00649785509554E-02,

-																							'eV'		=> 2.63015000000000E+17,

-																							'ev'		=> 2.63015000000000E+17,

-																							'HPh'		=> 1.56974211145130E-08,

-																							'hh'		=> 1.56974211145130E-08,

-																							'Wh'		=> 1.17055614802000E-05,

-																							'wh'		=> 1.17055614802000E-05,

-																							'flb'		=> 1.0,

-																							'BTU'		=> 3.99409272448406E-05,

-																							'btu'		=> 3.99409272448406E-05

-																						),

-																		'BTU'	=> array(	'J'			=> 1.05505813786749E+03,

-																							'e'			=> 1.05505763074665E+10,

-																							'c'			=> 2.52165488508168E+02,

-																							'cal'		=> 2.51996617135510E+02,

-																							'eV'		=> 6.58510000000000E+21,

-																							'ev'		=> 6.58510000000000E+21,

-																							'HPh'		=> 3.93015941224568E-04,

-																							'hh'		=> 3.93015941224568E-04,

-																							'Wh'		=> 2.93071851047526E-01,

-																							'wh'		=> 2.93071851047526E-01,

-																							'flb'		=> 2.50369750774671E+04,

-																							'BTU'		=> 1.0,

-																							'btu'		=> 1.0,

-																						),

-																		'btu'	=> array(	'J'			=> 1.05505813786749E+03,

-																							'e'			=> 1.05505763074665E+10,

-																							'c'			=> 2.52165488508168E+02,

-																							'cal'		=> 2.51996617135510E+02,

-																							'eV'		=> 6.58510000000000E+21,

-																							'ev'		=> 6.58510000000000E+21,

-																							'HPh'		=> 3.93015941224568E-04,

-																							'hh'		=> 3.93015941224568E-04,

-																							'Wh'		=> 2.93071851047526E-01,

-																							'wh'		=> 2.93071851047526E-01,

-																							'flb'		=> 2.50369750774671E+04,

-																							'BTU'		=> 1.0,

-																							'btu'		=> 1.0,

-																						)

-																	),

-												'Power'		=> array(	'HP'	=> array(	'HP'		=> 1.0,

-																							'h'			=> 1.0,

-																							'W'			=> 7.45701000000000E+02,

-																							'w'			=> 7.45701000000000E+02

-																						),

-																		'h'		=> array(	'HP'		=> 1.0,

-																							'h'			=> 1.0,

-																							'W'			=> 7.45701000000000E+02,

-																							'w'			=> 7.45701000000000E+02

-																						),

-																		'W'		=> array(	'HP'		=> 1.34102006031908E-03,

-																							'h'			=> 1.34102006031908E-03,

-																							'W'			=> 1.0,

-																							'w'			=> 1.0

-																						),

-																		'w'		=> array(	'HP'		=> 1.34102006031908E-03,

-																							'h'			=> 1.34102006031908E-03,

-																							'W'			=> 1.0,

-																							'w'			=> 1.0

-																						)

-																	),

-												'Magnetism'	=> array(	'T'		=> array(	'T'			=> 1.0,

-																							'ga'		=> 10000.0

-																						),

-																		'ga'	=> array(	'T'			=> 0.0001,

-																							'ga'		=> 1.0

-																						)

-																	),

-												'Liquid'	=> array(	'tsp'	=> array(	'tsp'		=> 1.0,

-																							'tbs'		=> 3.33333333333333E-01,

-																							'oz'		=> 1.66666666666667E-01,

-																							'cup'		=> 2.08333333333333E-02,

-																							'pt'		=> 1.04166666666667E-02,

-																							'us_pt'		=> 1.04166666666667E-02,

-																							'uk_pt'		=> 8.67558516821960E-03,

-																							'qt'		=> 5.20833333333333E-03,

-																							'gal'		=> 1.30208333333333E-03,

-																							'l'			=> 4.92999408400710E-03,

-																							'lt'		=> 4.92999408400710E-03

-																						),

-																		'tbs'	=> array(	'tsp'		=> 3.00000000000000E+00,

-																							'tbs'		=> 1.0,

-																							'oz'		=> 5.00000000000000E-01,

-																							'cup'		=> 6.25000000000000E-02,

-																							'pt'		=> 3.12500000000000E-02,

-																							'us_pt'		=> 3.12500000000000E-02,

-																							'uk_pt'		=> 2.60267555046588E-02,

-																							'qt'		=> 1.56250000000000E-02,

-																							'gal'		=> 3.90625000000000E-03,

-																							'l'			=> 1.47899822520213E-02,

-																							'lt'		=> 1.47899822520213E-02

-																						),

-																		'oz'	=> array(	'tsp'		=> 6.00000000000000E+00,

-																							'tbs'		=> 2.00000000000000E+00,

-																							'oz'		=> 1.0,

-																							'cup'		=> 1.25000000000000E-01,

-																							'pt'		=> 6.25000000000000E-02,

-																							'us_pt'		=> 6.25000000000000E-02,

-																							'uk_pt'		=> 5.20535110093176E-02,

-																							'qt'		=> 3.12500000000000E-02,

-																							'gal'		=> 7.81250000000000E-03,

-																							'l'			=> 2.95799645040426E-02,

-																							'lt'		=> 2.95799645040426E-02

-																						),

-																		'cup'	=> array(	'tsp'		=> 4.80000000000000E+01,

-																							'tbs'		=> 1.60000000000000E+01,

-																							'oz'		=> 8.00000000000000E+00,

-																							'cup'		=> 1.0,

-																							'pt'		=> 5.00000000000000E-01,

-																							'us_pt'		=> 5.00000000000000E-01,

-																							'uk_pt'		=> 4.16428088074541E-01,

-																							'qt'		=> 2.50000000000000E-01,

-																							'gal'		=> 6.25000000000000E-02,

-																							'l'			=> 2.36639716032341E-01,

-																							'lt'		=> 2.36639716032341E-01

-																						),

-																		'pt'	=> array(	'tsp'		=> 9.60000000000000E+01,

-																							'tbs'		=> 3.20000000000000E+01,

-																							'oz'		=> 1.60000000000000E+01,

-																							'cup'		=> 2.00000000000000E+00,

-																							'pt'		=> 1.0,

-																							'us_pt'		=> 1.0,

-																							'uk_pt'		=> 8.32856176149081E-01,

-																							'qt'		=> 5.00000000000000E-01,

-																							'gal'		=> 1.25000000000000E-01,

-																							'l'			=> 4.73279432064682E-01,

-																							'lt'		=> 4.73279432064682E-01

-																						),

-																		'us_pt'	=> array(	'tsp'		=> 9.60000000000000E+01,

-																							'tbs'		=> 3.20000000000000E+01,

-																							'oz'		=> 1.60000000000000E+01,

-																							'cup'		=> 2.00000000000000E+00,

-																							'pt'		=> 1.0,

-																							'us_pt'		=> 1.0,

-																							'uk_pt'		=> 8.32856176149081E-01,

-																							'qt'		=> 5.00000000000000E-01,

-																							'gal'		=> 1.25000000000000E-01,

-																							'l'			=> 4.73279432064682E-01,

-																							'lt'		=> 4.73279432064682E-01

-																						),

-																		'uk_pt'	=> array(	'tsp'		=> 1.15266000000000E+02,

-																							'tbs'		=> 3.84220000000000E+01,

-																							'oz'		=> 1.92110000000000E+01,

-																							'cup'		=> 2.40137500000000E+00,

-																							'pt'		=> 1.20068750000000E+00,

-																							'us_pt'		=> 1.20068750000000E+00,

-																							'uk_pt'		=> 1.0,

-																							'qt'		=> 6.00343750000000E-01,

-																							'gal'		=> 1.50085937500000E-01,

-																							'l'			=> 5.68260698087162E-01,

-																							'lt'		=> 5.68260698087162E-01

-																						),

-																		'qt'	=> array(	'tsp'		=> 1.92000000000000E+02,

-																							'tbs'		=> 6.40000000000000E+01,

-																							'oz'		=> 3.20000000000000E+01,

-																							'cup'		=> 4.00000000000000E+00,

-																							'pt'		=> 2.00000000000000E+00,

-																							'us_pt'		=> 2.00000000000000E+00,

-																							'uk_pt'		=> 1.66571235229816E+00,

-																							'qt'		=> 1.0,

-																							'gal'		=> 2.50000000000000E-01,

-																							'l'			=> 9.46558864129363E-01,

-																							'lt'		=> 9.46558864129363E-01

-																						),

-																		'gal'	=> array(	'tsp'		=> 7.68000000000000E+02,

-																							'tbs'		=> 2.56000000000000E+02,

-																							'oz'		=> 1.28000000000000E+02,

-																							'cup'		=> 1.60000000000000E+01,

-																							'pt'		=> 8.00000000000000E+00,

-																							'us_pt'		=> 8.00000000000000E+00,

-																							'uk_pt'		=> 6.66284940919265E+00,

-																							'qt'		=> 4.00000000000000E+00,

-																							'gal'		=> 1.0,

-																							'l'			=> 3.78623545651745E+00,

-																							'lt'		=> 3.78623545651745E+00

-																						),

-																		'l'		=> array(	'tsp'		=> 2.02840000000000E+02,

-																							'tbs'		=> 6.76133333333333E+01,

-																							'oz'		=> 3.38066666666667E+01,

-																							'cup'		=> 4.22583333333333E+00,

-																							'pt'		=> 2.11291666666667E+00,

-																							'us_pt'		=> 2.11291666666667E+00,

-																							'uk_pt'		=> 1.75975569552166E+00,

-																							'qt'		=> 1.05645833333333E+00,

-																							'gal'		=> 2.64114583333333E-01,

-																							'l'			=> 1.0,

-																							'lt'		=> 1.0

-																						),

-																		'lt'	=> array(	'tsp'		=> 2.02840000000000E+02,

-																							'tbs'		=> 6.76133333333333E+01,

-																							'oz'		=> 3.38066666666667E+01,

-																							'cup'		=> 4.22583333333333E+00,

-																							'pt'		=> 2.11291666666667E+00,

-																							'us_pt'		=> 2.11291666666667E+00,

-																							'uk_pt'		=> 1.75975569552166E+00,

-																							'qt'		=> 1.05645833333333E+00,

-																							'gal'		=> 2.64114583333333E-01,

-																							'l'			=> 1.0,

-																							'lt'		=> 1.0

-																						)

-																	)

-											);

-

-

-	/**

-	 * _parseComplex

-	 *

-	 * Parses a complex number into its real and imaginary parts, and an I or J suffix

-	 *

-	 * @param	string		$complexNumber	The complex number

-	 * @return	string[]	Indexed on "real", "imaginary" and "suffix"

-	 */

-	public static function _parseComplex($complexNumber) {

-		$workString = (string) $complexNumber;

-

-		$realNumber = $imaginary = 0;

-		//	Extract the suffix, if there is one

-		$suffix = substr($workString,-1);

-		if (!is_numeric($suffix)) {

-			$workString = substr($workString,0,-1);

-		} else {

-			$suffix = '';

-		}

-

-		//	Split the input into its Real and Imaginary components

-		$leadingSign = 0;

-		if (strlen($workString) > 0) {

-			$leadingSign = (($workString{0} == '+') || ($workString{0} == '-')) ? 1 : 0;

-		}

-		$power = '';

-		$realNumber = strtok($workString, '+-');

-		if (strtoupper(substr($realNumber,-1)) == 'E') {

-			$power = strtok('+-');

-			++$leadingSign;

-		}

-

-		$realNumber = substr($workString,0,strlen($realNumber)+strlen($power)+$leadingSign);

-

-		if ($suffix != '') {

-			$imaginary = substr($workString,strlen($realNumber));

-

-			if (($imaginary == '') && (($realNumber == '') || ($realNumber == '+') || ($realNumber == '-'))) {

-				$imaginary = $realNumber.'1';

-				$realNumber = '0';

-			} else if ($imaginary == '') {

-				$imaginary = $realNumber;

-				$realNumber = '0';

-			} elseif (($imaginary == '+') || ($imaginary == '-')) {

-				$imaginary .= '1';

-			}

-		}

-

-		return array( 'real'		=> $realNumber,

-					  'imaginary'	=> $imaginary,

-					  'suffix'		=> $suffix

-					);

-	}	//	function _parseComplex()

-

-

-	/**

-	 * _cleanComplex

-	 *

-	 * Cleans the leading characters in a complex number string

-	 *

-	 * @param	string		$complexNumber	The complex number to clean

-	 * @return	string		The "cleaned" complex number

-	 */

-	private static function _cleanComplex($complexNumber) {

-		if ($complexNumber{0} == '+') $complexNumber = substr($complexNumber,1);

-		if ($complexNumber{0} == '0') $complexNumber = substr($complexNumber,1);

-		if ($complexNumber{0} == '.') $complexNumber = '0'.$complexNumber;

-		if ($complexNumber{0} == '+') $complexNumber = substr($complexNumber,1);

-		return $complexNumber;

-	}

-

-

-	private static function _nbrConversionFormat($xVal,$places) {

-		if (!is_null($places)) {

-			if (strlen($xVal) <= $places) {

-				return substr(str_pad($xVal,$places,'0',STR_PAD_LEFT),-10);

-			} else {

-				return PHPExcel_Calculation_Functions::NaN();

-			}

-		}

-

-		return substr($xVal,-10);

-	}	//	function _nbrConversionFormat()

-

-

-	/**

-	 *	BESSELI

-	 *

-	 *	Returns the modified Bessel function In(x), which is equivalent to the Bessel function evaluated

-	 *		for purely imaginary arguments

-	 *

-	 *	Excel Function:

-	 *		BESSELI(x,ord)

-	 *

-	 *	@access	public

-	 *	@category Engineering Functions

-	 *	@param	float		$x		The value at which to evaluate the function.

-	 *								If x is nonnumeric, BESSELI returns the #VALUE! error value.

-	 *	@param	integer		$ord	The order of the Bessel function.

-	 *								If ord is not an integer, it is truncated.

-	 *								If $ord is nonnumeric, BESSELI returns the #VALUE! error value.

-	 *								If $ord < 0, BESSELI returns the #NUM! error value.

-	 *	@return	float

-	 *

-	 */

-	public static function BESSELI($x, $ord) {

-		$x	= (is_null($x))	? 0.0 :	PHPExcel_Calculation_Functions::flattenSingleValue($x);

-		$ord	= (is_null($ord))	? 0.0 :	PHPExcel_Calculation_Functions::flattenSingleValue($ord);

-

-		if ((is_numeric($x)) && (is_numeric($ord))) {

-			$ord	= floor($ord);

-			if ($ord < 0) {

-				return PHPExcel_Calculation_Functions::NaN();

-			}

-

-			if (abs($x) <= 30) {

-				$fResult = $fTerm = pow($x / 2, $ord) / PHPExcel_Calculation_MathTrig::FACT($ord);

-				$ordK = 1;

-				$fSqrX = ($x * $x) / 4;

-				do {

-					$fTerm *= $fSqrX;

-					$fTerm /= ($ordK * ($ordK + $ord));

-					$fResult += $fTerm;

-				} while ((abs($fTerm) > 1e-12) && (++$ordK < 100));

-			} else {

-				$f_2_PI = 2 * M_PI;

-

-				$fXAbs = abs($x);

-				$fResult = exp($fXAbs) / sqrt($f_2_PI * $fXAbs);

-				if (($ord & 1) && ($x < 0)) {

-					$fResult = -$fResult;

-				}

-			}

-			return (is_nan($fResult)) ? PHPExcel_Calculation_Functions::NaN() : $fResult;

-		}

-		return PHPExcel_Calculation_Functions::VALUE();

-	}	//	function BESSELI()

-

-

-	/**

-	 *	BESSELJ

-	 *

-	 *	Returns the Bessel function

-	 *

-	 *	Excel Function:

-	 *		BESSELJ(x,ord)

-	 *

-	 *	@access	public

-	 *	@category Engineering Functions

-	 *	@param	float		$x		The value at which to evaluate the function.

-	 *								If x is nonnumeric, BESSELJ returns the #VALUE! error value.

-	 *	@param	integer		$ord	The order of the Bessel function. If n is not an integer, it is truncated.

-	 *								If $ord is nonnumeric, BESSELJ returns the #VALUE! error value.

-	 *								If $ord < 0, BESSELJ returns the #NUM! error value.

-	 *	@return	float

-	 *

-	 */

-	public static function BESSELJ($x, $ord) {

-		$x	= (is_null($x))	? 0.0 :	PHPExcel_Calculation_Functions::flattenSingleValue($x);

-		$ord	= (is_null($ord))	? 0.0 :	PHPExcel_Calculation_Functions::flattenSingleValue($ord);

-

-		if ((is_numeric($x)) && (is_numeric($ord))) {

-			$ord	= floor($ord);

-			if ($ord < 0) {

-				return PHPExcel_Calculation_Functions::NaN();

-			}

-

-			$fResult = 0;

-			if (abs($x) <= 30) {

-				$fResult = $fTerm = pow($x / 2, $ord) / PHPExcel_Calculation_MathTrig::FACT($ord);

-				$ordK = 1;

-				$fSqrX = ($x * $x) / -4;

-				do {

-					$fTerm *= $fSqrX;

-					$fTerm /= ($ordK * ($ordK + $ord));

-					$fResult += $fTerm;

-				} while ((abs($fTerm) > 1e-12) && (++$ordK < 100));

-			} else {

-				$f_PI_DIV_2 = M_PI / 2;

-				$f_PI_DIV_4 = M_PI / 4;

-

-				$fXAbs = abs($x);

-				$fResult = sqrt(M_2DIVPI / $fXAbs) * cos($fXAbs - $ord * $f_PI_DIV_2 - $f_PI_DIV_4);

-				if (($ord & 1) && ($x < 0)) {

-					$fResult = -$fResult;

-				}

-			}

-			return (is_nan($fResult)) ? PHPExcel_Calculation_Functions::NaN() : $fResult;

-		}

-		return PHPExcel_Calculation_Functions::VALUE();

-	}	//	function BESSELJ()

-

-

-	private static function _Besselk0($fNum) {

-		if ($fNum <= 2) {

-			$fNum2 = $fNum * 0.5;

-			$y = ($fNum2 * $fNum2);

-			$fRet = -log($fNum2) * self::BESSELI($fNum, 0) +

-					(-0.57721566 + $y * (0.42278420 + $y * (0.23069756 + $y * (0.3488590e-1 + $y * (0.262698e-2 + $y *

-					(0.10750e-3 + $y * 0.74e-5))))));

-		} else {

-			$y = 2 / $fNum;

-			$fRet = exp(-$fNum) / sqrt($fNum) *

-					(1.25331414 + $y * (-0.7832358e-1 + $y * (0.2189568e-1 + $y * (-0.1062446e-1 + $y *

-					(0.587872e-2 + $y * (-0.251540e-2 + $y * 0.53208e-3))))));

-		}

-		return $fRet;

-	}	//	function _Besselk0()

-

-

-	private static function _Besselk1($fNum) {

-		if ($fNum <= 2) {

-			$fNum2 = $fNum * 0.5;

-			$y = ($fNum2 * $fNum2);

-			$fRet = log($fNum2) * self::BESSELI($fNum, 1) +

-					(1 + $y * (0.15443144 + $y * (-0.67278579 + $y * (-0.18156897 + $y * (-0.1919402e-1 + $y *

-					(-0.110404e-2 + $y * (-0.4686e-4))))))) / $fNum;

-		} else {

-			$y = 2 / $fNum;

-			$fRet = exp(-$fNum) / sqrt($fNum) *

-					(1.25331414 + $y * (0.23498619 + $y * (-0.3655620e-1 + $y * (0.1504268e-1 + $y * (-0.780353e-2 + $y *

-					(0.325614e-2 + $y * (-0.68245e-3)))))));

-		}

-		return $fRet;

-	}	//	function _Besselk1()

-

-

-	/**

-	 *	BESSELK

-	 *

-	 *	Returns the modified Bessel function Kn(x), which is equivalent to the Bessel functions evaluated

-	 *		for purely imaginary arguments.

-	 *

-	 *	Excel Function:

-	 *		BESSELK(x,ord)

-	 *

-	 *	@access	public

-	 *	@category Engineering Functions

-	 *	@param	float		$x		The value at which to evaluate the function.

-	 *								If x is nonnumeric, BESSELK returns the #VALUE! error value.

-	 *	@param	integer		$ord	The order of the Bessel function. If n is not an integer, it is truncated.

-	 *								If $ord is nonnumeric, BESSELK returns the #VALUE! error value.

-	 *								If $ord < 0, BESSELK returns the #NUM! error value.

-	 *	@return	float

-	 *

-	 */

-	public static function BESSELK($x, $ord) {

-		$x		= (is_null($x))		? 0.0 :	PHPExcel_Calculation_Functions::flattenSingleValue($x);

-		$ord	= (is_null($ord))	? 0.0 :	PHPExcel_Calculation_Functions::flattenSingleValue($ord);

-

-		if ((is_numeric($x)) && (is_numeric($ord))) {

-			if (($ord < 0) || ($x == 0.0)) {

-				return PHPExcel_Calculation_Functions::NaN();

-			}

-

-			switch(floor($ord)) {

-				case 0 :	return self::_Besselk0($x);

-							break;

-				case 1 :	return self::_Besselk1($x);

-							break;

-				default :	$fTox	= 2 / $x;

-							$fBkm	= self::_Besselk0($x);

-							$fBk	= self::_Besselk1($x);

-							for ($n = 1; $n < $ord; ++$n) {

-								$fBkp	= $fBkm + $n * $fTox * $fBk;

-								$fBkm	= $fBk;

-								$fBk	= $fBkp;

-							}

-			}

-			return (is_nan($fBk)) ? PHPExcel_Calculation_Functions::NaN() : $fBk;

-		}

-		return PHPExcel_Calculation_Functions::VALUE();

-	}	//	function BESSELK()

-

-

-	private static function _Bessely0($fNum) {

-		if ($fNum < 8.0) {

-			$y = ($fNum * $fNum);

-			$f1 = -2957821389.0 + $y * (7062834065.0 + $y * (-512359803.6 + $y * (10879881.29 + $y * (-86327.92757 + $y * 228.4622733))));

-			$f2 = 40076544269.0 + $y * (745249964.8 + $y * (7189466.438 + $y * (47447.26470 + $y * (226.1030244 + $y))));

-			$fRet = $f1 / $f2 + 0.636619772 * self::BESSELJ($fNum, 0) * log($fNum);

-		} else {

-			$z = 8.0 / $fNum;

-			$y = ($z * $z);

-			$xx = $fNum - 0.785398164;

-			$f1 = 1 + $y * (-0.1098628627e-2 + $y * (0.2734510407e-4 + $y * (-0.2073370639e-5 + $y * 0.2093887211e-6)));

-			$f2 = -0.1562499995e-1 + $y * (0.1430488765e-3 + $y * (-0.6911147651e-5 + $y * (0.7621095161e-6 + $y * (-0.934945152e-7))));

-			$fRet = sqrt(0.636619772 / $fNum) * (sin($xx) * $f1 + $z * cos($xx) * $f2);

-		}

-		return $fRet;

-	}	//	function _Bessely0()

-

-

-	private static function _Bessely1($fNum) {

-		if ($fNum < 8.0) {

-			$y = ($fNum * $fNum);

-			$f1 = $fNum * (-0.4900604943e13 + $y * (0.1275274390e13 + $y * (-0.5153438139e11 + $y * (0.7349264551e9 + $y *

-				(-0.4237922726e7 + $y * 0.8511937935e4)))));

-			$f2 = 0.2499580570e14 + $y * (0.4244419664e12 + $y * (0.3733650367e10 + $y * (0.2245904002e8 + $y *

-				(0.1020426050e6 + $y * (0.3549632885e3 + $y)))));

-			$fRet = $f1 / $f2 + 0.636619772 * ( self::BESSELJ($fNum, 1) * log($fNum) - 1 / $fNum);

-		} else {

-			$fRet = sqrt(0.636619772 / $fNum) * sin($fNum - 2.356194491);

-		}

-		return $fRet;

-	}	//	function _Bessely1()

-

-

-	/**

-	 *	BESSELY

-	 *

-	 *	Returns the Bessel function, which is also called the Weber function or the Neumann function.

-	 *

-	 *	Excel Function:

-	 *		BESSELY(x,ord)

-	 *

-	 *	@access	public

-	 *	@category Engineering Functions

-	 *	@param	float		$x		The value at which to evaluate the function.

-	 *								If x is nonnumeric, BESSELK returns the #VALUE! error value.

-	 *	@param	integer		$ord	The order of the Bessel function. If n is not an integer, it is truncated.

-	 *								If $ord is nonnumeric, BESSELK returns the #VALUE! error value.

-	 *								If $ord < 0, BESSELK returns the #NUM! error value.

-	 *

-	 *	@return	float

-	 */

-	public static function BESSELY($x, $ord) {

-		$x		= (is_null($x))		? 0.0 :	PHPExcel_Calculation_Functions::flattenSingleValue($x);

-		$ord	= (is_null($ord))	? 0.0 :	PHPExcel_Calculation_Functions::flattenSingleValue($ord);

-

-		if ((is_numeric($x)) && (is_numeric($ord))) {

-			if (($ord < 0) || ($x == 0.0)) {

-				return PHPExcel_Calculation_Functions::NaN();

-			}

-

-			switch(floor($ord)) {

-				case 0 :	return self::_Bessely0($x);

-							break;

-				case 1 :	return self::_Bessely1($x);

-							break;

-				default:	$fTox	= 2 / $x;

-							$fBym	= self::_Bessely0($x);

-							$fBy	= self::_Bessely1($x);

-							for ($n = 1; $n < $ord; ++$n) {

-								$fByp	= $n * $fTox * $fBy - $fBym;

-								$fBym	= $fBy;

-								$fBy	= $fByp;

-							}

-			}

-			return (is_nan($fBy)) ? PHPExcel_Calculation_Functions::NaN() : $fBy;

-		}

-		return PHPExcel_Calculation_Functions::VALUE();

-	}	//	function BESSELY()

-

-

-	/**

-	 * BINTODEC

-	 *

-	 * Return a binary value as decimal.

-	 *

-	 * Excel Function:

-	 *		BIN2DEC(x)

-	 *

-	 * @access	public

-	 * @category Engineering Functions

-	 * @param	string		$x		The binary number (as a string) that you want to convert. The number

-	 *								cannot contain more than 10 characters (10 bits). The most significant

-	 *								bit of number is the sign bit. The remaining 9 bits are magnitude bits.

-	 *								Negative numbers are represented using two's-complement notation.

-	 *								If number is not a valid binary number, or if number contains more than

-	 *								10 characters (10 bits), BIN2DEC returns the #NUM! error value.

-	 * @return	string

-	 */

-	public static function BINTODEC($x) {

-		$x	= PHPExcel_Calculation_Functions::flattenSingleValue($x);

-

-		if (is_bool($x)) {

-			if (PHPExcel_Calculation_Functions::getCompatibilityMode() == PHPExcel_Calculation_Functions::COMPATIBILITY_OPENOFFICE) {

-				$x = (int) $x;

-			} else {

-				return PHPExcel_Calculation_Functions::VALUE();

-			}

-		}

-		if (PHPExcel_Calculation_Functions::getCompatibilityMode() == PHPExcel_Calculation_Functions::COMPATIBILITY_GNUMERIC) {

-			$x = floor($x);

-		}

-		$x = (string) $x;

-		if (strlen($x) > preg_match_all('/[01]/',$x,$out)) {

-			return PHPExcel_Calculation_Functions::NaN();

-		}

-		if (strlen($x) > 10) {

-			return PHPExcel_Calculation_Functions::NaN();

-		} elseif (strlen($x) == 10) {

-			//	Two's Complement

-			$x = substr($x,-9);

-			return '-'.(512-bindec($x));

-		}

-		return bindec($x);

-	}	//	function BINTODEC()

-

-

-	/**

-	 * BINTOHEX

-	 *

-	 * Return a binary value as hex.

-	 *

-	 * Excel Function:

-	 *		BIN2HEX(x[,places])

-	 *

-	 * @access	public

-	 * @category Engineering Functions

-	 * @param	string		$x		The binary number (as a string) that you want to convert. The number

-	 *								cannot contain more than 10 characters (10 bits). The most significant

-	 *								bit of number is the sign bit. The remaining 9 bits are magnitude bits.

-	 *								Negative numbers are represented using two's-complement notation.

-	 *								If number is not a valid binary number, or if number contains more than

-	 *								10 characters (10 bits), BIN2HEX returns the #NUM! error value.

-	 * @param	integer		$places	The number of characters to use. If places is omitted, BIN2HEX uses the

-	 *								minimum number of characters necessary. Places is useful for padding the

-	 *								return value with leading 0s (zeros).

-	 *								If places is not an integer, it is truncated.

-	 *								If places is nonnumeric, BIN2HEX returns the #VALUE! error value.

-	 *								If places is negative, BIN2HEX returns the #NUM! error value.

-	 * @return	string

-	 */

-	public static function BINTOHEX($x, $places=NULL) {

-		$x	= PHPExcel_Calculation_Functions::flattenSingleValue($x);

-		$places	= PHPExcel_Calculation_Functions::flattenSingleValue($places);

-

-		if (is_bool($x)) {

-			if (PHPExcel_Calculation_Functions::getCompatibilityMode() == PHPExcel_Calculation_Functions::COMPATIBILITY_OPENOFFICE) {

-				$x = (int) $x;

-			} else {

-				return PHPExcel_Calculation_Functions::VALUE();

-			}

-		}

-		if (PHPExcel_Calculation_Functions::getCompatibilityMode() == PHPExcel_Calculation_Functions::COMPATIBILITY_GNUMERIC) {

-			$x = floor($x);

-		}

-		$x = (string) $x;

-		if (strlen($x) > preg_match_all('/[01]/',$x,$out)) {

-			return PHPExcel_Calculation_Functions::NaN();

-		}

-		if (strlen($x) > 10) {

-			return PHPExcel_Calculation_Functions::NaN();

-		} elseif (strlen($x) == 10) {

-			//	Two's Complement

-			return str_repeat('F',8).substr(strtoupper(dechex(bindec(substr($x,-9)))),-2);

-		}

-		$hexVal = (string) strtoupper(dechex(bindec($x)));

-

-		return self::_nbrConversionFormat($hexVal,$places);

-	}	//	function BINTOHEX()

-

-

-	/**

-	 * BINTOOCT

-	 *

-	 * Return a binary value as octal.

-	 *

-	 * Excel Function:

-	 *		BIN2OCT(x[,places])

-	 *

-	 * @access	public

-	 * @category Engineering Functions

-	 * @param	string		$x		The binary number (as a string) that you want to convert. The number

-	 *								cannot contain more than 10 characters (10 bits). The most significant

-	 *								bit of number is the sign bit. The remaining 9 bits are magnitude bits.

-	 *								Negative numbers are represented using two's-complement notation.

-	 *								If number is not a valid binary number, or if number contains more than

-	 *								10 characters (10 bits), BIN2OCT returns the #NUM! error value.

-	 * @param	integer		$places	The number of characters to use. If places is omitted, BIN2OCT uses the

-	 *								minimum number of characters necessary. Places is useful for padding the

-	 *								return value with leading 0s (zeros).

-	 *								If places is not an integer, it is truncated.

-	 *								If places is nonnumeric, BIN2OCT returns the #VALUE! error value.

-	 *								If places is negative, BIN2OCT returns the #NUM! error value.

-	 * @return	string

-	 */

-	public static function BINTOOCT($x, $places=NULL) {

-		$x	= PHPExcel_Calculation_Functions::flattenSingleValue($x);

-		$places	= PHPExcel_Calculation_Functions::flattenSingleValue($places);

-

-		if (is_bool($x)) {

-			if (PHPExcel_Calculation_Functions::getCompatibilityMode() == PHPExcel_Calculation_Functions::COMPATIBILITY_OPENOFFICE) {

-				$x = (int) $x;

-			} else {

-				return PHPExcel_Calculation_Functions::VALUE();

-			}

-		}

-		if (PHPExcel_Calculation_Functions::getCompatibilityMode() == PHPExcel_Calculation_Functions::COMPATIBILITY_GNUMERIC) {

-			$x = floor($x);

-		}

-		$x = (string) $x;

-		if (strlen($x) > preg_match_all('/[01]/',$x,$out)) {

-			return PHPExcel_Calculation_Functions::NaN();

-		}

-		if (strlen($x) > 10) {

-			return PHPExcel_Calculation_Functions::NaN();

-		} elseif (strlen($x) == 10) {

-			//	Two's Complement

-			return str_repeat('7',7).substr(strtoupper(decoct(bindec(substr($x,-9)))),-3);

-		}

-		$octVal = (string) decoct(bindec($x));

-

-		return self::_nbrConversionFormat($octVal,$places);

-	}	//	function BINTOOCT()

-

-

-	/**

-	 * DECTOBIN

-	 *

-	 * Return a decimal value as binary.

-	 *

-	 * Excel Function:

-	 *		DEC2BIN(x[,places])

-	 *

-	 * @access	public

-	 * @category Engineering Functions

-	 * @param	string		$x		The decimal integer you want to convert. If number is negative,

-	 *								valid place values are ignored and DEC2BIN returns a 10-character

-	 *								(10-bit) binary number in which the most significant bit is the sign

-	 *								bit. The remaining 9 bits are magnitude bits. Negative numbers are

-	 *								represented using two's-complement notation.

-	 *								If number < -512 or if number > 511, DEC2BIN returns the #NUM! error

-	 *								value.

-	 *								If number is nonnumeric, DEC2BIN returns the #VALUE! error value.

-	 *								If DEC2BIN requires more than places characters, it returns the #NUM!

-	 *								error value.

-	 * @param	integer		$places	The number of characters to use. If places is omitted, DEC2BIN uses

-	 *								the minimum number of characters necessary. Places is useful for

-	 *								padding the return value with leading 0s (zeros).

-	 *								If places is not an integer, it is truncated.

-	 *								If places is nonnumeric, DEC2BIN returns the #VALUE! error value.

-	 *								If places is zero or negative, DEC2BIN returns the #NUM! error value.

-	 * @return	string

-	 */

-	public static function DECTOBIN($x, $places=NULL) {

-		$x	= PHPExcel_Calculation_Functions::flattenSingleValue($x);

-		$places	= PHPExcel_Calculation_Functions::flattenSingleValue($places);

-

-		if (is_bool($x)) {

-			if (PHPExcel_Calculation_Functions::getCompatibilityMode() == PHPExcel_Calculation_Functions::COMPATIBILITY_OPENOFFICE) {

-				$x = (int) $x;

-			} else {

-				return PHPExcel_Calculation_Functions::VALUE();

-			}

-		}

-		$x = (string) $x;

-		if (strlen($x) > preg_match_all('/[-0123456789.]/',$x,$out)) {

-			return PHPExcel_Calculation_Functions::VALUE();

-		}

-		$x = (string) floor($x);

-		$r = decbin($x);

-		if (strlen($r) == 32) {

-			//	Two's Complement

-			$r = substr($r,-10);

-		} elseif (strlen($r) > 11) {

-			return PHPExcel_Calculation_Functions::NaN();

-		}

-

-		return self::_nbrConversionFormat($r,$places);

-	}	//	function DECTOBIN()

-

-

-	/**

-	 * DECTOHEX

-	 *

-	 * Return a decimal value as hex.

-	 *

-	 * Excel Function:

-	 *		DEC2HEX(x[,places])

-	 *

-	 * @access	public

-	 * @category Engineering Functions

-	 * @param	string		$x		The decimal integer you want to convert. If number is negative,

-	 *								places is ignored and DEC2HEX returns a 10-character (40-bit)

-	 *								hexadecimal number in which the most significant bit is the sign

-	 *								bit. The remaining 39 bits are magnitude bits. Negative numbers

-	 *								are represented using two's-complement notation.

-	 *								If number < -549,755,813,888 or if number > 549,755,813,887,

-	 *								DEC2HEX returns the #NUM! error value.

-	 *								If number is nonnumeric, DEC2HEX returns the #VALUE! error value.

-	 *								If DEC2HEX requires more than places characters, it returns the

-	 *								#NUM! error value.

-	 * @param	integer		$places	The number of characters to use. If places is omitted, DEC2HEX uses

-	 *								the minimum number of characters necessary. Places is useful for

-	 *								padding the return value with leading 0s (zeros).

-	 *								If places is not an integer, it is truncated.

-	 *								If places is nonnumeric, DEC2HEX returns the #VALUE! error value.

-	 *								If places is zero or negative, DEC2HEX returns the #NUM! error value.

-	 * @return	string

-	 */

-	public static function DECTOHEX($x, $places=null) {

-		$x	= PHPExcel_Calculation_Functions::flattenSingleValue($x);

-		$places	= PHPExcel_Calculation_Functions::flattenSingleValue($places);

-

-		if (is_bool($x)) {

-			if (PHPExcel_Calculation_Functions::getCompatibilityMode() == PHPExcel_Calculation_Functions::COMPATIBILITY_OPENOFFICE) {

-				$x = (int) $x;

-			} else {

-				return PHPExcel_Calculation_Functions::VALUE();

-			}

-		}

-		$x = (string) $x;

-		if (strlen($x) > preg_match_all('/[-0123456789.]/',$x,$out)) {

-			return PHPExcel_Calculation_Functions::VALUE();

-		}

-		$x = (string) floor($x);

-		$r = strtoupper(dechex($x));

-		if (strlen($r) == 8) {

-			//	Two's Complement

-			$r = 'FF'.$r;

-		}

-

-		return self::_nbrConversionFormat($r,$places);

-	}	//	function DECTOHEX()

-

-

-	/**

-	 * DECTOOCT

-	 *

-	 * Return an decimal value as octal.

-	 *

-	 * Excel Function:

-	 *		DEC2OCT(x[,places])

-	 *

-	 * @access	public

-	 * @category Engineering Functions

-	 * @param	string		$x		The decimal integer you want to convert. If number is negative,

-	 *								places is ignored and DEC2OCT returns a 10-character (30-bit)

-	 *								octal number in which the most significant bit is the sign bit.

-	 *								The remaining 29 bits are magnitude bits. Negative numbers are

-	 *								represented using two's-complement notation.

-	 *								If number < -536,870,912 or if number > 536,870,911, DEC2OCT

-	 *								returns the #NUM! error value.

-	 *								If number is nonnumeric, DEC2OCT returns the #VALUE! error value.

-	 *								If DEC2OCT requires more than places characters, it returns the

-	 *								#NUM! error value.

-	 * @param	integer		$places	The number of characters to use. If places is omitted, DEC2OCT uses

-	 *								the minimum number of characters necessary. Places is useful for

-	 *								padding the return value with leading 0s (zeros).

-	 *								If places is not an integer, it is truncated.

-	 *								If places is nonnumeric, DEC2OCT returns the #VALUE! error value.

-	 *								If places is zero or negative, DEC2OCT returns the #NUM! error value.

-	 * @return	string

-	 */

-	public static function DECTOOCT($x, $places=null) {

-		$x	= PHPExcel_Calculation_Functions::flattenSingleValue($x);

-		$places	= PHPExcel_Calculation_Functions::flattenSingleValue($places);

-

-		if (is_bool($x)) {

-			if (PHPExcel_Calculation_Functions::getCompatibilityMode() == PHPExcel_Calculation_Functions::COMPATIBILITY_OPENOFFICE) {

-				$x = (int) $x;

-			} else {

-				return PHPExcel_Calculation_Functions::VALUE();

-			}

-		}

-		$x = (string) $x;

-		if (strlen($x) > preg_match_all('/[-0123456789.]/',$x,$out)) {

-			return PHPExcel_Calculation_Functions::VALUE();

-		}

-		$x = (string) floor($x);

-		$r = decoct($x);

-		if (strlen($r) == 11) {

-			//	Two's Complement

-			$r = substr($r,-10);

-		}

-

-		return self::_nbrConversionFormat($r,$places);

-	}	//	function DECTOOCT()

-

-

-	/**

-	 * HEXTOBIN

-	 *

-	 * Return a hex value as binary.

-	 *

-	 * Excel Function:

-	 *		HEX2BIN(x[,places])

-	 *

-	 * @access	public

-	 * @category Engineering Functions

-	 * @param	string		$x			the hexadecimal number you want to convert. Number cannot

-	 *									contain more than 10 characters. The most significant bit of

-	 *									number is the sign bit (40th bit from the right). The remaining

-	 *									9 bits are magnitude bits. Negative numbers are represented

-	 *									using two's-complement notation.

-	 *									If number is negative, HEX2BIN ignores places and returns a

-	 *									10-character binary number.

-	 *									If number is negative, it cannot be less than FFFFFFFE00, and

-	 *									if number is positive, it cannot be greater than 1FF.

-	 *									If number is not a valid hexadecimal number, HEX2BIN returns

-	 *									the #NUM! error value.

-	 *									If HEX2BIN requires more than places characters, it returns

-	 *									the #NUM! error value.

-	 * @param	integer		$places		The number of characters to use. If places is omitted,

-	 *									HEX2BIN uses the minimum number of characters necessary. Places

-	 *									is useful for padding the return value with leading 0s (zeros).

-	 *									If places is not an integer, it is truncated.

-	 *									If places is nonnumeric, HEX2BIN returns the #VALUE! error value.

-	 *									If places is negative, HEX2BIN returns the #NUM! error value.

-	 * @return	string

-	 */

-	public static function HEXTOBIN($x, $places=null) {

-		$x	= PHPExcel_Calculation_Functions::flattenSingleValue($x);

-		$places	= PHPExcel_Calculation_Functions::flattenSingleValue($places);

-

-		if (is_bool($x)) {

-			return PHPExcel_Calculation_Functions::VALUE();

-		}

-		$x = (string) $x;

-		if (strlen($x) > preg_match_all('/[0123456789ABCDEF]/',strtoupper($x),$out)) {

-			return PHPExcel_Calculation_Functions::NaN();

-		}

-		$binVal = decbin(hexdec($x));

-

-		return substr(self::_nbrConversionFormat($binVal,$places),-10);

-	}	//	function HEXTOBIN()

-

-

-	/**

-	 * HEXTODEC

-	 *

-	 * Return a hex value as decimal.

-	 *

-	 * Excel Function:

-	 *		HEX2DEC(x)

-	 *

-	 * @access	public

-	 * @category Engineering Functions

-	 * @param	string		$x		The hexadecimal number you want to convert. This number cannot

-	 *								contain more than 10 characters (40 bits). The most significant

-	 *								bit of number is the sign bit. The remaining 39 bits are magnitude

-	 *								bits. Negative numbers are represented using two's-complement

-	 *								notation.

-	 *								If number is not a valid hexadecimal number, HEX2DEC returns the

-	 *								#NUM! error value.

-	 * @return	string

-	 */

-	public static function HEXTODEC($x) {

-		$x	= PHPExcel_Calculation_Functions::flattenSingleValue($x);

-

-		if (is_bool($x)) {

-			return PHPExcel_Calculation_Functions::VALUE();

-		}

-		$x = (string) $x;

-		if (strlen($x) > preg_match_all('/[0123456789ABCDEF]/',strtoupper($x),$out)) {

-			return PHPExcel_Calculation_Functions::NaN();

-		}

-		return hexdec($x);

-	}	//	function HEXTODEC()

-

-

-	/**

-	 * HEXTOOCT

-	 *

-	 * Return a hex value as octal.

-	 *

-	 * Excel Function:

-	 *		HEX2OCT(x[,places])

-	 *

-	 * @access	public

-	 * @category Engineering Functions

-	 * @param	string		$x			The hexadecimal number you want to convert. Number cannot

-	 *									contain more than 10 characters. The most significant bit of

-	 *									number is the sign bit. The remaining 39 bits are magnitude

-	 *									bits. Negative numbers are represented using two's-complement

-	 *									notation.

-	 *									If number is negative, HEX2OCT ignores places and returns a

-	 *									10-character octal number.

-	 *									If number is negative, it cannot be less than FFE0000000, and

-	 *									if number is positive, it cannot be greater than 1FFFFFFF.

-	 *									If number is not a valid hexadecimal number, HEX2OCT returns

-	 *									the #NUM! error value.

-	 *									If HEX2OCT requires more than places characters, it returns

-	 *									the #NUM! error value.

-	 * @param	integer		$places		The number of characters to use. If places is omitted, HEX2OCT

-	 *									uses the minimum number of characters necessary. Places is

-	 *									useful for padding the return value with leading 0s (zeros).

-	 *									If places is not an integer, it is truncated.

-	 *									If places is nonnumeric, HEX2OCT returns the #VALUE! error

-	 *									value.

-	 *									If places is negative, HEX2OCT returns the #NUM! error value.

-	 * @return	string

-	 */

-	public static function HEXTOOCT($x, $places=null) {

-		$x	= PHPExcel_Calculation_Functions::flattenSingleValue($x);

-		$places	= PHPExcel_Calculation_Functions::flattenSingleValue($places);

-

-		if (is_bool($x)) {

-			return PHPExcel_Calculation_Functions::VALUE();

-		}

-		$x = (string) $x;

-		if (strlen($x) > preg_match_all('/[0123456789ABCDEF]/',strtoupper($x),$out)) {

-			return PHPExcel_Calculation_Functions::NaN();

-		}

-		$octVal = decoct(hexdec($x));

-

-		return self::_nbrConversionFormat($octVal,$places);

-	}	//	function HEXTOOCT()

-

-

-	/**

-	 * OCTTOBIN

-	 *

-	 * Return an octal value as binary.

-	 *

-	 * Excel Function:

-	 *		OCT2BIN(x[,places])

-	 *

-	 * @access	public

-	 * @category Engineering Functions

-	 * @param	string		$x			The octal number you want to convert. Number may not

-	 *									contain more than 10 characters. The most significant

-	 *									bit of number is the sign bit. The remaining 29 bits

-	 *									are magnitude bits. Negative numbers are represented

-	 *									using two's-complement notation.

-	 *									If number is negative, OCT2BIN ignores places and returns

-	 *									a 10-character binary number.

-	 *									If number is negative, it cannot be less than 7777777000,

-	 *									and if number is positive, it cannot be greater than 777.

-	 *									If number is not a valid octal number, OCT2BIN returns

-	 *									the #NUM! error value.

-	 *									If OCT2BIN requires more than places characters, it

-	 *									returns the #NUM! error value.

-	 * @param	integer		$places		The number of characters to use. If places is omitted,

-	 *									OCT2BIN uses the minimum number of characters necessary.

-	 *									Places is useful for padding the return value with

-	 *									leading 0s (zeros).

-	 *									If places is not an integer, it is truncated.

-	 *									If places is nonnumeric, OCT2BIN returns the #VALUE!

-	 *									error value.

-	 *									If places is negative, OCT2BIN returns the #NUM! error

-	 *									value.

-	 * @return	string

-	 */

-	public static function OCTTOBIN($x, $places=null) {

-		$x	= PHPExcel_Calculation_Functions::flattenSingleValue($x);

-		$places	= PHPExcel_Calculation_Functions::flattenSingleValue($places);

-

-		if (is_bool($x)) {

-			return PHPExcel_Calculation_Functions::VALUE();

-		}

-		$x = (string) $x;

-		if (preg_match_all('/[01234567]/',$x,$out) != strlen($x)) {

-			return PHPExcel_Calculation_Functions::NaN();

-		}

-		$r = decbin(octdec($x));

-

-		return self::_nbrConversionFormat($r,$places);

-	}	//	function OCTTOBIN()

-

-

-	/**

-	 * OCTTODEC

-	 *

-	 * Return an octal value as decimal.

-	 *

-	 * Excel Function:

-	 *		OCT2DEC(x)

-	 *

-	 * @access	public

-	 * @category Engineering Functions

-	 * @param	string		$x		The octal number you want to convert. Number may not contain

-	 *								more than 10 octal characters (30 bits). The most significant

-	 *								bit of number is the sign bit. The remaining 29 bits are

-	 *								magnitude bits. Negative numbers are represented using

-	 *								two's-complement notation.

-	 *								If number is not a valid octal number, OCT2DEC returns the

-	 *								#NUM! error value.

-	 * @return	string

-	 */

-	public static function OCTTODEC($x) {

-		$x	= PHPExcel_Calculation_Functions::flattenSingleValue($x);

-

-		if (is_bool($x)) {

-			return PHPExcel_Calculation_Functions::VALUE();

-		}

-		$x = (string) $x;

-		if (preg_match_all('/[01234567]/',$x,$out) != strlen($x)) {

-			return PHPExcel_Calculation_Functions::NaN();

-		}

-		return octdec($x);

-	}	//	function OCTTODEC()

-

-

-	/**

-	 * OCTTOHEX

-	 *

-	 * Return an octal value as hex.

-	 *

-	 * Excel Function:

-	 *		OCT2HEX(x[,places])

-	 *

-	 * @access	public

-	 * @category Engineering Functions

-	 * @param	string		$x			The octal number you want to convert. Number may not contain

-	 *									more than 10 octal characters (30 bits). The most significant

-	 *									bit of number is the sign bit. The remaining 29 bits are

-	 *									magnitude bits. Negative numbers are represented using

-	 *									two's-complement notation.

-	 *									If number is negative, OCT2HEX ignores places and returns a

-	 *									10-character hexadecimal number.

-	 *									If number is not a valid octal number, OCT2HEX returns the

-	 *									#NUM! error value.

-	 *									If OCT2HEX requires more than places characters, it returns

-	 *									the #NUM! error value.

-	 * @param	integer		$places		The number of characters to use. If places is omitted, OCT2HEX

-	 *									uses the minimum number of characters necessary. Places is useful

-	 *									for padding the return value with leading 0s (zeros).

-	 *									If places is not an integer, it is truncated.

-	 *									If places is nonnumeric, OCT2HEX returns the #VALUE! error value.

-	 *									If places is negative, OCT2HEX returns the #NUM! error value.

-	 * @return	string

-	 */

-	public static function OCTTOHEX($x, $places=null) {

-		$x	= PHPExcel_Calculation_Functions::flattenSingleValue($x);

-		$places	= PHPExcel_Calculation_Functions::flattenSingleValue($places);

-

-		if (is_bool($x)) {

-			return PHPExcel_Calculation_Functions::VALUE();

-		}

-		$x = (string) $x;

-		if (preg_match_all('/[01234567]/',$x,$out) != strlen($x)) {

-			return PHPExcel_Calculation_Functions::NaN();

-		}

-		$hexVal = strtoupper(dechex(octdec($x)));

-

-		return self::_nbrConversionFormat($hexVal,$places);

-	}	//	function OCTTOHEX()

-

-

-	/**

-	 * COMPLEX

-	 *

-	 * Converts real and imaginary coefficients into a complex number of the form x + yi or x + yj.

-	 *

-	 * Excel Function:

-	 *		COMPLEX(realNumber,imaginary[,places])

-	 *

-	 * @access	public

-	 * @category Engineering Functions

-	 * @param	float		$realNumber		The real coefficient of the complex number.

-	 * @param	float		$imaginary		The imaginary coefficient of the complex number.

-	 * @param	string		$suffix			The suffix for the imaginary component of the complex number.

-	 *										If omitted, the suffix is assumed to be "i".

-	 * @return	string

-	 */

-	public static function COMPLEX($realNumber=0.0, $imaginary=0.0, $suffix='i') {

-		$realNumber	= (is_null($realNumber))	? 0.0 :	PHPExcel_Calculation_Functions::flattenSingleValue($realNumber);

-		$imaginary	= (is_null($imaginary))		? 0.0 :	PHPExcel_Calculation_Functions::flattenSingleValue($imaginary);

-		$suffix		= (is_null($suffix))		? 'i' :	PHPExcel_Calculation_Functions::flattenSingleValue($suffix);

-

-		if (((is_numeric($realNumber)) && (is_numeric($imaginary))) &&

-			(($suffix == 'i') || ($suffix == 'j') || ($suffix == ''))) {

-			$realNumber	= (float) $realNumber;

-			$imaginary	= (float) $imaginary;

-

-			if ($suffix == '') $suffix = 'i';

-			if ($realNumber == 0.0) {

-				if ($imaginary == 0.0) {

-					return (string) '0';

-				} elseif ($imaginary == 1.0) {

-					return (string) $suffix;

-				} elseif ($imaginary == -1.0) {

-					return (string) '-'.$suffix;

-				}

-				return (string) $imaginary.$suffix;

-			} elseif ($imaginary == 0.0) {

-				return (string) $realNumber;

-			} elseif ($imaginary == 1.0) {

-				return (string) $realNumber.'+'.$suffix;

-			} elseif ($imaginary == -1.0) {

-				return (string) $realNumber.'-'.$suffix;

-			}

-			if ($imaginary > 0) { $imaginary = (string) '+'.$imaginary; }

-			return (string) $realNumber.$imaginary.$suffix;

-		}

-

-		return PHPExcel_Calculation_Functions::VALUE();

-	}	//	function COMPLEX()

-

-

-	/**

-	 * IMAGINARY

-	 *

-	 * Returns the imaginary coefficient of a complex number in x + yi or x + yj text format.

-	 *

-	 * Excel Function:

-	 *		IMAGINARY(complexNumber)

-	 *

-	 * @access	public

-	 * @category Engineering Functions

-	 * @param	string		$complexNumber	The complex number for which you want the imaginary

-	 * 										coefficient.

-	 * @return	float

-	 */

-	public static function IMAGINARY($complexNumber) {

-		$complexNumber	= PHPExcel_Calculation_Functions::flattenSingleValue($complexNumber);

-

-		$parsedComplex = self::_parseComplex($complexNumber);

-		return $parsedComplex['imaginary'];

-	}	//	function IMAGINARY()

-

-

-	/**

-	 * IMREAL

-	 *

-	 * Returns the real coefficient of a complex number in x + yi or x + yj text format.

-	 *

-	 * Excel Function:

-	 *		IMREAL(complexNumber)

-	 *

-	 * @access	public

-	 * @category Engineering Functions

-	 * @param	string		$complexNumber	The complex number for which you want the real coefficient.

-	 * @return	float

-	 */

-	public static function IMREAL($complexNumber) {

-		$complexNumber	= PHPExcel_Calculation_Functions::flattenSingleValue($complexNumber);

-

-		$parsedComplex = self::_parseComplex($complexNumber);

-		return $parsedComplex['real'];

-	}	//	function IMREAL()

-

-

-	/**

-	 * IMABS

-	 *

-	 * Returns the absolute value (modulus) of a complex number in x + yi or x + yj text format.

-	 *

-	 * Excel Function:

-	 *		IMABS(complexNumber)

-	 *

-	 * @param	string		$complexNumber	The complex number for which you want the absolute value.

-	 * @return	float

-	 */

-	public static function IMABS($complexNumber) {

-		$complexNumber	= PHPExcel_Calculation_Functions::flattenSingleValue($complexNumber);

-

-		$parsedComplex = self::_parseComplex($complexNumber);

-

-		return sqrt(($parsedComplex['real'] * $parsedComplex['real']) + ($parsedComplex['imaginary'] * $parsedComplex['imaginary']));

-	}	//	function IMABS()

-

-

-	/**

-	 * IMARGUMENT

-	 *

-	 * Returns the argument theta of a complex number, i.e. the angle in radians from the real

-	 * axis to the representation of the number in polar coordinates.

-	 *

-	 * Excel Function:

-	 *		IMARGUMENT(complexNumber)

-	 *

-	 * @param	string		$complexNumber	The complex number for which you want the argument theta.

-	 * @return	float

-	 */

-	public static function IMARGUMENT($complexNumber) {

-		$complexNumber	= PHPExcel_Calculation_Functions::flattenSingleValue($complexNumber);

-

-		$parsedComplex = self::_parseComplex($complexNumber);

-

-		if ($parsedComplex['real'] == 0.0) {

-			if ($parsedComplex['imaginary'] == 0.0) {

-				return 0.0;

-			} elseif($parsedComplex['imaginary'] < 0.0) {

-				return M_PI / -2;

-			} else {

-				return M_PI / 2;

-			}

-		} elseif ($parsedComplex['real'] > 0.0) {

-			return atan($parsedComplex['imaginary'] / $parsedComplex['real']);

-		} elseif ($parsedComplex['imaginary'] < 0.0) {

-			return 0 - (M_PI - atan(abs($parsedComplex['imaginary']) / abs($parsedComplex['real'])));

-		} else {

-			return M_PI - atan($parsedComplex['imaginary'] / abs($parsedComplex['real']));

-		}

-	}	//	function IMARGUMENT()

-

-

-	/**

-	 * IMCONJUGATE

-	 *

-	 * Returns the complex conjugate of a complex number in x + yi or x + yj text format.

-	 *

-	 * Excel Function:

-	 *		IMCONJUGATE(complexNumber)

-	 *

-	 * @param	string		$complexNumber	The complex number for which you want the conjugate.

-	 * @return	string

-	 */

-	public static function IMCONJUGATE($complexNumber) {

-		$complexNumber	= PHPExcel_Calculation_Functions::flattenSingleValue($complexNumber);

-

-		$parsedComplex = self::_parseComplex($complexNumber);

-

-		if ($parsedComplex['imaginary'] == 0.0) {

-			return $parsedComplex['real'];

-		} else {

-			return self::_cleanComplex( self::COMPLEX( $parsedComplex['real'],

-													   0 - $parsedComplex['imaginary'],

-													   $parsedComplex['suffix']

-													 )

-									  );

-		}

-	}	//	function IMCONJUGATE()

-

-

-	/**

-	 * IMCOS

-	 *

-	 * Returns the cosine of a complex number in x + yi or x + yj text format.

-	 *

-	 * Excel Function:

-	 *		IMCOS(complexNumber)

-	 *

-	 * @param	string		$complexNumber	The complex number for which you want the cosine.

-	 * @return	string|float

-	 */

-	public static function IMCOS($complexNumber) {

-		$complexNumber	= PHPExcel_Calculation_Functions::flattenSingleValue($complexNumber);

-

-		$parsedComplex = self::_parseComplex($complexNumber);

-

-		if ($parsedComplex['imaginary'] == 0.0) {

-			return cos($parsedComplex['real']);

-		} else {

-			return self::IMCONJUGATE(self::COMPLEX(cos($parsedComplex['real']) * cosh($parsedComplex['imaginary']),sin($parsedComplex['real']) * sinh($parsedComplex['imaginary']),$parsedComplex['suffix']));

-		}

-	}	//	function IMCOS()

-

-

-	/**

-	 * IMSIN

-	 *

-	 * Returns the sine of a complex number in x + yi or x + yj text format.

-	 *

-	 * Excel Function:

-	 *		IMSIN(complexNumber)

-	 *

-	 * @param	string		$complexNumber	The complex number for which you want the sine.

-	 * @return	string|float

-	 */

-	public static function IMSIN($complexNumber) {

-		$complexNumber	= PHPExcel_Calculation_Functions::flattenSingleValue($complexNumber);

-

-		$parsedComplex = self::_parseComplex($complexNumber);

-

-		if ($parsedComplex['imaginary'] == 0.0) {

-			return sin($parsedComplex['real']);

-		} else {

-			return self::COMPLEX(sin($parsedComplex['real']) * cosh($parsedComplex['imaginary']),cos($parsedComplex['real']) * sinh($parsedComplex['imaginary']),$parsedComplex['suffix']);

-		}

-	}	//	function IMSIN()

-

-

-	/**

-	 * IMSQRT

-	 *

-	 * Returns the square root of a complex number in x + yi or x + yj text format.

-	 *

-	 * Excel Function:

-	 *		IMSQRT(complexNumber)

-	 *

-	 * @param	string		$complexNumber	The complex number for which you want the square root.

-	 * @return	string

-	 */

-	public static function IMSQRT($complexNumber) {

-		$complexNumber	= PHPExcel_Calculation_Functions::flattenSingleValue($complexNumber);

-

-		$parsedComplex = self::_parseComplex($complexNumber);

-

-		$theta = self::IMARGUMENT($complexNumber);

-		$d1 = cos($theta / 2);

-		$d2 = sin($theta / 2);

-		$r = sqrt(sqrt(($parsedComplex['real'] * $parsedComplex['real']) + ($parsedComplex['imaginary'] * $parsedComplex['imaginary'])));

-

-		if ($parsedComplex['suffix'] == '') {

-			return self::COMPLEX($d1 * $r,$d2 * $r);

-		} else {

-			return self::COMPLEX($d1 * $r,$d2 * $r,$parsedComplex['suffix']);

-		}

-	}	//	function IMSQRT()

-

-

-	/**

-	 * IMLN

-	 *

-	 * Returns the natural logarithm of a complex number in x + yi or x + yj text format.

-	 *

-	 * Excel Function:

-	 *		IMLN(complexNumber)

-	 *

-	 * @param	string		$complexNumber	The complex number for which you want the natural logarithm.

-	 * @return	string

-	 */

-	public static function IMLN($complexNumber) {

-		$complexNumber	= PHPExcel_Calculation_Functions::flattenSingleValue($complexNumber);

-

-		$parsedComplex = self::_parseComplex($complexNumber);

-

-		if (($parsedComplex['real'] == 0.0) && ($parsedComplex['imaginary'] == 0.0)) {

-			return PHPExcel_Calculation_Functions::NaN();

-		}

-

-		$logR = log(sqrt(($parsedComplex['real'] * $parsedComplex['real']) + ($parsedComplex['imaginary'] * $parsedComplex['imaginary'])));

-		$t = self::IMARGUMENT($complexNumber);

-

-		if ($parsedComplex['suffix'] == '') {

-			return self::COMPLEX($logR,$t);

-		} else {

-			return self::COMPLEX($logR,$t,$parsedComplex['suffix']);

-		}

-	}	//	function IMLN()

-

-

-	/**

-	 * IMLOG10

-	 *

-	 * Returns the common logarithm (base 10) of a complex number in x + yi or x + yj text format.

-	 *

-	 * Excel Function:

-	 *		IMLOG10(complexNumber)

-	 *

-	 * @param	string		$complexNumber	The complex number for which you want the common logarithm.

-	 * @return	string

-	 */

-	public static function IMLOG10($complexNumber) {

-		$complexNumber	= PHPExcel_Calculation_Functions::flattenSingleValue($complexNumber);

-

-		$parsedComplex = self::_parseComplex($complexNumber);

-

-		if (($parsedComplex['real'] == 0.0) && ($parsedComplex['imaginary'] == 0.0)) {

-			return PHPExcel_Calculation_Functions::NaN();

-		} elseif (($parsedComplex['real'] > 0.0) && ($parsedComplex['imaginary'] == 0.0)) {

-			return log10($parsedComplex['real']);

-		}

-

-		return self::IMPRODUCT(log10(EULER),self::IMLN($complexNumber));

-	}	//	function IMLOG10()

-

-

-	/**

-	 * IMLOG2

-	 *

-	 * Returns the common logarithm (base 10) of a complex number in x + yi or x + yj text format.

-	 *

-	 * Excel Function:

-	 *		IMLOG2(complexNumber)

-	 *

-	 * @param	string		$complexNumber	The complex number for which you want the base-2 logarithm.

-	 * @return	string

-	 */

-	public static function IMLOG2($complexNumber) {

-		$complexNumber	= PHPExcel_Calculation_Functions::flattenSingleValue($complexNumber);

-

-		$parsedComplex = self::_parseComplex($complexNumber);

-

-		if (($parsedComplex['real'] == 0.0) && ($parsedComplex['imaginary'] == 0.0)) {

-			return PHPExcel_Calculation_Functions::NaN();

-		} elseif (($parsedComplex['real'] > 0.0) && ($parsedComplex['imaginary'] == 0.0)) {

-			return log($parsedComplex['real'],2);

-		}

-

-		return self::IMPRODUCT(log(EULER,2),self::IMLN($complexNumber));

-	}	//	function IMLOG2()

-

-

-	/**

-	 * IMEXP

-	 *

-	 * Returns the exponential of a complex number in x + yi or x + yj text format.

-	 *

-	 * Excel Function:

-	 *		IMEXP(complexNumber)

-	 *

-	 * @param	string		$complexNumber	The complex number for which you want the exponential.

-	 * @return	string

-	 */

-	public static function IMEXP($complexNumber) {

-		$complexNumber	= PHPExcel_Calculation_Functions::flattenSingleValue($complexNumber);

-

-		$parsedComplex = self::_parseComplex($complexNumber);

-

-		if (($parsedComplex['real'] == 0.0) && ($parsedComplex['imaginary'] == 0.0)) {

-			return '1';

-		}

-

-		$e = exp($parsedComplex['real']);

-		$eX = $e * cos($parsedComplex['imaginary']);

-		$eY = $e * sin($parsedComplex['imaginary']);

-

-		if ($parsedComplex['suffix'] == '') {

-			return self::COMPLEX($eX,$eY);

-		} else {

-			return self::COMPLEX($eX,$eY,$parsedComplex['suffix']);

-		}

-	}	//	function IMEXP()

-

-

-	/**

-	 * IMPOWER

-	 *

-	 * Returns a complex number in x + yi or x + yj text format raised to a power.

-	 *

-	 * Excel Function:

-	 *		IMPOWER(complexNumber,realNumber)

-	 *

-	 * @param	string		$complexNumber	The complex number you want to raise to a power.

-	 * @param	float		$realNumber		The power to which you want to raise the complex number.

-	 * @return	string

-	 */

-	public static function IMPOWER($complexNumber,$realNumber) {

-		$complexNumber	= PHPExcel_Calculation_Functions::flattenSingleValue($complexNumber);

-		$realNumber		= PHPExcel_Calculation_Functions::flattenSingleValue($realNumber);

-

-		if (!is_numeric($realNumber)) {

-			return PHPExcel_Calculation_Functions::VALUE();

-		}

-

-		$parsedComplex = self::_parseComplex($complexNumber);

-

-		$r = sqrt(($parsedComplex['real'] * $parsedComplex['real']) + ($parsedComplex['imaginary'] * $parsedComplex['imaginary']));

-		$rPower = pow($r,$realNumber);

-		$theta = self::IMARGUMENT($complexNumber) * $realNumber;

-		if ($theta == 0) {

-			return 1;

-		} elseif ($parsedComplex['imaginary'] == 0.0) {

-			return self::COMPLEX($rPower * cos($theta),$rPower * sin($theta),$parsedComplex['suffix']);

-		} else {

-			return self::COMPLEX($rPower * cos($theta),$rPower * sin($theta),$parsedComplex['suffix']);

-		}

-	}	//	function IMPOWER()

-

-

-	/**

-	 * IMDIV

-	 *

-	 * Returns the quotient of two complex numbers in x + yi or x + yj text format.

-	 *

-	 * Excel Function:

-	 *		IMDIV(complexDividend,complexDivisor)

-	 *

-	 * @param	string		$complexDividend	The complex numerator or dividend.

-	 * @param	string		$complexDivisor		The complex denominator or divisor.

-	 * @return	string

-	 */

-	public static function IMDIV($complexDividend,$complexDivisor) {

-		$complexDividend	= PHPExcel_Calculation_Functions::flattenSingleValue($complexDividend);

-		$complexDivisor	= PHPExcel_Calculation_Functions::flattenSingleValue($complexDivisor);

-

-		$parsedComplexDividend = self::_parseComplex($complexDividend);

-		$parsedComplexDivisor = self::_parseComplex($complexDivisor);

-

-		if (($parsedComplexDividend['suffix'] != '') && ($parsedComplexDivisor['suffix'] != '') &&

-			($parsedComplexDividend['suffix'] != $parsedComplexDivisor['suffix'])) {

-			return PHPExcel_Calculation_Functions::NaN();

-		}

-		if (($parsedComplexDividend['suffix'] != '') && ($parsedComplexDivisor['suffix'] == '')) {

-			$parsedComplexDivisor['suffix'] = $parsedComplexDividend['suffix'];

-		}

-

-		$d1 = ($parsedComplexDividend['real'] * $parsedComplexDivisor['real']) + ($parsedComplexDividend['imaginary'] * $parsedComplexDivisor['imaginary']);

-		$d2 = ($parsedComplexDividend['imaginary'] * $parsedComplexDivisor['real']) - ($parsedComplexDividend['real'] * $parsedComplexDivisor['imaginary']);

-		$d3 = ($parsedComplexDivisor['real'] * $parsedComplexDivisor['real']) + ($parsedComplexDivisor['imaginary'] * $parsedComplexDivisor['imaginary']);

-

-		$r = $d1/$d3;

-		$i = $d2/$d3;

-

-		if ($i > 0.0) {

-			return self::_cleanComplex($r.'+'.$i.$parsedComplexDivisor['suffix']);

-		} elseif ($i < 0.0) {

-			return self::_cleanComplex($r.$i.$parsedComplexDivisor['suffix']);

-		} else {

-			return $r;

-		}

-	}	//	function IMDIV()

-

-

-	/**

-	 * IMSUB

-	 *

-	 * Returns the difference of two complex numbers in x + yi or x + yj text format.

-	 *

-	 * Excel Function:

-	 *		IMSUB(complexNumber1,complexNumber2)

-	 *

-	 * @param	string		$complexNumber1		The complex number from which to subtract complexNumber2.

-	 * @param	string		$complexNumber2		The complex number to subtract from complexNumber1.

-	 * @return	string

-	 */

-	public static function IMSUB($complexNumber1,$complexNumber2) {

-		$complexNumber1	= PHPExcel_Calculation_Functions::flattenSingleValue($complexNumber1);

-		$complexNumber2	= PHPExcel_Calculation_Functions::flattenSingleValue($complexNumber2);

-

-		$parsedComplex1 = self::_parseComplex($complexNumber1);

-		$parsedComplex2 = self::_parseComplex($complexNumber2);

-

-		if ((($parsedComplex1['suffix'] != '') && ($parsedComplex2['suffix'] != '')) &&

-			($parsedComplex1['suffix'] != $parsedComplex2['suffix'])) {

-			return PHPExcel_Calculation_Functions::NaN();

-		} elseif (($parsedComplex1['suffix'] == '') && ($parsedComplex2['suffix'] != '')) {

-			$parsedComplex1['suffix'] = $parsedComplex2['suffix'];

-		}

-

-		$d1 = $parsedComplex1['real'] - $parsedComplex2['real'];

-		$d2 = $parsedComplex1['imaginary'] - $parsedComplex2['imaginary'];

-

-		return self::COMPLEX($d1,$d2,$parsedComplex1['suffix']);

-	}	//	function IMSUB()

-

-

-	/**

-	 * IMSUM

-	 *

-	 * Returns the sum of two or more complex numbers in x + yi or x + yj text format.

-	 *

-	 * Excel Function:

-	 *		IMSUM(complexNumber[,complexNumber[,...]])

-	 *

-	 * @param	string		$complexNumber,...	Series of complex numbers to add

-	 * @return	string

-	 */

-	public static function IMSUM() {

-		// Return value

-		$returnValue = self::_parseComplex('0');

-		$activeSuffix = '';

-

-		// Loop through the arguments

-		$aArgs = PHPExcel_Calculation_Functions::flattenArray(func_get_args());

-		foreach ($aArgs as $arg) {

-			$parsedComplex = self::_parseComplex($arg);

-

-			if ($activeSuffix == '') {

-				$activeSuffix = $parsedComplex['suffix'];

-			} elseif (($parsedComplex['suffix'] != '') && ($activeSuffix != $parsedComplex['suffix'])) {

-				return PHPExcel_Calculation_Functions::VALUE();

-			}

-

-			$returnValue['real'] += $parsedComplex['real'];

-			$returnValue['imaginary'] += $parsedComplex['imaginary'];

-		}

-

-		if ($returnValue['imaginary'] == 0.0) { $activeSuffix = ''; }

-		return self::COMPLEX($returnValue['real'],$returnValue['imaginary'],$activeSuffix);

-	}	//	function IMSUM()

-

-

-	/**

-	 * IMPRODUCT

-	 *

-	 * Returns the product of two or more complex numbers in x + yi or x + yj text format.

-	 *

-	 * Excel Function:

-	 *		IMPRODUCT(complexNumber[,complexNumber[,...]])

-	 *

-	 * @param	string		$complexNumber,...	Series of complex numbers to multiply

-	 * @return	string

-	 */

-	public static function IMPRODUCT() {

-		// Return value

-		$returnValue = self::_parseComplex('1');

-		$activeSuffix = '';

-

-		// Loop through the arguments

-		$aArgs = PHPExcel_Calculation_Functions::flattenArray(func_get_args());

-		foreach ($aArgs as $arg) {

-			$parsedComplex = self::_parseComplex($arg);

-

-			$workValue = $returnValue;

-			if (($parsedComplex['suffix'] != '') && ($activeSuffix == '')) {

-				$activeSuffix = $parsedComplex['suffix'];

-			} elseif (($parsedComplex['suffix'] != '') && ($activeSuffix != $parsedComplex['suffix'])) {

-				return PHPExcel_Calculation_Functions::NaN();

-			}

-			$returnValue['real'] = ($workValue['real'] * $parsedComplex['real']) - ($workValue['imaginary'] * $parsedComplex['imaginary']);

-			$returnValue['imaginary'] = ($workValue['real'] * $parsedComplex['imaginary']) + ($workValue['imaginary'] * $parsedComplex['real']);

-		}

-

-		if ($returnValue['imaginary'] == 0.0) { $activeSuffix = ''; }

-		return self::COMPLEX($returnValue['real'],$returnValue['imaginary'],$activeSuffix);

-	}	//	function IMPRODUCT()

-

-

-	/**

-	 *	DELTA

-	 *

-	 *	Tests whether two values are equal. Returns 1 if number1 = number2; returns 0 otherwise.

-	 *	Use this function to filter a set of values. For example, by summing several DELTA

-	 *	functions you calculate the count of equal pairs. This function is also known as the

-	 *	Kronecker Delta function.

-	 *

-	 *	Excel Function:

-	 *		DELTA(a[,b])

-	 *

-	 *	@param	float		$a	The first number.

-	 *	@param	float		$b	The second number. If omitted, b is assumed to be zero.

-	 *	@return	int

-	 */

-	public static function DELTA($a, $b=0) {

-		$a	= PHPExcel_Calculation_Functions::flattenSingleValue($a);

-		$b	= PHPExcel_Calculation_Functions::flattenSingleValue($b);

-

-		return (int) ($a == $b);

-	}	//	function DELTA()

-

-

-	/**

-	 *	GESTEP

-	 *

-	 *	Excel Function:

-	 *		GESTEP(number[,step])

-	 *

-	 *	Returns 1 if number >= step; returns 0 (zero) otherwise

-	 *	Use this function to filter a set of values. For example, by summing several GESTEP

-	 *	functions you calculate the count of values that exceed a threshold.

-	 *

-	 *	@param	float		$number		The value to test against step.

-	 *	@param	float		$step		The threshold value.

-	 *									If you omit a value for step, GESTEP uses zero.

-	 *	@return	int

-	 */

-	public static function GESTEP($number, $step=0) {

-		$number	= PHPExcel_Calculation_Functions::flattenSingleValue($number);

-		$step	= PHPExcel_Calculation_Functions::flattenSingleValue($step);

-

-		return (int) ($number >= $step);

-	}	//	function GESTEP()

-

-

-	//

-	//	Private method to calculate the erf value

-	//

-	private static $_two_sqrtpi = 1.128379167095512574;

-

-	public static function _erfVal($x) {

-		if (abs($x) > 2.2) {

-			return 1 - self::_erfcVal($x);

-		}

-		$sum = $term = $x;

-		$xsqr = ($x * $x);

-		$j = 1;

-		do {

-			$term *= $xsqr / $j;

-			$sum -= $term / (2 * $j + 1);

-			++$j;

-			$term *= $xsqr / $j;

-			$sum += $term / (2 * $j + 1);

-			++$j;

-			if ($sum == 0.0) {

-				break;

-			}

-		} while (abs($term / $sum) > PRECISION);

-		return self::$_two_sqrtpi * $sum;

-	}	//	function _erfVal()

-

-

-	/**

-	 *	ERF

-	 *

-	 *	Returns the error function integrated between the lower and upper bound arguments.

-	 *

-	 *	Note: In Excel 2007 or earlier, if you input a negative value for the upper or lower bound arguments,

-	 *			the function would return a #NUM! error. However, in Excel 2010, the function algorithm was

-	 *			improved, so that it can now calculate the function for both positive and negative ranges.

-	 *			PHPExcel follows Excel 2010 behaviour, and accepts nagative arguments.

-	 *

-	 *	Excel Function:

-	 *		ERF(lower[,upper])

-	 *

-	 *	@param	float		$lower	lower bound for integrating ERF

-	 *	@param	float		$upper	upper bound for integrating ERF.

-	 *								If omitted, ERF integrates between zero and lower_limit

-	 *	@return	float

-	 */

-	public static function ERF($lower, $upper = NULL) {

-		$lower	= PHPExcel_Calculation_Functions::flattenSingleValue($lower);

-		$upper	= PHPExcel_Calculation_Functions::flattenSingleValue($upper);

-

-		if (is_numeric($lower)) {

-			if (is_null($upper)) {

-				return self::_erfVal($lower);

-			}

-			if (is_numeric($upper)) {

-				return self::_erfVal($upper) - self::_erfVal($lower);

-			}

-		}

-		return PHPExcel_Calculation_Functions::VALUE();

-	}	//	function ERF()

-

-

-	//

-	//	Private method to calculate the erfc value

-	//

-	private static $_one_sqrtpi = 0.564189583547756287;

-

-	private static function _erfcVal($x) {

-		if (abs($x) < 2.2) {

-			return 1 - self::_erfVal($x);

-		}

-		if ($x < 0) {

-			return 2 - self::ERFC(-$x);

-		}

-		$a = $n = 1;

-		$b = $c = $x;

-		$d = ($x * $x) + 0.5;

-		$q1 = $q2 = $b / $d;

-		$t = 0;

-		do {

-			$t = $a * $n + $b * $x;

-			$a = $b;

-			$b = $t;

-			$t = $c * $n + $d * $x;

-			$c = $d;

-			$d = $t;

-			$n += 0.5;

-			$q1 = $q2;

-			$q2 = $b / $d;

-		} while ((abs($q1 - $q2) / $q2) > PRECISION);

-		return self::$_one_sqrtpi * exp(-$x * $x) * $q2;

-	}	//	function _erfcVal()

-

-

-	/**

-	 *	ERFC

-	 *

-	 *	Returns the complementary ERF function integrated between x and infinity

-	 *

-	 *	Note: In Excel 2007 or earlier, if you input a negative value for the lower bound argument,

-	 *		the function would return a #NUM! error. However, in Excel 2010, the function algorithm was

-	 *		improved, so that it can now calculate the function for both positive and negative x values.

-	 *			PHPExcel follows Excel 2010 behaviour, and accepts nagative arguments.

-	 *

-	 *	Excel Function:

-	 *		ERFC(x)

-	 *

-	 *	@param	float	$x	The lower bound for integrating ERFC

-	 *	@return	float

-	 */

-	public static function ERFC($x) {

-		$x = PHPExcel_Calculation_Functions::flattenSingleValue($x);

-

-		if (is_numeric($x)) {

-			return self::_erfcVal($x);

-		}

-		return PHPExcel_Calculation_Functions::VALUE();

-	}	//	function ERFC()

-

-

-	/**

-	 *	getConversionGroups

-	 *	Returns a list of the different conversion groups for UOM conversions

-	 *

-	 *	@return	array

-	 */

-	public static function getConversionGroups() {

-		$conversionGroups = array();

-		foreach(self::$_conversionUnits as $conversionUnit) {

-			$conversionGroups[] = $conversionUnit['Group'];

-		}

-		return array_merge(array_unique($conversionGroups));

-	}	//	function getConversionGroups()

-

-

-	/**

-	 *	getConversionGroupUnits

-	 *	Returns an array of units of measure, for a specified conversion group, or for all groups

-	 *

-	 *	@param	string	$group	The group whose units of measure you want to retrieve

-	 *

-	 *	@return	array

-	 */

-	public static function getConversionGroupUnits($group = NULL) {

-		$conversionGroups = array();

-		foreach(self::$_conversionUnits as $conversionUnit => $conversionGroup) {

-			if ((is_null($group)) || ($conversionGroup['Group'] == $group)) {

-				$conversionGroups[$conversionGroup['Group']][] = $conversionUnit;

-			}

-		}

-		return $conversionGroups;

-	}	//	function getConversionGroupUnits()

-

-

-	/**

-	 *	getConversionGroupUnitDetails

-	 *

-	 *	@return	array

-	 */

-	public static function getConversionGroupUnitDetails($group = NULL) {

-		$conversionGroups = array();

-		foreach(self::$_conversionUnits as $conversionUnit => $conversionGroup) {

-			if ((is_null($group)) || ($conversionGroup['Group'] == $group)) {

-				$conversionGroups[$conversionGroup['Group']][] = array(	'unit'			=> $conversionUnit,

-																		'description'	=> $conversionGroup['Unit Name']

-																	  );

-			}

-		}

-		return $conversionGroups;

-	}	//	function getConversionGroupUnitDetails()

-

-

-	/**

-	 *	getConversionMultipliers

-	 *	Returns an array of the Multiplier prefixes that can be used with Units of Measure in CONVERTUOM()

-	 *

-	 *	@return	array of mixed

-	 */

-	public static function getConversionMultipliers() {

-		return self::$_conversionMultipliers;

-	}	//	function getConversionGroups()

-

-

-	/**

-	 *	CONVERTUOM

-	 *

-	 *	Converts a number from one measurement system to another.

-	 *	For example, CONVERT can translate a table of distances in miles to a table of distances

-	 *	in kilometers.

-	 *

-	 *	Excel Function:

-	 *		CONVERT(value,fromUOM,toUOM)

-	 *

-	 *	@param	float		$value		The value in fromUOM to convert.

-	 *	@param	string		$fromUOM	The units for value.

-	 *	@param	string		$toUOM		The units for the result.

-	 *

-	 *	@return	float

-	 */

-	public static function CONVERTUOM($value, $fromUOM, $toUOM) {

-		$value		= PHPExcel_Calculation_Functions::flattenSingleValue($value);

-		$fromUOM	= PHPExcel_Calculation_Functions::flattenSingleValue($fromUOM);

-		$toUOM		= PHPExcel_Calculation_Functions::flattenSingleValue($toUOM);

-

-		if (!is_numeric($value)) {

-			return PHPExcel_Calculation_Functions::VALUE();

-		}

-		$fromMultiplier = 1.0;

-		if (isset(self::$_conversionUnits[$fromUOM])) {

-			$unitGroup1 = self::$_conversionUnits[$fromUOM]['Group'];

-		} else {

-			$fromMultiplier = substr($fromUOM,0,1);

-			$fromUOM = substr($fromUOM,1);

-			if (isset(self::$_conversionMultipliers[$fromMultiplier])) {

-				$fromMultiplier = self::$_conversionMultipliers[$fromMultiplier]['multiplier'];

-			} else {

-				return PHPExcel_Calculation_Functions::NA();

-			}

-			if ((isset(self::$_conversionUnits[$fromUOM])) && (self::$_conversionUnits[$fromUOM]['AllowPrefix'])) {

-				$unitGroup1 = self::$_conversionUnits[$fromUOM]['Group'];

-			} else {

-				return PHPExcel_Calculation_Functions::NA();

-			}

-		}

-		$value *= $fromMultiplier;

-

-		$toMultiplier = 1.0;

-		if (isset(self::$_conversionUnits[$toUOM])) {

-			$unitGroup2 = self::$_conversionUnits[$toUOM]['Group'];

-		} else {

-			$toMultiplier = substr($toUOM,0,1);

-			$toUOM = substr($toUOM,1);

-			if (isset(self::$_conversionMultipliers[$toMultiplier])) {

-				$toMultiplier = self::$_conversionMultipliers[$toMultiplier]['multiplier'];

-			} else {

-				return PHPExcel_Calculation_Functions::NA();

-			}

-			if ((isset(self::$_conversionUnits[$toUOM])) && (self::$_conversionUnits[$toUOM]['AllowPrefix'])) {

-				$unitGroup2 = self::$_conversionUnits[$toUOM]['Group'];

-			} else {

-				return PHPExcel_Calculation_Functions::NA();

-			}

-		}

-		if ($unitGroup1 != $unitGroup2) {

-			return PHPExcel_Calculation_Functions::NA();

-		}

-

-		if (($fromUOM == $toUOM) && ($fromMultiplier == $toMultiplier)) {

-			//	We've already factored $fromMultiplier into the value, so we need

-			//		to reverse it again

-			return $value / $fromMultiplier;

-		} elseif ($unitGroup1 == 'Temperature') {

-			if (($fromUOM == 'F') || ($fromUOM == 'fah')) {

-				if (($toUOM == 'F') || ($toUOM == 'fah')) {

-					return $value;

-				} else {

-					$value = (($value - 32) / 1.8);

-					if (($toUOM == 'K') || ($toUOM == 'kel')) {

-						$value += 273.15;

-					}

-					return $value;

-				}

-			} elseif ((($fromUOM == 'K') || ($fromUOM == 'kel')) &&

-					  (($toUOM == 'K') || ($toUOM == 'kel'))) {

-						return $value;

-			} elseif ((($fromUOM == 'C') || ($fromUOM == 'cel')) &&

-					  (($toUOM == 'C') || ($toUOM == 'cel'))) {

-					return $value;

-			}

-			if (($toUOM == 'F') || ($toUOM == 'fah')) {

-				if (($fromUOM == 'K') || ($fromUOM == 'kel')) {

-					$value -= 273.15;

-				}

-				return ($value * 1.8) + 32;

-			}

-			if (($toUOM == 'C') || ($toUOM == 'cel')) {

-				return $value - 273.15;

-			}

-			return $value + 273.15;

-		}

-		return ($value * self::$_unitConversions[$unitGroup1][$fromUOM][$toUOM]) / $toMultiplier;

-	}	//	function CONVERTUOM()

-

-}	//	class PHPExcel_Calculation_Engineering

diff --git a/admin/survey/excel/PHPExcel/Calculation/Exception.php b/admin/survey/excel/PHPExcel/Calculation/Exception.php
deleted file mode 100644
index 5247105..0000000
--- a/admin/survey/excel/PHPExcel/Calculation/Exception.php
+++ /dev/null
@@ -1,52 +0,0 @@
-<?php

-/**

- * PHPExcel

- *

- * Copyright (c) 2006 - 2012 PHPExcel

- *

- * This library is free software; you can redistribute it and/or

- * modify it under the terms of the GNU Lesser General Public

- * License as published by the Free Software Foundation; either

- * version 2.1 of the License, or (at your option) any later version.

- *

- * This library is distributed in the hope that it will be useful,

- * but WITHOUT ANY WARRANTY; without even the implied warranty of

- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

- * Lesser General Public License for more details.

- *

- * You should have received a copy of the GNU Lesser General Public

- * License along with this library; if not, write to the Free Software

- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA

- *

- * @category   PHPExcel

- * @package    PHPExcel_Calculation

- * @copyright  Copyright (c) 2006 - 2012 PHPExcel (http://www.codeplex.com/PHPExcel)

- * @license	http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL

- * @version	1.7.8, 2012-10-12

- */

-

-

-/**

- * PHPExcel_Calculation_Exception

- *

- * @category   PHPExcel

- * @package    PHPExcel_Calculation

- * @copyright  Copyright (c) 2006 - 2012 PHPExcel (http://www.codeplex.com/PHPExcel)

- */

-class PHPExcel_Calculation_Exception extends Exception {

-	/**

-	 * Error handler callback

-	 *

-	 * @param mixed $code

-	 * @param mixed $string

-	 * @param mixed $file

-	 * @param mixed $line

-	 * @param mixed $context

-	 */

-	public static function errorHandlerCallback($code, $string, $file, $line, $context) {

-		$e = new self($string, $code);

-		$e->line = $line;

-		$e->file = $file;

-		throw $e;

-	}

-}

diff --git a/admin/survey/excel/PHPExcel/Calculation/ExceptionHandler.php b/admin/survey/excel/PHPExcel/Calculation/ExceptionHandler.php
deleted file mode 100644
index 118cf7d..0000000
--- a/admin/survey/excel/PHPExcel/Calculation/ExceptionHandler.php
+++ /dev/null
@@ -1,49 +0,0 @@
-<?php

-/**

- * PHPExcel

- *

- * Copyright (c) 2006 - 2012 PHPExcel

- *

- * This library is free software; you can redistribute it and/or

- * modify it under the terms of the GNU Lesser General Public

- * License as published by the Free Software Foundation; either

- * version 2.1 of the License, or (at your option) any later version.

- *

- * This library is distributed in the hope that it will be useful,

- * but WITHOUT ANY WARRANTY; without even the implied warranty of

- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

- * Lesser General Public License for more details.

- *

- * You should have received a copy of the GNU Lesser General Public

- * License along with this library; if not, write to the Free Software

- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA

- *

- * @category   PHPExcel

- * @package    PHPExcel_Calculation

- * @copyright  Copyright (c) 2006 - 2012 PHPExcel (http://www.codeplex.com/PHPExcel)

- * @license	http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL

- * @version	1.7.8, 2012-10-12

- */

-

-/**

- * PHPExcel_Calculation_ExceptionHandler

- *

- * @category   PHPExcel

- * @package    PHPExcel_Calculation

- * @copyright  Copyright (c) 2006 - 2012 PHPExcel (http://www.codeplex.com/PHPExcel)

- */

-class PHPExcel_Calculation_ExceptionHandler {

-	/**

-	 * Register errorhandler

-	 */

-	public function __construct() {

-		set_error_handler(array('PHPExcel_Calculation_Exception', 'errorHandlerCallback'), E_ALL);

-	}

-

-	/**

-	 * Unregister errorhandler

-	 */

-	public function __destruct() {

-		restore_error_handler();

-	}

-}

diff --git a/admin/survey/excel/PHPExcel/Calculation/Financial.php b/admin/survey/excel/PHPExcel/Calculation/Financial.php
deleted file mode 100644
index a6f1e55..0000000
--- a/admin/survey/excel/PHPExcel/Calculation/Financial.php
+++ /dev/null
@@ -1,2248 +0,0 @@
-<?php

-/**

- * PHPExcel

- *

- * Copyright (c) 2006 - 2012 PHPExcel

- *

- * This library is free software; you can redistribute it and/or

- * modify it under the terms of the GNU Lesser General Public

- * License as published by the Free Software Foundation; either

- * version 2.1 of the License, or (at your option) any later version.

- *

- * This library is distributed in the hope that it will be useful,

- * but WITHOUT ANY WARRANTY; without even the implied warranty of

- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU

- * Lesser General Public License for more details.

- *

- * You should have received a copy of the GNU Lesser General Public

- * License along with this library; if not, write to the Free Software

- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA

- *

- * @category	PHPExcel

- * @package		PHPExcel_Calculation

- * @copyright	Copyright (c) 2006 - 2012 PHPExcel (http://www.codeplex.com/PHPExcel)

- * @license		http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL

- * @version		1.7.8, 2012-10-12

- */

-

-

-/** PHPExcel root directory */

-if (!defined('PHPEXCEL_ROOT')) {

-	/**

-	 * @ignore

-	 */

-	define('PHPEXCEL_ROOT', dirname(__FILE__) . '/../../');

-	require(PHPEXCEL_ROOT . 'PHPExcel/Autoloader.php');

-}

-

-

-/** FINANCIAL_MAX_ITERATIONS */

-define('FINANCIAL_MAX_ITERATIONS', 128);

-

-/** FINANCIAL_PRECISION */

-define('FINANCIAL_PRECISION', 1.0e-08);

-

-

-/**

- * PHPExcel_Calculation_Financial

- *

- * @category	PHPExcel

- * @package		PHPExcel_Calculation

- * @copyright	Copyright (c) 2006 - 2012 PHPExcel (http://www.codeplex.com/PHPExcel)

- */

-class PHPExcel_Calculation_Financial {

-

-	/**

-	 * _lastDayOfMonth

-	 *

-	 * Returns a boolean TRUE/FALSE indicating if this date is the last date of the month

-	 *

-	 * @param	DateTime	$testDate	The date for testing

-	 * @return	boolean

-	 */

-	private static function _lastDayOfMonth($testDate)

-	{

-		return ($testDate->format('d') == $testDate->format('t'));

-	}	//	function _lastDayOfMonth()

-

-

-	/**

-	 * _firstDayOfMonth

-	 *

-	 * Returns a boolean TRUE/FALSE indicating if this date is the first date of the month

-	 *

-	 * @param	DateTime	$testDate	The date for testing

-	 * @return	boolean

-	 */

-	private static function _firstDayOfMonth($testDate)

-	{

-		return ($testDate->format('d') == 1);

-	}	//	function _firstDayOfMonth()

-

-

-	private static function _coupFirstPeriodDate($settlement, $maturity, $frequency, $next)

-	{

-		$months = 12 / $frequency;

-

-		$result = PHPExcel_Shared_Date::ExcelToPHPObject($maturity);

-		$eom = self::_lastDayOfMonth($result);

-

-		while ($settlement < PHPExcel_Shared_Date::PHPToExcel($result)) {

-			$result->modify('-'.$months.' months');

-		}

-		if ($next) {

-			$result->modify('+'.$months.' months');

-		}

-

-		if ($eom) {

-			$result->modify('-1 day');

-		}

-

-		return PHPExcel_Shared_Date::PHPToExcel($result);

-	}	//	function _coupFirstPeriodDate()

-

-

-	private static function _validFrequency($frequency)

-	{

-		if (($frequency == 1) || ($frequency == 2) || ($frequency == 4)) {

-			return true;

-		}

-		if ((PHPExcel_Calculation_Functions::getCompatibilityMode() == PHPExcel_Calculation_Functions::COMPATIBILITY_GNUMERIC) &&

-			(($frequency == 6) || ($frequency == 12))) {

-			return true;

-		}

-		return false;

-	}	//	function _validFrequency()

-

-

-	/**

-	 * _daysPerYear

-	 *

-	 * Returns the number of days in a specified year, as defined by the "basis" value

-	 *

-	 * @param	integer		$year	The year against which we're testing

-	 * @param   integer		$basis	The type of day count:

-	 *									0 or omitted US (NASD)	360

-	 *									1						Actual (365 or 366 in a leap year)

-	 *									2						360

-	 *									3						365

-	 *									4						European 360

-	 * @return	integer

-	 */

-	private static function _daysPerYear($year, $basis=0)

-	{

-		switch ($basis) {

-			case 0 :

-			case 2 :

-			case 4 :

-				$daysPerYear = 360;

-				break;

-			case 3 :

-				$daysPerYear = 365;

-				break;

-			case 1 :

-				$daysPerYear = (PHPExcel_Calculation_DateTime::_isLeapYear($year)) ? 366 : 365;

-				break;

-			default	:

-				return PHPExcel_Calculation_Functions::NaN();

-		}

-		return $daysPerYear;

-	}	//	function _daysPerYear()

-

-

-	private static function _interestAndPrincipal($rate=0, $per=0, $nper=0, $pv=0, $fv=0, $type=0)

-	{

-		$pmt = self::PMT($rate, $nper, $pv, $fv, $type);

-		$capital = $pv;

-		for ($i = 1; $i<= $per; ++$i) {

-			$interest = ($type && $i == 1) ? 0 : -$capital * $rate;

-			$principal = $pmt - $interest;

-			$capital += $principal;

-		}

-		return array($interest, $principal);

-	}	//	function _interestAndPrincipal()

-

-

-	/**

-	 * ACCRINT

-	 *

-	 * Returns the accrued interest for a security that pays periodic interest.

-	 *

-	 * Excel Function:

-	 *		ACCRINT(issue,firstinterest,settlement,rate,par,frequency[,basis])

-	 *

-	 * @access	public

-	 * @category Financial Functions

-	 * @param	mixed	$issue			The security's issue date.

-	 * @param	mixed	$firstinterest	The security's first interest date.

-	 * @param	mixed	$settlement		The security's settlement date.

-	 *									The security settlement date is the date after the issue date

-	 *									when the security is traded to the buyer.

-	 * @param	float	$rate			The security's annual coupon rate.

-	 * @param	float	$par			The security's par value.

-	 *									If you omit par, ACCRINT uses $1,000.

-	 * @param	integer	$frequency		the number of coupon payments per year.

-	 *									Valid frequency values are:

-	 *										1	Annual

-	 *										2	Semi-Annual

-	 *										4	Quarterly

-	 *									If working in Gnumeric Mode, the following frequency options are

-	 *									also available

-	 *										6	Bimonthly

-	 *										12	Monthly

-	 * @param	integer	$basis			The type of day count to use.

-	 *										0 or omitted	US (NASD) 30/360

-	 *										1				Actual/actual

-	 *										2				Actual/360

-	 *										3				Actual/365

-	 *										4				European 30/360

-	 * @return	float

-	 */

-	public static function ACCRINT($issue, $firstinterest, $settlement, $rate, $par=1000, $frequency=1, $basis=0)

-	{

-		$issue		= PHPExcel_Calculation_Functions::flattenSingleValue($issue);

-		$firstinterest	= PHPExcel_Calculation_Functions::flattenSingleValue($firstinterest);

-		$settlement	= PHPExcel_Calculation_Functions::flattenSingleValue($settlement);

-		$rate		= PHPExcel_Calculation_Functions::flattenSingleValue($rate);

-		$par		= (is_null($par))		? 1000 :	PHPExcel_Calculation_Functions::flattenSingleValue($par);

-		$frequency	= (is_null($frequency))	? 1	: 		PHPExcel_Calculation_Functions::flattenSingleValue($frequency);

-		$basis		= (is_null($basis))		? 0	:		PHPExcel_Calculation_Functions::flattenSingleValue($basis);

-

-		//	Validate

-		if ((is_numeric($rate)) && (is_numeric($par))) {

-			$rate	= (float) $rate;

-			$par	= (float) $par;

-			if (($rate <= 0) || ($par <= 0)) {

-				return PHPExcel_Calculation_Functions::NaN();

-			}

-			$daysBetweenIssueAndSettlement = PHPExcel_Calculation_DateTime::YEARFRAC($issue, $settlement, $basis);

-			if (!is_numeric($daysBetweenIssueAndSettlement)) {

-				//	return date error

-				return $daysBetweenIssueAndSettlement;

-			}

-

-			return $par * $rate * $daysBetweenIssueAndSettlement;

-		}

-		return PHPExcel_Calculation_Functions::VALUE();

-	}	//	function ACCRINT()

-

-

-	/**

-	 * ACCRINTM

-	 *

-	 * Returns the accrued interest for a security that pays interest at maturity.

-	 *

-	 * Excel Function:

-	 *		ACCRINTM(issue,settlement,rate[,par[,basis]])

-	 *

-	 * @access	public

-	 * @category Financial Functions

-	 * @param	mixed	issue		The security's issue date.

-	 * @param	mixed	settlement	The security's settlement (or maturity) date.

-	 * @param	float	rate		The security's annual coupon rate.

-	 * @param	float	par			The security's par value.

-	 *									If you omit par, ACCRINT uses $1,000.

-	 * @param	integer	basis		The type of day count to use.

-	 *										0 or omitted	US (NASD) 30/360

-	 *										1				Actual/actual

-	 *										2				Actual/360

-	 *										3				Actual/365

-	 *										4				European 30/360

-	 * @return	float

-	 */

-	public static function ACCRINTM($issue, $settlement, $rate, $par=1000, $basis=0) {

-		$issue		= PHPExcel_Calculation_Functions::flattenSingleValue($issue);

-		$settlement	= PHPExcel_Calculation_Functions::flattenSingleValue($settlement);

-		$rate		= PHPExcel_Calculation_Functions::flattenSingleValue($rate);

-		$par		= (is_null($par))	? 1000 :	PHPExcel_Calculation_Functions::flattenSingleValue($par);

-		$basis		= (is_null($basis))	? 0 :		PHPExcel_Calculation_Functions::flattenSingleValue($basis);

-

-		//	Validate

-		if ((is_numeric($rate)) && (is_numeric($par))) {

-			$rate	= (float) $rate;

-			$par	= (float) $par;

-			if (($rate <= 0) || ($par <= 0)) {

-				return PHPExcel_Calculation_Functions::NaN();

-			}

-			$daysBetweenIssueAndSettlement = PHPExcel_Calculation_DateTime::YEARFRAC($issue, $settlement, $basis);

-			if (!is_numeric($daysBetweenIssueAndSettlement)) {

-				//	return date error

-				return $daysBetweenIssueAndSettlement;

-			}

-			return $par * $rate * $daysBetweenIssueAndSettlement;

-		}

-		return PHPExcel_Calculation_Functions::VALUE();

-	}	//	function ACCRINTM()

-

-

-	/**

-	 * AMORDEGRC

-	 *

-	 * Returns the depreciation for each accounting period.

-	 * This function is provided for the French accounting system. If an asset is purchased in

-	 * the middle of the accounting period, the prorated depreciation is taken into account.

-	 * The function is similar to AMORLINC, except that a depreciation coefficient is applied in

-	 * the calculation depending on the life of the assets.

-	 * This function will return the depreciation until the last period of the life of the assets

-	 * or until the cumulated value of depreciation is greater than the cost of the assets minus

-	 * the salvage value.

-	 *

-	 * Excel Function:

-	 *		AMORDEGRC(cost,purchased,firstPeriod,salvage,period,rate[,basis])

-	 *

-	 * @access	public

-	 * @category Financial Functions

-	 * @param	float	cost		The cost of the asset.

-	 * @param	mixed	purchased	Date of the purchase of the asset.

-	 * @param	mixed	firstPeriod	Date of the end of the first period.

-	 * @param	mixed	salvage		The salvage value at the end of the life of the asset.

-	 * @param	float	period		The period.

-	 * @param	float	rate		Rate of depreciation.

-	 * @param	integer	basis		The type of day count to use.

-	 *										0 or omitted	US (NASD) 30/360

-	 *										1				Actual/actual

-	 *										2				Actual/360

-	 *										3				Actual/365

-	 *										4				European 30/360

-	 * @return	float

-	 */

-	public static function AMORDEGRC($cost, $purchased, $firstPeriod, $salvage, $period, $rate, $basis=0) {

-		$cost			= PHPExcel_Calculation_Functions::flattenSingleValue($cost);

-		$purchased		= PHPExcel_Calculation_Functions::flattenSingleValue($purchased);

-		$firstPeriod	= PHPExcel_Calculation_Functions::flattenSingleValue($firstPeriod);

-		$salvage		= PHPExcel_Calculation_Functions::flattenSingleValue($salvage);

-		$period			= floor(PHPExcel_Calculation_Functions::flattenSingleValue($period));

-		$rate			= PHPExcel_Calculation_Functions::flattenSingleValue($rate);

-		$basis			= (is_null($basis))	? 0 :	(int) PHPExcel_Calculation_Functions::flattenSingleValue($basis);

-

-		//	The depreciation coefficients are:

-		//	Life of assets (1/rate)		Depreciation coefficient

-		//	Less than 3 years			1

-		//	Between 3 and 4 years		1.5

-		//	Between 5 and 6 years		2

-		//	More than 6 years			2.5

-		$fUsePer = 1.0 / $rate;

-		if ($fUsePer < 3.0) {

-			$amortiseCoeff = 1.0;

-		} elseif ($fUsePer < 5.0) {

-			$amortiseCoeff = 1.5;

-		} elseif ($fUsePer <= 6.0) {

-			$amortiseCoeff = 2.0;

-		} else {

-			$amortiseCoeff = 2.5;

-		}

-

-		$rate *= $amortiseCoeff;

-		$fNRate = round(PHPExcel_Calculation_DateTime::YEARFRAC($purchased, $firstPeriod, $basis) * $rate * $cost,0);

-		$cost -= $fNRate;

-		$fRest = $cost - $salvage;

-

-		for ($n = 0; $n < $period; ++$n) {

-			$fNRate = round($rate * $cost,0);

-			$fRest -= $fNRate;

-

-			if ($fRest < 0.0) {

-				switch ($period - $n) {

-					case 0	:

-					case 1	: return round($cost * 0.5, 0);

-							  break;

-					default	: return 0.0;

-							  break;

-				}

-			}

-			$cost -= $fNRate;

-		}

-		return $fNRate;

-	}	//	function AMORDEGRC()

-

-

-	/**

-	 * AMORLINC

-	 *

-	 * Returns the depreciation for each accounting period.

-	 * This function is provided for the French accounting system. If an asset is purchased in

-	 * the middle of the accounting period, the prorated depreciation is taken into account.

-	 *

-	 * Excel Function:

-	 *		AMORLINC(cost,purchased,firstPeriod,salvage,period,rate[,basis])

-	 *

-	 * @access	public

-	 * @category Financial Functions

-	 * @param	float	cost		The cost of the asset.

-	 * @param	mixed	purchased	Date of the purchase of the asset.

-	 * @param	mixed	firstPeriod	Date of the end of the first period.

-	 * @param	mixed	salvage		The salvage value at the end of the life of the asset.

-	 * @param	float	period		The period.

-	 * @param	float	rate		Rate of depreciation.

-	 * @param	integer	basis		The type of day count to use.

-	 *										0 or omitted	US (NASD) 30/360

-	 *										1				Actual/actual

-	 *										2				Actual/360

-	 *										3				Actual/365

-	 *										4				European 30/360

-	 * @return	float

-	 */

-	public static function AMORLINC($cost, $purchased, $firstPeriod, $salvage, $period, $rate, $basis=0) {

-		$cost			= PHPExcel_Calculation_Functions::flattenSingleValue($cost);

-		$purchased		= PHPExcel_Calculation_Functions::flattenSingleValue($purchased);

-		$firstPeriod	= PHPExcel_Calculation_Functions::flattenSingleValue($firstPeriod);

-		$salvage		= PHPExcel_Calculation_Functions::flattenSingleValue($salvage);

-		$period			= PHPExcel_Calculation_Functions::flattenSingleValue($period);

-		$rate			= PHPExcel_Calculation_Functions::flattenSingleValue($rate);

-		$basis			= (is_null($basis))	? 0 :	(int) PHPExcel_Calculation_Functions::flattenSingleValue($basis);

-

-		$fOneRate = $cost * $rate;

-		$fCostDelta = $cost - $salvage;

-		//	Note, quirky variation for leap years on the YEARFRAC for this function

-		$purchasedYear = PHPExcel_Calculation_DateTime::YEAR($purchased);

-		$yearFrac = PHPExcel_Calculation_DateTime::YEARFRAC($purchased, $firstPeriod, $basis);

-

-		if (($basis == 1) && ($yearFrac < 1) && (PHPExcel_Calculation_DateTime::_isLeapYear($purchasedYear))) {

-			$yearFrac *= 365 / 366;

-		}

-

-		$f0Rate = $yearFrac * $rate * $cost;

-		$nNumOfFullPeriods = intval(($cost - $salvage - $f0Rate) / $fOneRate);

-

-		if ($period == 0) {

-			return $f0Rate;

-		} elseif ($period <= $nNumOfFullPeriods) {

-			return $fOneRate;

-		} elseif ($period == ($nNumOfFullPeriods + 1)) {

-            return ($fCostDelta - $fOneRate * $nNumOfFullPeriods - $f0Rate);

-		} else {

-			return 0.0;

-		}

-	}	//	function AMORLINC()

-

-

-	/**

-	 * COUPDAYBS

-	 *

-	 * Returns the number of days from the beginning of the coupon period to the settlement date.

-	 *

-	 * Excel Function:

-	 *		COUPDAYBS(settlement,maturity,frequency[,basis])

-	 *

-	 * @access	public

-	 * @category Financial Functions

-	 * @param	mixed	settlement	The security's settlement date.

-	 *								The security settlement date is the date after the issue

-	 *								date when the security is traded to the buyer.

-	 * @param	mixed	maturity	The security's maturity date.

-	 *								The maturity date is the date when the security expires.

-	 * @param	mixed	frequency	the number of coupon payments per year.

-	 *									Valid frequency values are:

-	 *										1	Annual

-	 *										2	Semi-Annual

-	 *										4	Quarterly

-	 *									If working in Gnumeric Mode, the following frequency options are

-	 *									also available

-	 *										6	Bimonthly

-	 *										12	Monthly

-	 * @param	integer		basis		The type of day count to use.

-	 *										0 or omitted	US (NASD) 30/360

-	 *										1				Actual/actual

-	 *										2				Actual/360

-	 *										3				Actual/365

-	 *										4				European 30/360

-	 * @return	float

-	 */

-	public static function COUPDAYBS($settlement, $maturity, $frequency, $basis=0) {

-		$settlement	= PHPExcel_Calculation_Functions::flattenSingleValue($settlement);

-		$maturity	= PHPExcel_Calculation_Functions::flattenSingleValue($maturity);

-		$frequency	= (int) PHPExcel_Calculation_Functions::flattenSingleValue($frequency);

-		$basis		= (is_null($basis))	? 0 :	(int) PHPExcel_Calculation_Functions::flattenSingleValue($basis);

-

-		if (is_string($settlement = PHPExcel_Calculation_DateTime::_getDateValue($settlement))) {

-			return PHPExcel_Calculation_Functions::VALUE();

-		}

-		if (is_string($maturity = PHPExcel_Calculation_DateTime::_getDateValue($maturity))) {

-			return PHPExcel_Calculation_Functions::VALUE();

-		}

-

-		if (($settlement > $maturity) ||

-			(!self::_validFrequency($frequency)) ||

-			(($basis < 0) || ($basis > 4))) {

-			return PHPExcel_Calculation_Functions::NaN();

-		}

-

-		$daysPerYear = self::_daysPerYear(PHPExcel_Calculation_DateTime::YEAR($settlement),$basis);

-		$prev = self::_coupFirstPeriodDate($settlement, $maturity, $frequency, False);

-

-		return PHPExcel_Calculation_DateTime::YEARFRAC($prev, $settlement, $basis) * $daysPerYear;

-	}	//	function COUPDAYBS()

-

-

-	/**

-	 * COUPDAYS

-	 *

-	 * Returns the number of days in the coupon period that contains the settlement date.

-	 *

-	 * Excel Function:

-	 *		COUPDAYS(settlement,maturity,frequency[,basis])

-	 *

-	 * @access	public

-	 * @category Financial Functions

-	 * @param	mixed	settlement	The security's settlement date.

-	 *								The security settlement date is the date after the issue

-	 *								date when the security is traded to the buyer.

-	 * @param	mixed	maturity	The security's maturity date.

-	 *								The maturity date is the date when the security expires.

-	 * @param	mixed	frequency	the number of coupon payments per year.

-	 *									Valid frequency values are:

-	 *										1	Annual

-	 *										2	Semi-Annual

-	 *										4	Quarterly

-	 *									If working in Gnumeric Mode, the following frequency options are

-	 *									also available

-	 *										6	Bimonthly

-	 *										12	Monthly

-	 * @param	integer		basis		The type of day count to use.

-	 *										0 or omitted	US (NASD) 30/360

-	 *										1				Actual/actual

-	 *										2				Actual/360

-	 *										3				Actual/365

-	 *										4				European 30/360

-	 * @return	float

-	 */

-	public static function COUPDAYS($settlement, $maturity, $frequency, $basis=0) {

-		$settlement	= PHPExcel_Calculation_Functions::flattenSingleValue($settlement);

-		$maturity	= PHPExcel_Calculation_Functions::flattenSingleValue($maturity);

-		$frequency	= (int) PHPExcel_Calculation_Functions::flattenSingleValue($frequency);

-		$basis		= (is_null($basis))	? 0 :	(int) PHPExcel_Calculation_Functions::flattenSingleValue($basis);

-

-		if (is_string($settlement = PHPExcel_Calculation_DateTime::_getDateValue($settlement))) {

-			return PHPExcel_Calculation_Functions::VALUE();

-		}

-		if (is_string($maturity = PHPExcel_Calculation_DateTime::_getDateValue($maturity))) {

-			return PHPExcel_Calculation_Functions::VALUE();

-		}

-

-		if (($settlement > $maturity) ||

-			(!self::_validFrequency($frequency)) ||

-			(($basis < 0) || ($basis > 4))) {

-			return PHPExcel_Calculation_Functions::NaN();

-		}

-

-		switch ($basis) {

-			case 3: // Actual/365

-					return 365 / $frequency;

-			case 1: // Actual/actual

-					if ($frequency == 1) {

-						$daysPerYear = self::_daysPerYear(PHPExcel_Calculation_DateTime::YEAR($maturity),$basis);

-						return ($daysPerYear / $frequency);

-					} else {

-						$prev = self::_coupFirstPeriodDate($settlement, $maturity, $frequency, False);

-						$next = self::_coupFirstPeriodDate($settlement, $maturity, $frequency, True);

-						return ($next - $prev);

-					}

-			default: // US (NASD) 30/360, Actual/360 or European 30/360

-					return 360 / $frequency;

-		}

-		return PHPExcel_Calculation_Functions::VALUE();

-	}	//	function COUPDAYS()

-

-

-	/**

-	 * COUPDAYSNC

-	 *

-	 * Returns the number of days from the settlement date to the next coupon date.

-	 *

-	 * Excel Function:

-	 *		COUPDAYSNC(settlement,maturity,frequency[,basis])

-	 *

-	 * @access	public

-	 * @category Financial Functions

-	 * @param	mixed	settlement	The security's settlement date.

-	 *								The security settlement date is the date after the issue

-	 *								date when the security is traded to the buyer.

-	 * @param	mixed	maturity	The security's maturity date.

-	 *								The maturity date is the date when the security expires.

-	 * @param	mixed	frequency	the number of coupon payments per year.

-	 *									Valid frequency values are:

-	 *										1	Annual

-	 *										2	Semi-Annual

-	 *										4	Quarterly

-	 *									If working in Gnumeric Mode, the following frequency options are

-	 *									also available

-	 *										6	Bimonthly

-	 *										12	Monthly

-	 * @param	integer		basis		The type of day count to use.

-	 *										0 or omitted	US (NASD) 30/360

-	 *										1				Actual/actual

-	 *										2				Actual/360

-	 *										3				Actual/365

-	 *										4				European 30/360

-	 * @return	float

-	 */

-	public static function COUPDAYSNC($settlement, $maturity, $frequency, $basis=0) {

-		$settlement	= PHPExcel_Calculation_Functions::flattenSingleValue($settlement);

-		$maturity	= PHPExcel_Calculation_Functions::flattenSingleValue($maturity);

-		$frequency	= (int) PHPExcel_Calculation_Functions::flattenSingleValue($frequency);

-		$basis		= (is_null($basis))	? 0 :	(int) PHPExcel_Calculation_Functions::flattenSingleValue($basis);

-

-		if (is_string($settlement = PHPExcel_Calculation_DateTime::_getDateValue($settlement))) {

-			return PHPExcel_Calculation_Functions::VALUE();

-		}

-		if (is_string($maturity = PHPExcel_Calculation_DateTime::_getDateValue($maturity))) {

-			return PHPExcel_Calculation_Functions::VALUE();

-		}

-

-		if (($settlement > $maturity) ||

-			(!self::_validFrequency($frequency)) ||

-			(($basis < 0) || ($basis > 4))) {

-			return PHPExcel_Calculation_Functions::NaN();

-		}

-

-		$daysPerYear = self::_daysPerYear(PHPExcel_Calculation_DateTime::YEAR($settlement),$basis);

-		$next = self::_coupFirstPeriodDate($settlement, $maturity, $frequency, True);

-

-		return PHPExcel_Calculation_DateTime::YEARFRAC($settlement, $next, $basis) * $daysPerYear;

-	}	//	function COUPDAYSNC()

-

-

-	/**

-	 * COUPNCD

-	 *

-	 * Returns the next coupon date after the settlement date.

-	 *

-	 * Excel Function:

-	 *		COUPNCD(settlement,maturity,frequency[,basis])

-	 *

-	 * @access	public

-	 * @category Financial Functions

-	 * @param	mixed	settlement	The security's settlement date.

-	 *								The security settlement date is the date after the issue

-	 *								date when the security is traded to the buyer.

-	 * @param	mixed	maturity	The security's maturity date.

-	 *								The maturity date is the date when the security expires.

-	 * @param	mixed	frequency	the number of coupon payments per year.

-	 *									Valid frequency values are:

-	 *										1	Annual

-	 *										2	Semi-Annual

-	 *										4	Quarterly

-	 *									If working in Gnumeric Mode, the following frequency options are

-	 *									also available

-	 *										6	Bimonthly

-	 *										12	Monthly

-	 * @param	integer		basis		The type of day count to use.

-	 *										0 or omitted	US (NASD) 30/360

-	 *										1				Actual/actual

-	 *										2				Actual/360

-	 *										3				Actual/365

-	 *										4				European 30/360

-	 * @return	mixed	Excel date/time serial value, PHP date/time serial value or PHP date/time object,

-	 *						depending on the value of the ReturnDateType flag

-	 */

-	public static function COUPNCD($settlement, $maturity, $frequency, $basis=0) {

-		$settlement	= PHPExcel_Calculation_Functions::flattenSingleValue($settlement);

-		$maturity	= PHPExcel_Calculation_Functions::flattenSingleValue($maturity);

-		$frequency	= (int) PHPExcel_Calculation_Functions::flattenSingleValue($frequency);

-		$basis		= (is_null($basis))	? 0 :	(int) PHPExcel_Calculation_Functions::flattenSingleValue($basis);

-

-		if (is_string($settlement = PHPExcel_Calculation_DateTime::_getDateValue($settlement))) {

-			return PHPExcel_Calculation_Functions::VALUE();

-		}

-		if (is_string($maturity = PHPExcel_Calculation_DateTime::_getDateValue($maturity))) {

-			return PHPExcel_Calculation_Functions::VALUE();

-		}

-

-		if (($settlement > $maturity) ||

-			(!self::_validFrequency($frequency)) ||

-			(($basis < 0) || ($basis > 4))) {

-			return PHPExcel_Calculation_Functions::NaN();

-		}

-

-		return self::_coupFirstPeriodDate($settlement, $maturity, $frequency, True);

-	}	//	function COUPNCD()

-

-

-	/**

-	 * COUPNUM

-	 *

-	 * Returns the number of coupons payable between the settlement date and maturity date,

-	 * rounded up to the nearest whole coupon.

-	 *

-	 * Excel Function:

-	 *		COUPNUM(settlement,maturity,frequency[,basis])

-	 *

-	 * @access	public

-	 * @category Financial Functions

-	 * @param	mixed	settlement	The security's settlement date.

-	 *								The security settlement date is the date after the issue

-	 *								date when the security is traded to the buyer.

-	 * @param	mixed	maturity	The security's maturity date.

-	 *								The maturity date is the date when the security expires.

-	 * @param	mixed	frequency	the number of coupon payments per year.

-	 *									Valid frequency values are:

-	 *										1	Annual

-	 *										2	Semi-Annual

-	 *										4	Quarterly

-	 *									If working in Gnumeric Mode, the following frequency options are

-	 *									also available

-	 *										6	Bimonthly

-	 *										12	Monthly

-	 * @param	integer		basis		The type of day count to use.

-	 *										0 or omitted	US (NASD) 30/360

-	 *										1				Actual/actual

-	 *										2				Actual/360

-	 *										3				Actual/365

-	 *										4				European 30/360

-	 * @return	integer

-	 */

-	public static function COUPNUM($settlement, $maturity, $frequency, $basis=0) {

-		$settlement	= PHPExcel_Calculation_Functions::flattenSingleValue($settlement);

-		$maturity	= PHPExcel_Calculation_Functions::flattenSingleValue($maturity);

-		$frequency	= (int) PHPExcel_Calculation_Functions::flattenSingleValue($frequency);

-		$basis		= (is_null($basis))	? 0 :	(int) PHPExcel_Calculation_Functions::flattenSingleValue($basis);

-

-		if (is_string($settlement = PHPExcel_Calculation_DateTime::_getDateValue($settlement))) {

-			return PHPExcel_Calculation_Functions::VALUE();

-		}

-		if (is_string($maturity = PHPExcel_Calculation_DateTime::_getDateValue($maturity))) {

-			return PHPExcel_Calculation_Functions::VALUE();

-		}

-

-		if (($settlement > $maturity) ||

-			(!self::_validFrequency($frequency)) ||

-			(($basis < 0) || ($basis > 4))) {

-			return PHPExcel_Calculation_Functions::NaN();

-		}

-

-		$settlement = self::_coupFirstPeriodDate($settlement, $maturity, $frequency, True);

-		$daysBetweenSettlementAndMaturity = PHPExcel_Calculation_DateTime::YEARFRAC($settlement, $maturity, $basis) * 365;

-

-		switch ($frequency) {

-			case 1: // annual payments

-					return ceil($daysBetweenSettlementAndMaturity / 360);

-			case 2: // half-yearly

-					return ceil($daysBetweenSettlementAndMaturity / 180);

-			case 4: // quarterly

-					return ceil($daysBetweenSettlementAndMaturity / 90);

-			case 6: // bimonthly

-					return ceil($daysBetweenSettlementAndMaturity / 60);

-			case 12: // monthly

-					return ceil($daysBetweenSettlementAndMaturity / 30);

-		}

-		return PHPExcel_Calculation_Functions::VALUE();

-	}	//	function COUPNUM()

-

-

-	/**

-	 * COUPPCD

-	 *

-	 * Returns the previous coupon date before the settlement date.

-	 *

-	 * Excel Function:

-	 *		COUPPCD(settlement,maturity,frequency[,basis])

-	 *

-	 * @access	public

-	 * @category Financial Functions

-	 * @param	mixed	settlement	The security's settlement date.

-	 *								The security settlement date is the date after the issue

-	 *								date when the security is traded to the buyer.

-	 * @param	mixed	maturity	The security's maturity date.

-	 *								The maturity date is the date when the security expires.

-	 * @param	mixed	frequency	the number of coupon payments per year.

-	 *									Valid frequency values are:

-	 *										1	Annual

-	 *										2	Semi-Annual

-	 *										4	Quarterly

-	 *									If working in Gnumeric Mode, the following frequency options are

-	 *									also available

-	 *										6	Bimonthly

-	 *										12	Monthly

-	 * @param	integer		basis		The type of day count to use.

-	 *										0 or omitted	US (NASD) 30/360

-	 *										1				Actual/actual

-	 *										2				Actual/360

-	 *										3				Actual/365

-	 *										4				European 30/360

-	 * @return	mixed	Excel date/time serial value, PHP date/time serial value or PHP date/time object,

-	 *						depending on the value of the ReturnDateType flag

-	 */

-	public static function COUPPCD($settlement, $maturity, $frequency, $basis=0) {

-		$settlement	= PHPExcel_Calculation_Functions::flattenSingleValue($settlement);

-		$maturity	= PHPExcel_Calculation_Functions::flattenSingleValue($maturity);

-		$frequency	= (int) PHPExcel_Calculation_Functions::flattenSingleValue($frequency);

-		$basis		= (is_null($basis))	? 0 :	(int) PHPExcel_Calculation_Functions::flattenSingleValue($basis);

-

-		if (is_string($settlement = PHPExcel_Calculation_DateTime::_getDateValue($settlement))) {

-			return PHPExcel_Calculation_Functions::VALUE();

-		}

-		if (is_string($maturity = PHPExcel_Calculation_DateTime::_getDateValue($maturity))) {

-			return PHPExcel_Calculation_Functions::VALUE();

-		}

-

-		if (($settlement > $maturity) ||

-			(!self::_validFrequency($frequency)) ||

-			(($basis < 0) || ($basis > 4))) {

-			return PHPExcel_Calculation_Functions::NaN();

-		}

-

-		return self::_coupFirstPeriodDate($settlement, $maturity, $frequency, False);

-	}	//	function COUPPCD()

-

-

-	/**

-	 * CUMIPMT

-	 *

-	 * Returns the cumulative interest paid on a loan between the start and end periods.

-	 *

-	 * Excel Function:

-	 *		CUMIPMT(rate,nper,pv,start,end[,type])

-	 *

-	 * @access	public

-	 * @category Financial Functions

-	 * @param	float	$rate	The Interest rate

-	 * @param	integer	$nper	The total number of payment periods

-	 * @param	float	$pv		Present Value

-	 * @param	integer	$start	The first period in the calculation.

-	 *							Payment periods are numbered beginning with 1.

-	 * @param	integer	$end	The last period in the calculation.

-	 * @param	integer	$type	A number 0 or 1 and indicates when payments are due:

-	 *								0 or omitted	At the end of the period.

-	 *								1				At the beginning of the period.

-	 * @return	float

-	 */

-	public static function CUMIPMT($rate, $nper, $pv, $start, $end, $type = 0) {

-		$rate	= PHPExcel_Calculation_Functions::flattenSingleValue($rate);

-		$nper	= (int) PHPExcel_Calculation_Functions::flattenSingleValue($nper);

-		$pv		= PHPExcel_Calculation_Functions::flattenSingleValue($pv);

-		$start	= (int) PHPExcel_Calculation_Functions::flattenSingleValue($start);

-		$end	= (int) PHPExcel_Calculation_Functions::flattenSingleValue($end);

-		$type	= (int) PHPExcel_Calculation_Functions::flattenSingleValue($type);

-

-		// Validate parameters

-		if ($type != 0 && $type != 1) {

-			return PHPExcel_Calculation_Functions::NaN();

-		}

-		if ($start < 1 || $start > $end) {

-			return PHPExcel_Calculation_Functions::VALUE();

-		}

-

-		// Calculate

-		$interest = 0;

-		for ($per = $start; $per <= $end; ++$per) {

-			$interest += self::IPMT($rate, $per, $nper, $pv, 0, $type);

-		}

-

-		return $interest;

-	}	//	function CUMIPMT()

-

-

-	/**

-	 * CUMPRINC

-	 *

-	 * Returns the cumulative principal paid on a loan between the start and end periods.

-	 *

-	 * Excel Function:

-	 *		CUMPRINC(rate,nper,pv,start,end[,type])

-	 *

-	 * @access	public

-	 * @category Financial Functions

-	 * @param	float	$rate	The Interest rate

-	 * @param	integer	$nper	The total number of payment periods

-	 * @param	float	$pv		Present Value

-	 * @param	integer	$start	The first period in the calculation.

-	 *							Payment periods are numbered beginning with 1.

-	 * @param	integer	$end	The last period in the calculation.

-	 * @param	integer	$type	A number 0 or 1 and indicates when payments are due:

-	 *								0 or omitted	At the end of the period.

-	 *								1				At the beginning of the period.

-	 * @return	float

-	 */

-	public static function CUMPRINC($rate, $nper, $pv, $start, $end, $type = 0) {

-		$rate	= PHPExcel_Calculation_Functions::flattenSingleValue($rate);

-		$nper	= (int) PHPExcel_Calculation_Functions::flattenSingleValue($nper);

-		$pv		= PHPExcel_Calculation_Functions::flattenSingleValue($pv);

-		$start	= (int) PHPExcel_Calculation_Functions::flattenSingleValue($start);

-		$end	= (int) PHPExcel_Calculation_Functions::flattenSingleValue($end);

-		$type	= (int) PHPExcel_Calculation_Functions::flattenSingleValue($type);

-

-		// Validate parameters

-		if ($type != 0 && $type != 1) {

-			return PHPExcel_Calculation_Functions::NaN();

-		}

-		if ($start < 1 || $start > $end) {

-			return PHPExcel_Calculation_Functions::VALUE();

-		}

-

-		// Calculate

-		$principal = 0;

-		for ($per = $start; $per <= $end; ++$per) {

-			$principal += self::PPMT($rate, $per, $nper, $pv, 0, $type);

-		}

-

-		return $principal;

-	}	//	function CUMPRINC()

-

-

-	/**

-	 * DB

-	 *

-	 * Returns the depreciation of an asset for a specified period using the

-	 * fixed-declining balance method.

-	 * This form of depreciation is used if you want to get a higher depreciation value

-	 * at the beginning of the depreciation (as opposed to linear depreciation). The

-	 * depreciation value is reduced with every depreciation period by the depreciation

-	 * already deducted from the initial cost.

-	 *

-	 * Excel Function:

-	 *		DB(cost,salvage,life,period[,month])

-	 *

-	 * @access	public

-	 * @category Financial Functions

-	 * @param	float	cost		Initial cost of the asset.

-	 * @param	float	salvage		Value at the end of the depreciation.

-	 *								(Sometimes called the salvage value of the asset)

-	 * @param	integer	life		Number of periods over which the asset is depreciated.

-	 *								(Sometimes called the useful life of the asset)

-	 * @param	integer	period		The period for which you want to calculate the

-	 *								depreciation. Period must use the same units as life.

-	 * @param	integer	month		Number of months in the first year. If month is omitted,

-	 *								it defaults to 12.

-	 * @return	float

-	 */

-	public static function DB($cost, $salvage, $life, $period, $month=12) {

-		$cost		= PHPExcel_Calculation_Functions::flattenSingleValue($cost);

-		$salvage	= PHPExcel_Calculation_Functions::flattenSingleValue($salvage);

-		$life		= PHPExcel_Calculation_Functions::flattenSingleValue($life);

-		$period		= PHPExcel_Calculation_Functions::flattenSingleValue($period);

-		$month		= PHPExcel_Calculation_Functions::flattenSingleValue($month);

-

-		//	Validate

-		if ((is_numeric($cost)) && (is_numeric($salvage)) && (is_numeric($life)) && (is_numeric($period)) && (is_numeric($month))) {

-			$cost		= (float) $cost;

-			$salvage	= (float) $salvage;

-			$life		= (int) $life;

-			$period		= (int) $period;

-			$month		= (int) $month;

-			if ($cost == 0) {

-				return 0.0;

-			} elseif (($cost < 0) || (($salvage / $cost) < 0) || ($life <= 0) || ($period < 1) || ($month < 1)) {

-				return PHPExcel_Calculation_Functions::NaN();

-			}

-			//	Set Fixed Depreciation Rate

-			$fixedDepreciationRate = 1 - pow(($salvage / $cost), (1 / $life));

-			$fixedDepreciationRate = round($fixedDepreciationRate, 3);

-

-			//	Loop through each period calculating the depreciation

-			$previousDepreciation = 0;

-			for ($per = 1; $per <= $period; ++$per) {

-				if ($per == 1) {

-					$depreciation = $cost * $fixedDepreciationRate * $month / 12;

-				} elseif ($per == ($life + 1)) {

-					$depreciation = ($cost - $previousDepreciation) * $fixedDepreciationRate * (12 - $month) / 12;

-				} else {

-					$depreciation = ($cost - $previousDepreciation) * $fixedDepreciationRate;

-				}

-				$previousDepreciation += $depreciation;

-			}

-			if (PHPExcel_Calculation_Functions::getCompatibilityMode() == PHPExcel_Calculation_Functions::COMPATIBILITY_GNUMERIC) {

-				$depreciation = round($depreciation,2);

-			}

-			return $depreciation;

-		}

-		return PHPExcel_Calculation_Functions::VALUE();

-	}	//	function DB()

-

-

-	/**

-	 * DDB

-	 *

-	 * Returns the depreciation of an asset for a specified period using the

-	 * double-declining balance method or some other method you specify.

-	 *

-	 * Excel Function:

-	 *		DDB(cost,salvage,life,period[,factor])

-	 *

-	 * @access	public

-	 * @category Financial Functions

-	 * @param	float	cost		Initial cost of the asset.

-	 * @param	float	salvage		Value at the end of the depreciation.

-	 *								(Sometimes called the salvage value of the asset)

-	 * @param	integer	life		Number of periods over which the asset is depreciated.

-	 *								(Sometimes called the useful life of the asset)

-	 * @param	integer	period		The period for which you want to calculate the

-	 *								depreciation. Period must use the same units as life.

-	 * @param	float	factor		The rate at which the balance declines.

-	 *								If factor is omitted, it is assumed to be 2 (the

-	 *								double-declining balance method).

-	 * @return	float

-	 */

-	public static function DDB($cost, $salvage, $life, $period, $factor=2.0) {

-		$cost		= PHPExcel_Calculation_Functions::flattenSingleValue($cost);

-		$salvage	= PHPExcel_Calculation_Functions::flattenSingleValue($salvage);

-		$life		= PHPExcel_Calculation_Functions::flattenSingleValue($life);

-		$period		= PHPExcel_Calculation_Functions::flattenSingleValue($period);

-		$factor		= PHPExcel_Calculation_Functions::flattenSingleValue($factor);

-

-		//	Validate

-		if ((is_numeric($cost)) && (is_numeric($salvage)) && (is_numeric($life)) && (is_numeric($period)) && (is_numeric($factor))) {

-			$cost		= (float) $cost;

-			$salvage	= (float) $salvage;

-			$life		= (int) $life;

-			$period		= (int) $period;

-			$factor		= (float) $factor;

-			if (($cost <= 0) || (($salvage / $cost) < 0) || ($life <= 0) || ($period < 1) || ($factor <= 0.0) || ($period > $life)) {

-				return PHPExcel_Calculation_Functions::NaN();

-			}

-			//	Set Fixed Depreciation Rate

-			$fixedDepreciationRate = 1 - pow(($salvage / $cost), (1 / $life));

-			$fixedDepreciationRate = round($fixedDepreciationRate, 3);

-

-			//	Loop through each period calculating the depreciation

-			$previousDepreciation = 0;

-			for ($per = 1; $per <= $period; ++$per) {

-				$depreciation = min( ($cost - $previousDepreciation) * ($factor / $life), ($cost - $salvage - $previousDepreciation) );

-				$previousDepreciation += $depreciation;

-			}

-			if (PHPExcel_Calculation_Functions::getCompatibilityMode() == PHPExcel_Calculation_Functions::COMPATIBILITY_GNUMERIC) {

-				$depreciation = round($depreciation,2);

-			}

-			return $depreciation;

-		}

-		return PHPExcel_Calculation_Functions::VALUE();

-	}	//	function DDB()

-

-

-	/**

-	 * DISC

-	 *

-	 * Returns the discount rate for a security.

-	 *

-	 * Excel Function:

-	 *		DISC(settlement,maturity,price,redemption[,basis])

-	 *

-	 * @access	public

-	 * @category Financial Functions

-	 * @param	mixed	settlement	The security's settlement date.

-	 *								The security settlement date is the date after the issue

-	 *								date when the security is traded to the buyer.

-	 * @param	mixed	maturity	The security's maturity date.

-	 *								The maturity date is the date when the security expires.

-	 * @param	integer	price		The security's price per $100 face value.

-	 * @param	integer	redemption	The security's redemption value per $100 face value.

-	 * @param	integer	basis		The type of day count to use.

-	 *										0 or omitted	US (NASD) 30/360

-	 *										1				Actual/actual

-	 *										2				Actual/360

-	 *										3				Actual/365

-	 *										4				European 30/360

-	 * @return	float

-	 */

-	public static function DISC($settlement, $maturity, $price, $redemption, $basis=0) {

-		$settlement	= PHPExcel_Calculation_Functions::flattenSingleValue($settlement);

-		$maturity	= PHPExcel_Calculation_Functions::flattenSingleValue($maturity);

-		$price		= PHPExcel_Calculation_Functions::flattenSingleValue($price);

-		$redemption	= PHPExcel_Calculation_Functions::flattenSingleValue($redemption);

-		$basis		= PHPExcel_Calculation_Functions::flattenSingleValue($basis);

-

-		//	Validate

-		if ((is_numeric($price)) && (is_numeric($redemption)) && (is_numeric($basis))) {

-			$price		= (float) $price;

-			$redemption	= (float) $redemption;

-			$basis		= (int) $basis;

-			if (($price <= 0) || ($redemption <= 0)) {

-				return PHPExcel_Calculation_Functions::NaN();

-			}

-			$daysBetweenSettlementAndMaturity = PHPExcel_Calculation_DateTime::YEARFRAC($settlement, $maturity, $basis);

-			if (!is_numeric($daysBetweenSettlementAndMaturity)) {

-				//	return date error

-				return $daysBetweenSettlementAndMaturity;

-			}

-

-			return ((1 - $price / $redemption) / $daysBetweenSettlementAndMaturity);

-		}

-		return PHPExcel_Calculation_Functions::VALUE();

-	}	//	function DISC()

-

-

-	/**

-	 * DOLLARDE

-	 *

-	 * Converts a dollar price expressed as an integer part and a fraction

-	 *		part into a dollar price expressed as a decimal number.

-	 * Fractional dollar numbers are sometimes used for security prices.

-	 *

-	 * Excel Function:

-	 *		DOLLARDE(fractional_dollar,fraction)

-	 *

-	 * @access	public

-	 * @category Financial Functions

-	 * @param	float	$fractional_dollar	Fractional Dollar

-	 * @param	integer	$fraction			Fraction

-	 * @return	float

-	 */

-	public static function DOLLARDE($fractional_dollar = Null, $fraction = 0) {

-		$fractional_dollar	= PHPExcel_Calculation_Functions::flattenSingleValue($fractional_dollar);

-		$fraction			= (int)PHPExcel_Calculation_Functions::flattenSingleValue($fraction);

-

-		// Validate parameters

-		if (is_null($fractional_dollar) || $fraction < 0) {

-			return PHPExcel_Calculation_Functions::NaN();

-		}

-		if ($fraction == 0) {

-			return PHPExcel_Calculation_Functions::DIV0();

-		}

-

-		$dollars = floor($fractional_dollar);

-		$cents = fmod($fractional_dollar,1);

-		$cents /= $fraction;

-		$cents *= pow(10,ceil(log10($fraction)));

-		return $dollars + $cents;

-	}	//	function DOLLARDE()

-

-

-	/**

-	 * DOLLARFR

-	 *

-	 * Converts a dollar price expressed as a decimal number into a dollar price

-	 *		expressed as a fraction.

-	 * Fractional dollar numbers are sometimes used for security prices.

-	 *

-	 * Excel Function:

-	 *		DOLLARFR(decimal_dollar,fraction)

-	 *

-	 * @access	public

-	 * @category Financial Functions

-	 * @param	float	$decimal_dollar		Decimal Dollar

-	 * @param	integer	$fraction			Fraction

-	 * @return	float

-	 */

-	public static function DOLLARFR($decimal_dollar = Null, $fraction = 0) {

-		$decimal_dollar	= PHPExcel_Calculation_Functions::flattenSingleValue($decimal_dollar);

-		$fraction		= (int)PHPExcel_Calculation_Functions::flattenSingleValue($fraction);

-

-		// Validate parameters

-		if (is_null($decimal_dollar) || $fraction < 0) {

-			return PHPExcel_Calculation_Functions::NaN();

-		}

-		if ($fraction == 0) {

-			return PHPExcel_Calculation_Functions::DIV0();

-		}

-

-		$dollars = floor($decimal_dollar);

-		$cents = fmod($decimal_dollar,1);

-		$cents *= $fraction;

-		$cents *= pow(10,-ceil(log10($fraction)));

-		return $dollars + $cents;

-	}	//	function DOLLARFR()

-

-

-	/**

-	 * EFFECT

-	 *

-	 * Returns the effective interest rate given the nominal rate and the number of

-	 *		compounding payments per year.

-	 *

-	 * Excel Function:

-	 *		EFFECT(nominal_rate,npery)

-	 *

-	 * @access	public

-	 * @category Financial Functions

-	 * @param	float	$nominal_rate		Nominal interest rate

-	 * @param	integer	$npery				Number of compounding payments per year

-	 * @return	float

-	 */

-	public static function EFFECT($nominal_rate = 0, $npery = 0) {

-		$nominal_rate	= PHPExcel_Calculation_Functions::flattenSingleValue($nominal_rate);

-		$npery			= (int)PHPExcel_Calculation_Functions::flattenSingleValue($npery);

-

-		// Validate parameters

-		if ($nominal_rate <= 0 || $npery < 1) {

-			return PHPExcel_Calculation_Functions::NaN();

-		}

-

-		return pow((1 + $nominal_rate / $npery), $npery) - 1;

-	}	//	function EFFECT()

-

-

-	/**

-	 * FV

-	 *

-	 * Returns the Future Value of a cash flow with constant payments and interest rate (annuities).

-	 *

-	 * Excel Function:

-	 *		FV(rate,nper,pmt[,pv[,type]])

-	 *

-	 * @access	public

-	 * @category Financial Functions

-	 * @param	float	$rate	The interest rate per period

-	 * @param	int		$nper	Total number of payment periods in an annuity

-	 * @param	float	$pmt	The payment made each period: it cannot change over the

-	 *							life of the annuity. Typically, pmt contains principal

-	 *							and interest but no other fees or taxes.

-	 * @param	float	$pv		Present Value, or the lump-sum amount that a series of

-	 *							future payments is worth right now.

-	 * @param	integer	$type	A number 0 or 1 and indicates when payments are due:

-	 *								0 or omitted	At the end of the period.

-	 *								1				At the beginning of the period.

-	 * @return	float

-	 */

-	public static function FV($rate = 0, $nper = 0, $pmt = 0, $pv = 0, $type = 0) {

-		$rate	= PHPExcel_Calculation_Functions::flattenSingleValue($rate);

-		$nper	= PHPExcel_Calculation_Functions::flattenSingleValue($nper);

-		$pmt	= PHPExcel_Calculation_Functions::flattenSingleValue($pmt);

-		$pv		= PHPExcel_Calculation_Functions::flattenSingleValue($pv);

-		$type	= PHPExcel_Calculation_Functions::flattenSingleValue($type);

-

-		// Validate parameters

-		if ($type != 0 && $type != 1) {

-			return PHPExcel_Calculation_Functions::NaN();

-		}

-

-		// Calculate

-		if (!is_null($rate) && $rate != 0) {

-			return -$pv * pow(1 + $rate, $nper) - $pmt * (1 + $rate * $type) * (pow(1 + $rate, $nper) - 1) / $rate;

-		} else {

-			return -$pv - $pmt * $nper;

-		}

-	}	//	function FV()

-

-

-	/**

-	 * FVSCHEDULE

-	 *

-	 */

-	public static function FVSCHEDULE($principal, $schedule) {

-		$principal	= PHPExcel_Calculation_Functions::flattenSingleValue($principal);

-		$schedule	= PHPExcel_Calculation_Functions::flattenArray($schedule);

-

-		foreach($schedule as $n) {

-			$principal *= 1 + $n;

-		}

-

-		return $principal;

-	}	//	function FVSCHEDULE()

-

-

-	/**

-	 * INTRATE

-	 *

-	 * Returns the interest rate for a fully invested security.

-	 *

-	 * Excel Function:

-	 *		INTRATE(settlement,maturity,investment,redemption[,basis])

-	 *

-	 * @param	mixed	settlement	The security's settlement date.

-	 *								The security settlement date is the date after the issue date when the security is traded to the buyer.

-	 * @param	mixed	maturity	The security's maturity date.

-	 *								The maturity date is the date when the security expires.

-	 * @param	integer	investment	The amount invested in the security.

-	 * @param	integer	redemption	The amount to be received at maturity.

-	 * @param	integer	basis		The type of day count to use.

-	 *										0 or omitted	US (NASD) 30/360

-	 *										1				Actual/actual

-	 *										2				Actual/360

-	 *										3				Actual/365

-	 *										4				European 30/360

-	 * @return	float

-	 */

-	public static function INTRATE($settlement, $maturity, $investment, $redemption, $basis=0) {

-		$settlement	= PHPExcel_Calculation_Functions::flattenSingleValue($settlement);

-		$maturity	= PHPExcel_Calculation_Functions::flattenSingleValue($maturity);

-		$investment	= PHPExcel_Calculation_Functions::flattenSingleValue($investment);

-		$redemption	= PHPExcel_Calculation_Functions::flattenSingleValue($redemption);

-		$basis		= PHPExcel_Calculation_Functions::flattenSingleValue($basis);

-

-		//	Validate

-		if ((is_numeric($investment)) && (is_numeric($redemption)) && (is_numeric($basis))) {

-			$investment	= (float) $investment;

-			$redemption	= (float) $redemption;

-			$basis		= (int) $basis;

-			if (($investment <= 0) || ($redemption <= 0)) {

-				return PHPExcel_Calculation_Functions::NaN();

-			}

-			$daysBetweenSettlementAndMaturity = PHPExcel_Calculation_DateTime::YEARFRAC($settlement, $maturity, $basis);

-			if (!is_numeric($daysBetweenSettlementAndMaturity)) {

-				//	return date error

-				return $daysBetweenSettlementAndMaturity;

-			}

-

-			return (($redemption / $investment) - 1) / ($daysBetweenSettlementAndMaturity);

-		}

-		return PHPExcel_Calculation_Functions::VALUE();

-	}	//	function INTRATE()

-

-

-	/**

-	 * IPMT

-	 *

-	 * Returns the interest payment for a given period for an investment based on periodic, constant payments and a constant interest rate.

-	 *

-	 * @param	float	$rate	Interest rate per period

-	 * @param	int		$per	Period for which we want to find the interest

-	 * @param	int		$nper	Number of periods

-	 * @param	float	$pv		Present Value

-	 * @param	float	$fv		Future Value

-	 * @param	int		$type	Payment type: 0 = at the end of each period, 1 = at the beginning of each period

-	 * @return	float

-	 */

-	public static function IPMT($rate, $per, $nper, $pv, $fv = 0, $type = 0) {

-		$rate	= PHPExcel_Calculation_Functions::flattenSingleValue($rate);

-		$per	= (int) PHPExcel_Calculation_Functions::flattenSingleValue($per);

-		$nper	= (int) PHPExcel_Calculation_Functions::flattenSingleValue($nper);

-		$pv		= PHPExcel_Calculation_Functions::flattenSingleValue($pv);

-		$fv		= PHPExcel_Calculation_Functions::flattenSingleValue($fv);

-		$type	= (int) PHPExcel_Calculation_Functions::flattenSingleValue($type);

-

-		// Validate parameters

-		if ($type != 0 && $type != 1) {

-			return PHPExcel_Calculation_Functions::NaN();

-		}

-		if ($per <= 0 || $per > $nper) {

-			return PHPExcel_Calculation_Functions::VALUE();

-		}

-

-		// Calculate

-		$interestAndPrincipal = self::_interestAndPrincipal($rate, $per, $nper, $pv, $fv, $type);

-		return $interestAndPrincipal[0];

-	}	//	function IPMT()

-

-

-	public static function IRR($values, $guess = 0.1) {

-		if (!is_array($values)) return PHPExcel_Calculation_Functions::VALUE();

-		$values = PHPExcel_Calculation_Functions::flattenArray($values);

-		$guess = PHPExcel_Calculation_Functions::flattenSingleValue($guess);

-

-		// create an initial range, with a root somewhere between 0 and guess

-		$x1 = 0.0;

-		$x2 = $guess;

-		$f1 = self::NPV($x1, $values);

-		$f2 = self::NPV($x2, $values);

-		for ($i = 0; $i < FINANCIAL_MAX_ITERATIONS; ++$i) {

-			if (($f1 * $f2) < 0.0) break;

-			if (abs($f1) < abs($f2)) {

-				$f1 = self::NPV($x1 += 1.6 * ($x1 - $x2), $values);

-			} else {

-				$f2 = self::NPV($x2 += 1.6 * ($x2 - $x1), $values);

-			}

-		}

-		if (($f1 * $f2) > 0.0) return PHPExcel_Calculation_Functions::VALUE();

-

-		$f = self::NPV($x1, $values);

-		if ($f < 0.0) {

-			$rtb = $x1;

-			$dx = $x2 - $x1;

-		} else {

-			$rtb = $x2;

-			$dx = $x1 - $x2;

-		}

-

-		for ($i = 0;  $i < FINANCIAL_MAX_ITERATIONS; ++$i) {

-			$dx *= 0.5;

-			$x_mid = $rtb + $dx;

-			$f_mid = self::NPV($x_mid, $values);

-			if ($f_mid <= 0.0) $rtb = $x_mid;

-			if ((abs($f_mid) < FINANCIAL_PRECISION) || (abs($dx) < FINANCIAL_PRECISION)) return $x_mid;

-		}

-		return PHPExcel_Calculation_Functions::VALUE();

-	}	//	function IRR()

-

-

-	/**

-	 *      ISPMT

-	 *

-	 *      Returns the interest payment for an investment based on an interest rate and a constant payment schedule.

-	 *

-	 *      Excel Function:

-	 *          =ISPMT(interest_rate, period, number_payments, PV)

-	 *

-	 *      interest_rate is the interest rate for the investment

-	 *

-	 *      period is the period to calculate the interest rate.  It must be betweeen 1 and number_payments.

-	 *

-	 *      number_payments is the number of payments for the annuity

-	 *

-	 *      PV is the loan amount or present value of the payments

-	 */

-	public static function ISPMT() {

-		// Return value

-		$returnValue = 0;

-

-		// Get the parameters

-		$aArgs = PHPExcel_Calculation_Functions::flattenArray(func_get_args());

-		$interestRate = array_shift($aArgs);

-		$period = array_shift($aArgs);

-		$numberPeriods = array_shift($aArgs);

-		$principleRemaining = array_shift($aArgs);

-

-		// Calculate

-		$principlePayment = ($principleRemaining * 1.0) / ($numberPeriods * 1.0);

-		for($i=0; $i <= $period; ++$i) {

-			$returnValue = $interestRate * $principleRemaining * -1;

-			$principleRemaining -= $principlePayment;

-			// principle needs to be 0 after the last payment, don't let floating point screw it up

-			if($i == $numberPeriods) {

-				$returnValue = 0;

-			}

-		}

-		return($returnValue);

-	}	//	function ISPMT()

-

-

-	public static function MIRR($values, $finance_rate, $reinvestment_rate) {

-		if (!is_array($values)) return PHPExcel_Calculation_Functions::VALUE();

-		$values				= PHPExcel_Calculation_Functions::flattenArray($values);

-		$finance_rate		= PHPExcel_Calculation_Functions::flattenSingleValue($finance_rate);

-		$reinvestment_rate	= PHPExcel_Calculation_Functions::flattenSingleValue($reinvestment_rate);

-		$n = count($values);

-

-		$rr = 1.0 + $reinvestment_rate;

-		$fr = 1.0 + $finance_rate;

-

-		$npv_pos = $npv_neg = 0.0;

-		foreach($values as $i => $v) {

-			if ($v >= 0) {

-				$npv_pos += $v / pow($rr, $i);

-			} else {

-				$npv_neg += $v / pow($fr, $i);

-			}

-		}

-

-		if (($npv_neg == 0) || ($npv_pos == 0) || ($reinvestment_rate <= -1)) {

-			return PHPExcel_Calculation_Functions::VALUE();

-		}

-

-		$mirr = pow((-$npv_pos * pow($rr, $n))

-				/ ($npv_neg * ($rr)), (1.0 / ($n - 1))) - 1.0;

-

-		return (is_finite($mirr) ? $mirr : PHPExcel_Calculation_Functions::VALUE());

-	}	//	function MIRR()

-

-

-	/**

-	 * NOMINAL

-	 *

-	 * Returns the nominal interest rate given the effective rate and the number of compounding payments per year.

-	 *

-	 * @param	float	$effect_rate	Effective interest rate

-	 * @param	int		$npery			Number of compounding payments per year

-	 * @return	float

-	 */

-	public static function NOMINAL($effect_rate = 0, $npery = 0) {

-		$effect_rate	= PHPExcel_Calculation_Functions::flattenSingleValue($effect_rate);

-		$npery			= (int)PHPExcel_Calculation_Functions::flattenSingleValue($npery);

-

-		// Validate parameters

-		if ($effect_rate <= 0 || $npery < 1) {

-			return PHPExcel_Calculation_Functions::NaN();

-		}

-

-		// Calculate

-		return $npery * (pow($effect_rate + 1, 1 / $npery) - 1);

-	}	//	function NOMINAL()

-

-

-	/**

-	 * NPER

-	 *

-	 * Returns the number of periods for a cash flow with constant periodic payments (annuities), and interest rate.

-	 *

-	 * @param	float	$rate	Interest rate per period

-	 * @param	int		$pmt	Periodic payment (annuity)

-	 * @param	float	$pv		Present Value

-	 * @param	float	$fv		Future Value

-	 * @param	int		$type	Payment type: 0 = at the end of each period, 1 = at the beginning of each period

-	 * @return	float

-	 */

-	public static function NPER($rate = 0, $pmt = 0, $pv = 0, $fv = 0, $type = 0) {

-		$rate	= PHPExcel_Calculation_Functions::flattenSingleValue($rate);

-		$pmt	= PHPExcel_Calculation_Functions::flattenSingleValue($pmt);

-		$pv		= PHPExcel_Calculation_Functions::flattenSingleValue($pv);

-		$fv		= PHPExcel_Calculation_Functions::flattenSingleValue($fv);

-		$type	= PHPExcel_Calculation_Functions::flattenSingleValue($type);

-

-		// Validate parameters

-		if ($type != 0 && $type != 1) {

-			return PHPExcel_Calculation_Functions::NaN();

-		}

-

-		// Calculate

-		if (!is_null($rate) && $rate != 0) {

-			if ($pmt == 0 && $pv == 0) {

-				return PHPExcel_Calculation_Functions::NaN();

-			}

-			return log(($pmt * (1 + $rate * $type) / $rate - $fv) / ($pv + $pmt * (1 + $rate * $type) / $rate)) / log(1 + $rate);

-		} else {

-			if ($pmt == 0) {

-				return PHPExcel_Calculation_Functions::NaN();

-			}

-			return (-$pv -$fv) / $pmt;

-		}

-	}	//	function NPER()

-

-

-	/**

-	 * NPV

-	 *

-	 * Returns the Net Present Value of a cash flow series given a discount rate.

-	 *

-	 * @param	float	Discount interest rate

-	 * @param	array	Cash flow series

-	 * @return	float

-	 */

-	public static function NPV() {

-		// Return value

-		$returnValue = 0;

-

-		// Loop through arguments

-		$aArgs = PHPExcel_Calculation_Functions::flattenArray(func_get_args());

-

-		// Calculate

-		$rate = array_shift($aArgs);

-		for ($i = 1; $i <= count($aArgs); ++$i) {

-			// Is it a numeric value?

-			if (is_numeric($aArgs[$i - 1])) {

-				$returnValue += $aArgs[$i - 1] / pow(1 + $rate, $i);

-			}

-		}

-

-		// Return

-		return $returnValue;

-	}	//	function NPV()

-

-

-	/**

-	 * PMT

-	 *

-	 * Returns the constant payment (annuity) for a cash flow with a constant interest rate.

-	 *

-	 * @param	float	$rate	Interest rate per period

-	 * @param	int		$nper	Number of periods

-	 * @param	float	$pv		Present Value

-	 * @param	float	$fv		Future Value

-	 * @param	int		$type	Payment type: 0 = at the end of each period, 1 = at the beginning of each period

-	 * @return	float

-	 */

-	public static function PMT($rate = 0, $nper = 0, $pv = 0, $fv = 0, $type = 0) {

-		$rate	= PHPExcel_Calculation_Functions::flattenSingleValue($rate);

-		$nper	= PHPExcel_Calculation_Functions::flattenSingleValue($nper);

-		$pv		= PHPExcel_Calculation_Functions::flattenSingleValue($pv);

-		$fv		= PHPExcel_Calculation_Functions::flattenSingleValue($fv);

-		$type	= PHPExcel_Calculation_Functions::flattenSingleValue($type);

-

-		// Validate parameters

-		if ($type != 0 && $type != 1) {

-			return PHPExcel_Calculation_Functions::NaN();

-		}

-

-		// Calculate

-		if (!is_null($rate) && $rate != 0) {

-			return (-$fv - $pv * pow(1 + $rate, $nper)) / (1 + $rate * $type) / ((pow(1 + $rate, $nper) - 1) / $rate);

-		} else {

-			return (-$pv - $fv) / $nper;

-		}

-	}	//	function PMT()

-

-

-	/**

-	 * PPMT

-	 *

-	 * Returns the interest payment for a given period for an investment based on periodic, constant payments and a constant interest rate.

-	 *

-	 * @param	float	$rate	Interest rate per period

-	 * @param	int		$per	Period for which we want to find the interest

-	 * @param	int		$nper	Number of periods

-	 * @param	float	$pv		Present Value

-	 * @param	float	$fv		Future Value

-	 * @param	int		$type	Payment type: 0 = at the end of each period, 1 = at the beginning of each period

-	 * @return	float

-	 */

-	public static function PPMT($rate, $per, $nper, $pv, $fv = 0, $type = 0) {

-		$rate	= PHPExcel_Calculation_Functions::flattenSingleValue($rate);

-		$per	= (int) PHPExcel_Calculation_Functions::flattenSingleValue($per);

-		$nper	= (int) PHPExcel_Calculation_Functions::flattenSingleValue($nper);

-		$pv		= PHPExcel_Calculation_Functions::flattenSingleValue($pv);

-		$fv		= PHPExcel_Calculation_Functions::flattenSingleValue($fv);

-		$type	= (int) PHPExcel_Calculation_Functions::flattenSingleValue($type);

-

-		// Validate parameters

-		if ($type != 0 && $type != 1) {

-			return PHPExcel_Calculation_Functions::NaN();

-		}

-		if ($per <= 0 || $per > $nper) {

-			return PHPExcel_Calculation_Functions::VALUE();

-		}

-

-		// Calculate

-		$interestAndPrincipal = self::_interestAndPrincipal($rate, $per, $nper, $pv, $fv, $type);

-		return $interestAndPrincipal[1];

-	}	//	function PPMT()

-

-

-	public static function PRICE($settlement, $maturity, $rate, $yield, $redemption, $frequency, $basis=0) {

-		$settlement	= PHPExcel_Calculation_Functions::flattenSingleValue($settlement);

-		$maturity	= PHPExcel_Calculation_Functions::flattenSingleValue($maturity);

-		$rate		= (float) PHPExcel_Calculation_Functions::flattenSingleValue($rate);

-		$yield		= (float) PHPExcel_Calculation_Functions::flattenSingleValue($yield);

-		$redemption	= (float) PHPExcel_Calculation_Functions::flattenSingleValue($redemption);

-		$frequency	= (int) PHPExcel_Calculation_Functions::flattenSingleValue($frequency);

-		$basis		= (is_null($basis))	? 0 :	(int) PHPExcel_Calculation_Functions::flattenSingleValue($basis);

-

-		if (is_string($settlement = PHPExcel_Calculation_DateTime::_getDateValue($settlement))) {

-			return PHPExcel_Calculation_Functions::VALUE();

-		}

-		if (is_string($maturity = PHPExcel_Calculation_DateTime::_getDateValue($maturity))) {

-			return PHPExcel_Calculation_Functions::VALUE();

-		}

-

-		if (($settlement > $maturity) ||

-			(!self::_validFrequency($frequency)) ||

-			(($basis < 0) || ($basis > 4))) {

-			return PHPExcel_Calculation_Functions::NaN();

-		}

-

-		$dsc = self::COUPDAYSNC($settlement, $maturity, $frequency, $basis);

-		$e = self::COUPDAYS($settlement, $maturity, $frequency, $basis);

-		$n = self::COUPNUM($settlement, $maturity, $frequency, $basis);

-		$a = self::COUPDAYBS($settlement, $maturity, $frequency, $basis);

-

-		$baseYF	= 1.0 + ($yield / $frequency);

-		$rfp	= 100 * ($rate / $frequency);

-		$de	= $dsc / $e;

-

-		$result = $redemption / pow($baseYF, (--$n + $de));

-		for($k = 0; $k <= $n; ++$k) {

-			$result += $rfp / (pow($baseYF, ($k + $de)));

-		}

-		$result -= $rfp * ($a / $e);

-

-		return $result;

-	}	//	function PRICE()

-

-

-	/**

-	 * PRICEDISC

-	 *

-	 * Returns the price per $100 face value of a discounted security.

-	 *

-	 * @param	mixed	settlement	The security's settlement date.

-	 *								The security settlement date is the date after the issue date when the security is traded to the buyer.

-	 * @param	mixed	maturity	The security's maturity date.

-	 *								The maturity date is the date when the security expires.

-	 * @param	int		discount	The security's discount rate.

-	 * @param	int		redemption	The security's redemption value per $100 face value.

-	 * @param	int		basis		The type of day count to use.

-	 *										0 or omitted	US (NASD) 30/360

-	 *										1				Actual/actual

-	 *										2				Actual/360

-	 *										3				Actual/365

-	 *										4				European 30/360

-	 * @return	float

-	 */

-	public static function PRICEDISC($settlement, $maturity, $discount, $redemption, $basis=0) {

-		$settlement	= PHPExcel_Calculation_Functions::flattenSingleValue($settlement);

-		$maturity	= PHPExcel_Calculation_Functions::flattenSingleValue($maturity);

-		$discount	= (float) PHPExcel_Calculation_Functions::flattenSingleValue($discount);

-		$redemption	= (float) PHPExcel_Calculation_Functions::flattenSingleValue($redemption);

-		$basis		= (int) PHPExcel_Calculation_Functions::flattenSingleValue($basis);

-

-		//	Validate

-		if ((is_numeric($discount)) && (is_numeric($redemption)) && (is_numeric($basis))) {

-			if (($discount <= 0) || ($redemption <= 0)) {

-				return PHPExcel_Calculation_Functions::NaN();

-			}

-			$daysBetweenSettlementAndMaturity = PHPExcel_Calculation_DateTime::YEARFRAC($settlement, $maturity, $basis);

-			if (!is_numeric($daysBetweenSettlementAndMaturity)) {

-				//	return date error

-				return $daysBetweenSettlementAndMaturity;

-			}

-

-			return $redemption * (1 - $discount * $daysBetweenSettlementAndMaturity);

-		}

-		return PHPExcel_Calculation_Functions::VALUE();

-	}	//	function PRICEDISC()

-

-

-	/**

-	 * PRICEMAT

-	 *

-	 * Returns the price per $100 face value of a security that pays interest at maturity.

-	 *

-	 * @param	mixed	settlement	The security's settlement date.

-	 *								The security's settlement date is the date after the issue date when the security is traded to the buyer.

-	 * @param	mixed	maturity	The security's maturity date.

-	 *								The maturity date is the date when the security expires.

-	 * @param	mixed	issue		The security's issue date.

-	 * @param	int		rate		The security's interest rate at date of issue.

-	 * @param	int		yield		The security's annual yield.

-	 * @param	int		basis		The type of day count to use.

-	 *										0 or omitted	US (NASD) 30/360

-	 *										1				Actual/actual

-	 *										2				Actual/360

-	 *										3				Actual/365

-	 *										4				European 30/360

-	 * @return	float

-	 */

-	public static function PRICEMAT($settlement, $maturity, $issue, $rate, $yield, $basis=0) {

-		$settlement	= PHPExcel_Calculation_Functions::flattenSingleValue($settlement);

-		$maturity	= PHPExcel_Calculation_Functions::flattenSingleValue($maturity);

-		$issue		= PHPExcel_Calculation_Functions::flattenSingleValue($issue);

-		$rate		= PHPExcel_Calculation_Functions::flattenSingleValue($rate);

-		$yield		= PHPExcel_Calculation_Functions::flattenSingleValue($yield);

-		$basis		= (int) PHPExcel_Calculation_Functions::flattenSingleValue($basis);

-

-		//	Validate

-		if (is_numeric($rate) && is_numeric($yield)) {

-			if (($rate <= 0) || ($yield <= 0)) {

-				return PHPExcel_Calculation_Functions::NaN();

-			}

-			$daysPerYear = self::_daysPerYear(PHPExcel_Calculation_DateTime::YEAR($settlement),$basis);

-			if (!is_numeric($daysPerYear)) {

-				return $daysPerYear;

-			}

-			$daysBetweenIssueAndSettlement = PHPExcel_Calculation_DateTime::YEARFRAC($issue, $settlement, $basis);

-			if (!is_numeric($daysBetweenIssueAndSettlement)) {

-				//	return date error

-				return $daysBetweenIssueAndSettlement;

-			}

-			$daysBetweenIssueAndSettlement *= $daysPerYear;

-			$daysBetweenIssueAndMaturity = PHPExcel_Calculation_DateTime::YEARFRAC($issue, $maturity, $basis);

-			if (!is_numeric($daysBetweenIssueAndMaturity)) {

-				//	return date error

-				return $daysBetweenIssueAndMaturity;

-			}

-			$daysBetweenIssueAndMaturity *= $daysPerYear;

-			$daysBetweenSettlementAndMaturity = PHPExcel_Calculation_DateTime::YEARFRAC($settlement, $maturity, $basis);

-			if (!is_numeric($daysBetweenSettlementAndMaturity)) {

-				//	return date error

-				return $daysBetweenSettlementAndMaturity;

-			}

-			$daysBetweenSettlementAndMaturity *= $daysPerYear;

-

-			return ((100 + (($daysBetweenIssueAndMaturity / $daysPerYear) * $rate * 100)) /

-				   (1 + (($daysBetweenSettlementAndMaturity / $daysPerYear) * $yield)) -

-				   (($daysBetweenIssueAndSettlement / $daysPerYear) * $rate * 100));

-		}

-		return PHPExcel_Calculation_Functions::VALUE();

-	}	//	function PRICEMAT()

-

-

-	/**

-	 * PV

-	 *

-	 * Returns the Present Value of a cash flow with constant payments and interest rate (annuities).

-	 *

-	 * @param	float	$rate	Interest rate per period

-	 * @param	int		$nper	Number of periods

-	 * @param	float	$pmt	Periodic payment (annuity)

-	 * @param	float	$fv		Future Value

-	 * @param	int		$type	Payment type: 0 = at the end of each period, 1 = at the beginning of each period

-	 * @return	float

-	 */

-	public static function PV($rate = 0, $nper = 0, $pmt = 0, $fv = 0, $type = 0) {

-		$rate	= PHPExcel_Calculation_Functions::flattenSingleValue($rate);

-		$nper	= PHPExcel_Calculation_Functions::flattenSingleValue($nper);

-		$pmt	= PHPExcel_Calculation_Functions::flattenSingleValue($pmt);

-		$fv		= PHPExcel_Calculation_Functions::flattenSingleValue($fv);

-		$type	= PHPExcel_Calculation_Functions::flattenSingleValue($type);

-

-		// Validate parameters

-		if ($type != 0 && $type != 1) {

-			return PHPExcel_Calculation_Functions::NaN();

-		}

-

-		// Calculate

-		if (!is_null($rate) && $rate != 0) {

-			return (-$pmt * (1 + $rate * $type) * ((pow(1 + $rate, $nper) - 1) / $rate) - $fv) / pow(1 + $rate, $nper);

-		} else {

-			return -$fv - $pmt * $nper;

-		}

-	}	//	function PV()

-

-

-	/**

-	 * RATE

-	 *

-	 * Returns the interest rate per period of an annuity.

-	 * RATE is calculated by iteration and can have zero or more solutions.

-	 * If the successive results of RATE do not converge to within 0.0000001 after 20 iterations,

-	 * RATE returns the #NUM! error value.

-	 *

-	 * Excel Function:

-	 *		RATE(nper,pmt,pv[,fv[,type[,guess]]])

-	 *

-	 * @access	public

-	 * @category Financial Functions

-	 * @param	float	nper		The total number of payment periods in an annuity.

-	 * @param	float	pmt			The payment made each period and cannot change over the life

-	 *									of the annuity.

-	 *								Typically, pmt includes principal and interest but no other

-	 *									fees or taxes.

-	 * @param	float	pv			The present value - the total amount that a series of future

-	 *									payments is worth now.

-	 * @param	float	fv			The future value, or a cash balance you want to attain after

-	 *									the last payment is made. If fv is omitted, it is assumed

-	 *									to be 0 (the future value of a loan, for example, is 0).

-	 * @param	integer	type		A number 0 or 1 and indicates when payments are due:

-	 *										0 or omitted	At the end of the period.

-	 *										1				At the beginning of the period.

-	 * @param	float	guess		Your guess for what the rate will be.

-	 *									If you omit guess, it is assumed to be 10 percent.

-	 * @return	float

-	 **/

-	public static function RATE($nper, $pmt, $pv, $fv = 0.0, $type = 0, $guess = 0.1) {

-		$nper	= (int) PHPExcel_Calculation_Functions::flattenSingleValue($nper);

-		$pmt	= PHPExcel_Calculation_Functions::flattenSingleValue($pmt);

-		$pv		= PHPExcel_Calculation_Functions::flattenSingleValue($pv);

-		$fv		= (is_null($fv))	? 0.0	:	PHPExcel_Calculation_Functions::flattenSingleValue($fv);

-		$type	= (is_null($type))	? 0		:	(int) PHPExcel_Calculation_Functions::flattenSingleValue($type);

-		$guess	= (is_null($guess))	? 0.1	:	PHPExcel_Calculation_Functions::flattenSingleValue($guess);

-

-		$rate = $guess;

-		if (abs($rate) < FINANCIAL_PRECISION) {

-			$y = $pv * (1 + $nper * $rate) + $pmt * (1 + $rate * $type) * $nper + $fv;

-		} else {

-			$f = exp($nper * log(1 + $rate));

-			$y = $pv * $f + $pmt * (1 / $rate + $type) * ($f - 1) + $fv;

-		}

-		$y0 = $pv + $pmt * $nper + $fv;

-		$y1 = $pv * $f + $pmt * (1 / $rate + $type) * ($f - 1) + $fv;

-

-		// find root by secant method

-		$i  = $x0 = 0.0;

-		$x1 = $rate;

-		while ((abs($y0 - $y1) > FINANCIAL_PRECISION) && ($i < FINANCIAL_MAX_ITERATIONS)) {

-			$rate = ($y1 * $x0 - $y0 * $x1) / ($y1 - $y0);

-			$x0 = $x1;

-			$x1 = $rate;

-			if (($nper * abs($pmt)) > ($pv - $fv))

-				$x1 = abs($x1);

-

-			if (abs($rate) < FINANCIAL_PRECISION) {

-				$y = $pv * (1 + $nper * $rate) + $pmt * (1 + $rate * $type) * $nper + $fv;

-			} else {

-				$f = exp($nper * log(1 + $rate));

-				$y = $pv * $f + $pmt * (1 / $rate + $type) * ($f - 1) + $fv;

-			}

-

-			$y0 = $y1;

-			$y1 = $y;

-			++$i;

-		}

-		return $rate;

-	}	//	function RATE()

-

-

-	/**

-	 * RECEIVED

-	 *

-	 * Returns the price per $100 face value of a discounted security.

-	 *

-	 * @param	mixed	settlement	The security's settlement date.

-	 *								The security settlement date is the date after the issue date when the security is traded to the buyer.

-	 * @param	mixed	maturity	The security's maturity date.

-	 *								The maturity date is the date when the security expires.

-	 * @param	int		investment	The amount invested in the security.

-	 * @param	int		discount	The security's discount rate.

-	 * @param	int		basis		The type of day count to use.

-	 *										0 or omitted	US (NASD) 30/360

-	 *										1				Actual/actual

-	 *										2				Actual/360

-	 *										3				Actual/365

-	 *										4				European 30/360

-	 * @return	float

-	 */

-	public static function RECEIVED($settlement, $maturity, $investment, $discount, $basis=0) {

-		$settlement	= PHPExcel_Calculation_Functions::flattenSingleValue($settlement);

-		$maturity	= PHPExcel_Calculation_Functions::flattenSingleValue($maturity);

-		$investment	= (float) PHPExcel_Calculation_Functions::flattenSingleValue($investment);

-		$discount	= (float) PHPExcel_Calculation_Functions::flattenSingleValue($discount);

-		$basis		= (int) PHPExcel_Calculation_Functions::flattenSingleValue($basis);

-

-		//	Validate

-		if ((is_numeric($investment)) && (is_numeric($discount)) && (is_numeric($basis))) {

-			if (($investment <= 0) || ($discount <= 0)) {

-				return PHPExcel_Calculation_Functions::NaN();

-			}

-			$daysBetweenSettlementAndMaturity = PHPExcel_Calculation_DateTime::YEARFRAC($settlement, $maturity, $basis);

-			if (!is_numeric($daysBetweenSettlementAndMaturity)) {

-				//	return date error

-				return $daysBetweenSettlementAndMaturity;

-			}

-

-			return $investment / ( 1 - ($discount * $daysBetweenSettlementAndMaturity));

-		}

-		return PHPExcel_Calculation_Functions::VALUE();

-	}	//	function RECEIVED()

-

-

-	/**

-	 * SLN

-	 *

-	 * Returns the straight-line depreciation of an asset for one period

-	 *

-	 * @param	cost		Initial cost of the asset

-	 * @param	salvage		Value at the end of the depreciation

-	 * @param	life		Number of periods over which the asset is depreciated

-	 * @return	float

-	 */

-	public static function SLN($cost, $salvage, $life) {

-		$cost		= PHPExcel_Calculation_Functions::flattenSingleValue($cost);

-		$salvage	= PHPExcel_Calculation_Functions::flattenSingleValue($salvage);

-		$life		= PHPExcel_Calculation_Functions::flattenSingleValue($life);

-

-		// Calculate

-		if ((is_numeric($cost)) && (is_numeric($salvage)) && (is_numeric($life))) {

-			if ($life < 0) {

-				return PHPExcel_Calculation_Functions::NaN();

-			}

-			return ($cost - $salvage) / $life;

-		}

-		return PHPExcel_Calculation_Functions::VALUE();

-	}	//	function SLN()

-

-

-	/**

-	 * SYD

-	 *

-	 * Returns the sum-of-years' digits depreciation of an asset for a specified period.

-	 *

-	 * @param	cost		Initial cost of the asset

-	 * @param	salvage		Value at the end of the depreciation

-	 * @param	life		Number of periods over which the asset is depreciated

-	 * @param	period		Period

-	 * @return	float

-	 */

-	public static function SYD($cost, $salvage, $life, $period) {

-		$cost		= PHPExcel_Calculation_Functions::flattenSingleValue($cost);

-		$salvage	= PHPExcel_Calculation_Functions::flattenSingleValue($salvage);

-		$life		= PHPExcel_Calculation_Functions::flattenSingleValue($life);

-		$period		= PHPExcel_Calculation_Functions::flattenSingleValue($period);

-

-		// Calculate

-		if ((is_numeric($cost)) && (is_numeric($salvage)) && (is_numeric($life)) && (is_numeric($period))) {

-			if (($life < 1) || ($period > $life)) {

-				return PHPExcel_Calculation_Functions::NaN();

-			}

-			return (($cost - $salvage) * ($life - $period + 1) * 2) / ($life * ($life + 1));

-		}

-		return PHPExcel_Calculation_Functions::VALUE();

-	}	//	function SYD()

-

-

-	/**

-	 * TBILLEQ

-	 *

-	 * Returns the bond-equivalent yield for a Treasury bill.

-	 *

-	 * @param	mixed	settlement	The Treasury bill's settlement date.

-	 *								The Treasury bill's settlement date is the date after the issue date when the Treasury bill is traded to the buyer.

-	 * @param	mixed	maturity	The Treasury bill's maturity date.

-	 *								The maturity date is the date when the Treasury bill expires.

-	 * @param	int		discount	The Treasury bill's discount rate.

-	 * @return	float

-	 */

-	public static function TBILLEQ($settlement, $maturity, $discount) {

-		$settlement	= PHPExcel_Calculation_Functions::flattenSingleValue($settlement);

-		$maturity	= PHPExcel_Calculation_Functions::flattenSingleValue($maturity);

-		$discount	= PHPExcel_Calculation_Functions::flattenSingleValue($discount);

-

-		//	Use TBILLPRICE for validation

-		$testValue = self::TBILLPRICE($settlement, $maturity, $discount);

-		if (is_string($testValue)) {

-			return $testValue;

-		}

-

-		if (is_string($maturity = PHPExcel_Calculation_DateTime::_getDateValue($maturity))) {

-			return PHPExcel_Calculation_Functions::VALUE();

-		}

-

-		if (PHPExcel_Calculation_Functions::getCompatibilityMode() == PHPExcel_Calculation_Functions::COMPATIBILITY_OPENOFFICE) {

-			++$maturity;

-			$daysBetweenSettlementAndMaturity = PHPExcel_Calculation_DateTime::YEARFRAC($settlement, $maturity) * 360;

-		} else {

-			$daysBetweenSettlementAndMaturity = (PHPExcel_Calculation_DateTime::_getDateValue($maturity) - PHPExcel_Calculation_DateTime::_getDateValue($settlement));

-		}

-

-		return (365 * $discount) / (360 - $discount * $daysBetweenSettlementAndMaturity);

-	}	//	function TBILLEQ()

-

-

-	/**

-	 * TBILLPRICE

-	 *

-	 * Returns the yield for a Treasury bill.

-	 *

-	 * @param	mixed	settlement	The Treasury bill's settlement date.

-	 *								The Treasury bill's settlement date is the date after the issue date when the Treasury bill is traded to the buyer.

-	 * @param	mixed	maturity	The Treasury bill's maturity date.

-	 *								The maturity date is the date when the Treasury bill expires.

-	 * @param	int		discount	The Treasury bill's discount rate.

-	 * @return	float

-	 */

-	public static function TBILLPRICE($settlement, $maturity, $discount) {

-		$settlement	= PHPExcel_Calculation_Functions::flattenSingleValue($settlement);

-		$maturity	= PHPExcel_Calculation_Functions::flattenSingleValue($maturity);

-		$discount	= PHPExcel_Calculation_Functions::flattenSingleValue($discount);

-

-		if (is_string($maturity = PHPExcel_Calculation_DateTime::_getDateValue($maturity))) {

-			return PHPExcel_Calculation_Functions::VALUE();

-		}

-

-		//	Validate

-		if (is_numeric($discount)) {

-			if ($discount <= 0) {

-				return PHPExcel_Calculation_Functions::NaN();

-			}

-

-			if (PHPExcel_Calculation_Functions::getCompatibilityMode() == PHPExcel_Calculation_Functions::COMPATIBILITY_OPENOFFICE) {

-				++$maturity;

-				$daysBetweenSettlementAndMaturity = PHPExcel_Calculation_DateTime::YEARFRAC($settlement, $maturity) * 360;

-				if (!is_numeric($daysBetweenSettlementAndMaturity)) {

-					//	return date error

-					return $daysBetweenSettlementAndMaturity;

-				}

-			} else {

-				$daysBetweenSettlementAndMaturity = (PHPExcel_Calculation_DateTime::_getDateValue($maturity) - PHPExcel_Calculation_DateTime::_getDateValue($settlement));

-			}

-

-			if ($daysBetweenSettlementAndMaturity > 360) {

-				return PHPExcel_Calculation_Functions::NaN();

-			}

-

-			$price = 100 * (1 - (($discount * $daysBetweenSettlementAndMaturity) / 360));

-			if ($price <= 0) {

-				return PHPExcel_Calculation_Functions::NaN();

-			}

-			return $price;

-		}

-		return PHPExcel_Calculation_Functions::VALUE();

-	}	//	function TBILLPRICE()

-

-

-	/**

-	 * TBILLYIELD

-	 *

-	 * Returns the yield for a Treasury bill.

-	 *

-	 * @param	mixed	settlement	The Treasury bill's settlement date.

-	 *								The Treasury bill's settlement date is the date after the issue date when the Treasury bill is traded to the buyer.

-	 * @param	mixed	maturity	The Treasury bill's maturity date.

-	 *								The maturity date is the date when the Treasury bill expires.

-	 * @param	int		price		The Treasury bill's price per $100 face value.

-	 * @return	float

-	 */

-	public static function TBILLYIELD($settlement, $maturity, $price) {

-		$settlement	= PHPExcel_Calculation_Functions::flattenSingleValue($settlement);

-		$maturity	= PHPExcel_Calculation_Functions::flattenSingleValue($maturity);

-		$price		= PHPExcel_Calculation_Functions::flattenSingleValue($price);

-

-		//	Validate

-		if (is_numeric($price)) {

-			if ($price <= 0) {

-				return PHPExcel_Calculation_Functions::NaN();

-			}

-

-			if (PHPExcel_Calculation_Functions::getCompatibilityMode() == PHPExcel_Calculation_Functions::COMPATIBILITY_OPENOFFICE) {

-				++$maturity;

-				$daysBetweenSettlementAndMaturity = PHPExcel_Calculation_DateTime::YEARFRAC($settlement, $maturity) * 360;

-				if (!is_numeric($daysBetweenSettlementAndMaturity)) {

-					//	return date error

-					return $daysBetweenSettlementAndMaturity;

-				}

-			} else {

-				$daysBetweenSettlementAndMaturity = (PHPExcel_Calculation_DateTime::_getDateValue($maturity) - PHPExcel_Calculation_DateTime::_getDateValue($settlement));

-			}

-

-			if ($daysBetweenSettlementAndMaturity > 360) {

-				return PHPExcel_Calculation_Functions::NaN();

-			}

-

-			return ((100 - $price) / $price) * (360 / $daysBetweenSettlementAndMaturity);

-		}

-		return PHPExcel_Calculation_Functions::VALUE();

-	}	//	function TBILLYIELD()

-

-

-	public static function XIRR($values, $dates, $guess = 0.1) {

-		if ((!is_array($values)) && (!is_array($dates))) return PHPExcel_Calculation_Functions::VALUE();

-		$values	= PHPExcel_Calculation_Functions::flattenArray($values);

-		$dates	= PHPExcel_Calculation_Functions::flattenArray($dates);

-		$guess = PHPExcel_Calculation_Functions::flattenSingleValue($guess);

-		if (count($values) != count($dates)) return PHPExcel_Calculation_Functions::NaN();

-

-		// create an initial range, with a root somewhere between 0 and guess

-		$x1 = 0.0;

-		$x2 = $guess;

-		$f1 = self::XNPV($x1, $values, $dates);

-		$f2 = self::XNPV($x2, $values, $dates);

-		for ($i = 0; $i < FINANCIAL_MAX_ITERATIONS; ++$i) {

-			if (($f1 * $f2) < 0.0) break;

-			if (abs($f1) < abs($f2)) {

-				$f1 = self::XNPV($x1 += 1.6 * ($x1 - $x2), $values, $dates);

-			} else {

-				$f2 = self::XNPV($x2 += 1.6 * ($x2 - $x1), $values, $dates);

-			}

-		}

-		if (($f1 * $f2) > 0.0) return PHPExcel_Calculation_Functions::VALUE();

-

-		$f = self::XNPV($x1, $values, $dates);

-		if ($f < 0.0) {

-			$rtb = $x1;

-			$dx = $x2 - $x1;

-		} else {

-			$rtb = $x2;

-			$dx = $x1 - $x2;

-		}

-

-		for ($i = 0;  $i < FINANCIAL_MAX_ITERATIONS; ++$i) {

-			$dx *= 0.5;

-			$x_mid = $rtb + $dx;

-			$f_mid = self::XNPV($x_mid, $values, $dates);

-			if ($f_mid <= 0.0) $rtb = $x_mid;

-			if ((abs($f_mid) < FINANCIAL_PRECISION) || (abs($dx) < FINANCIAL_PRECISION)) return $x_mid;

-		}

-		return PHPExcel_Calculation_Functions::VALUE();

-	}

-

-

-	/**

-	 * XNPV

-	 *

-	 * Returns the net present value for a schedule of cash flows that is not necessarily periodic.

-	 * To calculate the net present value for a series of cash flows that is periodic, use the NPV function.

-	 *

-	 * Excel Function:

-	 *		=XNPV(rate,values,dates)

-	 *

-	 * @param	float			$rate		The discount rate to apply to the cash flows.

-	 * @param	array of float	$values		A series of cash flows that corresponds to a schedule of payments in dates. The first payment is optional and corresponds to a cost or payment that occurs at the beginning of the investment. If the first value is a cost or payment, it must be a negative value. All succeeding payments are discounted based on a 365-day year. The series of values must contain at least one positive value and one negative value.

-	 * @param	array of mixed	$dates		A schedule of payment dates that corresponds to the cash flow payments. The first payment date indicates the beginning of the schedule of payments. All other dates must be later than this date, but they may occur in any order.

-	 * @return	float

-	 */

-	public static function XNPV($rate, $values, $dates) {

-		$rate = PHPExcel_Calculation_Functions::flattenSingleValue($rate);

-		if (!is_numeric($rate)) return PHPExcel_Calculation_Functions::VALUE();

-		if ((!is_array($values)) || (!is_array($dates))) return PHPExcel_Calculation_Functions::VALUE();

-		$values	= PHPExcel_Calculation_Functions::flattenArray($values);

-		$dates	= PHPExcel_Calculation_Functions::flattenArray($dates);

-		$valCount = count($values);

-		if ($valCount != count($dates)) return PHPExcel_Calculation_Functions::NaN();

-		if ((min($values) > 0) || (max($values) < 0)) return PHPExcel_Calculation_Functions::VALUE();

-

-		$xnpv = 0.0;

-		for ($i = 0; $i < $valCount; ++$i) {

-			if (!is_numeric($values[$i])) return PHPExcel_Calculation_Functions::VALUE();

-			$xnpv += $values[$i] / pow(1 + $rate, PHPExcel_Calculation_DateTime::DATEDIF($dates[0],$dates[$i],'d') / 365);

-		}

-		return (is_finite($xnpv)) ? $xnpv : PHPExcel_Calculation_Functions::VALUE();

-	}	//	function XNPV()

-

-

-	/**

-	 * YIELDDISC

-	 *

-	 * Returns the annual yield of a security that pays interest at maturity.

-	 *

-	 * @param	mixed	settlement	The security's settlement date.

-	 *								The security's settlement date is the date after the issue date when the security is traded to the buyer.

-	 * @param	mixed	maturity	The security's maturity date.

-	 *								The maturity date is the date when the security expires.

-	 * @param	int		price		The security's price per $100 face value.

-	 * @param	int		redemption	The security's redemption value per $100 face value.

-	 * @param	int		basis		The type of day count to use.

-	 *										0 or omitted	US (NASD) 30/360

-	 *										1				Actual/actual

-	 *										2				Actual/360

-	 *										3				Actual/365

-	 *										4				European 30/360

-	 * @return	float

-	 */

-	public static function YIELDDISC($settlement, $maturity, $price, $redemption, $basis=0) {

-		$settlement	= PHPExcel_Calculation_Functions::flattenSingleValue($settlement);

-		$maturity	= PHPExcel_Calculation_Functions::flattenSingleValue($maturity);

-		$price		= PHPExcel_Calculation_Functions::flattenSingleValue($price);

-		$redemption	= PHPExcel_Calculation_Functions::flattenSingleValue($redemption);

-		$basis		= (int) PHPExcel_Calculation_Functions::flattenSingleValue($basis);

-

-		//	Validate

-		if (is_numeric($price) && is_numeric($redemption)) {

-			if (($price <= 0) || ($redemption <= 0)) {

-				return PHPExcel_Calculation_Functions::NaN();

-			}

-			$daysPerYear = self::_daysPerYear(PHPExcel_Calculation_DateTime::YEAR($settlement),$basis);

-			if (!is_numeric($daysPerYear)) {

-				return $daysPerYear;

-			}

-			$daysBetweenSettlementAndMaturity = PHPExcel_Calculation_DateTime::YEARFRAC($settlement, $maturity,$basis);

-			if (!is_numeric($daysBetweenSettlementAndMaturity)) {

-				//	return date error

-				return $daysBetweenSettlementAndMaturity;

-			}

-			$daysBetweenSettlementAndMaturity *= $daysPerYear;

-

-			return (($redemption - $price) / $price) * ($daysPerYear / $daysBetweenSettlementAndMaturity);

-		}

-		return PHPExcel_Calculation_Functions::VALUE();

-	}	//	function YIELDDISC()

-

-

-	/**

-	 * YIELDMAT

-	 *

-	 * Returns the annual yield of a security that pays interest at maturity.

-	 *

-	 * @param	mixed	settlement	The security's settlement date.

-	 *								The security's settlement date is the date after the issue date when the security is traded to the buyer.

-	 * @param	mixed	maturity	The security's maturity date.

-	 *								The maturity date is the date when the security expires.

-	 * @param	mixed	issue		The security's issue date.

-	 * @param	int		rate		The security's interest rate at date of issue.

-	 * @param	int		price		The security's price per $100 face value.

-	 * @param	int		basis		The type of day count to use.

-	 *										0 or omitted	US (NASD) 30/360

-	 *										1				Actual/actual

-	 *										2				Actual/360

-	 *										3				Actual/365

-	 *										4				European 30/360

-	 * @return	float

-	 */

-	public static function YIELDMAT($settlement, $maturity, $issue, $rate, $price, $basis=0) {

-		$settlement	= PHPExcel_Calculation_Functions::flattenSingleValue($settlement);

-		$maturity	= PHPExcel_Calculation_Functions::flattenSingleValue($maturity);

-		$issue		= PHPExcel_Calculation_Functions::flattenSingleValue($issue);

-		$rate		= PHPExcel_Calculation_Functions::flattenSingleValue($rate);

-		$price		= PHPExcel_Calculation_Functions::flattenSingleValue($price);

-		$basis		= (int) PHPExcel_Calculation_Functions::flattenSingleValue($basis);

-

-		//	Validate

-		if (is_numeric($rate) && is_numeric($price)) {

-			if (($rate <= 0) || ($price <= 0)) {

-				return PHPExcel_Calculation_Functions::NaN();

-			}

-			$daysPerYear = self::_daysPerYear(PHPExcel_Calculation_DateTime::YEAR($settlement),$basis);

-			if (!is_numeric($daysPerYear)) {

-				return $daysPerYear;

-			}

-			$daysBetweenIssueAndSettlement = PHPExcel_Calculation_DateTime::YEARFRAC($issue, $settlement, $basis);

-			if (!is_numeric($daysBetweenIssueAndSettlement)) {

-				//	return date error

-				return $daysBetweenIssueAndSettlement;

-			}

-			$daysBetweenIssueAndSettlement *= $daysPerYear;

-			$daysBetweenIssueAndMaturity = PHPExcel_Calculation_DateTime::YEARFRAC($issue, $maturity, $basis);

-			if (!is_numeric($daysBetweenIssueAndMaturity)) {

-				//	return date error

-				return $daysBetweenIssueAndMaturity;

-			}

-			$daysBetweenIssueAndMaturity *= $daysPerYear;

-			$daysBetweenSettlementAndMaturity = PHPExcel_Calculation_DateTime::YEARFRAC($settlement, $maturity, $basis);

-			if (!is_numeric($daysBetweenSettlementAndMaturity)) {

-				//	return date error

-				return $daysBetweenSettlementAndMaturity;

-			}

-			$daysBetweenSettlementAndMaturity *= $daysPerYear;

-

-			return ((1 + (($daysBetweenIssueAndMaturity / $daysPerYear) * $rate) - (($price / 100) + (($daysBetweenIssueAndSettlement / $daysPerYear) * $rate))) /

-				   (($price / 100) + (($daysBetweenIssueAndSettlement / $daysPerYear) * $rate))) *

-				   ($daysPerYear / $daysBetweenSettlementAndMaturity);

-		}

-		return PHPExcel_Calculation_Functions::VALUE();

-	}	//	function YIELDMAT()

-

-}	//	class PHPExcel_Calculation_Financial

diff --git a/admin/survey/excel/PHPExcel/Calculation/FormulaParser.php b/admin/survey/excel/PHPExcel/Calculation/FormulaParser.php
deleted file mode 100644
index bdc66ca..0000000
--- a/admin/survey/excel/PHPExcel/Calculation/FormulaParser.php
+++ /dev/null
@@ -1,614 +0,0 @@
-<?php

-/**

- * PHPExcel

- *

- * Copyright (c) 2006 - 2012 PHPExcel

- *

- * This library is free software; you can redistribute it and/or

- * modify it under the terms of the GNU Lesser General Public

- * License as published by the Free Software Foundation; either

- * version 2.1 of the License, or (at your option) any later version.

- *

- * This library is distributed in the hope that it will be useful,

- * but WITHOUT ANY WARRANTY; without even the implied warranty of

- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

- * Lesser General Public License for more details.

- *

- * You should have received a copy of the GNU Lesser General Public

- * License along with this library; if not, write to the Free Software

- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA

- *

- * @category   PHPExcel

- * @package    PHPExcel_Calculation

- * @copyright  Copyright (c) 2006 - 2012 PHPExcel (http://www.codeplex.com/PHPExcel)

- * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL

- * @version    1.7.8, 2012-10-12

- */

-

-

-/*

-PARTLY BASED ON:

-	Copyright (c) 2007 E. W. Bachtal, Inc.

-

-	Permission is hereby granted, free of charge, to any person obtaining a copy of this software

-	and associated documentation files (the "Software"), to deal in the Software without restriction,

-	including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense,

-	and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so,

-	subject to the following conditions:

-

-	  The above copyright notice and this permission notice shall be included in all copies or substantial

-	  portions of the Software.

-

-	The software is provided "as is", without warranty of any kind, express or implied, including but not

-	limited to the warranties of merchantability, fitness for a particular purpose and noninfringement. In

-	no event shall the authors or copyright holders be liable for any claim, damages or other liability,

-	whether in an action of contract, tort or otherwise, arising from, out of or in connection with the

-	software or the use or other dealings in the software.

-

-	http://ewbi.blogs.com/develops/2007/03/excel_formula_p.html

-	http://ewbi.blogs.com/develops/2004/12/excel_formula_p.html

-*/

-

-/**

- * PHPExcel_Calculation_FormulaParser

- *

- * @category   PHPExcel

- * @package    PHPExcel_Calculation

- * @copyright  Copyright (c) 2006 - 2012 PHPExcel (http://www.codeplex.com/PHPExcel)

- */

-class PHPExcel_Calculation_FormulaParser {

-	/* Character constants */

-	const QUOTE_DOUBLE  = '"';

-	const QUOTE_SINGLE  = '\'';

-	const BRACKET_CLOSE = ']';

-	const BRACKET_OPEN  = '[';

-	const BRACE_OPEN    = '{';

-	const BRACE_CLOSE   = '}';

-	const PAREN_OPEN    = '(';

-	const PAREN_CLOSE   = ')';

-	const SEMICOLON     = ';';

-	const WHITESPACE    = ' ';

-	const COMMA         = ',';

-	const ERROR_START   = '#';

-

-	const OPERATORS_SN 			= "+-";

-	const OPERATORS_INFIX 		= "+-*/^&=><";

-	const OPERATORS_POSTFIX 	= "%";

-

-	/**

-	 * Formula

-	 *

-	 * @var string

-	 */

-	private $_formula;

-

-	/**

-	 * Tokens

-	 *

-	 * @var PHPExcel_Calculation_FormulaToken[]

-	 */

-	private $_tokens = array();

-

-    /**

-     * Create a new PHPExcel_Calculation_FormulaParser

-     *

-     * @param 	string		$pFormula	Formula to parse

-     * @throws 	Exception

-     */

-    public function __construct($pFormula = '')

-    {

-    	// Check parameters

-    	if (is_null($pFormula)) {

-    		throw new Exception("Invalid parameter passed: formula");

-    	}

-

-    	// Initialise values

-    	$this->_formula = trim($pFormula);

-    	// Parse!

-    	$this->_parseToTokens();

-    }

-

-    /**

-     * Get Formula

-     *

-     * @return string

-     */

-    public function getFormula() {

-    	return $this->_formula;

-    }

-

-    /**

-     * Get Token

-     *

-     * @param 	int		$pId	Token id

-     * @return	string

-     * @throws  Exception

-     */

-    public function getToken($pId = 0) {

-    	if (isset($this->_tokens[$pId])) {

-    		return $this->_tokens[$pId];

-    	} else {

-    		throw new Exception("Token with id $pId does not exist.");

-    	}

-    }

-

-    /**

-     * Get Token count

-     *

-     * @return string

-     */

-    public function getTokenCount() {

-    	return count($this->_tokens);

-    }

-

-    /**

-     * Get Tokens

-     *

-     * @return PHPExcel_Calculation_FormulaToken[]

-     */

-    public function getTokens() {

-    	return $this->_tokens;

-    }

-

-    /**

-     * Parse to tokens

-     */

-    private function _parseToTokens() {

-		// No attempt is made to verify formulas; assumes formulas are derived from Excel, where

-		// they can only exist if valid; stack overflows/underflows sunk as nulls without exceptions.

-

-		// Check if the formula has a valid starting =

-		$formulaLength = strlen($this->_formula);

-		if ($formulaLength < 2 || $this->_formula{0} != '=') return;

-

-		// Helper variables

-		$tokens1	= $tokens2 	= $stack = array();

-		$inString	= $inPath 	= $inRange 	= $inError = false;

-		$token		= $previousToken	= $nextToken	= null;

-

-		$index	= 1;

-		$value	= '';

-

-		$ERRORS 			= array("#NULL!", "#DIV/0!", "#VALUE!", "#REF!", "#NAME?", "#NUM!", "#N/A");

-		$COMPARATORS_MULTI 	= array(">=", "<=", "<>");

-

-		while ($index < $formulaLength) {

-			// state-dependent character evaluation (order is important)

-

-			// double-quoted strings

-			// embeds are doubled

-			// end marks token

-			if ($inString) {

-				if ($this->_formula{$index} == PHPExcel_Calculation_FormulaParser::QUOTE_DOUBLE) {

-					if ((($index + 2) <= $formulaLength) && ($this->_formula{$index + 1} == PHPExcel_Calculation_FormulaParser::QUOTE_DOUBLE)) {

-						$value .= PHPExcel_Calculation_FormulaParser::QUOTE_DOUBLE;

-						++$index;

-					} else {

-						$inString = false;

-						$tokens1[] = new PHPExcel_Calculation_FormulaToken($value, PHPExcel_Calculation_FormulaToken::TOKEN_TYPE_OPERAND, PHPExcel_Calculation_FormulaToken::TOKEN_SUBTYPE_TEXT);

-						$value = "";

-					}

-				} else {

-					$value .= $this->_formula{$index};

-				}

-				++$index;

-				continue;

-			}

-

-			// single-quoted strings (links)

-			// embeds are double

-			// end does not mark a token

-			if ($inPath) {

-				if ($this->_formula{$index} == PHPExcel_Calculation_FormulaParser::QUOTE_SINGLE) {

-					if ((($index + 2) <= $formulaLength) && ($this->_formula{$index + 1} == PHPExcel_Calculation_FormulaParser::QUOTE_SINGLE)) {

-						$value .= PHPExcel_Calculation_FormulaParser::QUOTE_SINGLE;

-						++$index;

-					} else {

-						$inPath = false;

-					}

-				} else {

-					$value .= $this->_formula{$index};

-				}

-				++$index;

-				continue;

-			}

-

-			// bracked strings (R1C1 range index or linked workbook name)

-			// no embeds (changed to "()" by Excel)

-			// end does not mark a token

-			if ($inRange) {

-				if ($this->_formula{$index} == PHPExcel_Calculation_FormulaParser::BRACKET_CLOSE) {

-					$inRange = false;

-				}

-				$value .= $this->_formula{$index};

-				++$index;

-				continue;

-			}

-

-			// error values

-			// end marks a token, determined from absolute list of values

-			if ($inError) {

-				$value .= $this->_formula{$index};

-				++$index;

-				if (in_array($value, $ERRORS)) {

-					$inError = false;

-					$tokens1[] = new PHPExcel_Calculation_FormulaToken($value, PHPExcel_Calculation_FormulaToken::TOKEN_TYPE_OPERAND, PHPExcel_Calculation_FormulaToken::TOKEN_SUBTYPE_ERROR);

-					$value = "";

-				}

-				continue;

-			}

-

-			// scientific notation check

-			if (strpos(PHPExcel_Calculation_FormulaParser::OPERATORS_SN, $this->_formula{$index}) !== false) {

-				if (strlen($value) > 1) {

-					if (preg_match("/^[1-9]{1}(\.[0-9]+)?E{1}$/", $this->_formula{$index}) != 0) {

-						$value .= $this->_formula{$index};

-						++$index;

-						continue;

-					}

-				}

-			}

-

-			// independent character evaluation (order not important)

-

-			// establish state-dependent character evaluations

-			if ($this->_formula{$index} == PHPExcel_Calculation_FormulaParser::QUOTE_DOUBLE) {

-				if (strlen($value > 0)) {  // unexpected

-					$tokens1[] = new PHPExcel_Calculation_FormulaToken($value, PHPExcel_Calculation_FormulaToken::TOKEN_TYPE_UNKNOWN);

-					$value = "";

-				}

-				$inString = true;

-				++$index;

-				continue;

- 			}

-

-			if ($this->_formula{$index} == PHPExcel_Calculation_FormulaParser::QUOTE_SINGLE) {

-				if (strlen($value) > 0) { // unexpected

-					$tokens1[] = new PHPExcel_Calculation_FormulaToken($value, PHPExcel_Calculation_FormulaToken::TOKEN_TYPE_UNKNOWN);

-					$value = "";

-				}

-				$inPath = true;

-				++$index;

-				continue;

-			}

-

-			if ($this->_formula{$index} == PHPExcel_Calculation_FormulaParser::BRACKET_OPEN) {

-				$inRange = true;

-				$value .= PHPExcel_Calculation_FormulaParser::BRACKET_OPEN;

-				++$index;

-				continue;

-			}

-

-			if ($this->_formula{$index} == PHPExcel_Calculation_FormulaParser::ERROR_START) {

-				if (strlen($value) > 0) { // unexpected

-					$tokens1[] = new PHPExcel_Calculation_FormulaToken($value, PHPExcel_Calculation_FormulaToken::TOKEN_TYPE_UNKNOWN);

-					$value = "";

-				}

-				$inError = true;

-				$value .= PHPExcel_Calculation_FormulaParser::ERROR_START;

-				++$index;

-				continue;

-			}

-

-			// mark start and end of arrays and array rows

-			if ($this->_formula{$index} == PHPExcel_Calculation_FormulaParser::BRACE_OPEN) {

-				if (strlen($value) > 0) { // unexpected

-					$tokens1[] = new PHPExcel_Calculation_FormulaToken($value, PHPExcel_Calculation_FormulaToken::TOKEN_TYPE_UNKNOWN);

-					$value = "";

-				}

-

-				$tmp = new PHPExcel_Calculation_FormulaToken("ARRAY", PHPExcel_Calculation_FormulaToken::TOKEN_TYPE_FUNCTION, PHPExcel_Calculation_FormulaToken::TOKEN_SUBTYPE_START);

-				$tokens1[] = $tmp;

-				$stack[] = clone $tmp;

-

-				$tmp = new PHPExcel_Calculation_FormulaToken("ARRAYROW", PHPExcel_Calculation_FormulaToken::TOKEN_TYPE_FUNCTION, PHPExcel_Calculation_FormulaToken::TOKEN_SUBTYPE_START);

-				$tokens1[] = $tmp;

-				$stack[] = clone $tmp;

-

-				++$index;

-				continue;

-			}

-

-			if ($this->_formula{$index} == PHPExcel_Calculation_FormulaParser::SEMICOLON) {

-				if (strlen($value) > 0) {

-					$tokens1[] = new PHPExcel_Calculation_FormulaToken($value, PHPExcel_Calculation_FormulaToken::TOKEN_TYPE_OPERAND);

-					$value = "";

-				}

-

-				$tmp = array_pop($stack);

-				$tmp->setValue("");

-				$tmp->setTokenSubType(PHPExcel_Calculation_FormulaToken::TOKEN_SUBTYPE_STOP);

-				$tokens1[] = $tmp;

-

-				$tmp = new PHPExcel_Calculation_FormulaToken(",", PHPExcel_Calculation_FormulaToken::TOKEN_TYPE_ARGUMENT);

-				$tokens1[] = $tmp;

-

-				$tmp = new PHPExcel_Calculation_FormulaToken("ARRAYROW", PHPExcel_Calculation_FormulaToken::TOKEN_TYPE_FUNCTION, PHPExcel_Calculation_FormulaToken::TOKEN_SUBTYPE_START);

-				$tokens1[] = $tmp;

-				$stack[] = clone $tmp;

-

-				++$index;

-				continue;

-			}

-

-			if ($this->_formula{$index} == PHPExcel_Calculation_FormulaParser::BRACE_CLOSE) {

-				if (strlen($value) > 0) {

-					$tokens1[] = new PHPExcel_Calculation_FormulaToken($value, PHPExcel_Calculation_FormulaToken::TOKEN_TYPE_OPERAND);

-					$value = "";

-				}

-

-				$tmp = array_pop($stack);

-				$tmp->setValue("");

-				$tmp->setTokenSubType(PHPExcel_Calculation_FormulaToken::TOKEN_SUBTYPE_STOP);

-				$tokens1[] = $tmp;

-

-				$tmp = array_pop($stack);

-				$tmp->setValue("");

-				$tmp->setTokenSubType(PHPExcel_Calculation_FormulaToken::TOKEN_SUBTYPE_STOP);

-				$tokens1[] = $tmp;

-

-				++$index;

-				continue;

-			}

-

-			// trim white-space

-			if ($this->_formula{$index} == PHPExcel_Calculation_FormulaParser::WHITESPACE) {

-				if (strlen($value) > 0) {

-					$tokens1[] = new PHPExcel_Calculation_FormulaToken($value, PHPExcel_Calculation_FormulaToken::TOKEN_TYPE_OPERAND);

-					$value = "";

-				}

-				$tokens1[] = new PHPExcel_Calculation_FormulaToken("", PHPExcel_Calculation_FormulaToken::TOKEN_TYPE_WHITESPACE);

-				++$index;

-				while (($this->_formula{$index} == PHPExcel_Calculation_FormulaParser::WHITESPACE) && ($index < $formulaLength)) {

-					++$index;

-				}

-				continue;

-			}

-

-			// multi-character comparators

-			if (($index + 2) <= $formulaLength) {

-				if (in_array(substr($this->_formula, $index, 2), $COMPARATORS_MULTI)) {

-					if (strlen($value) > 0) {

-						$tokens1[] = new PHPExcel_Calculation_FormulaToken($value, PHPExcel_Calculation_FormulaToken::TOKEN_TYPE_OPERAND);

-						$value = "";

-					}

-					$tokens1[] = new PHPExcel_Calculation_FormulaToken(substr($this->_formula, $index, 2), PHPExcel_Calculation_FormulaToken::TOKEN_TYPE_OPERATORINFIX, PHPExcel_Calculation_FormulaToken::TOKEN_SUBTYPE_LOGICAL);

-					$index += 2;

-					continue;

-				}

-			}

-

-			// standard infix operators

-			if (strpos(PHPExcel_Calculation_FormulaParser::OPERATORS_INFIX, $this->_formula{$index}) !== false) {

-				if (strlen($value) > 0) {

-					$tokens1[] =new PHPExcel_Calculation_FormulaToken($value, PHPExcel_Calculation_FormulaToken::TOKEN_TYPE_OPERAND);

-					$value = "";

-				}

-				$tokens1[] = new PHPExcel_Calculation_FormulaToken($this->_formula{$index}, PHPExcel_Calculation_FormulaToken::TOKEN_TYPE_OPERATORINFIX);

-				++$index;

-				continue;

-			}

-

-			// standard postfix operators (only one)

-			if (strpos(PHPExcel_Calculation_FormulaParser::OPERATORS_POSTFIX, $this->_formula{$index}) !== false) {

-				if (strlen($value) > 0) {

-					$tokens1[] = new PHPExcel_Calculation_FormulaToken($value, PHPExcel_Calculation_FormulaToken::TOKEN_TYPE_OPERAND);

-					$value = "";

-				}

-				$tokens1[] = new PHPExcel_Calculation_FormulaToken($this->_formula{$index}, PHPExcel_Calculation_FormulaToken::TOKEN_TYPE_OPERATORPOSTFIX);

-				++$index;

-				continue;

-			}

-

-			// start subexpression or function

-			if ($this->_formula{$index} == PHPExcel_Calculation_FormulaParser::PAREN_OPEN) {

-				if (strlen($value) > 0) {

-					$tmp = new PHPExcel_Calculation_FormulaToken($value, PHPExcel_Calculation_FormulaToken::TOKEN_TYPE_FUNCTION, PHPExcel_Calculation_FormulaToken::TOKEN_SUBTYPE_START);

-					$tokens1[] = $tmp;

-					$stack[] = clone $tmp;

-					$value = "";

-				} else {

-					$tmp = new PHPExcel_Calculation_FormulaToken("", PHPExcel_Calculation_FormulaToken::TOKEN_TYPE_SUBEXPRESSION, PHPExcel_Calculation_FormulaToken::TOKEN_SUBTYPE_START);

-					$tokens1[] = $tmp;

-					$stack[] = clone $tmp;

-				}

-				++$index;

-				continue;

-			}

-

-			// function, subexpression, or array parameters, or operand unions

-			if ($this->_formula{$index} == PHPExcel_Calculation_FormulaParser::COMMA) {

-				if (strlen($value) > 0) {

-					$tokens1[] = new PHPExcel_Calculation_FormulaToken($value, PHPExcel_Calculation_FormulaToken::TOKEN_TYPE_OPERAND);

-					$value = "";

-				}

-

-				$tmp = array_pop($stack);

-				$tmp->setValue("");

-				$tmp->setTokenSubType(PHPExcel_Calculation_FormulaToken::TOKEN_SUBTYPE_STOP);

-				$stack[] = $tmp;

-

-				if ($tmp->getTokenType() == PHPExcel_Calculation_FormulaToken::TOKEN_TYPE_FUNCTION) {

-					$tokens1[] = new PHPExcel_Calculation_FormulaToken(",", PHPExcel_Calculation_FormulaToken::TOKEN_TYPE_OPERATORINFIX, PHPExcel_Calculation_FormulaToken::TOKEN_SUBTYPE_UNION);

-				} else {

-					$tokens1[] = new PHPExcel_Calculation_FormulaToken(",", PHPExcel_Calculation_FormulaToken::TOKEN_TYPE_ARGUMENT);

-				}

-				++$index;

-				continue;

-			}

-

-			// stop subexpression

-			if ($this->_formula{$index} == PHPExcel_Calculation_FormulaParser::PAREN_CLOSE) {

-				if (strlen($value) > 0) {

-					$tokens1[] = new PHPExcel_Calculation_FormulaToken($value, PHPExcel_Calculation_FormulaToken::TOKEN_TYPE_OPERAND);

-					$value = "";

-				}

-

-				$tmp = array_pop($stack);

-				$tmp->setValue("");

-				$tmp->setTokenSubType(PHPExcel_Calculation_FormulaToken::TOKEN_SUBTYPE_STOP);

-				$tokens1[] = $tmp;

-

-				++$index;

-				continue;

-			}

-

-        	// token accumulation

-			$value .= $this->_formula{$index};

-			++$index;

-		}

-

-		// dump remaining accumulation

-		if (strlen($value) > 0) {

-			$tokens1[] = new PHPExcel_Calculation_FormulaToken($value, PHPExcel_Calculation_FormulaToken::TOKEN_TYPE_OPERAND);

-		}

-

-		// move tokenList to new set, excluding unnecessary white-space tokens and converting necessary ones to intersections

-		$tokenCount = count($tokens1);

-		for ($i = 0; $i < $tokenCount; ++$i) {

-			$token = $tokens1[$i];

-			if (isset($tokens1[$i - 1])) {

-				$previousToken = $tokens1[$i - 1];

-			} else {

-				$previousToken = null;

-			}

-			if (isset($tokens1[$i + 1])) {

-				$nextToken = $tokens1[$i + 1];

-			} else {

-				$nextToken = null;

-			}

-

-			if (is_null($token)) {

-				continue;

-			}

-

-			if ($token->getTokenType() != PHPExcel_Calculation_FormulaToken::TOKEN_TYPE_WHITESPACE) {

-				$tokens2[] = $token;

-				continue;

-			}

-

-			if (is_null($previousToken)) {

-				continue;

-			}

-

-			if (! (

-					(($previousToken->getTokenType() == PHPExcel_Calculation_FormulaToken::TOKEN_TYPE_FUNCTION) && ($previousToken->getTokenSubType() == PHPExcel_Calculation_FormulaToken::TOKEN_SUBTYPE_STOP)) ||

-					(($previousToken->getTokenType() == PHPExcel_Calculation_FormulaToken::TOKEN_TYPE_SUBEXPRESSION) && ($previousToken->getTokenSubType() == PHPExcel_Calculation_FormulaToken::TOKEN_SUBTYPE_STOP)) ||

-					($previousToken->getTokenType() == PHPExcel_Calculation_FormulaToken::TOKEN_TYPE_OPERAND)

-				  ) ) {

-				continue;

-			}

-

-			if (is_null($nextToken)) {

-				continue;

-			}

-

-			if (! (

-					(($nextToken->getTokenType() == PHPExcel_Calculation_FormulaToken::TOKEN_TYPE_FUNCTION) && ($nextToken->getTokenSubType() == PHPExcel_Calculation_FormulaToken::TOKEN_SUBTYPE_START)) ||

-					(($nextToken->getTokenType() == PHPExcel_Calculation_FormulaToken::TOKEN_TYPE_SUBEXPRESSION) && ($nextToken->getTokenSubType() == PHPExcel_Calculation_FormulaToken::TOKEN_SUBTYPE_START)) ||

-					($nextToken->getTokenType() == PHPExcel_Calculation_FormulaToken::TOKEN_TYPE_OPERAND)

-				  ) ) {

-				continue;

-			}

-

-			$tokens2[] = new PHPExcel_Calculation_FormulaToken($value, PHPExcel_Calculation_FormulaToken::TOKEN_TYPE_OPERATORINFIX, PHPExcel_Calculation_FormulaToken::TOKEN_SUBTYPE_INTERSECTION);

-		}

-

-		// move tokens to final list, switching infix "-" operators to prefix when appropriate, switching infix "+" operators

-		// to noop when appropriate, identifying operand and infix-operator subtypes, and pulling "@" from function names

-		$this->_tokens = array();

-

-		$tokenCount = count($tokens2);

-		for ($i = 0; $i < $tokenCount; ++$i) {

-			$token = $tokens2[$i];

-			if (isset($tokens2[$i - 1])) {

-				$previousToken = $tokens2[$i - 1];

-			} else {

-				$previousToken = null;

-			}

-			if (isset($tokens2[$i + 1])) {

-				$nextToken = $tokens2[$i + 1];

-			} else {

-				$nextToken = null;

-			}

-

-			if (is_null($token)) {

-				continue;

-			}

-

-			if ($token->getTokenType() == PHPExcel_Calculation_FormulaToken::TOKEN_TYPE_OPERATORINFIX && $token->getValue() == "-") {

-				if ($i == 0) {

-					$token->setTokenType(PHPExcel_Calculation_FormulaToken::TOKEN_TYPE_OPERATORPREFIX);

-				} else if (

-							(($previousToken->getTokenType() == PHPExcel_Calculation_FormulaToken::TOKEN_TYPE_FUNCTION) && ($previousToken->getTokenSubType() == PHPExcel_Calculation_FormulaToken::TOKEN_SUBTYPE_STOP)) ||

-							(($previousToken->getTokenType() == PHPExcel_Calculation_FormulaToken::TOKEN_TYPE_SUBEXPRESSION) && ($previousToken->getTokenSubType() == PHPExcel_Calculation_FormulaToken::TOKEN_SUBTYPE_STOP)) ||

-							($previousToken->getTokenType() == PHPExcel_Calculation_FormulaToken::TOKEN_TYPE_OPERATORPOSTFIX) ||

-							($previousToken->getTokenType() == PHPExcel_Calculation_FormulaToken::TOKEN_TYPE_OPERAND)

-						) {

-					$token->setTokenSubType(PHPExcel_Calculation_FormulaToken::TOKEN_SUBTYPE_MATH);

-				} else {

-					$token->setTokenType(PHPExcel_Calculation_FormulaToken::TOKEN_TYPE_OPERATORPREFIX);

-				}

-

-				$this->_tokens[] = $token;

-				continue;

-			}

-

-			if ($token->getTokenType() == PHPExcel_Calculation_FormulaToken::TOKEN_TYPE_OPERATORINFIX && $token->getValue() == "+") {

-				if ($i == 0) {

-					continue;

-				} else if (

-							(($previousToken->getTokenType() == PHPExcel_Calculation_FormulaToken::TOKEN_TYPE_FUNCTION) && ($previousToken->getTokenSubType() == PHPExcel_Calculation_FormulaToken::TOKEN_SUBTYPE_STOP)) ||

-							(($previousToken->getTokenType() == PHPExcel_Calculation_FormulaToken::TOKEN_TYPE_SUBEXPRESSION) && ($previousToken->getTokenSubType() == PHPExcel_Calculation_FormulaToken::TOKEN_SUBTYPE_STOP)) ||

-							($previousToken->getTokenType() == PHPExcel_Calculation_FormulaToken::TOKEN_TYPE_OPERATORPOSTFIX) ||

-							($previousToken->getTokenType() == PHPExcel_Calculation_FormulaToken::TOKEN_TYPE_OPERAND)

-						) {

-					$token->setTokenSubType(PHPExcel_Calculation_FormulaToken::TOKEN_SUBTYPE_MATH);

-				} else {

-					continue;

-				}

-

-				$this->_tokens[] = $token;

-				continue;

-			}

-

-			if ($token->getTokenType() == PHPExcel_Calculation_FormulaToken::TOKEN_TYPE_OPERATORINFIX && $token->getTokenSubType() == PHPExcel_Calculation_FormulaToken::TOKEN_SUBTYPE_NOTHING) {

-				if (strpos("<>=", substr($token->getValue(), 0, 1)) !== false) {

-					$token->setTokenSubType(PHPExcel_Calculation_FormulaToken::TOKEN_SUBTYPE_LOGICAL);

-				} else if ($token->getValue() == "&") {

-					$token->setTokenSubType(PHPExcel_Calculation_FormulaToken::TOKEN_SUBTYPE_CONCATENATION);

-				} else {

-					$token->setTokenSubType(PHPExcel_Calculation_FormulaToken::TOKEN_SUBTYPE_MATH);

-				}

-

-				$this->_tokens[] = $token;

-				continue;

-			}

-

-			if ($token->getTokenType() == PHPExcel_Calculation_FormulaToken::TOKEN_TYPE_OPERAND && $token->getTokenSubType() == PHPExcel_Calculation_FormulaToken::TOKEN_SUBTYPE_NOTHING) {

-				if (!is_numeric($token->getValue())) {

-					if (strtoupper($token->getValue()) == "TRUE" || strtoupper($token->getValue() == "FALSE")) {

-						$token->setTokenSubType(PHPExcel_Calculation_FormulaToken::TOKEN_SUBTYPE_LOGICAL);

-					} else {

-						$token->setTokenSubType(PHPExcel_Calculation_FormulaToken::TOKEN_SUBTYPE_RANGE);

-					}

-				} else {

-					$token->setTokenSubType(PHPExcel_Calculation_FormulaToken::TOKEN_SUBTYPE_NUMBER);

-				}

-

-				$this->_tokens[] = $token;

-				continue;

-			}

-

-			if ($token->getTokenType() == PHPExcel_Calculation_FormulaToken::TOKEN_TYPE_FUNCTION) {

-				if (strlen($token->getValue() > 0)) {

-					if (substr($token->getValue(), 0, 1) == "@") {

-						$token->setValue(substr($token->getValue(), 1));

-					}

-				}

-			}

-

-        	$this->_tokens[] = $token;

-		}

-    }

-}

diff --git a/admin/survey/excel/PHPExcel/Calculation/FormulaToken.php b/admin/survey/excel/PHPExcel/Calculation/FormulaToken.php
deleted file mode 100644
index 7fe7d5a..0000000
--- a/admin/survey/excel/PHPExcel/Calculation/FormulaToken.php
+++ /dev/null
@@ -1,176 +0,0 @@
-<?php

-/**

- * PHPExcel

- *

- * Copyright (c) 2006 - 2012 PHPExcel

- *

- * This library is free software; you can redistribute it and/or

- * modify it under the terms of the GNU Lesser General Public

- * License as published by the Free Software Foundation; either

- * version 2.1 of the License, or (at your option) any later version.

- *

- * This library is distributed in the hope that it will be useful,

- * but WITHOUT ANY WARRANTY; without even the implied warranty of

- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

- * Lesser General Public License for more details.

- *

- * You should have received a copy of the GNU Lesser General Public

- * License along with this library; if not, write to the Free Software

- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA

- *

- * @category   PHPExcel

- * @package    PHPExcel_Calculation

- * @copyright  Copyright (c) 2006 - 2012 PHPExcel (http://www.codeplex.com/PHPExcel)

- * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL

- * @version    1.7.8, 2012-10-12

- */

-

-

-/*

-PARTLY BASED ON:

-	Copyright (c) 2007 E. W. Bachtal, Inc.

-

-	Permission is hereby granted, free of charge, to any person obtaining a copy of this software

-	and associated documentation files (the "Software"), to deal in the Software without restriction,

-	including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense,

-	and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so,

-	subject to the following conditions:

-

-	  The above copyright notice and this permission notice shall be included in all copies or substantial

-	  portions of the Software.

-

-	The software is provided "as is", without warranty of any kind, express or implied, including but not

-	limited to the warranties of merchantability, fitness for a particular purpose and noninfringement. In

-	no event shall the authors or copyright holders be liable for any claim, damages or other liability,

-	whether in an action of contract, tort or otherwise, arising from, out of or in connection with the

-	software or the use or other dealings in the software.

-

-	http://ewbi.blogs.com/develops/2007/03/excel_formula_p.html

-	http://ewbi.blogs.com/develops/2004/12/excel_formula_p.html

-*/

-

-

-/**

- * PHPExcel_Calculation_FormulaToken

- *

- * @category   PHPExcel

- * @package    PHPExcel_Calculation

- * @copyright  Copyright (c) 2006 - 2012 PHPExcel (http://www.codeplex.com/PHPExcel)

- */

-class PHPExcel_Calculation_FormulaToken {

-	/* Token types */

-	const TOKEN_TYPE_NOOP					= 'Noop';

-	const TOKEN_TYPE_OPERAND				= 'Operand';

-	const TOKEN_TYPE_FUNCTION				= 'Function';

-	const TOKEN_TYPE_SUBEXPRESSION			= 'Subexpression';

-	const TOKEN_TYPE_ARGUMENT				= 'Argument';

-	const TOKEN_TYPE_OPERATORPREFIX			= 'OperatorPrefix';

-	const TOKEN_TYPE_OPERATORINFIX			= 'OperatorInfix';

-	const TOKEN_TYPE_OPERATORPOSTFIX		= 'OperatorPostfix';

-	const TOKEN_TYPE_WHITESPACE				= 'Whitespace';

-	const TOKEN_TYPE_UNKNOWN				= 'Unknown';

-

-	/* Token subtypes */

-	const TOKEN_SUBTYPE_NOTHING				= 'Nothing';

-	const TOKEN_SUBTYPE_START				= 'Start';

-	const TOKEN_SUBTYPE_STOP				= 'Stop';

-	const TOKEN_SUBTYPE_TEXT				= 'Text';

-	const TOKEN_SUBTYPE_NUMBER				= 'Number';

-	const TOKEN_SUBTYPE_LOGICAL				= 'Logical';

-	const TOKEN_SUBTYPE_ERROR				= 'Error';

-	const TOKEN_SUBTYPE_RANGE				= 'Range';

-	const TOKEN_SUBTYPE_MATH				= 'Math';

-	const TOKEN_SUBTYPE_CONCATENATION		= 'Concatenation';

-	const TOKEN_SUBTYPE_INTERSECTION		= 'Intersection';

-	const TOKEN_SUBTYPE_UNION				= 'Union';

-

-	/**

-	 * Value

-	 *

-	 * @var string

-	 */

-	private $_value;

-

-	/**

-	 * Token Type (represented by TOKEN_TYPE_*)

-	 *

-	 * @var string

-	 */

-	private $_tokenType;

-

-	/**

-	 * Token SubType (represented by TOKEN_SUBTYPE_*)

-	 *

-	 * @var string

-	 */

-	private $_tokenSubType;

-

-    /**

-     * Create a new PHPExcel_Calculation_FormulaToken

-     *

-     * @param string	$pValue

-     * @param string	$pTokenType 	Token type (represented by TOKEN_TYPE_*)

-     * @param string	$pTokenSubType 	Token Subtype (represented by TOKEN_SUBTYPE_*)

-     */

-    public function __construct($pValue, $pTokenType = PHPExcel_Calculation_FormulaToken::TOKEN_TYPE_UNKNOWN, $pTokenSubType = PHPExcel_Calculation_FormulaToken::TOKEN_SUBTYPE_NOTHING)

-    {

-    	// Initialise values

-    	$this->_value				= $pValue;

-    	$this->_tokenType			= $pTokenType;

-    	$this->_tokenSubType 		= $pTokenSubType;

-    }

-

-    /**

-     * Get Value

-     *

-     * @return string

-     */

-    public function getValue() {

-    	return $this->_value;

-    }

-

-    /**

-     * Set Value

-     *

-     * @param string	$value

-     */

-    public function setValue($value) {

-    	$this->_value = $value;

-    }

-

-    /**

-     * Get Token Type (represented by TOKEN_TYPE_*)

-     *

-     * @return string

-     */

-    public function getTokenType() {

-    	return $this->_tokenType;

-    }

-

-    /**

-     * Set Token Type

-     *

-     * @param string	$value

-     */

-    public function setTokenType($value = PHPExcel_Calculation_FormulaToken::TOKEN_TYPE_UNKNOWN) {

-    	$this->_tokenType = $value;

-    }

-

-    /**

-     * Get Token SubType (represented by TOKEN_SUBTYPE_*)

-     *

-     * @return string

-     */

-    public function getTokenSubType() {

-    	return $this->_tokenSubType;

-    }

-

-    /**

-     * Set Token SubType

-     *

-     * @param string	$value

-     */

-    public function setTokenSubType($value = PHPExcel_Calculation_FormulaToken::TOKEN_SUBTYPE_NOTHING) {

-    	$this->_tokenSubType = $value;

-    }

-}

diff --git a/admin/survey/excel/PHPExcel/Calculation/Function.php b/admin/survey/excel/PHPExcel/Calculation/Function.php
deleted file mode 100644
index 92e6dbc..0000000
--- a/admin/survey/excel/PHPExcel/Calculation/Function.php
+++ /dev/null
@@ -1,149 +0,0 @@
-<?php

-/**

- * PHPExcel

- *

- * Copyright (c) 2006 - 2012 PHPExcel

- *

- * This library is free software; you can redistribute it and/or

- * modify it under the terms of the GNU Lesser General Public

- * License as published by the Free Software Foundation; either

- * version 2.1 of the License, or (at your option) any later version.

- *

- * This library is distributed in the hope that it will be useful,

- * but WITHOUT ANY WARRANTY; without even the implied warranty of

- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

- * Lesser General Public License for more details.

- *

- * You should have received a copy of the GNU Lesser General Public

- * License along with this library; if not, write to the Free Software

- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA

- *

- * @category   PHPExcel

- * @package    PHPExcel_Calculation

- * @copyright  Copyright (c) 2006 - 2012 PHPExcel (http://www.codeplex.com/PHPExcel)

- * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL

- * @version    1.7.8, 2012-10-12

- */

-

-

-/**

- * PHPExcel_Calculation_Function

- *

- * @category   PHPExcel

- * @package    PHPExcel_Calculation

- * @copyright  Copyright (c) 2006 - 2012 PHPExcel (http://www.codeplex.com/PHPExcel)

- */

-class PHPExcel_Calculation_Function {

-	/* Function categories */

-	const CATEGORY_CUBE						= 'Cube';

-	const CATEGORY_DATABASE					= 'Database';

-	const CATEGORY_DATE_AND_TIME			= 'Date and Time';

-	const CATEGORY_ENGINEERING				= 'Engineering';

-	const CATEGORY_FINANCIAL				= 'Financial';

-	const CATEGORY_INFORMATION				= 'Information';

-	const CATEGORY_LOGICAL					= 'Logical';

-	const CATEGORY_LOOKUP_AND_REFERENCE		= 'Lookup and Reference';

-	const CATEGORY_MATH_AND_TRIG			= 'Math and Trig';

-	const CATEGORY_STATISTICAL				= 'Statistical';

-	const CATEGORY_TEXT_AND_DATA			= 'Text and Data';

-

-	/**

-	 * Category (represented by CATEGORY_*)

-	 *

-	 * @var string

-	 */

-	private $_category;

-

-	/**

-	 * Excel name

-	 *

-	 * @var string

-	 */

-	private $_excelName;

-

-	/**

-	 * PHPExcel name

-	 *

-	 * @var string

-	 */

-	private $_phpExcelName;

-

-    /**

-     * Create a new PHPExcel_Calculation_Function

-     *

-     * @param 	string		$pCategory 		Category (represented by CATEGORY_*)

-     * @param 	string		$pExcelName		Excel function name

-     * @param 	string		$pPHPExcelName	PHPExcel function mapping

-     * @throws 	Exception

-     */

-    public function __construct($pCategory = NULL, $pExcelName = NULL, $pPHPExcelName = NULL)

-    {

-    	if (($pCategory !== NULL) && ($pExcelName !== NULL) && ($pPHPExcelName !== NULL)) {

-    		// Initialise values

-    		$this->_category 		= $pCategory;

-    		$this->_excelName 		= $pExcelName;

-    		$this->_phpExcelName 	= $pPHPExcelName;

-    	} else {

-    		throw new Exception("Invalid parameters passed.");

-    	}

-    }

-

-    /**

-     * Get Category (represented by CATEGORY_*)

-     *

-     * @return string

-     */

-    public function getCategory() {

-    	return $this->_category;

-    }

-

-    /**

-     * Set Category (represented by CATEGORY_*)

-     *

-     * @param 	string		$value

-     * @throws 	Exception

-     */

-    public function setCategory($value = null) {

-    	if (!is_null($value)) {

-    		$this->_category = $value;

-    	} else {

-    		throw new Exception("Invalid parameter passed.");

-    	}

-    }

-

-    /**

-     * Get Excel name

-     *

-     * @return string

-     */

-    public function getExcelName() {

-    	return $this->_excelName;

-    }

-

-    /**

-     * Set Excel name

-     *

-     * @param string	$value

-     */

-    public function setExcelName($value) {

-    	$this->_excelName = $value;

-    }

-

-    /**

-     * Get PHPExcel name

-     *

-     * @return string

-     */

-    public function getPHPExcelName() {

-    	return $this->_phpExcelName;

-    }

-

-    /**

-     * Set PHPExcel name

-     *

-     * @param string	$value

-     */

-    public function setPHPExcelName($value) {

-    	$this->_phpExcelName = $value;

-    }

-}

diff --git a/admin/survey/excel/PHPExcel/Calculation/Functions.php b/admin/survey/excel/PHPExcel/Calculation/Functions.php
deleted file mode 100644
index 6ea33fa..0000000
--- a/admin/survey/excel/PHPExcel/Calculation/Functions.php
+++ /dev/null
@@ -1,813 +0,0 @@
-<?php

-/**

- * PHPExcel

- *

- * Copyright (c) 2006 - 2012 PHPExcel

- *

- * This library is free software; you can redistribute it and/or

- * modify it under the terms of the GNU Lesser General Public

- * License as published by the Free Software Foundation; either

- * version 2.1 of the License, or (at your option) any later version.

- *

- * This library is distributed in the hope that it will be useful,

- * but WITHOUT ANY WARRANTY; without even the implied warranty of

- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU

- * Lesser General Public License for more details.

- *

- * You should have received a copy of the GNU Lesser General Public

- * License along with this library; if not, write to the Free Software

- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA

- *

- * @category	PHPExcel

- * @package		PHPExcel_Calculation

- * @copyright	Copyright (c) 2006 - 2012 PHPExcel (http://www.codeplex.com/PHPExcel)

- * @license		http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL

- * @version		1.7.8, 2012-10-12

- */

-

-

-/** PHPExcel root directory */

-if (!defined('PHPEXCEL_ROOT')) {

-	/**

-	 * @ignore

-	 */

-	define('PHPEXCEL_ROOT', dirname(__FILE__) . '/../../');

-	require(PHPEXCEL_ROOT . 'PHPExcel/Autoloader.php');

-}

-

-

-/** MAX_VALUE */

-define('MAX_VALUE', 1.2e308);

-

-/** 2 / PI */

-define('M_2DIVPI', 0.63661977236758134307553505349006);

-

-/** MAX_ITERATIONS */

-define('MAX_ITERATIONS', 256);

-

-/** PRECISION */

-define('PRECISION', 8.88E-016);

-

-

-/**

- * PHPExcel_Calculation_Functions

- *

- * @category	PHPExcel

- * @package		PHPExcel_Calculation

- * @copyright	Copyright (c) 2006 - 2012 PHPExcel (http://www.codeplex.com/PHPExcel)

- */

-class PHPExcel_Calculation_Functions {

-

-	/** constants */

-	const COMPATIBILITY_EXCEL		= 'Excel';

-	const COMPATIBILITY_GNUMERIC	= 'Gnumeric';

-	const COMPATIBILITY_OPENOFFICE	= 'OpenOfficeCalc';

-

-	const RETURNDATE_PHP_NUMERIC	= 'P';

-	const RETURNDATE_PHP_OBJECT		= 'O';

-	const RETURNDATE_EXCEL			= 'E';

-

-

-	/**

-	 * Compatibility mode to use for error checking and responses

-	 *

-	 * @access	private

-	 * @var string

-	 */

-	protected static $compatibilityMode	= self::COMPATIBILITY_EXCEL;

-

-	/**

-	 * Data Type to use when returning date values

-	 *

-	 * @access	private

-	 * @var string

-	 */

-	protected static $ReturnDateType	= self::RETURNDATE_EXCEL;

-

-	/**

-	 * List of error codes

-	 *

-	 * @access	private

-	 * @var array

-	 */

-	protected static $_errorCodes	= array( 'null'				=> '#NULL!',

-											 'divisionbyzero'	=> '#DIV/0!',

-											 'value'			=> '#VALUE!',

-											 'reference'		=> '#REF!',

-											 'name'				=> '#NAME?',

-											 'num'				=> '#NUM!',

-											 'na'				=> '#N/A',

-											 'gettingdata'		=> '#GETTING_DATA'

-										   );

-

-

-	/**

-	 * Set the Compatibility Mode

-	 *

-	 * @access	public

-	 * @category Function Configuration

-	 * @param	 string		$compatibilityMode		Compatibility Mode

-	 *												Permitted values are:

-	 *													PHPExcel_Calculation_Functions::COMPATIBILITY_EXCEL			'Excel'

-	 *													PHPExcel_Calculation_Functions::COMPATIBILITY_GNUMERIC		'Gnumeric'

-	 *													PHPExcel_Calculation_Functions::COMPATIBILITY_OPENOFFICE	'OpenOfficeCalc'

-	 * @return	 boolean	(Success or Failure)

-	 */

-	public static function setCompatibilityMode($compatibilityMode) {

-		if (($compatibilityMode == self::COMPATIBILITY_EXCEL) ||

-			($compatibilityMode == self::COMPATIBILITY_GNUMERIC) ||

-			($compatibilityMode == self::COMPATIBILITY_OPENOFFICE)) {

-			self::$compatibilityMode = $compatibilityMode;

-			return True;

-		}

-		return False;

-	}	//	function setCompatibilityMode()

-

-

-	/**

-	 * Return the current Compatibility Mode

-	 *

-	 * @access	public

-	 * @category Function Configuration

-	 * @return	 string		Compatibility Mode

-	 *							Possible Return values are:

-	 *								PHPExcel_Calculation_Functions::COMPATIBILITY_EXCEL			'Excel'

-	 *								PHPExcel_Calculation_Functions::COMPATIBILITY_GNUMERIC		'Gnumeric'

-	 *								PHPExcel_Calculation_Functions::COMPATIBILITY_OPENOFFICE	'OpenOfficeCalc'

-	 */

-	public static function getCompatibilityMode() {

-		return self::$compatibilityMode;

-	}	//	function getCompatibilityMode()

-

-

-	/**

-	 * Set the Return Date Format used by functions that return a date/time (Excel, PHP Serialized Numeric or PHP Object)

-	 *

-	 * @access	public

-	 * @category Function Configuration

-	 * @param	 string	$returnDateType			Return Date Format

-	 *												Permitted values are:

-	 *													PHPExcel_Calculation_Functions::RETURNDATE_PHP_NUMERIC		'P'

-	 *													PHPExcel_Calculation_Functions::RETURNDATE_PHP_OBJECT		'O'

-	 *													PHPExcel_Calculation_Functions::RETURNDATE_EXCEL			'E'

-	 * @return	 boolean							Success or failure

-	 */

-	public static function setReturnDateType($returnDateType) {

-		if (($returnDateType == self::RETURNDATE_PHP_NUMERIC) ||

-			($returnDateType == self::RETURNDATE_PHP_OBJECT) ||

-			($returnDateType == self::RETURNDATE_EXCEL)) {

-			self::$ReturnDateType = $returnDateType;

-			return True;

-		}

-		return False;

-	}	//	function setReturnDateType()

-

-

-	/**

-	 * Return the current Return Date Format for functions that return a date/time (Excel, PHP Serialized Numeric or PHP Object)

-	 *

-	 * @access	public

-	 * @category Function Configuration

-	 * @return	 string		Return Date Format

-	 *							Possible Return values are:

-	 *								PHPExcel_Calculation_Functions::RETURNDATE_PHP_NUMERIC		'P'

-	 *								PHPExcel_Calculation_Functions::RETURNDATE_PHP_OBJECT		'O'

-	 *								PHPExcel_Calculation_Functions::RETURNDATE_EXCEL			'E'

-	 */

-	public static function getReturnDateType() {

-		return self::$ReturnDateType;

-	}	//	function getReturnDateType()

-

-

-	/**

-	 * DUMMY

-	 *

-	 * @access	public

-	 * @category Error Returns

-	 * @return	string	#Not Yet Implemented

-	 */

-	public static function DUMMY() {

-		return '#Not Yet Implemented';

-	}	//	function DUMMY()

-

-

-	/**

-	 * DIV0

-	 *

-	 * @access	public

-	 * @category Error Returns

-	 * @return	string	#Not Yet Implemented

-	 */

-	public static function DIV0() {

-		return self::$_errorCodes['divisionbyzero'];

-	}	//	function DIV0()

-

-

-	/**

-	 * NA

-	 *

-	 * Excel Function:

-	 *		=NA()

-	 *

-	 * Returns the error value #N/A

-	 *		#N/A is the error value that means "no value is available."

-	 *

-	 * @access	public

-	 * @category Logical Functions

-	 * @return	string	#N/A!

-	 */

-	public static function NA() {

-		return self::$_errorCodes['na'];

-	}	//	function NA()

-

-

-	/**

-	 * NaN

-	 *

-	 * Returns the error value #NUM!

-	 *

-	 * @access	public

-	 * @category Error Returns

-	 * @return	string	#NUM!

-	 */

-	public static function NaN() {

-		return self::$_errorCodes['num'];

-	}	//	function NaN()

-

-

-	/**

-	 * NAME

-	 *

-	 * Returns the error value #NAME?

-	 *

-	 * @access	public

-	 * @category Error Returns

-	 * @return	string	#NAME?

-	 */

-	public static function NAME() {

-		return self::$_errorCodes['name'];

-	}	//	function NAME()

-

-

-	/**

-	 * REF

-	 *

-	 * Returns the error value #REF!

-	 *

-	 * @access	public

-	 * @category Error Returns

-	 * @return	string	#REF!

-	 */

-	public static function REF() {

-		return self::$_errorCodes['reference'];

-	}	//	function REF()

-

-

-	/**

-	 * NULL

-	 *

-	 * Returns the error value #NULL!

-	 *

-	 * @access	public

-	 * @category Error Returns

-	 * @return	string	#REF!

-	 */

-	public static function NULL() {

-		return self::$_errorCodes['null'];

-	}	//	function NULL()

-

-

-	/**

-	 * VALUE

-	 *

-	 * Returns the error value #VALUE!

-	 *

-	 * @access	public

-	 * @category Error Returns

-	 * @return	string	#VALUE!

-	 */

-	public static function VALUE() {

-		return self::$_errorCodes['value'];

-	}	//	function VALUE()

-

-

-	public static function isMatrixValue($idx) {

-		return ((substr_count($idx,'.') <= 1) || (preg_match('/\.[A-Z]/',$idx) > 0));

-	}

-

-

-	public static function isValue($idx) {

-		return (substr_count($idx,'.') == 0);

-	}

-

-

-	public static function isCellValue($idx) {

-		return (substr_count($idx,'.') > 1);

-	}

-

-

-	public static function _ifCondition($condition) {

-		$condition	= PHPExcel_Calculation_Functions::flattenSingleValue($condition);

-		if (!in_array($condition{0},array('>', '<', '='))) {

-			if (!is_numeric($condition)) { $condition = PHPExcel_Calculation::_wrapResult(strtoupper($condition)); }

-			return '='.$condition;

-		} else {

-			preg_match('/([<>=]+)(.*)/',$condition,$matches);

-			list(,$operator,$operand) = $matches;

-			if (!is_numeric($operand)) { $operand = PHPExcel_Calculation::_wrapResult(strtoupper($operand)); }

-			return $operator.$operand;

-		}

-	}	//	function _ifCondition()

-

-

-	/**

-	 * ERROR_TYPE

-	 *

-	 * @param	mixed	$value	Value to check

-	 * @return	boolean

-	 */

-	public static function ERROR_TYPE($value = '') {

-		$value	= self::flattenSingleValue($value);

-

-		$i = 1;

-		foreach(self::$_errorCodes as $errorCode) {

-			if ($value === $errorCode) {

-				return $i;

-			}

-			++$i;

-		}

-		return self::NA();

-	}	//	function ERROR_TYPE()

-

-

-	/**

-	 * IS_BLANK

-	 *

-	 * @param	mixed	$value	Value to check

-	 * @return	boolean

-	 */

-	public static function IS_BLANK($value = NULL) {

-		if (!is_null($value)) {

-			$value	= self::flattenSingleValue($value);

-		}

-

-		return is_null($value);

-	}	//	function IS_BLANK()

-

-

-	/**

-	 * IS_ERR

-	 *

-	 * @param	mixed	$value	Value to check

-	 * @return	boolean

-	 */

-	public static function IS_ERR($value = '') {

-		$value		= self::flattenSingleValue($value);

-

-		return self::IS_ERROR($value) && (!self::IS_NA($value));

-	}	//	function IS_ERR()

-

-

-	/**

-	 * IS_ERROR

-	 *

-	 * @param	mixed	$value	Value to check

-	 * @return	boolean

-	 */

-	public static function IS_ERROR($value = '') {

-		$value		= self::flattenSingleValue($value);

-

-		if (!is_string($value))

-			return false;

-		return in_array($value, array_values(self::$_errorCodes));

-	}	//	function IS_ERROR()

-

-

-	/**

-	 * IS_NA

-	 *

-	 * @param	mixed	$value	Value to check

-	 * @return	boolean

-	 */

-	public static function IS_NA($value = '') {

-		$value		= self::flattenSingleValue($value);

-

-		return ($value === self::NA());

-	}	//	function IS_NA()

-

-

-	/**

-	 * IS_EVEN

-	 *

-	 * @param	mixed	$value	Value to check

-	 * @return	boolean

-	 */

-	public static function IS_EVEN($value = NULL) {

-		$value = self::flattenSingleValue($value);

-

-		if ($value === NULL)

-			return self::NAME();

-		if ((is_bool($value)) || ((is_string($value)) && (!is_numeric($value))))

-			return self::VALUE();

-		return ($value % 2 == 0);

-	}	//	function IS_EVEN()

-

-

-	/**

-	 * IS_ODD

-	 *

-	 * @param	mixed	$value	Value to check

-	 * @return	boolean

-	 */

-	public static function IS_ODD($value = NULL) {

-		$value = self::flattenSingleValue($value);

-

-		if ($value === NULL)

-			return self::NAME();

-		if ((is_bool($value)) || ((is_string($value)) && (!is_numeric($value))))

-			return self::VALUE();

-		return (abs($value) % 2 == 1);

-	}	//	function IS_ODD()

-

-

-	/**

-	 * IS_NUMBER

-	 *

-	 * @param	mixed	$value		Value to check

-	 * @return	boolean

-	 */

-	public static function IS_NUMBER($value = NULL) {

-		$value		= self::flattenSingleValue($value);

-

-		if (is_string($value)) {

-			return False;

-		}

-		return is_numeric($value);

-	}	//	function IS_NUMBER()

-

-

-	/**

-	 * IS_LOGICAL

-	 *

-	 * @param	mixed	$value		Value to check

-	 * @return	boolean

-	 */

-	public static function IS_LOGICAL($value = NULL) {

-		$value		= self::flattenSingleValue($value);

-

-		return is_bool($value);

-	}	//	function IS_LOGICAL()

-

-

-	/**

-	 * IS_TEXT

-	 *

-	 * @param	mixed	$value		Value to check

-	 * @return	boolean

-	 */

-	public static function IS_TEXT($value = NULL) {

-		$value		= self::flattenSingleValue($value);

-

-		return (is_string($value) && !self::IS_ERROR($value));

-	}	//	function IS_TEXT()

-

-

-	/**

-	 * IS_NONTEXT

-	 *

-	 * @param	mixed	$value		Value to check

-	 * @return	boolean

-	 */

-	public static function IS_NONTEXT($value = NULL) {

-		return !self::IS_TEXT($value);

-	}	//	function IS_NONTEXT()

-

-

-	/**

-	 * VERSION

-	 *

-	 * @return	string	Version information

-	 */

-	public static function VERSION() {

-		return 'PHPExcel 1.7.8, 2012-10-12';

-	}	//	function VERSION()

-

-

-	/**

-	 * N

-	 *

-	 * Returns a value converted to a number

-	 *

-	 * @param	value		The value you want converted

-	 * @return	number		N converts values listed in the following table

-	 *		If value is or refers to N returns

-	 *		A number			That number

-	 *		A date				The serial number of that date

-	 *		TRUE				1

-	 *		FALSE				0

-	 *		An error value		The error value

-	 *		Anything else		0

-	 */

-	public static function N($value = NULL) {

-		while (is_array($value)) {

-			$value = array_shift($value);

-		}

-

-		switch (gettype($value)) {

-			case 'double'	:

-			case 'float'	:

-			case 'integer'	:

-				return $value;

-				break;

-			case 'boolean'	:

-				return (integer) $value;

-				break;

-			case 'string'	:

-				//	Errors

-				if ((strlen($value) > 0) && ($value{0} == '#')) {

-					return $value;

-				}

-				break;

-		}

-		return 0;

-	}	//	function N()

-

-

-	/**

-	 * TYPE

-	 *

-	 * Returns a number that identifies the type of a value

-	 *

-	 * @param	value		The value you want tested

-	 * @return	number		N converts values listed in the following table

-	 *		If value is or refers to N returns

-	 *		A number			1

-	 *		Text				2

-	 *		Logical Value		4

-	 *		An error value		16

-	 *		Array or Matrix		64

-	 */

-	public static function TYPE($value = NULL) {

-		$value	= self::flattenArrayIndexed($value);

-		if (is_array($value) && (count($value) > 1)) {

-			$a = array_keys($value);

-			$a = array_pop($a);

-			//	Range of cells is an error

-			if (self::isCellValue($a)) {

-				return 16;

-			//	Test for Matrix

-			} elseif (self::isMatrixValue($a)) {

-				return 64;

-			}

-		} elseif(empty($value)) {

-			//	Empty Cell

-			return 1;

-		}

-		$value	= self::flattenSingleValue($value);

-

-		if (($value === NULL) || (is_float($value)) || (is_int($value))) {

-				return 1;

-		} elseif(is_bool($value)) {

-				return 4;

-		} elseif(is_array($value)) {

-				return 64;

-				break;

-		} elseif(is_string($value)) {

-			//	Errors

-			if ((strlen($value) > 0) && ($value{0} == '#')) {

-				return 16;

-			}

-			return 2;

-		}

-		return 0;

-	}	//	function TYPE()

-

-

-	/**

-	 * Convert a multi-dimensional array to a simple 1-dimensional array

-	 *

-	 * @param	array	$array	Array to be flattened

-	 * @return	array	Flattened array

-	 */

-	public static function flattenArray($array) {

-		if (!is_array($array)) {

-			return (array) $array;

-		}

-

-		$arrayValues = array();

-		foreach ($array as $value) {

-			if (is_array($value)) {

-				foreach ($value as $val) {

-					if (is_array($val)) {

-						foreach ($val as $v) {

-							$arrayValues[] = $v;

-						}

-					} else {

-						$arrayValues[] = $val;

-					}

-				}

-			} else {

-				$arrayValues[] = $value;

-			}

-		}

-

-		return $arrayValues;

-	}	//	function flattenArray()

-

-

-	/**

-	 * Convert a multi-dimensional array to a simple 1-dimensional array, but retain an element of indexing

-	 *

-	 * @param	array	$array	Array to be flattened

-	 * @return	array	Flattened array

-	 */

-	public static function flattenArrayIndexed($array) {

-		if (!is_array($array)) {

-			return (array) $array;

-		}

-

-		$arrayValues = array();

-		foreach ($array as $k1 => $value) {

-			if (is_array($value)) {

-				foreach ($value as $k2 => $val) {

-					if (is_array($val)) {

-						foreach ($val as $k3 => $v) {

-							$arrayValues[$k1.'.'.$k2.'.'.$k3] = $v;

-						}

-					} else {

-						$arrayValues[$k1.'.'.$k2] = $val;

-					}

-				}

-			} else {

-				$arrayValues[$k1] = $value;

-			}

-		}

-

-		return $arrayValues;

-	}	//	function flattenArrayIndexed()

-

-

-	/**

-	 * Convert an array to a single scalar value by extracting the first element

-	 *

-	 * @param	mixed		$value		Array or scalar value

-	 * @return	mixed

-	 */

-	public static function flattenSingleValue($value = '') {

-		while (is_array($value)) {

-			$value = array_pop($value);

-		}

-

-		return $value;

-	}	//	function flattenSingleValue()

-

-}	//	class PHPExcel_Calculation_Functions

-

-

-//

-//	There are a few mathematical functions that aren't available on all versions of PHP for all platforms

-//	These functions aren't available in Windows implementations of PHP prior to version 5.3.0

-//	So we test if they do exist for this version of PHP/operating platform; and if not we create them

-//

-if (!function_exists('acosh')) {

-	function acosh($x) {

-		return 2 * log(sqrt(($x + 1) / 2) + sqrt(($x - 1) / 2));

-	}	//	function acosh()

-}

-

-if (!function_exists('asinh')) {

-	function asinh($x) {

-		return log($x + sqrt(1 + $x * $x));

-	}	//	function asinh()

-}

-

-if (!function_exists('atanh')) {

-	function atanh($x) {

-		return (log(1 + $x) - log(1 - $x)) / 2;

-	}	//	function atanh()

-}

-

-if (!function_exists('money_format')) {

-	function money_format($format, $number) {

-		$regex = array( '/%((?:[\^!\-]|\+|\(|\=.)*)([0-9]+)?(?:#([0-9]+))?',

-						 '(?:\.([0-9]+))?([in%])/'

-					  );

-		$regex = implode('', $regex);

-		if (setlocale(LC_MONETARY, null) == '') {

-			setlocale(LC_MONETARY, '');

-		}

-		$locale = localeconv();

-		$number = floatval($number);

-		if (!preg_match($regex, $format, $fmatch)) {

-			trigger_error("No format specified or invalid format", E_USER_WARNING);

-			return $number;

-		}

-		$flags = array( 'fillchar'	=> preg_match('/\=(.)/', $fmatch[1], $match) ? $match[1] : ' ',

-						'nogroup'	=> preg_match('/\^/', $fmatch[1]) > 0,

-						'usesignal'	=> preg_match('/\+|\(/', $fmatch[1], $match) ? $match[0] : '+',

-						'nosimbol'	=> preg_match('/\!/', $fmatch[1]) > 0,

-						'isleft'	=> preg_match('/\-/', $fmatch[1]) > 0

-					  );

-		$width	= trim($fmatch[2]) ? (int)$fmatch[2] : 0;

-		$left	= trim($fmatch[3]) ? (int)$fmatch[3] : 0;

-		$right	= trim($fmatch[4]) ? (int)$fmatch[4] : $locale['int_frac_digits'];

-		$conversion = $fmatch[5];

-		$positive = true;

-		if ($number < 0) {

-			$positive = false;

-			$number *= -1;

-		}

-		$letter = $positive ? 'p' : 'n';

-		$prefix = $suffix = $cprefix = $csuffix = $signal = '';

-		if (!$positive) {

-			$signal = $locale['negative_sign'];

-			switch (true) {

-				case $locale['n_sign_posn'] == 0 || $flags['usesignal'] == '(':

-					$prefix = '(';

-					$suffix = ')';

-					break;

-				case $locale['n_sign_posn'] == 1:

-					$prefix = $signal;

-					break;

-				case $locale['n_sign_posn'] == 2:

-					$suffix = $signal;

-					break;

-				case $locale['n_sign_posn'] == 3:

-					$cprefix = $signal;

-					break;

-				case $locale['n_sign_posn'] == 4:

-					$csuffix = $signal;

-					break;

-			}

-		}

-		if (!$flags['nosimbol']) {

-			$currency = $cprefix;

-			$currency .= ($conversion == 'i' ? $locale['int_curr_symbol'] : $locale['currency_symbol']);

-			$currency .= $csuffix;

-			$currency = iconv('ISO-8859-1','UTF-8',$currency);

-		} else {

-			$currency = '';

-		}

-		$space = $locale["{$letter}_sep_by_space"] ? ' ' : '';

-

-		if (!isset($locale['mon_decimal_point']) || empty($locale['mon_decimal_point'])) {

-			$locale['mon_decimal_point'] = (!isset($locale['decimal_point']) || empty($locale['decimal_point'])) ?

-											$locale['decimal_point'] :

-											'.';

-		}

-

-		$number = number_format($number, $right, $locale['mon_decimal_point'], $flags['nogroup'] ? '' : $locale['mon_thousands_sep'] );

-		$number = explode($locale['mon_decimal_point'], $number);

-

-		$n = strlen($prefix) + strlen($currency);

-		if ($left > 0 && $left > $n) {

-			if ($flags['isleft']) {

-				$number[0] .= str_repeat($flags['fillchar'], $left - $n);

-			} else {

-				$number[0] = str_repeat($flags['fillchar'], $left - $n) . $number[0];

-			}

-		}

-		$number = implode($locale['mon_decimal_point'], $number);

-		if ($locale["{$letter}_cs_precedes"]) {

-			$number = $prefix . $currency . $space . $number . $suffix;

-		} else {

-			$number = $prefix . $number . $space . $currency . $suffix;

-		}

-		if ($width > 0) {

-			$number = str_pad($number, $width, $flags['fillchar'], $flags['isleft'] ? STR_PAD_RIGHT : STR_PAD_LEFT);

-		}

-		$format = str_replace($fmatch[0], $number, $format);

-		return $format;

-	}	//	function money_format()

-}

-

-

-//

-//	Strangely, PHP doesn't have a mb_str_replace multibyte function

-//	As we'll only ever use this function with UTF-8 characters, we can simply "hard-code" the character set

-//

-if ((!function_exists('mb_str_replace')) &&

-	(function_exists('mb_substr')) && (function_exists('mb_strlen')) && (function_exists('mb_strpos'))) {

-	function mb_str_replace($search, $replace, $subject) {

-		if(is_array($subject)) {

-			$ret = array();

-			foreach($subject as $key => $val) {

-				$ret[$key] = mb_str_replace($search, $replace, $val);

-			}

-			return $ret;

-		}

-

-		foreach((array) $search as $key => $s) {

-			if($s == '') {

-				continue;

-			}

-			$r = !is_array($replace) ? $replace : (array_key_exists($key, $replace) ? $replace[$key] : '');

-			$pos = mb_strpos($subject, $s, 0, 'UTF-8');

-			while($pos !== false) {

-				$subject = mb_substr($subject, 0, $pos, 'UTF-8') . $r . mb_substr($subject, $pos + mb_strlen($s, 'UTF-8'), 65535, 'UTF-8');

-				$pos = mb_strpos($subject, $s, $pos + mb_strlen($r, 'UTF-8'), 'UTF-8');

-			}

-		}

-		return $subject;

-	}

-}

diff --git a/admin/survey/excel/PHPExcel/Calculation/Logical.php b/admin/survey/excel/PHPExcel/Calculation/Logical.php
deleted file mode 100644
index 5d5b4f3..0000000
--- a/admin/survey/excel/PHPExcel/Calculation/Logical.php
+++ /dev/null
@@ -1,288 +0,0 @@
-<?php

-/**

- * PHPExcel

- *

- * Copyright (c) 2006 - 2012 PHPExcel

- *

- * This library is free software; you can redistribute it and/or

- * modify it under the terms of the GNU Lesser General Public

- * License as published by the Free Software Foundation; either

- * version 2.1 of the License, or (at your option) any later version.

- *

- * This library is distributed in the hope that it will be useful,

- * but WITHOUT ANY WARRANTY; without even the implied warranty of

- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU

- * Lesser General Public License for more details.

- *

- * You should have received a copy of the GNU Lesser General Public

- * License along with this library; if not, write to the Free Software

- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA

- *

- * @category	PHPExcel

- * @package		PHPExcel_Calculation

- * @copyright	Copyright (c) 2006 - 2012 PHPExcel (http://www.codeplex.com/PHPExcel)

- * @license		http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL

- * @version		1.7.8, 2012-10-12

- */

-

-

-/** PHPExcel root directory */

-if (!defined('PHPEXCEL_ROOT')) {

-	/**

-	 * @ignore

-	 */

-	define('PHPEXCEL_ROOT', dirname(__FILE__) . '/../../');

-	require(PHPEXCEL_ROOT . 'PHPExcel/Autoloader.php');

-}

-

-

-/**

- * PHPExcel_Calculation_Logical

- *

- * @category	PHPExcel

- * @package		PHPExcel_Calculation

- * @copyright	Copyright (c) 2006 - 2012 PHPExcel (http://www.codeplex.com/PHPExcel)

- */

-class PHPExcel_Calculation_Logical {

-

-	/**

-	 * TRUE

-	 *

-	 * Returns the boolean TRUE.

-	 *

-	 * Excel Function:

-	 *		=TRUE()

-	 *

-	 * @access	public

-	 * @category Logical Functions

-	 * @return	boolean		True

-	 */

-	public static function TRUE() {

-		return TRUE;

-	}	//	function TRUE()

-

-

-	/**

-	 * FALSE

-	 *

-	 * Returns the boolean FALSE.

-	 *

-	 * Excel Function:

-	 *		=FALSE()

-	 *

-	 * @access	public

-	 * @category Logical Functions

-	 * @return	boolean		False

-	 */

-	public static function FALSE() {

-		return FALSE;

-	}	//	function FALSE()

-

-

-	/**

-	 * LOGICAL_AND

-	 *

-	 * Returns boolean TRUE if all its arguments are TRUE; returns FALSE if one or more argument is FALSE.

-	 *

-	 * Excel Function:

-	 *		=AND(logical1[,logical2[, ...]])

-	 *

-	 *		The arguments must evaluate to logical values such as TRUE or FALSE, or the arguments must be arrays

-	 *			or references that contain logical values.

-	 *

-	 *		Boolean arguments are treated as True or False as appropriate

-	 *		Integer or floating point arguments are treated as True, except for 0 or 0.0 which are False

-	 *		If any argument value is a string, or a Null, the function returns a #VALUE! error, unless the string holds

-	 *			the value TRUE or FALSE, in which case it is evaluated as the corresponding boolean value

-	 *

-	 * @access	public

-	 * @category Logical Functions

-	 * @param	mixed		$arg,...		Data values

-	 * @return	boolean		The logical AND of the arguments.

-	 */

-	public static function LOGICAL_AND() {

-		// Return value

-		$returnValue = TRUE;

-

-		// Loop through the arguments

-		$aArgs = PHPExcel_Calculation_Functions::flattenArray(func_get_args());

-		$argCount = -1;

-		foreach ($aArgs as $argCount => $arg) {

-			// Is it a boolean value?

-			if (is_bool($arg)) {

-				$returnValue = $returnValue && $arg;

-			} elseif ((is_numeric($arg)) && (!is_string($arg))) {

-				$returnValue = $returnValue && ($arg != 0);

-			} elseif (is_string($arg)) {

-				$arg = strtoupper($arg);

-				if (($arg == 'TRUE') || ($arg == PHPExcel_Calculation::getTRUE())) {

-					$arg = TRUE;

-				} elseif (($arg == 'FALSE') || ($arg == PHPExcel_Calculation::getFALSE())) {

-					$arg = FALSE;

-				} else {

-					return PHPExcel_Calculation_Functions::VALUE();

-				}

-				$returnValue = $returnValue && ($arg != 0);

-			}

-		}

-

-		// Return

-		if ($argCount < 0) {

-			return PHPExcel_Calculation_Functions::VALUE();

-		}

-		return $returnValue;

-	}	//	function LOGICAL_AND()

-

-

-	/**

-	 * LOGICAL_OR

-	 *

-	 * Returns boolean TRUE if any argument is TRUE; returns FALSE if all arguments are FALSE.

-	 *

-	 * Excel Function:

-	 *		=OR(logical1[,logical2[, ...]])

-	 *

-	 *		The arguments must evaluate to logical values such as TRUE or FALSE, or the arguments must be arrays

-	 *			or references that contain logical values.

-	 *

-	 *		Boolean arguments are treated as True or False as appropriate

-	 *		Integer or floating point arguments are treated as True, except for 0 or 0.0 which are False

-	 *		If any argument value is a string, or a Null, the function returns a #VALUE! error, unless the string holds

-	 *			the value TRUE or FALSE, in which case it is evaluated as the corresponding boolean value

-	 *

-	 * @access	public

-	 * @category Logical Functions

-	 * @param	mixed		$arg,...		Data values

-	 * @return	boolean		The logical OR of the arguments.

-	 */

-	public static function LOGICAL_OR() {

-		// Return value

-		$returnValue = FALSE;

-

-		// Loop through the arguments

-		$aArgs = PHPExcel_Calculation_Functions::flattenArray(func_get_args());

-		$argCount = -1;

-		foreach ($aArgs as $argCount => $arg) {

-			// Is it a boolean value?

-			if (is_bool($arg)) {

-				$returnValue = $returnValue || $arg;

-			} elseif ((is_numeric($arg)) && (!is_string($arg))) {

-				$returnValue = $returnValue || ($arg != 0);

-			} elseif (is_string($arg)) {

-				$arg = strtoupper($arg);

-				if (($arg == 'TRUE') || ($arg == PHPExcel_Calculation::getTRUE())) {

-					$arg = TRUE;

-				} elseif (($arg == 'FALSE') || ($arg == PHPExcel_Calculation::getFALSE())) {

-					$arg = FALSE;

-				} else {

-					return PHPExcel_Calculation_Functions::VALUE();

-				}

-				$returnValue = $returnValue || ($arg != 0);

-			}

-		}

-

-		// Return

-		if ($argCount < 0) {

-			return PHPExcel_Calculation_Functions::VALUE();

-		}

-		return $returnValue;

-	}	//	function LOGICAL_OR()

-

-

-	/**

-	 * NOT

-	 *

-	 * Returns the boolean inverse of the argument.

-	 *

-	 * Excel Function:

-	 *		=NOT(logical)

-	 *

-	 *		The argument must evaluate to a logical value such as TRUE or FALSE

-	 *

-	 *		Boolean arguments are treated as True or False as appropriate

-	 *		Integer or floating point arguments are treated as True, except for 0 or 0.0 which are False

-	 *		If any argument value is a string, or a Null, the function returns a #VALUE! error, unless the string holds

-	 *			the value TRUE or FALSE, in which case it is evaluated as the corresponding boolean value

-	 *

-	 * @access	public

-	 * @category Logical Functions

-	 * @param	mixed		$logical	A value or expression that can be evaluated to TRUE or FALSE

-	 * @return	boolean		The boolean inverse of the argument.

-	 */

-	public static function NOT($logical=FALSE) {

-		$logical = PHPExcel_Calculation_Functions::flattenSingleValue($logical);

-		if (is_string($logical)) {

-			$logical = strtoupper($logical);

-			if (($logical == 'TRUE') || ($logical == PHPExcel_Calculation::getTRUE())) {

-				return FALSE;

-			} elseif (($logical == 'FALSE') || ($logical == PHPExcel_Calculation::getFALSE())) {

-				return TRUE;

-			} else {

-				return PHPExcel_Calculation_Functions::VALUE();

-			}

-		}

-

-		return !$logical;

-	}	//	function NOT()

-

-	/**

-	 * STATEMENT_IF

-	 *

-	 * Returns one value if a condition you specify evaluates to TRUE and another value if it evaluates to FALSE.

-	 *

-	 * Excel Function:

-	 *		=IF(condition[,returnIfTrue[,returnIfFalse]])

-	 *

-	 *		Condition is any value or expression that can be evaluated to TRUE or FALSE.

-	 *			For example, A10=100 is a logical expression; if the value in cell A10 is equal to 100,

-	 *			the expression evaluates to TRUE. Otherwise, the expression evaluates to FALSE.

-	 *			This argument can use any comparison calculation operator.

-	 *		ReturnIfTrue is the value that is returned if condition evaluates to TRUE.

-	 *			For example, if this argument is the text string "Within budget" and the condition argument evaluates to TRUE,

-	 *			then the IF function returns the text "Within budget"

-	 *			If condition is TRUE and ReturnIfTrue is blank, this argument returns 0 (zero). To display the word TRUE, use

-	 *			the logical value TRUE for this argument.

-	 *			ReturnIfTrue can be another formula.

-	 *		ReturnIfFalse is the value that is returned if condition evaluates to FALSE.

-	 *			For example, if this argument is the text string "Over budget" and the condition argument evaluates to FALSE,

-	 *			then the IF function returns the text "Over budget".

-	 *			If condition is FALSE and ReturnIfFalse is omitted, then the logical value FALSE is returned.

-	 *			If condition is FALSE and ReturnIfFalse is blank, then the value 0 (zero) is returned.

-	 *			ReturnIfFalse can be another formula.

-	 *

-	 * @access	public

-	 * @category Logical Functions

-	 * @param	mixed	$condition		Condition to evaluate

-	 * @param	mixed	$returnIfTrue	Value to return when condition is true

-	 * @param	mixed	$returnIfFalse	Optional value to return when condition is false

-	 * @return	mixed	The value of returnIfTrue or returnIfFalse determined by condition

-	 */

-	public static function STATEMENT_IF($condition = TRUE, $returnIfTrue = 0, $returnIfFalse = FALSE) {

-		$condition		= (is_null($condition))		? TRUE :	(boolean) PHPExcel_Calculation_Functions::flattenSingleValue($condition);

-		$returnIfTrue	= (is_null($returnIfTrue))	? 0 :		PHPExcel_Calculation_Functions::flattenSingleValue($returnIfTrue);

-		$returnIfFalse	= (is_null($returnIfFalse))	? FALSE :	PHPExcel_Calculation_Functions::flattenSingleValue($returnIfFalse);

-

-		return ($condition) ? $returnIfTrue : $returnIfFalse;

-	}	//	function STATEMENT_IF()

-

-

-	/**

-	 * IFERROR

-	 *

-	 * Excel Function:

-	 *		=IFERROR(testValue,errorpart)

-	 *

-	 * @access	public

-	 * @category Logical Functions

-	 * @param	mixed	$testValue	Value to check, is also the value returned when no error

-	 * @param	mixed	$errorpart	Value to return when testValue is an error condition

-	 * @return	mixed	The value of errorpart or testValue determined by error condition

-	 */

-	public static function IFERROR($testValue = '', $errorpart = '') {

-		$testValue	= (is_null($testValue))	? '' :	PHPExcel_Calculation_Functions::flattenSingleValue($testValue);

-		$errorpart	= (is_null($errorpart))	? '' :	PHPExcel_Calculation_Functions::flattenSingleValue($errorpart);

-

-		return self::STATEMENT_IF(PHPExcel_Calculation_Functions::IS_ERROR($testValue), $errorpart, $testValue);

-	}	//	function IFERROR()

-

-}	//	class PHPExcel_Calculation_Logical

diff --git a/admin/survey/excel/PHPExcel/Calculation/LookupRef.php b/admin/survey/excel/PHPExcel/Calculation/LookupRef.php
deleted file mode 100644
index e0092e9..0000000
--- a/admin/survey/excel/PHPExcel/Calculation/LookupRef.php
+++ /dev/null
@@ -1,808 +0,0 @@
-<?php

-/**

- * PHPExcel

- *

- * Copyright (c) 2006 - 2012 PHPExcel

- *

- * This library is free software; you can redistribute it and/or

- * modify it under the terms of the GNU Lesser General Public

- * License as published by the Free Software Foundation; either

- * version 2.1 of the License, or (at your option) any later version.

- *

- * This library is distributed in the hope that it will be useful,

- * but WITHOUT ANY WARRANTY; without even the implied warranty of

- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU

- * Lesser General Public License for more details.

- *

- * You should have received a copy of the GNU Lesser General Public

- * License along with this library; if not, write to the Free Software

- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA

- *

- * @category	PHPExcel

- * @package		PHPExcel_Calculation

- * @copyright	Copyright (c) 2006 - 2012 PHPExcel (http://www.codeplex.com/PHPExcel)

- * @license		http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL

- * @version		1.7.8, 2012-10-12

- */

-

-

-/** PHPExcel root directory */

-if (!defined('PHPEXCEL_ROOT')) {

-	/**

-	 * @ignore

-	 */

-	define('PHPEXCEL_ROOT', dirname(__FILE__) . '/../../');

-	require(PHPEXCEL_ROOT . 'PHPExcel/Autoloader.php');

-}

-

-

-/**

- * PHPExcel_Calculation_LookupRef

- *

- * @category	PHPExcel

- * @package		PHPExcel_Calculation

- * @copyright	Copyright (c) 2006 - 2012 PHPExcel (http://www.codeplex.com/PHPExcel)

- */

-class PHPExcel_Calculation_LookupRef {

-

-

-	/**

-	 * CELL_ADDRESS

-	 *

-	 * Creates a cell address as text, given specified row and column numbers.

-	 *

-	 * Excel Function:

-	 *		=ADDRESS(row, column, [relativity], [referenceStyle], [sheetText])

-	 *

-	 * @param	row				Row number to use in the cell reference

-	 * @param	column			Column number to use in the cell reference

-	 * @param	relativity		Flag indicating the type of reference to return

-	 *								1 or omitted	Absolute

-	 *								2				Absolute row; relative column

-	 *								3				Relative row; absolute column

-	 *								4				Relative

-	 * @param	referenceStyle	A logical value that specifies the A1 or R1C1 reference style.

-	 *								TRUE or omitted		CELL_ADDRESS returns an A1-style reference

-	 *								FALSE				CELL_ADDRESS returns an R1C1-style reference

-	 * @param	sheetText		Optional Name of worksheet to use

-	 * @return	string

-	 */

-	public static function CELL_ADDRESS($row, $column, $relativity=1, $referenceStyle=True, $sheetText='') {

-		$row		= PHPExcel_Calculation_Functions::flattenSingleValue($row);

-		$column		= PHPExcel_Calculation_Functions::flattenSingleValue($column);

-		$relativity	= PHPExcel_Calculation_Functions::flattenSingleValue($relativity);

-		$sheetText	= PHPExcel_Calculation_Functions::flattenSingleValue($sheetText);

-

-		if (($row < 1) || ($column < 1)) {

-			return PHPExcel_Calculation_Functions::VALUE();

-		}

-

-		if ($sheetText > '') {

-			if (strpos($sheetText,' ') !== False) { $sheetText = "'".$sheetText."'"; }

-			$sheetText .='!';

-		}

-		if ((!is_bool($referenceStyle)) || $referenceStyle) {

-			$rowRelative = $columnRelative = '$';

-			$column = PHPExcel_Cell::stringFromColumnIndex($column-1);

-			if (($relativity == 2) || ($relativity == 4)) { $columnRelative = ''; }

-			if (($relativity == 3) || ($relativity == 4)) { $rowRelative = ''; }

-			return $sheetText.$columnRelative.$column.$rowRelative.$row;

-		} else {

-			if (($relativity == 2) || ($relativity == 4)) { $column = '['.$column.']'; }

-			if (($relativity == 3) || ($relativity == 4)) { $row = '['.$row.']'; }

-			return $sheetText.'R'.$row.'C'.$column;

-		}

-	}	//	function CELL_ADDRESS()

-

-

-	/**

-	 * COLUMN

-	 *

-	 * Returns the column number of the given cell reference

-	 * If the cell reference is a range of cells, COLUMN returns the column numbers of each column in the reference as a horizontal array.

-	 * If cell reference is omitted, and the function is being called through the calculation engine, then it is assumed to be the

-	 *		reference of the cell in which the COLUMN function appears; otherwise this function returns 0.

-	 *

-	 * Excel Function:

-	 *		=COLUMN([cellAddress])

-	 *

-	 * @param	cellAddress		A reference to a range of cells for which you want the column numbers

-	 * @return	integer or array of integer

-	 */

-	public static function COLUMN($cellAddress=Null) {

-		if (is_null($cellAddress) || trim($cellAddress) === '') { return 0; }

-

-		if (is_array($cellAddress)) {

-			foreach($cellAddress as $columnKey => $value) {

-				$columnKey = preg_replace('/[^a-z]/i','',$columnKey);

-				return (integer) PHPExcel_Cell::columnIndexFromString($columnKey);

-			}

-		} else {

-			if (strpos($cellAddress,'!') !== false) {

-				list($sheet,$cellAddress) = explode('!',$cellAddress);

-			}

-			if (strpos($cellAddress,':') !== false) {

-				list($startAddress,$endAddress) = explode(':',$cellAddress);

-				$startAddress = preg_replace('/[^a-z]/i','',$startAddress);

-				$endAddress = preg_replace('/[^a-z]/i','',$endAddress);

-				$returnValue = array();

-				do {

-					$returnValue[] = (integer) PHPExcel_Cell::columnIndexFromString($startAddress);

-				} while ($startAddress++ != $endAddress);

-				return $returnValue;

-			} else {

-				$cellAddress = preg_replace('/[^a-z]/i','',$cellAddress);

-				return (integer) PHPExcel_Cell::columnIndexFromString($cellAddress);

-			}

-		}

-	}	//	function COLUMN()

-

-

-	/**

-	 * COLUMNS

-	 *

-	 * Returns the number of columns in an array or reference.

-	 *

-	 * Excel Function:

-	 *		=COLUMNS(cellAddress)

-	 *

-	 * @param	cellAddress		An array or array formula, or a reference to a range of cells for which you want the number of columns

-	 * @return	integer			The number of columns in cellAddress

-	 */

-	public static function COLUMNS($cellAddress=Null) {

-		if (is_null($cellAddress) || $cellAddress === '') {

-			return 1;

-		} elseif (!is_array($cellAddress)) {

-			return PHPExcel_Calculation_Functions::VALUE();

-		}

-

-		$x = array_keys($cellAddress);

-		$x = array_shift($x);

-		$isMatrix = (is_numeric($x));

-		list($columns,$rows) = PHPExcel_Calculation::_getMatrixDimensions($cellAddress);

-

-		if ($isMatrix) {

-			return $rows;

-		} else {

-			return $columns;

-		}

-	}	//	function COLUMNS()

-

-

-	/**

-	 * ROW

-	 *

-	 * Returns the row number of the given cell reference

-	 * If the cell reference is a range of cells, ROW returns the row numbers of each row in the reference as a vertical array.

-	 * If cell reference is omitted, and the function is being called through the calculation engine, then it is assumed to be the

-	 *		reference of the cell in which the ROW function appears; otherwise this function returns 0.

-	 *

-	 * Excel Function:

-	 *		=ROW([cellAddress])

-	 *

-	 * @param	cellAddress		A reference to a range of cells for which you want the row numbers

-	 * @return	integer or array of integer

-	 */

-	public static function ROW($cellAddress=Null) {

-		if (is_null($cellAddress) || trim($cellAddress) === '') { return 0; }

-

-		if (is_array($cellAddress)) {

-			foreach($cellAddress as $columnKey => $rowValue) {

-				foreach($rowValue as $rowKey => $cellValue) {

-					return (integer) preg_replace('/[^0-9]/i','',$rowKey);

-				}

-			}

-		} else {

-			if (strpos($cellAddress,'!') !== false) {

-				list($sheet,$cellAddress) = explode('!',$cellAddress);

-			}

-			if (strpos($cellAddress,':') !== false) {

-				list($startAddress,$endAddress) = explode(':',$cellAddress);

-				$startAddress = preg_replace('/[^0-9]/','',$startAddress);

-				$endAddress = preg_replace('/[^0-9]/','',$endAddress);

-				$returnValue = array();

-				do {

-					$returnValue[][] = (integer) $startAddress;

-				} while ($startAddress++ != $endAddress);

-				return $returnValue;

-			} else {

-				list($cellAddress) = explode(':',$cellAddress);

-				return (integer) preg_replace('/[^0-9]/','',$cellAddress);

-			}

-		}

-	}	//	function ROW()

-

-

-	/**

-	 * ROWS

-	 *

-	 * Returns the number of rows in an array or reference.

-	 *

-	 * Excel Function:

-	 *		=ROWS(cellAddress)

-	 *

-	 * @param	cellAddress		An array or array formula, or a reference to a range of cells for which you want the number of rows

-	 * @return	integer			The number of rows in cellAddress

-	 */

-	public static function ROWS($cellAddress=Null) {

-		if (is_null($cellAddress) || $cellAddress === '') {

-			return 1;

-		} elseif (!is_array($cellAddress)) {

-			return PHPExcel_Calculation_Functions::VALUE();

-		}

-

-		$i = array_keys($cellAddress);

-		$isMatrix = (is_numeric(array_shift($i)));

-		list($columns,$rows) = PHPExcel_Calculation::_getMatrixDimensions($cellAddress);

-

-		if ($isMatrix) {

-			return $columns;

-		} else {

-			return $rows;

-		}

-	}	//	function ROWS()

-

-

-	/**

-	 * HYPERLINK

-	 *

-	 * Excel Function:

-	 *		=HYPERLINK(linkURL,displayName)

-	 *

-	 * @access	public

-	 * @category Logical Functions

-	 * @param	string	$linkURL		Value to check, is also the value returned when no error

-	 * @param	string	$displayName	Value to return when testValue is an error condition

-	 * @return	mixed	The value of $displayName (or $linkURL if $displayName was blank)

-	 */

-	public static function HYPERLINK($linkURL = '', $displayName = null, PHPExcel_Cell $pCell = null) {

-		$args = func_get_args();

-		$pCell = array_pop($args);

-

-		$linkURL		= (is_null($linkURL))		? '' :	PHPExcel_Calculation_Functions::flattenSingleValue($linkURL);

-		$displayName	= (is_null($displayName))	? '' :	PHPExcel_Calculation_Functions::flattenSingleValue($displayName);

-

-		if ((!is_object($pCell)) || (trim($linkURL) == '')) {

-			return PHPExcel_Calculation_Functions::REF();

-		}

-

-		if ((is_object($displayName)) || trim($displayName) == '') {

-			$displayName = $linkURL;

-		}

-

-		$pCell->getHyperlink()->setUrl($linkURL);

-

-		return $displayName;

-	}	//	function HYPERLINK()

-

-

-	/**

-	 * INDIRECT

-	 *

-	 * Returns the reference specified by a text string.

-	 * References are immediately evaluated to display their contents.

-	 *

-	 * Excel Function:

-	 *		=INDIRECT(cellAddress)

-	 *

-	 * NOTE - INDIRECT() does not yet support the optional a1 parameter introduced in Excel 2010

-	 *

-	 * @param	cellAddress		An array or array formula, or a reference to a range of cells for which you want the number of rows

-	 * @return	mixed			The cells referenced by cellAddress

-	 *

-	 * @todo	Support for the optional a1 parameter introduced in Excel 2010

-	 *

-	 */

-	public static function INDIRECT($cellAddress=Null, PHPExcel_Cell $pCell = null) {

-		$cellAddress	= PHPExcel_Calculation_Functions::flattenSingleValue($cellAddress);

-		if (is_null($cellAddress) || $cellAddress === '') {

-			return PHPExcel_Calculation_Functions::REF();

-		}

-

-		$cellAddress1 = $cellAddress;

-		$cellAddress2 = NULL;

-		if (strpos($cellAddress,':') !== false) {

-			list($cellAddress1,$cellAddress2) = explode(':',$cellAddress);

-		}

-

-		if ((!preg_match('/^'.PHPExcel_Calculation::CALCULATION_REGEXP_CELLREF.'$/i', $cellAddress1, $matches)) ||

-			((!is_null($cellAddress2)) && (!preg_match('/^'.PHPExcel_Calculation::CALCULATION_REGEXP_CELLREF.'$/i', $cellAddress2, $matches)))) {

-

-			if (!preg_match('/^'.PHPExcel_Calculation::CALCULATION_REGEXP_NAMEDRANGE.'$/i', $cellAddress1, $matches)) {

-				return PHPExcel_Calculation_Functions::REF();

-			}

-

-			if (strpos($cellAddress,'!') !== false) {

-				list($sheetName,$cellAddress) = explode('!',$cellAddress);

-				$pSheet = $pCell->getParent()->getParent()->getSheetByName($sheetName);

-			} else {

-				$pSheet = $pCell->getParent();

-			}

-

-			return PHPExcel_Calculation::getInstance()->extractNamedRange($cellAddress, $pSheet, False);

-		}

-

-		if (strpos($cellAddress,'!') !== false) {

-			list($sheetName,$cellAddress) = explode('!',$cellAddress);

-			$pSheet = $pCell->getParent()->getParent()->getSheetByName($sheetName);

-		} else {

-			$pSheet = $pCell->getParent();

-		}

-

-		return PHPExcel_Calculation::getInstance()->extractCellRange($cellAddress, $pSheet, False);

-	}	//	function INDIRECT()

-

-

-	/**

-	 * OFFSET

-	 *

-	 * Returns a reference to a range that is a specified number of rows and columns from a cell or range of cells.

-	 * The reference that is returned can be a single cell or a range of cells. You can specify the number of rows and

-	 * the number of columns to be returned.

-	 *

-	 * Excel Function:

-	 *		=OFFSET(cellAddress, rows, cols, [height], [width])

-	 *

-	 * @param	cellAddress		The reference from which you want to base the offset. Reference must refer to a cell or

-	 *								range of adjacent cells; otherwise, OFFSET returns the #VALUE! error value.

-	 * @param	rows			The number of rows, up or down, that you want the upper-left cell to refer to.

-	 *								Using 5 as the rows argument specifies that the upper-left cell in the reference is

-	 *								five rows below reference. Rows can be positive (which means below the starting reference)

-	 *								or negative (which means above the starting reference).

-	 * @param	cols			The number of columns, to the left or right, that you want the upper-left cell of the result

-	 *								to refer to. Using 5 as the cols argument specifies that the upper-left cell in the

-	 *								reference is five columns to the right of reference. Cols can be positive (which means

-	 *								to the right of the starting reference) or negative (which means to the left of the

-	 *								starting reference).

-	 * @param	height			The height, in number of rows, that you want the returned reference to be. Height must be a positive number.

-	 * @param	width			The width, in number of columns, that you want the returned reference to be. Width must be a positive number.

-	 * @return	string			A reference to a cell or range of cells

-	 */

-	public static function OFFSET($cellAddress=Null,$rows=0,$columns=0,$height=null,$width=null) {

-		$rows		= PHPExcel_Calculation_Functions::flattenSingleValue($rows);

-		$columns	= PHPExcel_Calculation_Functions::flattenSingleValue($columns);

-		$height		= PHPExcel_Calculation_Functions::flattenSingleValue($height);

-		$width		= PHPExcel_Calculation_Functions::flattenSingleValue($width);

-		if ($cellAddress == Null) {

-			return 0;

-		}

-

-		$args = func_get_args();

-		$pCell = array_pop($args);

-		if (!is_object($pCell)) {

-			return PHPExcel_Calculation_Functions::REF();

-		}

-

-		$sheetName = null;

-		if (strpos($cellAddress,"!")) {

-			list($sheetName,$cellAddress) = explode("!",$cellAddress);

-		}

-		if (strpos($cellAddress,":")) {

-			list($startCell,$endCell) = explode(":",$cellAddress);

-		} else {

-			$startCell = $endCell = $cellAddress;

-		}

-		list($startCellColumn,$startCellRow) = PHPExcel_Cell::coordinateFromString($startCell);

-		list($endCellColumn,$endCellRow) = PHPExcel_Cell::coordinateFromString($endCell);

-

-		$startCellRow += $rows;

-		$startCellColumn = PHPExcel_Cell::columnIndexFromString($startCellColumn) - 1;

-		$startCellColumn += $columns;

-

-		if (($startCellRow <= 0) || ($startCellColumn < 0)) {

-			return PHPExcel_Calculation_Functions::REF();

-		}

-		$endCellColumn = PHPExcel_Cell::columnIndexFromString($endCellColumn) - 1;

-		if (($width != null) && (!is_object($width))) {

-			$endCellColumn = $startCellColumn + $width - 1;

-		} else {

-			$endCellColumn += $columns;

-		}

-		$startCellColumn = PHPExcel_Cell::stringFromColumnIndex($startCellColumn);

-

-		if (($height != null) && (!is_object($height))) {

-			$endCellRow = $startCellRow + $height - 1;

-		} else {

-			$endCellRow += $rows;

-		}

-

-		if (($endCellRow <= 0) || ($endCellColumn < 0)) {

-			return PHPExcel_Calculation_Functions::REF();

-		}

-		$endCellColumn = PHPExcel_Cell::stringFromColumnIndex($endCellColumn);

-

-		$cellAddress = $startCellColumn.$startCellRow;

-		if (($startCellColumn != $endCellColumn) || ($startCellRow != $endCellRow)) {

-			$cellAddress .= ':'.$endCellColumn.$endCellRow;

-		}

-

-		if ($sheetName !== null) {

-			$pSheet = $pCell->getParent()->getParent()->getSheetByName($sheetName);

-		} else {

-			$pSheet = $pCell->getParent();

-		}

-

-		return PHPExcel_Calculation::getInstance()->extractCellRange($cellAddress, $pSheet, False);

-	}	//	function OFFSET()

-

-

-	/**

-	 * CHOOSE

-	 *

-	 * Uses lookup_value to return a value from the list of value arguments.

-	 * Use CHOOSE to select one of up to 254 values based on the lookup_value.

-	 *

-	 * Excel Function:

-	 *		=CHOOSE(index_num, value1, [value2], ...)

-	 *

-	 * @param	index_num		Specifies which value argument is selected.

-	 *							Index_num must be a number between 1 and 254, or a formula or reference to a cell containing a number

-	 *								between 1 and 254.

-	 * @param	value1...		Value1 is required, subsequent values are optional.

-	 *							Between 1 to 254 value arguments from which CHOOSE selects a value or an action to perform based on

-	 *								index_num. The arguments can be numbers, cell references, defined names, formulas, functions, or

-	 *								text.

-	 * @return	mixed			The selected value

-	 */

-	public static function CHOOSE() {

-		$chooseArgs = func_get_args();

-		$chosenEntry = PHPExcel_Calculation_Functions::flattenArray(array_shift($chooseArgs));

-		$entryCount = count($chooseArgs) - 1;

-

-		if(is_array($chosenEntry)) {

-			$chosenEntry = array_shift($chosenEntry);

-		}

-		if ((is_numeric($chosenEntry)) && (!is_bool($chosenEntry))) {

-			--$chosenEntry;

-		} else {

-			return PHPExcel_Calculation_Functions::VALUE();

-		}

-		$chosenEntry = floor($chosenEntry);

-		if (($chosenEntry <= 0) || ($chosenEntry > $entryCount)) {

-			return PHPExcel_Calculation_Functions::VALUE();

-		}

-

-		if (is_array($chooseArgs[$chosenEntry])) {

-			return PHPExcel_Calculation_Functions::flattenArray($chooseArgs[$chosenEntry]);

-		} else {

-			return $chooseArgs[$chosenEntry];

-		}

-	}	//	function CHOOSE()

-

-

-	/**

-	 * MATCH

-	 *

-	 * The MATCH function searches for a specified item in a range of cells

-	 *

-	 * Excel Function:

-	 *		=MATCH(lookup_value, lookup_array, [match_type])

-	 *

-	 * @param	lookup_value	The value that you want to match in lookup_array

-	 * @param	lookup_array	The range of cells being searched

-	 * @param	match_type		The number -1, 0, or 1. -1 means above, 0 means exact match, 1 means below. If match_type is 1 or -1, the list has to be ordered.

-	 * @return	integer			The relative position of the found item

-	 */

-	public static function MATCH($lookup_value, $lookup_array, $match_type=1) {

-		$lookup_array = PHPExcel_Calculation_Functions::flattenArray($lookup_array);

-		$lookup_value = PHPExcel_Calculation_Functions::flattenSingleValue($lookup_value);

-		$match_type	= (is_null($match_type)) ? 1 : (int) PHPExcel_Calculation_Functions::flattenSingleValue($match_type);

-		//	MATCH is not case sensitive

-		$lookup_value = strtolower($lookup_value);

-

-		//	lookup_value type has to be number, text, or logical values

-		if ((!is_numeric($lookup_value)) && (!is_string($lookup_value)) && (!is_bool($lookup_value))) {

-			return PHPExcel_Calculation_Functions::NA();

-		}

-

-		//	match_type is 0, 1 or -1

-		if (($match_type !== 0) && ($match_type !== -1) && ($match_type !== 1)) {

-			return PHPExcel_Calculation_Functions::NA();

-		}

-

-		//	lookup_array should not be empty

-		$lookupArraySize = count($lookup_array);

-		if ($lookupArraySize <= 0) {

-			return PHPExcel_Calculation_Functions::NA();

-		}

-

-		//	lookup_array should contain only number, text, or logical values, or empty (null) cells

-		foreach($lookup_array as $i => $lookupArrayValue) {

-			//	check the type of the value

-			if ((!is_numeric($lookupArrayValue)) && (!is_string($lookupArrayValue)) &&

-				(!is_bool($lookupArrayValue)) && (!is_null($lookupArrayValue))) {

-				return PHPExcel_Calculation_Functions::NA();

-			}

-			//	convert strings to lowercase for case-insensitive testing

-			if (is_string($lookupArrayValue)) {

-				$lookup_array[$i] = strtolower($lookupArrayValue);

-			}

-			if ((is_null($lookupArrayValue)) && (($match_type == 1) || ($match_type == -1))) {

-				$lookup_array = array_slice($lookup_array,0,$i-1);

-			}

-		}

-

-		// if match_type is 1 or -1, the list has to be ordered

-		if ($match_type == 1) {

-			asort($lookup_array);

-			$keySet = array_keys($lookup_array);

-		} elseif($match_type == -1) {

-			arsort($lookup_array);

-			$keySet = array_keys($lookup_array);

-		}

-

-		// **

-		// find the match

-		// **

-		// loop on the cells

-//		var_dump($lookup_array);

-//		echo '<br />';

-		foreach($lookup_array as $i => $lookupArrayValue) {

-			if (($match_type == 0) && ($lookupArrayValue == $lookup_value)) {

-				//	exact match

-				return ++$i;

-			} elseif (($match_type == -1) && ($lookupArrayValue <= $lookup_value)) {

-//				echo '$i = '.$i.' => ';

-//				var_dump($lookupArrayValue);

-//				echo '<br />';

-//				echo 'Keyset = ';

-//				var_dump($keySet);

-//				echo '<br />';

-				$i = array_search($i,$keySet);

-//				echo '$i='.$i.'<br />';

-				// if match_type is -1 <=> find the smallest value that is greater than or equal to lookup_value

-				if ($i < 1){

-					// 1st cell was allready smaller than the lookup_value

-					break;

-				} else {

-					// the previous cell was the match

-					return $keySet[$i-1]+1;

-				}

-			} elseif (($match_type == 1) && ($lookupArrayValue >= $lookup_value)) {

-//				echo '$i = '.$i.' => ';

-//				var_dump($lookupArrayValue);

-//				echo '<br />';

-//				echo 'Keyset = ';

-//				var_dump($keySet);

-//				echo '<br />';

-				$i = array_search($i,$keySet);

-//				echo '$i='.$i.'<br />';

-				// if match_type is 1 <=> find the largest value that is less than or equal to lookup_value

-				if ($i < 1){

-					// 1st cell was allready bigger than the lookup_value

-					break;

-				} else {

-					// the previous cell was the match

-					return $keySet[$i-1]+1;

-				}

-			}

-		}

-

-		//	unsuccessful in finding a match, return #N/A error value

-		return PHPExcel_Calculation_Functions::NA();

-	}	//	function MATCH()

-

-

-	/**

-	 * INDEX

-	 *

-	 * Uses an index to choose a value from a reference or array

-	 *

-	 * Excel Function:

-	 *		=INDEX(range_array, row_num, [column_num])

-	 *

-	 * @param	range_array		A range of cells or an array constant

-	 * @param	row_num			The row in array from which to return a value. If row_num is omitted, column_num is required.

-	 * @param	column_num		The column in array from which to return a value. If column_num is omitted, row_num is required.

-	 * @return	mixed			the value of a specified cell or array of cells

-	 */

-	public static function INDEX($arrayValues,$rowNum = 0,$columnNum = 0) {

-

-		if (($rowNum < 0) || ($columnNum < 0)) {

-			return PHPExcel_Calculation_Functions::VALUE();

-		}

-

-		if (!is_array($arrayValues)) {

-			return PHPExcel_Calculation_Functions::REF();

-		}

-

-		$rowKeys = array_keys($arrayValues);

-		$columnKeys = @array_keys($arrayValues[$rowKeys[0]]);

-

-		if ($columnNum > count($columnKeys)) {

-			return PHPExcel_Calculation_Functions::VALUE();

-		} elseif ($columnNum == 0) {

-			if ($rowNum == 0) {

-				return $arrayValues;

-			}

-			$rowNum = $rowKeys[--$rowNum];

-			$returnArray = array();

-			foreach($arrayValues as $arrayColumn) {

-				if (is_array($arrayColumn)) {

-					if (isset($arrayColumn[$rowNum])) {

-						$returnArray[] = $arrayColumn[$rowNum];

-					} else {

-						return $arrayValues[$rowNum];

-					}

-				} else {

-					return $arrayValues[$rowNum];

-				}

-			}

-			return $returnArray;

-		}

-		$columnNum = $columnKeys[--$columnNum];

-		if ($rowNum > count($rowKeys)) {

-			return PHPExcel_Calculation_Functions::VALUE();

-		} elseif ($rowNum == 0) {

-			return $arrayValues[$columnNum];

-		}

-		$rowNum = $rowKeys[--$rowNum];

-

-		return $arrayValues[$rowNum][$columnNum];

-	}	//	function INDEX()

-

-

-	/**

-	 * TRANSPOSE

-	 *

-	 * @param	array	$matrixData	A matrix of values

-	 * @return	array

-	 *

-	 * Unlike the Excel TRANSPOSE function, which will only work on a single row or column, this function will transpose a full matrix.

-	 */

-	public static function TRANSPOSE($matrixData) {

-		$returnMatrix = array();

-		if (!is_array($matrixData)) { $matrixData = array(array($matrixData)); }

-

-		$column = 0;

-		foreach($matrixData as $matrixRow) {

-			$row = 0;

-			foreach($matrixRow as $matrixCell) {

-				$returnMatrix[$row][$column] = $matrixCell;

-				++$row;

-			}

-			++$column;

-		}

-		return $returnMatrix;

-	}	//	function TRANSPOSE()

-

-

-	private static function _vlookupSort($a,$b) {

-		$f = array_keys($a);

-		$firstColumn = array_shift($f);

-		if (strtolower($a[$firstColumn]) == strtolower($b[$firstColumn])) {

-			return 0;

-		}

-		return (strtolower($a[$firstColumn]) < strtolower($b[$firstColumn])) ? -1 : 1;

-	}	//	function _vlookupSort()

-

-

-	/**

-	* VLOOKUP

-	* The VLOOKUP function searches for value in the left-most column of lookup_array and returns the value in the same row based on the index_number.

-	* @param	lookup_value	The value that you want to match in lookup_array

-	* @param	lookup_array	The range of cells being searched

-	* @param	index_number	The column number in table_array from which the matching value must be returned. The first column is 1.

-	* @param	not_exact_match	Determines if you are looking for an exact match based on lookup_value.

-	* @return	mixed			The value of the found cell

-	*/

-	public static function VLOOKUP($lookup_value, $lookup_array, $index_number, $not_exact_match=true) {

-		$lookup_value	= PHPExcel_Calculation_Functions::flattenSingleValue($lookup_value);

-		$index_number	= PHPExcel_Calculation_Functions::flattenSingleValue($index_number);

-		$not_exact_match	= PHPExcel_Calculation_Functions::flattenSingleValue($not_exact_match);

-

-		// index_number must be greater than or equal to 1

-		if ($index_number < 1) {

-			return PHPExcel_Calculation_Functions::VALUE();

-		}

-

-		// index_number must be less than or equal to the number of columns in lookup_array

-		if ((!is_array($lookup_array)) || (empty($lookup_array))) {

-			return PHPExcel_Calculation_Functions::REF();

-		} else {

-			$f = array_keys($lookup_array);

-			$firstRow = array_pop($f);

-			if ((!is_array($lookup_array[$firstRow])) || ($index_number > count($lookup_array[$firstRow]))) {

-				return PHPExcel_Calculation_Functions::REF();

-			} else {

-				$columnKeys = array_keys($lookup_array[$firstRow]);

-				$returnColumn = $columnKeys[--$index_number];

-				$firstColumn = array_shift($columnKeys);

-			}

-		}

-

-		if (!$not_exact_match) {

-			uasort($lookup_array,array('self','_vlookupSort'));

-		}

-

-		$rowNumber = $rowValue = False;

-		foreach($lookup_array as $rowKey => $rowData) {

-			if (strtolower($rowData[$firstColumn]) > strtolower($lookup_value)) {

-				break;

-			}

-			$rowNumber = $rowKey;

-			$rowValue = $rowData[$firstColumn];

-		}

-

-		if ($rowNumber !== false) {

-			if ((!$not_exact_match) && ($rowValue != $lookup_value)) {

-				//	if an exact match is required, we have what we need to return an appropriate response

-				return PHPExcel_Calculation_Functions::NA();

-			} else {

-				//	otherwise return the appropriate value

-				return $lookup_array[$rowNumber][$returnColumn];

-			}

-		}

-

-		return PHPExcel_Calculation_Functions::NA();

-	}	//	function VLOOKUP()

-

-

-	/**

-	 * LOOKUP

-	 * The LOOKUP function searches for value either from a one-row or one-column range or from an array.

-	 * @param	lookup_value	The value that you want to match in lookup_array

-	 * @param	lookup_vector	The range of cells being searched

-	 * @param	result_vector	The column from which the matching value must be returned

-	 * @return	mixed			The value of the found cell

-	 */

-	public static function LOOKUP($lookup_value, $lookup_vector, $result_vector=null) {

-		$lookup_value	= PHPExcel_Calculation_Functions::flattenSingleValue($lookup_value);

-

-		if (!is_array($lookup_vector)) {

-			return PHPExcel_Calculation_Functions::NA();

-		}

-		$lookupRows = count($lookup_vector);

-		$l = array_keys($lookup_vector);

-		$l = array_shift($l);

-		$lookupColumns = count($lookup_vector[$l]);

-		if ((($lookupRows == 1) && ($lookupColumns > 1)) || (($lookupRows == 2) && ($lookupColumns != 2))) {

-			$lookup_vector = self::TRANSPOSE($lookup_vector);

-			$lookupRows = count($lookup_vector);

-			$l = array_keys($lookup_vector);

-			$lookupColumns = count($lookup_vector[array_shift($l)]);

-		}

-

-		if (is_null($result_vector)) {

-			$result_vector = $lookup_vector;

-		}

-		$resultRows = count($result_vector);

-		$l = array_keys($result_vector);

-		$l = array_shift($l);

-		$resultColumns = count($result_vector[$l]);

-		if ((($resultRows == 1) && ($resultColumns > 1)) || (($resultRows == 2) && ($resultColumns != 2))) {

-			$result_vector = self::TRANSPOSE($result_vector);

-			$resultRows = count($result_vector);

-			$r = array_keys($result_vector);

-			$resultColumns = count($result_vector[array_shift($r)]);

-		}

-

-		if ($lookupRows == 2) {

-			$result_vector = array_pop($lookup_vector);

-			$lookup_vector = array_shift($lookup_vector);

-		}

-		if ($lookupColumns != 2) {

-			foreach($lookup_vector as &$value) {

-				if (is_array($value)) {

-					$k = array_keys($value);

-					$key1 = $key2 = array_shift($k);

-					$key2++;

-					$dataValue1 = $value[$key1];

-				} else {

-					$key1 = 0;

-					$key2 = 1;

-					$dataValue1 = $value;

-				}

-				$dataValue2 = array_shift($result_vector);

-				if (is_array($dataValue2)) {

-					$dataValue2 = array_shift($dataValue2);

-				}

-				$value = array($key1 => $dataValue1, $key2 => $dataValue2);

-			}

-			unset($value);

-		}

-

-		return self::VLOOKUP($lookup_value,$lookup_vector,2);

- 	}	//	function LOOKUP()

-

-}	//	class PHPExcel_Calculation_LookupRef

diff --git a/admin/survey/excel/PHPExcel/Calculation/MathTrig.php b/admin/survey/excel/PHPExcel/Calculation/MathTrig.php
deleted file mode 100644
index 614e4f1..0000000
--- a/admin/survey/excel/PHPExcel/Calculation/MathTrig.php
+++ /dev/null
@@ -1,1366 +0,0 @@
-<?php

-/**

- * PHPExcel

- *

- * Copyright (c) 2006 - 2012 PHPExcel

- *

- * This library is free software; you can redistribute it and/or

- * modify it under the terms of the GNU Lesser General Public

- * License as published by the Free Software Foundation; either

- * version 2.1 of the License, or (at your option) any later version.

- *

- * This library is distributed in the hope that it will be useful,

- * but WITHOUT ANY WARRANTY; without even the implied warranty of

- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU

- * Lesser General Public License for more details.

- *

- * You should have received a copy of the GNU Lesser General Public

- * License along with this library; if not, write to the Free Software

- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA

- *

- * @category	PHPExcel

- * @package		PHPExcel_Calculation

- * @copyright	Copyright (c) 2006 - 2012 PHPExcel (http://www.codeplex.com/PHPExcel)

- * @license		http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL

- * @version		1.7.8, 2012-10-12

- */

-

-

-/** PHPExcel root directory */

-if (!defined('PHPEXCEL_ROOT')) {

-	/**

-	 * @ignore

-	 */

-	define('PHPEXCEL_ROOT', dirname(__FILE__) . '/../../');

-	require(PHPEXCEL_ROOT . 'PHPExcel/Autoloader.php');

-}

-

-

-/**

- * PHPExcel_Calculation_MathTrig

- *

- * @category	PHPExcel

- * @package		PHPExcel_Calculation

- * @copyright	Copyright (c) 2006 - 2012 PHPExcel (http://www.codeplex.com/PHPExcel)

- */

-class PHPExcel_Calculation_MathTrig {

-

-	//

-	//	Private method to return an array of the factors of the input value

-	//

-	private static function _factors($value) {

-		$startVal = floor(sqrt($value));

-

-		$factorArray = array();

-		for ($i = $startVal; $i > 1; --$i) {

-			if (($value % $i) == 0) {

-				$factorArray = array_merge($factorArray,self::_factors($value / $i));

-				$factorArray = array_merge($factorArray,self::_factors($i));

-				if ($i <= sqrt($value)) {

-					break;

-				}

-			}

-		}

-		if (!empty($factorArray)) {

-			rsort($factorArray);

-			return $factorArray;

-		} else {

-			return array((integer) $value);

-		}

-	}	//	function _factors()

-

-

-	private static function _romanCut($num, $n) {

-		return ($num - ($num % $n ) ) / $n;

-	}	//	function _romanCut()

-

-

-	/**

-	 * ATAN2

-	 *

-	 * This function calculates the arc tangent of the two variables x and y. It is similar to

-	 *		calculating the arc tangent of y ÷ x, except that the signs of both arguments are used

-	 *		to determine the quadrant of the result.

-	 * The arctangent is the angle from the x-axis to a line containing the origin (0, 0) and a

-	 *		point with coordinates (xCoordinate, yCoordinate). The angle is given in radians between

-	 *		-pi and pi, excluding -pi.

-	 *

-	 * Note that the Excel ATAN2() function accepts its arguments in the reverse order to the standard

-	 *		PHP atan2() function, so we need to reverse them here before calling the PHP atan() function.

-	 *

-	 * Excel Function:

-	 *		ATAN2(xCoordinate,yCoordinate)

-	 *

-	 * @access	public

-	 * @category Mathematical and Trigonometric Functions

-	 * @param	float	$xCoordinate		The x-coordinate of the point.

-	 * @param	float	$yCoordinate		The y-coordinate of the point.

-	 * @return	float	The inverse tangent of the specified x- and y-coordinates.

-	 */

-	public static function ATAN2($xCoordinate = NULL, $yCoordinate = NULL) {

-		$xCoordinate	= PHPExcel_Calculation_Functions::flattenSingleValue($xCoordinate);

-		$yCoordinate	= PHPExcel_Calculation_Functions::flattenSingleValue($yCoordinate);

-

-		$xCoordinate	= ($xCoordinate !== NULL)	? $xCoordinate : 0.0;

-		$yCoordinate	= ($yCoordinate !== NULL)	? $yCoordinate : 0.0;

-

-		if (((is_numeric($xCoordinate)) || (is_bool($xCoordinate))) &&

-			((is_numeric($yCoordinate)))  || (is_bool($yCoordinate))) {

-			$xCoordinate	= (float) $xCoordinate;

-			$yCoordinate	= (float) $yCoordinate;

-

-			if (($xCoordinate == 0) && ($yCoordinate == 0)) {

-				return PHPExcel_Calculation_Functions::DIV0();

-			}

-

-			return atan2($yCoordinate, $xCoordinate);

-		}

-		return PHPExcel_Calculation_Functions::VALUE();

-	}	//	function ATAN2()

-

-

-	/**

-	 * CEILING

-	 *

-	 * Returns number rounded up, away from zero, to the nearest multiple of significance.

-	 *		For example, if you want to avoid using pennies in your prices and your product is

-	 *		priced at $4.42, use the formula =CEILING(4.42,0.05) to round prices up to the

-	 *		nearest nickel.

-	 *

-	 * Excel Function:

-	 *		CEILING(number[,significance])

-	 *

-	 * @access	public

-	 * @category Mathematical and Trigonometric Functions

-	 * @param	float	$number			The number you want to round.

-	 * @param	float	$significance	The multiple to which you want to round.

-	 * @return	float	Rounded Number

-	 */

-	public static function CEILING($number, $significance = NULL) {

-		$number			= PHPExcel_Calculation_Functions::flattenSingleValue($number);

-		$significance	= PHPExcel_Calculation_Functions::flattenSingleValue($significance);

-

-		if ((is_null($significance)) &&

-			(PHPExcel_Calculation_Functions::getCompatibilityMode() == PHPExcel_Calculation_Functions::COMPATIBILITY_GNUMERIC)) {

-			$significance = $number/abs($number);

-		}

-

-		if ((is_numeric($number)) && (is_numeric($significance))) {

-			if ($significance == 0.0) {

-				return 0.0;

-			} elseif (self::SIGN($number) == self::SIGN($significance)) {

-				return ceil($number / $significance) * $significance;

-			} else {

-				return PHPExcel_Calculation_Functions::NaN();

-			}

-		}

-		return PHPExcel_Calculation_Functions::VALUE();

-	}	//	function CEILING()

-

-

-	/**

-	 * COMBIN

-	 *

-	 * Returns the number of combinations for a given number of items. Use COMBIN to

-	 *		determine the total possible number of groups for a given number of items.

-	 *

-	 * Excel Function:

-	 *		COMBIN(numObjs,numInSet)

-	 *

-	 * @access	public

-	 * @category Mathematical and Trigonometric Functions

-	 * @param	int		$numObjs	Number of different objects

-	 * @param	int		$numInSet	Number of objects in each combination

-	 * @return	int		Number of combinations

-	 */

-	public static function COMBIN($numObjs, $numInSet) {

-		$numObjs	= PHPExcel_Calculation_Functions::flattenSingleValue($numObjs);

-		$numInSet	= PHPExcel_Calculation_Functions::flattenSingleValue($numInSet);

-

-		if ((is_numeric($numObjs)) && (is_numeric($numInSet))) {

-			if ($numObjs < $numInSet) {

-				return PHPExcel_Calculation_Functions::NaN();

-			} elseif ($numInSet < 0) {

-				return PHPExcel_Calculation_Functions::NaN();

-			}

-			return round(self::FACT($numObjs) / self::FACT($numObjs - $numInSet)) / self::FACT($numInSet);

-		}

-		return PHPExcel_Calculation_Functions::VALUE();

-	}	//	function COMBIN()

-

-

-	/**

-	 * EVEN

-	 *

-	 * Returns number rounded up to the nearest even integer.

-	 * You can use this function for processing items that come in twos. For example,

-	 *		a packing crate accepts rows of one or two items. The crate is full when

-	 *		the number of items, rounded up to the nearest two, matches the crate's

-	 *		capacity.

-	 *

-	 * Excel Function:

-	 *		EVEN(number)

-	 *

-	 * @access	public

-	 * @category Mathematical and Trigonometric Functions

-	 * @param	float	$number			Number to round

-	 * @return	int		Rounded Number

-	 */

-	public static function EVEN($number) {

-		$number	= PHPExcel_Calculation_Functions::flattenSingleValue($number);

-

-		if (is_null($number)) {

-			return 0;

-		} elseif (is_bool($number)) {

-			$number = (int) $number;

-		}

-

-		if (is_numeric($number)) {

-			$significance = 2 * self::SIGN($number);

-			return (int) self::CEILING($number,$significance);

-		}

-		return PHPExcel_Calculation_Functions::VALUE();

-	}	//	function EVEN()

-

-

-	/**

-	 * FACT

-	 *

-	 * Returns the factorial of a number.

-	 * The factorial of a number is equal to 1*2*3*...* number.

-	 *

-	 * Excel Function:

-	 *		FACT(factVal)

-	 *

-	 * @access	public

-	 * @category Mathematical and Trigonometric Functions

-	 * @param	float	$factVal	Factorial Value

-	 * @return	int		Factorial

-	 */

-	public static function FACT($factVal) {

-		$factVal	= PHPExcel_Calculation_Functions::flattenSingleValue($factVal);

-

-		if (is_numeric($factVal)) {

-			if ($factVal < 0) {

-				return PHPExcel_Calculation_Functions::NaN();

-			}

-			$factLoop = floor($factVal);

-			if (PHPExcel_Calculation_Functions::getCompatibilityMode() == PHPExcel_Calculation_Functions::COMPATIBILITY_GNUMERIC) {

-				if ($factVal > $factLoop) {

-					return PHPExcel_Calculation_Functions::NaN();

-				}

-			}

-

-			$factorial = 1;

-			while ($factLoop > 1) {

-				$factorial *= $factLoop--;

-			}

-			return $factorial ;

-		}

-		return PHPExcel_Calculation_Functions::VALUE();

-	}	//	function FACT()

-

-

-	/**

-	 * FACTDOUBLE

-	 *

-	 * Returns the double factorial of a number.

-	 *

-	 * Excel Function:

-	 *		FACTDOUBLE(factVal)

-	 *

-	 * @access	public

-	 * @category Mathematical and Trigonometric Functions

-	 * @param	float	$factVal	Factorial Value

-	 * @return	int		Double Factorial

-	 */

-	public static function FACTDOUBLE($factVal) {

-		$factLoop	= PHPExcel_Calculation_Functions::flattenSingleValue($factVal);

-

-		if (is_numeric($factLoop)) {

-			$factLoop	= floor($factLoop);

-			if ($factVal < 0) {

-				return PHPExcel_Calculation_Functions::NaN();

-			}

-			$factorial = 1;

-			while ($factLoop > 1) {

-				$factorial *= $factLoop--;

-				--$factLoop;

-			}

-			return $factorial ;

-		}

-		return PHPExcel_Calculation_Functions::VALUE();

-	}	//	function FACTDOUBLE()

-

-

-	/**

-	 * FLOOR

-	 *

-	 * Rounds number down, toward zero, to the nearest multiple of significance.

-	 *

-	 * Excel Function:

-	 *		FLOOR(number[,significance])

-	 *

-	 * @access	public

-	 * @category Mathematical and Trigonometric Functions

-	 * @param	float	$number			Number to round

-	 * @param	float	$significance	Significance

-	 * @return	float	Rounded Number

-	 */

-	public static function FLOOR($number, $significance = NULL) {

-		$number			= PHPExcel_Calculation_Functions::flattenSingleValue($number);

-		$significance	= PHPExcel_Calculation_Functions::flattenSingleValue($significance);

-

-		if ((is_null($significance)) && (PHPExcel_Calculation_Functions::getCompatibilityMode() == PHPExcel_Calculation_Functions::COMPATIBILITY_GNUMERIC)) {

-			$significance = $number/abs($number);

-		}

-

-		if ((is_numeric($number)) && (is_numeric($significance))) {

-			if ((float) $significance == 0.0) {

-				return PHPExcel_Calculation_Functions::DIV0();

-			}

-			if (self::SIGN($number) == self::SIGN($significance)) {

-				return floor($number / $significance) * $significance;

-			} else {

-				return PHPExcel_Calculation_Functions::NaN();

-			}

-		}

-		return PHPExcel_Calculation_Functions::VALUE();

-	}	//	function FLOOR()

-

-

-	/**

-	 * GCD

-	 *

-	 * Returns the greatest common divisor of a series of numbers.

-	 * The greatest common divisor is the largest integer that divides both

-	 *		number1 and number2 without a remainder.

-	 *

-	 * Excel Function:

-	 *		GCD(number1[,number2[, ...]])

-	 *

-	 * @access	public

-	 * @category Mathematical and Trigonometric Functions

-	 * @param	mixed	$arg,...		Data values

-	 * @return	integer					Greatest Common Divisor

-	 */

-	public static function GCD() {

-		$returnValue = 1;

-		$allValuesFactors = array();

-		// Loop through arguments

-		foreach(PHPExcel_Calculation_Functions::flattenArray(func_get_args()) as $value) {

-			if (!is_numeric($value)) {

-				return PHPExcel_Calculation_Functions::VALUE();

-			} elseif ($value == 0) {

-				continue;

-			} elseif($value < 0) {

-				return PHPExcel_Calculation_Functions::NaN();

-			}

-			$myFactors = self::_factors($value);

-			$myCountedFactors = array_count_values($myFactors);

-			$allValuesFactors[] = $myCountedFactors;

-		}

-		$allValuesCount = count($allValuesFactors);

-		if ($allValuesCount == 0) {

-			return 0;

-		}

-

-		$mergedArray = $allValuesFactors[0];

-		for ($i=1;$i < $allValuesCount; ++$i) {

-			$mergedArray = array_intersect_key($mergedArray,$allValuesFactors[$i]);

-		}

-		$mergedArrayValues = count($mergedArray);

-		if ($mergedArrayValues == 0) {

-			return $returnValue;

-		} elseif ($mergedArrayValues > 1) {

-			foreach($mergedArray as $mergedKey => $mergedValue) {

-				foreach($allValuesFactors as $highestPowerTest) {

-					foreach($highestPowerTest as $testKey => $testValue) {

-						if (($testKey == $mergedKey) && ($testValue < $mergedValue)) {

-							$mergedArray[$mergedKey] = $testValue;

-							$mergedValue = $testValue;

-						}

-					}

-				}

-			}

-

-			$returnValue = 1;

-			foreach($mergedArray as $key => $value) {

-				$returnValue *= pow($key,$value);

-			}

-			return $returnValue;

-		} else {

-			$keys = array_keys($mergedArray);

-			$key = $keys[0];

-			$value = $mergedArray[$key];

-			foreach($allValuesFactors as $testValue) {

-				foreach($testValue as $mergedKey => $mergedValue) {

-					if (($mergedKey == $key) && ($mergedValue < $value)) {

-						$value = $mergedValue;

-					}

-				}

-			}

-			return pow($key,$value);

-		}

-	}	//	function GCD()

-

-

-	/**

-	 * INT

-	 *

-	 * Casts a floating point value to an integer

-	 *

-	 * Excel Function:

-	 *		INT(number)

-	 *

-	 * @access	public

-	 * @category Mathematical and Trigonometric Functions

-	 * @param	float	$number			Number to cast to an integer

-	 * @return	integer	Integer value

-	 */

-	public static function INT($number) {

-		$number	= PHPExcel_Calculation_Functions::flattenSingleValue($number);

-

-		if (is_null($number)) {

-			return 0;

-		} elseif (is_bool($number)) {

-			return (int) $number;

-		}

-		if (is_numeric($number)) {

-			return (int) floor($number);

-		}

-		return PHPExcel_Calculation_Functions::VALUE();

-	}	//	function INT()

-

-

-	/**

-	 * LCM

-	 *

-	 * Returns the lowest common multiplier of a series of numbers

-	 * The least common multiple is the smallest positive integer that is a multiple

-	 * of all integer arguments number1, number2, and so on. Use LCM to add fractions

-	 * with different denominators.

-	 *

-	 * Excel Function:

-	 *		LCM(number1[,number2[, ...]])

-	 *

-	 * @access	public

-	 * @category Mathematical and Trigonometric Functions

-	 * @param	mixed	$arg,...		Data values

-	 * @return	int		Lowest Common Multiplier

-	 */

-	public static function LCM() {

-		$returnValue = 1;

-		$allPoweredFactors = array();

-		// Loop through arguments

-		foreach(PHPExcel_Calculation_Functions::flattenArray(func_get_args()) as $value) {

-			if (!is_numeric($value)) {

-				return PHPExcel_Calculation_Functions::VALUE();

-			}

-			if ($value == 0) {

-				return 0;

-			} elseif ($value < 0) {

-				return PHPExcel_Calculation_Functions::NaN();

-			}

-			$myFactors = self::_factors(floor($value));

-			$myCountedFactors = array_count_values($myFactors);

-			$myPoweredFactors = array();

-			foreach($myCountedFactors as $myCountedFactor => $myCountedPower) {

-				$myPoweredFactors[$myCountedFactor] = pow($myCountedFactor,$myCountedPower);

-			}

-			foreach($myPoweredFactors as $myPoweredValue => $myPoweredFactor) {

-				if (array_key_exists($myPoweredValue,$allPoweredFactors)) {

-					if ($allPoweredFactors[$myPoweredValue] < $myPoweredFactor) {

-						$allPoweredFactors[$myPoweredValue] = $myPoweredFactor;

-					}

-				} else {

-					$allPoweredFactors[$myPoweredValue] = $myPoweredFactor;

-				}

-			}

-		}

-		foreach($allPoweredFactors as $allPoweredFactor) {

-			$returnValue *= (integer) $allPoweredFactor;

-		}

-		return $returnValue;

-	}	//	function LCM()

-

-

-	/**

-	 * LOG_BASE

-	 *

-	 * Returns the logarithm of a number to a specified base. The default base is 10.

-	 *

-	 * Excel Function:

-	 *		LOG(number[,base])

-	 *

-	 * @access	public

-	 * @category Mathematical and Trigonometric Functions

-	 * @param	float	$value		The positive real number for which you want the logarithm

-	 * @param	float	$base		The base of the logarithm. If base is omitted, it is assumed to be 10.

-	 * @return	float

-	 */

-	public static function LOG_BASE($number = NULL, $base = 10) {

-		$number	= PHPExcel_Calculation_Functions::flattenSingleValue($number);

-		$base	= (is_null($base))	? 10 :	(float) PHPExcel_Calculation_Functions::flattenSingleValue($base);

-

-		if ((!is_numeric($base)) || (!is_numeric($number)))

-			return PHPExcel_Calculation_Functions::VALUE();

-		if (($base <= 0) || ($number <= 0))

-			return PHPExcel_Calculation_Functions::NaN();

-		return log($number, $base);

-	}	//	function LOG_BASE()

-

-

-	/**

-	 * MDETERM

-	 *

-	 * Returns the matrix determinant of an array.

-	 *

-	 * Excel Function:

-	 *		MDETERM(array)

-	 *

-	 * @access	public

-	 * @category Mathematical and Trigonometric Functions

-	 * @param	array	$matrixValues	A matrix of values

-	 * @return	float

-	 */

-	public static function MDETERM($matrixValues) {

-		$matrixData = array();

-		if (!is_array($matrixValues)) { $matrixValues = array(array($matrixValues)); }

-

-		$row = $maxColumn = 0;

-		foreach($matrixValues as $matrixRow) {

-			if (!is_array($matrixRow)) { $matrixRow = array($matrixRow); }

-			$column = 0;

-			foreach($matrixRow as $matrixCell) {

-				if ((is_string($matrixCell)) || ($matrixCell === null)) {

-					return PHPExcel_Calculation_Functions::VALUE();

-				}

-				$matrixData[$column][$row] = $matrixCell;

-				++$column;

-			}

-			if ($column > $maxColumn) { $maxColumn = $column; }

-			++$row;

-		}

-		if ($row != $maxColumn) { return PHPExcel_Calculation_Functions::VALUE(); }

-

-		try {

-			$matrix = new PHPExcel_Shared_JAMA_Matrix($matrixData);

-			return $matrix->det();

-		} catch (Exception $ex) {

-			return PHPExcel_Calculation_Functions::VALUE();

-		}

-	}	//	function MDETERM()

-

-

-	/**

-	 * MINVERSE

-	 *

-	 * Returns the inverse matrix for the matrix stored in an array.

-	 *

-	 * Excel Function:

-	 *		MINVERSE(array)

-	 *

-	 * @access	public

-	 * @category Mathematical and Trigonometric Functions

-	 * @param	array	$matrixValues	A matrix of values

-	 * @return	array

-	 */

-	public static function MINVERSE($matrixValues) {

-		$matrixData = array();

-		if (!is_array($matrixValues)) { $matrixValues = array(array($matrixValues)); }

-

-		$row = $maxColumn = 0;

-		foreach($matrixValues as $matrixRow) {

-			if (!is_array($matrixRow)) { $matrixRow = array($matrixRow); }

-			$column = 0;

-			foreach($matrixRow as $matrixCell) {

-				if ((is_string($matrixCell)) || ($matrixCell === null)) {

-					return PHPExcel_Calculation_Functions::VALUE();

-				}

-				$matrixData[$column][$row] = $matrixCell;

-				++$column;

-			}

-			if ($column > $maxColumn) { $maxColumn = $column; }

-			++$row;

-		}

-		if ($row != $maxColumn) { return PHPExcel_Calculation_Functions::VALUE(); }

-

-		try {

-			$matrix = new PHPExcel_Shared_JAMA_Matrix($matrixData);

-			return $matrix->inverse()->getArray();

-		} catch (Exception $ex) {

-			return PHPExcel_Calculation_Functions::VALUE();

-		}

-	}	//	function MINVERSE()

-

-

-	/**

-	 * MMULT

-	 *

-	 * @param	array	$matrixData1	A matrix of values

-	 * @param	array	$matrixData2	A matrix of values

-	 * @return	array

-	 */

-	public static function MMULT($matrixData1,$matrixData2) {

-		$matrixAData = $matrixBData = array();

-		if (!is_array($matrixData1)) { $matrixData1 = array(array($matrixData1)); }

-		if (!is_array($matrixData2)) { $matrixData2 = array(array($matrixData2)); }

-

-		$rowA = 0;

-		foreach($matrixData1 as $matrixRow) {

-			if (!is_array($matrixRow)) { $matrixRow = array($matrixRow); }

-			$columnA = 0;

-			foreach($matrixRow as $matrixCell) {

-				if ((is_string($matrixCell)) || ($matrixCell === null)) {

-					return PHPExcel_Calculation_Functions::VALUE();

-				}

-				$matrixAData[$rowA][$columnA] = $matrixCell;

-				++$columnA;

-			}

-			++$rowA;

-		}

-		try {

-			$matrixA = new PHPExcel_Shared_JAMA_Matrix($matrixAData);

-			$rowB = 0;

-			foreach($matrixData2 as $matrixRow) {

-				if (!is_array($matrixRow)) { $matrixRow = array($matrixRow); }

-				$columnB = 0;

-				foreach($matrixRow as $matrixCell) {

-					if ((is_string($matrixCell)) || ($matrixCell === null)) {

-						return PHPExcel_Calculation_Functions::VALUE();

-					}

-					$matrixBData[$rowB][$columnB] = $matrixCell;

-					++$columnB;

-				}

-				++$rowB;

-			}

-			$matrixB = new PHPExcel_Shared_JAMA_Matrix($matrixBData);

-

-			if (($rowA != $columnB) || ($rowB != $columnA)) {

-				return PHPExcel_Calculation_Functions::VALUE();

-			}

-

-			return $matrixA->times($matrixB)->getArray();

-		} catch (Exception $ex) {

-			return PHPExcel_Calculation_Functions::VALUE();

-		}

-	}	//	function MMULT()

-

-

-	/**

-	 * MOD

-	 *

-	 * @param	int		$a		Dividend

-	 * @param	int		$b		Divisor

-	 * @return	int		Remainder

-	 */

-	public static function MOD($a = 1, $b = 1) {

-		$a		= PHPExcel_Calculation_Functions::flattenSingleValue($a);

-		$b		= PHPExcel_Calculation_Functions::flattenSingleValue($b);

-

-		if ($b == 0.0) {

-			return PHPExcel_Calculation_Functions::DIV0();

-		} elseif (($a < 0.0) && ($b > 0.0)) {

-			return $b - fmod(abs($a),$b);

-		} elseif (($a > 0.0) && ($b < 0.0)) {

-			return $b + fmod($a,abs($b));

-		}

-

-		return fmod($a,$b);

-	}	//	function MOD()

-

-

-	/**

-	 * MROUND

-	 *

-	 * Rounds a number to the nearest multiple of a specified value

-	 *

-	 * @param	float	$number			Number to round

-	 * @param	int		$multiple		Multiple to which you want to round $number

-	 * @return	float	Rounded Number

-	 */

-	public static function MROUND($number,$multiple) {

-		$number		= PHPExcel_Calculation_Functions::flattenSingleValue($number);

-		$multiple	= PHPExcel_Calculation_Functions::flattenSingleValue($multiple);

-

-		if ((is_numeric($number)) && (is_numeric($multiple))) {

-			if ($multiple == 0) {

-				return 0;

-			}

-			if ((self::SIGN($number)) == (self::SIGN($multiple))) {

-				$multiplier = 1 / $multiple;

-				return round($number * $multiplier) / $multiplier;

-			}

-			return PHPExcel_Calculation_Functions::NaN();

-		}

-		return PHPExcel_Calculation_Functions::VALUE();

-	}	//	function MROUND()

-

-

-	/**

-	 * MULTINOMIAL

-	 *

-	 * Returns the ratio of the factorial of a sum of values to the product of factorials.

-	 *

-	 * @param	array of mixed		Data Series

-	 * @return	float

-	 */

-	public static function MULTINOMIAL() {

-		$summer = 0;

-		$divisor = 1;

-		// Loop through arguments

-		foreach (PHPExcel_Calculation_Functions::flattenArray(func_get_args()) as $arg) {

-			// Is it a numeric value?

-			if (is_numeric($arg)) {

-				if ($arg < 1) {

-					return PHPExcel_Calculation_Functions::NaN();

-				}

-				$summer += floor($arg);

-				$divisor *= self::FACT($arg);

-			} else {

-				return PHPExcel_Calculation_Functions::VALUE();

-			}

-		}

-

-		// Return

-		if ($summer > 0) {

-			$summer = self::FACT($summer);

-			return $summer / $divisor;

-		}

-		return 0;

-	}	//	function MULTINOMIAL()

-

-

-	/**

-	 * ODD

-	 *

-	 * Returns number rounded up to the nearest odd integer.

-	 *

-	 * @param	float	$number			Number to round

-	 * @return	int		Rounded Number

-	 */

-	public static function ODD($number) {

-		$number	= PHPExcel_Calculation_Functions::flattenSingleValue($number);

-

-		if (is_null($number)) {

-			return 1;

-		} elseif (is_bool($number)) {

-			$number = (int) $number;

-		}

-

-		if (is_numeric($number)) {

-			$significance = self::SIGN($number);

-			if ($significance == 0) {

-				return 1;

-			}

-

-			$result = self::CEILING($number,$significance);

-			if ($result == self::EVEN($result)) {

-				$result += $significance;

-			}

-

-			return (int) $result;

-		}

-		return PHPExcel_Calculation_Functions::VALUE();

-	}	//	function ODD()

-

-

-	/**

-	 * POWER

-	 *

-	 * Computes x raised to the power y.

-	 *

-	 * @param	float		$x

-	 * @param	float		$y

-	 * @return	float

-	 */

-	public static function POWER($x = 0, $y = 2) {

-		$x	= PHPExcel_Calculation_Functions::flattenSingleValue($x);

-		$y	= PHPExcel_Calculation_Functions::flattenSingleValue($y);

-

-		// Validate parameters

-		if ($x == 0.0 && $y == 0.0) {

-			return PHPExcel_Calculation_Functions::NaN();

-		} elseif ($x == 0.0 && $y < 0.0) {

-			return PHPExcel_Calculation_Functions::DIV0();

-		}

-

-		// Return

-		$result = pow($x, $y);

-		return (!is_nan($result) && !is_infinite($result)) ? $result : PHPExcel_Calculation_Functions::NaN();

-	}	//	function POWER()

-

-

-	/**

-	 * PRODUCT

-	 *

-	 * PRODUCT returns the product of all the values and cells referenced in the argument list.

-	 *

-	 * Excel Function:

-	 *		PRODUCT(value1[,value2[, ...]])

-	 *

-	 * @access	public

-	 * @category Mathematical and Trigonometric Functions

-	 * @param	mixed		$arg,...		Data values

-	 * @return	float

-	 */

-	public static function PRODUCT() {

-		// Return value

-		$returnValue = null;

-

-		// Loop through arguments

-		foreach (PHPExcel_Calculation_Functions::flattenArray(func_get_args()) as $arg) {

-			// Is it a numeric value?

-			if ((is_numeric($arg)) && (!is_string($arg))) {

-				if (is_null($returnValue)) {

-					$returnValue = $arg;

-				} else {

-					$returnValue *= $arg;

-				}

-			}

-		}

-

-		// Return

-		if (is_null($returnValue)) {

-			return 0;

-		}

-		return $returnValue;

-	}	//	function PRODUCT()

-

-

-	/**

-	 * QUOTIENT

-	 *

-	 * QUOTIENT function returns the integer portion of a division. Numerator is the divided number

-	 *		and denominator is the divisor.

-	 *

-	 * Excel Function:

-	 *		QUOTIENT(value1[,value2[, ...]])

-	 *

-	 * @access	public

-	 * @category Mathematical and Trigonometric Functions

-	 * @param	mixed		$arg,...		Data values

-	 * @return	float

-	 */

-	public static function QUOTIENT() {

-		// Return value

-		$returnValue = null;

-

-		// Loop through arguments

-		foreach (PHPExcel_Calculation_Functions::flattenArray(func_get_args()) as $arg) {

-			// Is it a numeric value?

-			if ((is_numeric($arg)) && (!is_string($arg))) {

-				if (is_null($returnValue)) {

-					$returnValue = ($arg == 0) ? 0 : $arg;

-				} else {

-					if (($returnValue == 0) || ($arg == 0)) {

-						$returnValue = 0;

-					} else {

-						$returnValue /= $arg;

-					}

-				}

-			}

-		}

-

-		// Return

-		return intval($returnValue);

-	}	//	function QUOTIENT()

-

-

-	/**

-	 * RAND

-	 *

-	 * @param	int		$min	Minimal value

-	 * @param	int		$max	Maximal value

-	 * @return	int		Random number

-	 */

-	public static function RAND($min = 0, $max = 0) {

-		$min		= PHPExcel_Calculation_Functions::flattenSingleValue($min);

-		$max		= PHPExcel_Calculation_Functions::flattenSingleValue($max);

-

-		if ($min == 0 && $max == 0) {

-			return (rand(0,10000000)) / 10000000;

-		} else {

-			return rand($min, $max);

-		}

-	}	//	function RAND()

-

-

-	public static function ROMAN($aValue, $style=0) {

-		$aValue	= PHPExcel_Calculation_Functions::flattenSingleValue($aValue);

-		$style	= (is_null($style))	? 0 :	(integer) PHPExcel_Calculation_Functions::flattenSingleValue($style);

-		if ((!is_numeric($aValue)) || ($aValue < 0) || ($aValue >= 4000)) {

-			return PHPExcel_Calculation_Functions::VALUE();

-		}

-		$aValue = (integer) $aValue;

-		if ($aValue == 0) {

-			return '';

-		}

-

-		$mill = Array('', 'M', 'MM', 'MMM', 'MMMM', 'MMMMM');

-		$cent = Array('', 'C', 'CC', 'CCC', 'CD', 'D', 'DC', 'DCC', 'DCCC', 'CM');

-		$tens = Array('', 'X', 'XX', 'XXX', 'XL', 'L', 'LX', 'LXX', 'LXXX', 'XC');

-		$ones = Array('', 'I', 'II', 'III', 'IV', 'V', 'VI', 'VII', 'VIII', 'IX');

-

-		$roman = '';

-		while ($aValue > 5999) {

-			$roman .= 'M';

-			$aValue -= 1000;

-		}

-		$m = self::_romanCut($aValue, 1000);	$aValue %= 1000;

-		$c = self::_romanCut($aValue, 100);		$aValue %= 100;

-		$t = self::_romanCut($aValue, 10);		$aValue %= 10;

-

-		return $roman.$mill[$m].$cent[$c].$tens[$t].$ones[$aValue];

-	}	//	function ROMAN()

-

-

-	/**

-	 * ROUNDUP

-	 *

-	 * Rounds a number up to a specified number of decimal places

-	 *

-	 * @param	float	$number			Number to round

-	 * @param	int		$digits			Number of digits to which you want to round $number

-	 * @return	float	Rounded Number

-	 */

-	public static function ROUNDUP($number,$digits) {

-		$number	= PHPExcel_Calculation_Functions::flattenSingleValue($number);

-		$digits	= PHPExcel_Calculation_Functions::flattenSingleValue($digits);

-

-		if ((is_numeric($number)) && (is_numeric($digits))) {

-			$significance = pow(10,(int) $digits);

-			if ($number < 0.0) {

-				return floor($number * $significance) / $significance;

-			} else {

-				return ceil($number * $significance) / $significance;

-			}

-		}

-		return PHPExcel_Calculation_Functions::VALUE();

-	}	//	function ROUNDUP()

-

-

-	/**

-	 * ROUNDDOWN

-	 *

-	 * Rounds a number down to a specified number of decimal places

-	 *

-	 * @param	float	$number			Number to round

-	 * @param	int		$digits			Number of digits to which you want to round $number

-	 * @return	float	Rounded Number

-	 */

-	public static function ROUNDDOWN($number,$digits) {

-		$number	= PHPExcel_Calculation_Functions::flattenSingleValue($number);

-		$digits	= PHPExcel_Calculation_Functions::flattenSingleValue($digits);

-

-		if ((is_numeric($number)) && (is_numeric($digits))) {

-			$significance = pow(10,(int) $digits);

-			if ($number < 0.0) {

-				return ceil($number * $significance) / $significance;

-			} else {

-				return floor($number * $significance) / $significance;

-			}

-		}

-		return PHPExcel_Calculation_Functions::VALUE();

-	}	//	function ROUNDDOWN()

-

-

-	/**

-	 * SERIESSUM

-	 *

-	 * Returns the sum of a power series

-	 *

-	 * @param	float			$x	Input value to the power series

-	 * @param	float			$n	Initial power to which you want to raise $x

-	 * @param	float			$m	Step by which to increase $n for each term in the series

-	 * @param	array of mixed		Data Series

-	 * @return	float

-	 */

-	public static function SERIESSUM() {

-		// Return value

-		$returnValue = 0;

-

-		// Loop through arguments

-		$aArgs = PHPExcel_Calculation_Functions::flattenArray(func_get_args());

-

-		$x = array_shift($aArgs);

-		$n = array_shift($aArgs);

-		$m = array_shift($aArgs);

-

-		if ((is_numeric($x)) && (is_numeric($n)) && (is_numeric($m))) {

-			// Calculate

-			$i = 0;

-			foreach($aArgs as $arg) {

-				// Is it a numeric value?

-				if ((is_numeric($arg)) && (!is_string($arg))) {

-					$returnValue += $arg * pow($x,$n + ($m * $i++));

-				} else {

-					return PHPExcel_Calculation_Functions::VALUE();

-				}

-			}

-			// Return

-			return $returnValue;

-		}

-		return PHPExcel_Calculation_Functions::VALUE();

-	}	//	function SERIESSUM()

-

-

-	/**

-	 * SIGN

-	 *

-	 * Determines the sign of a number. Returns 1 if the number is positive, zero (0)

-	 *		if the number is 0, and -1 if the number is negative.

-	 *

-	 * @param	float	$number			Number to round

-	 * @return	int		sign value

-	 */

-	public static function SIGN($number) {

-		$number	= PHPExcel_Calculation_Functions::flattenSingleValue($number);

-

-		if (is_bool($number))

-			return (int) $number;

-		if (is_numeric($number)) {

-			if ($number == 0.0) {

-				return 0;

-			}

-			return $number / abs($number);

-		}

-		return PHPExcel_Calculation_Functions::VALUE();

-	}	//	function SIGN()

-

-

-	/**

-	 * SQRTPI

-	 *

-	 * Returns the square root of (number * pi).

-	 *

-	 * @param	float	$number		Number

-	 * @return	float	Square Root of Number * Pi

-	 */

-	public static function SQRTPI($number) {

-		$number	= PHPExcel_Calculation_Functions::flattenSingleValue($number);

-

-		if (is_numeric($number)) {

-			if ($number < 0) {

-				return PHPExcel_Calculation_Functions::NaN();

-			}

-			return sqrt($number * M_PI) ;

-		}

-		return PHPExcel_Calculation_Functions::VALUE();

-	}	//	function SQRTPI()

-

-

-	/**

-	 * SUBTOTAL

-	 *

-	 * Returns a subtotal in a list or database.

-	 *

-	 * @param	int		the number 1 to 11 that specifies which function to

-	 *					use in calculating subtotals within a list.

-	 * @param	array of mixed		Data Series

-	 * @return	float

-	 */

-	public static function SUBTOTAL() {

-		$aArgs = PHPExcel_Calculation_Functions::flattenArray(func_get_args());

-

-		// Calculate

-		$subtotal = array_shift($aArgs);

-

-		if ((is_numeric($subtotal)) && (!is_string($subtotal))) {

-			switch($subtotal) {

-				case 1	:

-					return PHPExcel_Calculation_Statistical::AVERAGE($aArgs);

-					break;

-				case 2	:

-					return PHPExcel_Calculation_Statistical::COUNT($aArgs);

-					break;

-				case 3	:

-					return PHPExcel_Calculation_Statistical::COUNTA($aArgs);

-					break;

-				case 4	:

-					return PHPExcel_Calculation_Statistical::MAX($aArgs);

-					break;

-				case 5	:

-					return PHPExcel_Calculation_Statistical::MIN($aArgs);

-					break;

-				case 6	:

-					return self::PRODUCT($aArgs);

-					break;

-				case 7	:

-					return PHPExcel_Calculation_Statistical::STDEV($aArgs);

-					break;

-				case 8	:

-					return PHPExcel_Calculation_Statistical::STDEVP($aArgs);

-					break;

-				case 9	:

-					return self::SUM($aArgs);

-					break;

-				case 10	:

-					return PHPExcel_Calculation_Statistical::VARFunc($aArgs);

-					break;

-				case 11	:

-					return PHPExcel_Calculation_Statistical::VARP($aArgs);

-					break;

-			}

-		}

-		return PHPExcel_Calculation_Functions::VALUE();

-	}	//	function SUBTOTAL()

-

-

-	/**

-	 * SUM

-	 *

-	 * SUM computes the sum of all the values and cells referenced in the argument list.

-	 *

-	 * Excel Function:

-	 *		SUM(value1[,value2[, ...]])

-	 *

-	 * @access	public

-	 * @category Mathematical and Trigonometric Functions

-	 * @param	mixed		$arg,...		Data values

-	 * @return	float

-	 */

-	public static function SUM() {

-		// Return value

-		$returnValue = 0;

-

-		// Loop through the arguments

-		foreach (PHPExcel_Calculation_Functions::flattenArray(func_get_args()) as $arg) {

-			// Is it a numeric value?

-			if ((is_numeric($arg)) && (!is_string($arg))) {

-				$returnValue += $arg;

-			}

-		}

-

-		// Return

-		return $returnValue;

-	}	//	function SUM()

-

-

-	/**

-	 * SUMIF

-	 *

-	 * Counts the number of cells that contain numbers within the list of arguments

-	 *

-	 * Excel Function:

-	 *		SUMIF(value1[,value2[, ...]],condition)

-	 *

-	 * @access	public

-	 * @category Mathematical and Trigonometric Functions

-	 * @param	mixed		$arg,...		Data values

-	 * @param	string		$condition		The criteria that defines which cells will be summed.

-	 * @return	float

-	 */

-	public static function SUMIF($aArgs,$condition,$sumArgs = array()) {

-		// Return value

-		$returnValue = 0;

-

-		$aArgs = PHPExcel_Calculation_Functions::flattenArray($aArgs);

-		$sumArgs = PHPExcel_Calculation_Functions::flattenArray($sumArgs);

-		if (empty($sumArgs)) {

-			$sumArgs = $aArgs;

-		}

-		$condition = PHPExcel_Calculation_Functions::_ifCondition($condition);

-		// Loop through arguments

-		foreach ($aArgs as $key => $arg) {

-			if (!is_numeric($arg)) { $arg = PHPExcel_Calculation::_wrapResult(strtoupper($arg)); }

-			$testCondition = '='.$arg.$condition;

-			if (PHPExcel_Calculation::getInstance()->_calculateFormulaValue($testCondition)) {

-				// Is it a value within our criteria

-				$returnValue += $sumArgs[$key];

-			}

-		}

-

-		// Return

-		return $returnValue;

-	}	//	function SUMIF()

-

-

-	/**

-	 * SUMPRODUCT

-	 *

-	 * Excel Function:

-	 *		SUMPRODUCT(value1[,value2[, ...]])

-	 *

-	 * @access	public

-	 * @category Mathematical and Trigonometric Functions

-	 * @param	mixed		$arg,...		Data values

-	 * @return	float

-	 */

-	public static function SUMPRODUCT() {

-		$arrayList = func_get_args();

-

-		$wrkArray = PHPExcel_Calculation_Functions::flattenArray(array_shift($arrayList));

-		$wrkCellCount = count($wrkArray);

-

-		for ($i=0; $i< $wrkCellCount; ++$i) {

-			if ((!is_numeric($wrkArray[$i])) || (is_string($wrkArray[$i]))) {

-				$wrkArray[$i] = 0;

-			}

-		}

-

-		foreach($arrayList as $matrixData) {

-			$array2 = PHPExcel_Calculation_Functions::flattenArray($matrixData);

-			$count = count($array2);

-			if ($wrkCellCount != $count) {

-				return PHPExcel_Calculation_Functions::VALUE();

-			}

-

-			foreach ($array2 as $i => $val) {

-				if ((!is_numeric($val)) || (is_string($val))) {

-					$val = 0;

-				}

-				$wrkArray[$i] *= $val;

-			}

-		}

-

-		return array_sum($wrkArray);

-	}	//	function SUMPRODUCT()

-

-

-	/**

-	 * SUMSQ

-	 *

-	 * SUMSQ returns the sum of the squares of the arguments

-	 *

-	 * Excel Function:

-	 *		SUMSQ(value1[,value2[, ...]])

-	 *

-	 * @access	public

-	 * @category Mathematical and Trigonometric Functions

-	 * @param	mixed		$arg,...		Data values

-	 * @return	float

-	 */

-	public static function SUMSQ() {

-		// Return value

-		$returnValue = 0;

-

-		// Loop through arguments

-		foreach (PHPExcel_Calculation_Functions::flattenArray(func_get_args()) as $arg) {

-			// Is it a numeric value?

-			if ((is_numeric($arg)) && (!is_string($arg))) {

-				$returnValue += ($arg * $arg);

-			}

-		}

-

-		// Return

-		return $returnValue;

-	}	//	function SUMSQ()

-

-

-	/**

-	 * SUMX2MY2

-	 *

-	 * @param	mixed	$value	Value to check

-	 * @return	float

-	 */

-	public static function SUMX2MY2($matrixData1,$matrixData2) {

-		$array1 = PHPExcel_Calculation_Functions::flattenArray($matrixData1);

-		$array2 = PHPExcel_Calculation_Functions::flattenArray($matrixData2);

-		$count1 = count($array1);

-		$count2 = count($array2);

-		if ($count1 < $count2) {

-			$count = $count1;

-		} else {

-			$count = $count2;

-		}

-

-		$result = 0;

-		for ($i = 0; $i < $count; ++$i) {

-			if (((is_numeric($array1[$i])) && (!is_string($array1[$i]))) &&

-				((is_numeric($array2[$i])) && (!is_string($array2[$i])))) {

-				$result += ($array1[$i] * $array1[$i]) - ($array2[$i] * $array2[$i]);

-			}

-		}

-

-		return $result;

-	}	//	function SUMX2MY2()

-

-

-	/**

-	 * SUMX2PY2

-	 *

-	 * @param	mixed	$value	Value to check

-	 * @return	float

-	 */

-	public static function SUMX2PY2($matrixData1,$matrixData2) {

-		$array1 = PHPExcel_Calculation_Functions::flattenArray($matrixData1);

-		$array2 = PHPExcel_Calculation_Functions::flattenArray($matrixData2);

-		$count1 = count($array1);

-		$count2 = count($array2);

-		if ($count1 < $count2) {

-			$count = $count1;

-		} else {

-			$count = $count2;

-		}

-

-		$result = 0;

-		for ($i = 0; $i < $count; ++$i) {

-			if (((is_numeric($array1[$i])) && (!is_string($array1[$i]))) &&

-				((is_numeric($array2[$i])) && (!is_string($array2[$i])))) {

-				$result += ($array1[$i] * $array1[$i]) + ($array2[$i] * $array2[$i]);

-			}

-		}

-

-		return $result;

-	}	//	function SUMX2PY2()

-

-

-	/**

-	 * SUMXMY2

-	 *

-	 * @param	mixed	$value	Value to check

-	 * @return	float

-	 */

-	public static function SUMXMY2($matrixData1,$matrixData2) {

-		$array1 = PHPExcel_Calculation_Functions::flattenArray($matrixData1);

-		$array2 = PHPExcel_Calculation_Functions::flattenArray($matrixData2);

-		$count1 = count($array1);

-		$count2 = count($array2);

-		if ($count1 < $count2) {

-			$count = $count1;

-		} else {

-			$count = $count2;

-		}

-

-		$result = 0;

-		for ($i = 0; $i < $count; ++$i) {

-			if (((is_numeric($array1[$i])) && (!is_string($array1[$i]))) &&

-				((is_numeric($array2[$i])) && (!is_string($array2[$i])))) {

-				$result += ($array1[$i] - $array2[$i]) * ($array1[$i] - $array2[$i]);

-			}

-		}

-

-		return $result;

-	}	//	function SUMXMY2()

-

-

-	/**

-	 * TRUNC

-	 *

-	 * Truncates value to the number of fractional digits by number_digits.

-	 *

-	 * @param	float		$value

-	 * @param	int			$digits

-	 * @return	float		Truncated value

-	 */

-	public static function TRUNC($value = 0, $digits = 0) {

-		$value	= PHPExcel_Calculation_Functions::flattenSingleValue($value);

-		$digits	= PHPExcel_Calculation_Functions::flattenSingleValue($digits);

-

-		// Validate parameters

-		if ((!is_numeric($value)) || (!is_numeric($digits)))

-			return PHPExcel_Calculation_Functions::VALUE();

-		$digits	= floor($digits);

-

-		// Truncate

-		$adjust = pow(10, $digits);

-

-		if (($digits > 0) && (rtrim(intval((abs($value) - abs(intval($value))) * $adjust),'0') < $adjust/10))

-			return $value;

-

-		return (intval($value * $adjust)) / $adjust;

-	}	//	function TRUNC()

-

-}	//	class PHPExcel_Calculation_MathTrig

diff --git a/admin/survey/excel/PHPExcel/Calculation/Statistical.php b/admin/survey/excel/PHPExcel/Calculation/Statistical.php
deleted file mode 100644
index b2a4f43..0000000
--- a/admin/survey/excel/PHPExcel/Calculation/Statistical.php
+++ /dev/null
@@ -1,3644 +0,0 @@
-<?php

-/**

- * PHPExcel

- *

- * Copyright (c) 2006 - 2012 PHPExcel

- *

- * This library is free software; you can redistribute it and/or

- * modify it under the terms of the GNU Lesser General Public

- * License as published by the Free Software Foundation; either

- * version 2.1 of the License, or (at your option) any later version.

- *

- * This library is distributed in the hope that it will be useful,

- * but WITHOUT ANY WARRANTY; without even the implied warranty of

- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU

- * Lesser General Public License for more details.

- *

- * You should have received a copy of the GNU Lesser General Public

- * License along with this library; if not, write to the Free Software

- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA

- *

- * @category	PHPExcel

- * @package		PHPExcel_Calculation

- * @copyright	Copyright (c) 2006 - 2012 PHPExcel (http://www.codeplex.com/PHPExcel)

- * @license		http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL

- * @version		1.7.8, 2012-10-12

- */

-

-

-/** PHPExcel root directory */

-if (!defined('PHPEXCEL_ROOT')) {

-	/**

-	 * @ignore

-	 */

-	define('PHPEXCEL_ROOT', dirname(__FILE__) . '/../../');

-	require(PHPEXCEL_ROOT . 'PHPExcel/Autoloader.php');

-}

-

-

-require_once PHPEXCEL_ROOT . 'PHPExcel/Shared/trend/trendClass.php';

-

-

-/** LOG_GAMMA_X_MAX_VALUE */

-define('LOG_GAMMA_X_MAX_VALUE', 2.55e305);

-

-/** XMININ */

-define('XMININ', 2.23e-308);

-

-/** EPS */

-define('EPS', 2.22e-16);

-

-/** SQRT2PI */

-define('SQRT2PI', 2.5066282746310005024157652848110452530069867406099);

-

-

-/**

- * PHPExcel_Calculation_Statistical

- *

- * @category	PHPExcel

- * @package		PHPExcel_Calculation

- * @copyright	Copyright (c) 2006 - 2012 PHPExcel (http://www.codeplex.com/PHPExcel)

- */

-class PHPExcel_Calculation_Statistical {

-

-

-	private static function _checkTrendArrays(&$array1,&$array2) {

-		if (!is_array($array1)) { $array1 = array($array1); }

-		if (!is_array($array2)) { $array2 = array($array2); }

-

-		$array1 = PHPExcel_Calculation_Functions::flattenArray($array1);

-		$array2 = PHPExcel_Calculation_Functions::flattenArray($array2);

-		foreach($array1 as $key => $value) {

-			if ((is_bool($value)) || (is_string($value)) || (is_null($value))) {

-				unset($array1[$key]);

-				unset($array2[$key]);

-			}

-		}

-		foreach($array2 as $key => $value) {

-			if ((is_bool($value)) || (is_string($value)) || (is_null($value))) {

-				unset($array1[$key]);

-				unset($array2[$key]);

-			}

-		}

-		$array1 = array_merge($array1);

-		$array2 = array_merge($array2);

-

-		return True;

-	}	//	function _checkTrendArrays()

-

-

-	/**

-	 * Beta function.

-	 *

-	 * @author Jaco van Kooten

-	 *

-	 * @param p require p>0

-	 * @param q require q>0

-	 * @return 0 if p<=0, q<=0 or p+q>2.55E305 to avoid errors and over/underflow

-	 */

-	private static function _beta($p, $q) {

-		if ($p <= 0.0 || $q <= 0.0 || ($p + $q) > LOG_GAMMA_X_MAX_VALUE) {

-			return 0.0;

-		} else {

-			return exp(self::_logBeta($p, $q));

-		}

-	}	//	function _beta()

-

-

-	/**

-	 * Incomplete beta function

-	 *

-	 * @author Jaco van Kooten

-	 * @author Paul Meagher

-	 *

-	 * The computation is based on formulas from Numerical Recipes, Chapter 6.4 (W.H. Press et al, 1992).

-	 * @param x require 0<=x<=1

-	 * @param p require p>0

-	 * @param q require q>0

-	 * @return 0 if x<0, p<=0, q<=0 or p+q>2.55E305 and 1 if x>1 to avoid errors and over/underflow

-	 */

-	private static function _incompleteBeta($x, $p, $q) {

-		if ($x <= 0.0) {

-			return 0.0;

-		} elseif ($x >= 1.0) {

-			return 1.0;

-		} elseif (($p <= 0.0) || ($q <= 0.0) || (($p + $q) > LOG_GAMMA_X_MAX_VALUE)) {

-			return 0.0;

-		}

-		$beta_gam = exp((0 - self::_logBeta($p, $q)) + $p * log($x) + $q * log(1.0 - $x));

-		if ($x < ($p + 1.0) / ($p + $q + 2.0)) {

-			return $beta_gam * self::_betaFraction($x, $p, $q) / $p;

-		} else {

-			return 1.0 - ($beta_gam * self::_betaFraction(1 - $x, $q, $p) / $q);

-		}

-	}	//	function _incompleteBeta()

-

-

-	// Function cache for _logBeta function

-	private static $_logBetaCache_p			= 0.0;

-	private static $_logBetaCache_q			= 0.0;

-	private static $_logBetaCache_result	= 0.0;

-

-	/**

-	 * The natural logarithm of the beta function.

-	 *

-	 * @param p require p>0

-	 * @param q require q>0

-	 * @return 0 if p<=0, q<=0 or p+q>2.55E305 to avoid errors and over/underflow

-	 * @author Jaco van Kooten

-	 */

-	private static function _logBeta($p, $q) {

-		if ($p != self::$_logBetaCache_p || $q != self::$_logBetaCache_q) {

-			self::$_logBetaCache_p = $p;

-			self::$_logBetaCache_q = $q;

-			if (($p <= 0.0) || ($q <= 0.0) || (($p + $q) > LOG_GAMMA_X_MAX_VALUE)) {

-				self::$_logBetaCache_result = 0.0;

-			} else {

-				self::$_logBetaCache_result = self::_logGamma($p) + self::_logGamma($q) - self::_logGamma($p + $q);

-			}

-		}

-		return self::$_logBetaCache_result;

-	}	//	function _logBeta()

-

-

-	/**

-	 * Evaluates of continued fraction part of incomplete beta function.

-	 * Based on an idea from Numerical Recipes (W.H. Press et al, 1992).

-	 * @author Jaco van Kooten

-	 */

-	private static function _betaFraction($x, $p, $q) {

-		$c = 1.0;

-		$sum_pq = $p + $q;

-		$p_plus = $p + 1.0;

-		$p_minus = $p - 1.0;

-		$h = 1.0 - $sum_pq * $x / $p_plus;

-		if (abs($h) < XMININ) {

-			$h = XMININ;

-		}

-		$h = 1.0 / $h;

-		$frac = $h;

-		$m	 = 1;

-		$delta = 0.0;

-		while ($m <= MAX_ITERATIONS && abs($delta-1.0) > PRECISION ) {

-			$m2 = 2 * $m;

-			// even index for d

-			$d = $m * ($q - $m) * $x / ( ($p_minus + $m2) * ($p + $m2));

-			$h = 1.0 + $d * $h;

-			if (abs($h) < XMININ) {

-				$h = XMININ;

-			}

-			$h = 1.0 / $h;

-			$c = 1.0 + $d / $c;

-			if (abs($c) < XMININ) {

-				$c = XMININ;

-			}

-			$frac *= $h * $c;

-			// odd index for d

-			$d = -($p + $m) * ($sum_pq + $m) * $x / (($p + $m2) * ($p_plus + $m2));

-			$h = 1.0 + $d * $h;

-			if (abs($h) < XMININ) {

-				$h = XMININ;

-			}

-			$h = 1.0 / $h;

-			$c = 1.0 + $d / $c;

-			if (abs($c) < XMININ) {

-				$c = XMININ;

-			}

-			$delta = $h * $c;

-			$frac *= $delta;

-			++$m;

-		}

-		return $frac;

-	}	//	function _betaFraction()

-

-

-	/**

-	 * logGamma function

-	 *

-	 * @version 1.1

-	 * @author Jaco van Kooten

-	 *

-	 * Original author was Jaco van Kooten. Ported to PHP by Paul Meagher.

-	 *

-	 * The natural logarithm of the gamma function. <br />

-	 * Based on public domain NETLIB (Fortran) code by W. J. Cody and L. Stoltz <br />

-	 * Applied Mathematics Division <br />

-	 * Argonne National Laboratory <br />

-	 * Argonne, IL 60439 <br />

-	 * <p>

-	 * References:

-	 * <ol>

-	 * <li>W. J. Cody and K. E. Hillstrom, 'Chebyshev Approximations for the Natural

-	 *	 Logarithm of the Gamma Function,' Math. Comp. 21, 1967, pp. 198-203.</li>

-	 * <li>K. E. Hillstrom, ANL/AMD Program ANLC366S, DGAMMA/DLGAMA, May, 1969.</li>

-	 * <li>Hart, Et. Al., Computer Approximations, Wiley and sons, New York, 1968.</li>

-	 * </ol>

-	 * </p>

-	 * <p>

-	 * From the original documentation:

-	 * </p>

-	 * <p>

-	 * This routine calculates the LOG(GAMMA) function for a positive real argument X.

-	 * Computation is based on an algorithm outlined in references 1 and 2.

-	 * The program uses rational functions that theoretically approximate LOG(GAMMA)

-	 * to at least 18 significant decimal digits. The approximation for X > 12 is from

-	 * reference 3, while approximations for X < 12.0 are similar to those in reference

-	 * 1, but are unpublished. The accuracy achieved depends on the arithmetic system,

-	 * the compiler, the intrinsic functions, and proper selection of the

-	 * machine-dependent constants.

-	 * </p>

-	 * <p>

-	 * Error returns: <br />

-	 * The program returns the value XINF for X .LE. 0.0 or when overflow would occur.

-	 * The computation is believed to be free of underflow and overflow.

-	 * </p>

-	 * @return MAX_VALUE for x < 0.0 or when overflow would occur, i.e. x > 2.55E305

-	 */

-

-	// Function cache for logGamma

-	private static $_logGammaCache_result	= 0.0;

-	private static $_logGammaCache_x		= 0.0;

-

-	private static function _logGamma($x) {

-		// Log Gamma related constants

-		static $lg_d1 = -0.5772156649015328605195174;

-		static $lg_d2 = 0.4227843350984671393993777;

-		static $lg_d4 = 1.791759469228055000094023;

-

-		static $lg_p1 = array(	4.945235359296727046734888,

-								201.8112620856775083915565,

-								2290.838373831346393026739,

-								11319.67205903380828685045,

-								28557.24635671635335736389,

-								38484.96228443793359990269,

-								26377.48787624195437963534,

-								7225.813979700288197698961 );

-		static $lg_p2 = array(	4.974607845568932035012064,

-								542.4138599891070494101986,

-								15506.93864978364947665077,

-								184793.2904445632425417223,

-								1088204.76946882876749847,

-								3338152.967987029735917223,

-								5106661.678927352456275255,

-								3074109.054850539556250927 );

-		static $lg_p4 = array(	14745.02166059939948905062,

-								2426813.369486704502836312,

-								121475557.4045093227939592,

-								2663432449.630976949898078,

-								29403789566.34553899906876,

-								170266573776.5398868392998,

-								492612579337.743088758812,

-								560625185622.3951465078242 );

-

-		static $lg_q1 = array(	67.48212550303777196073036,

-								1113.332393857199323513008,

-								7738.757056935398733233834,

-								27639.87074403340708898585,

-								54993.10206226157329794414,

-								61611.22180066002127833352,

-								36351.27591501940507276287,

-								8785.536302431013170870835 );

-		static $lg_q2 = array(	183.0328399370592604055942,

-								7765.049321445005871323047,

-								133190.3827966074194402448,

-								1136705.821321969608938755,

-								5267964.117437946917577538,

-								13467014.54311101692290052,

-								17827365.30353274213975932,

-								9533095.591844353613395747 );

-		static $lg_q4 = array(	2690.530175870899333379843,

-								639388.5654300092398984238,

-								41355999.30241388052042842,

-								1120872109.61614794137657,

-								14886137286.78813811542398,

-								101680358627.2438228077304,

-								341747634550.7377132798597,

-								446315818741.9713286462081 );

-

-		static $lg_c  = array(	-0.001910444077728,

-								8.4171387781295e-4,

-								-5.952379913043012e-4,

-								7.93650793500350248e-4,

-								-0.002777777777777681622553,

-								0.08333333333333333331554247,

-								0.0057083835261 );

-

-	// Rough estimate of the fourth root of logGamma_xBig

-	static $lg_frtbig = 2.25e76;

-	static $pnt68	 = 0.6796875;

-

-

-	if ($x == self::$_logGammaCache_x) {

-		return self::$_logGammaCache_result;

-	}

-	$y = $x;

-	if ($y > 0.0 && $y <= LOG_GAMMA_X_MAX_VALUE) {

-		if ($y <= EPS) {

-			$res = -log(y);

-		} elseif ($y <= 1.5) {

-			// ---------------------

-			//	EPS .LT. X .LE. 1.5

-			// ---------------------

-			if ($y < $pnt68) {

-				$corr = -log($y);

-				$xm1 = $y;

-			} else {

-				$corr = 0.0;

-				$xm1 = $y - 1.0;

-			}

-			if ($y <= 0.5 || $y >= $pnt68) {

-				$xden = 1.0;

-				$xnum = 0.0;

-				for ($i = 0; $i < 8; ++$i) {

-					$xnum = $xnum * $xm1 + $lg_p1[$i];

-					$xden = $xden * $xm1 + $lg_q1[$i];

-				}

-				$res = $corr + $xm1 * ($lg_d1 + $xm1 * ($xnum / $xden));

-			} else {

-				$xm2 = $y - 1.0;

-				$xden = 1.0;

-				$xnum = 0.0;

-				for ($i = 0; $i < 8; ++$i) {

-					$xnum = $xnum * $xm2 + $lg_p2[$i];

-					$xden = $xden * $xm2 + $lg_q2[$i];

-				}

-				$res = $corr + $xm2 * ($lg_d2 + $xm2 * ($xnum / $xden));

-			}

-		} elseif ($y <= 4.0) {

-			// ---------------------

-			//	1.5 .LT. X .LE. 4.0

-			// ---------------------

-			$xm2 = $y - 2.0;

-			$xden = 1.0;

-			$xnum = 0.0;

-			for ($i = 0; $i < 8; ++$i) {

-				$xnum = $xnum * $xm2 + $lg_p2[$i];

-				$xden = $xden * $xm2 + $lg_q2[$i];

-			}

-			$res = $xm2 * ($lg_d2 + $xm2 * ($xnum / $xden));

-		} elseif ($y <= 12.0) {

-			// ----------------------

-			//	4.0 .LT. X .LE. 12.0

-			// ----------------------

-			$xm4 = $y - 4.0;

-			$xden = -1.0;

-			$xnum = 0.0;

-			for ($i = 0; $i < 8; ++$i) {

-				$xnum = $xnum * $xm4 + $lg_p4[$i];

-				$xden = $xden * $xm4 + $lg_q4[$i];

-			}

-			$res = $lg_d4 + $xm4 * ($xnum / $xden);

-		} else {

-			// ---------------------------------

-			//	Evaluate for argument .GE. 12.0

-			// ---------------------------------

-			$res = 0.0;

-			if ($y <= $lg_frtbig) {

-				$res = $lg_c[6];

-				$ysq = $y * $y;

-				for ($i = 0; $i < 6; ++$i)

-					$res = $res / $ysq + $lg_c[$i];

-				}

-				$res /= $y;

-				$corr = log($y);

-				$res = $res + log(SQRT2PI) - 0.5 * $corr;

-				$res += $y * ($corr - 1.0);

-			}

-		} else {

-			// --------------------------

-			//	Return for bad arguments

-			// --------------------------

-			$res = MAX_VALUE;

-		}

-		// ------------------------------

-		//	Final adjustments and return

-		// ------------------------------

-		self::$_logGammaCache_x = $x;

-		self::$_logGammaCache_result = $res;

-		return $res;

-	}	//	function _logGamma()

-

-

-	//

-	//	Private implementation of the incomplete Gamma function

-	//

-	private static function _incompleteGamma($a,$x) {

-		static $max = 32;

-		$summer = 0;

-		for ($n=0; $n<=$max; ++$n) {

-			$divisor = $a;

-			for ($i=1; $i<=$n; ++$i) {

-				$divisor *= ($a + $i);

-			}

-			$summer += (pow($x,$n) / $divisor);

-		}

-		return pow($x,$a) * exp(0-$x) * $summer;

-	}	//	function _incompleteGamma()

-

-

-	//

-	//	Private implementation of the Gamma function

-	//

-	private static function _gamma($data) {

-		if ($data == 0.0) return 0;

-

-		static $p0 = 1.000000000190015;

-		static $p = array ( 1 => 76.18009172947146,

-							2 => -86.50532032941677,

-							3 => 24.01409824083091,

-							4 => -1.231739572450155,

-							5 => 1.208650973866179e-3,

-							6 => -5.395239384953e-6

-						  );

-

-		$y = $x = $data;

-		$tmp = $x + 5.5;

-		$tmp -= ($x + 0.5) * log($tmp);

-

-		$summer = $p0;

-		for ($j=1;$j<=6;++$j) {

-			$summer += ($p[$j] / ++$y);

-		}

-		return exp(0 - $tmp + log(SQRT2PI * $summer / $x));

-	}	//	function _gamma()

-

-

-	/***************************************************************************

-	 *								inverse_ncdf.php

-	 *							-------------------

-	 *	begin				: Friday, January 16, 2004

-	 *	copyright			: (C) 2004 Michael Nickerson

-	 *	email				: nickersonm@yahoo.com

-	 *

-	 ***************************************************************************/

-	private static function _inverse_ncdf($p) {

-		//	Inverse ncdf approximation by Peter J. Acklam, implementation adapted to

-		//	PHP by Michael Nickerson, using Dr. Thomas Ziegler's C implementation as

-		//	a guide. http://home.online.no/~pjacklam/notes/invnorm/index.html

-		//	I have not checked the accuracy of this implementation. Be aware that PHP

-		//	will truncate the coeficcients to 14 digits.

-

-		//	You have permission to use and distribute this function freely for

-		//	whatever purpose you want, but please show common courtesy and give credit

-		//	where credit is due.

-

-		//	Input paramater is $p - probability - where 0 < p < 1.

-

-		//	Coefficients in rational approximations

-		static $a = array(	1 => -3.969683028665376e+01,

-							2 => 2.209460984245205e+02,

-							3 => -2.759285104469687e+02,

-							4 => 1.383577518672690e+02,

-							5 => -3.066479806614716e+01,

-							6 => 2.506628277459239e+00

-						 );

-

-		static $b = array(	1 => -5.447609879822406e+01,

-							2 => 1.615858368580409e+02,

-							3 => -1.556989798598866e+02,

-							4 => 6.680131188771972e+01,

-							5 => -1.328068155288572e+01

-						 );

-

-		static $c = array(	1 => -7.784894002430293e-03,

-							2 => -3.223964580411365e-01,

-							3 => -2.400758277161838e+00,

-							4 => -2.549732539343734e+00,

-							5 => 4.374664141464968e+00,

-							6 => 2.938163982698783e+00

-						 );

-

-		static $d = array(	1 => 7.784695709041462e-03,

-							2 => 3.224671290700398e-01,

-							3 => 2.445134137142996e+00,

-							4 => 3.754408661907416e+00

-						 );

-

-		//	Define lower and upper region break-points.

-		$p_low = 0.02425;			//Use lower region approx. below this

-		$p_high = 1 - $p_low;		//Use upper region approx. above this

-

-		if (0 < $p && $p < $p_low) {

-			//	Rational approximation for lower region.

-			$q = sqrt(-2 * log($p));

-			return ((((($c[1] * $q + $c[2]) * $q + $c[3]) * $q + $c[4]) * $q + $c[5]) * $q + $c[6]) /

-					(((($d[1] * $q + $d[2]) * $q + $d[3]) * $q + $d[4]) * $q + 1);

-		} elseif ($p_low <= $p && $p <= $p_high) {

-			//	Rational approximation for central region.

-			$q = $p - 0.5;

-			$r = $q * $q;

-			return ((((($a[1] * $r + $a[2]) * $r + $a[3]) * $r + $a[4]) * $r + $a[5]) * $r + $a[6]) * $q /

-				   ((((($b[1] * $r + $b[2]) * $r + $b[3]) * $r + $b[4]) * $r + $b[5]) * $r + 1);

-		} elseif ($p_high < $p && $p < 1) {

-			//	Rational approximation for upper region.

-			$q = sqrt(-2 * log(1 - $p));

-			return -((((($c[1] * $q + $c[2]) * $q + $c[3]) * $q + $c[4]) * $q + $c[5]) * $q + $c[6]) /

-					 (((($d[1] * $q + $d[2]) * $q + $d[3]) * $q + $d[4]) * $q + 1);

-		}

-		//	If 0 < p < 1, return a null value

-		return PHPExcel_Calculation_Functions::NULL();

-	}	//	function _inverse_ncdf()

-

-

-	private static function _inverse_ncdf2($prob) {

-		//	Approximation of inverse standard normal CDF developed by

-		//	B. Moro, "The Full Monte," Risk 8(2), Feb 1995, 57-58.

-

-		$a1 = 2.50662823884;

-		$a2 = -18.61500062529;

-		$a3 = 41.39119773534;

-		$a4 = -25.44106049637;

-

-		$b1 = -8.4735109309;

-		$b2 = 23.08336743743;

-		$b3 = -21.06224101826;

-		$b4 = 3.13082909833;

-

-		$c1 = 0.337475482272615;

-		$c2 = 0.976169019091719;

-		$c3 = 0.160797971491821;

-		$c4 = 2.76438810333863E-02;

-		$c5 = 3.8405729373609E-03;

-		$c6 = 3.951896511919E-04;

-		$c7 = 3.21767881768E-05;

-		$c8 = 2.888167364E-07;

-		$c9 = 3.960315187E-07;

-

-		$y = $prob - 0.5;

-		if (abs($y) < 0.42) {

-			$z = ($y * $y);

-			$z = $y * ((($a4 * $z + $a3) * $z + $a2) * $z + $a1) / (((($b4 * $z + $b3) * $z + $b2) * $z + $b1) * $z + 1);

-		} else {

-			if ($y > 0) {

-				$z = log(-log(1 - $prob));

-			} else {

-				$z = log(-log($prob));

-			}

-			$z = $c1 + $z * ($c2 + $z * ($c3 + $z * ($c4 + $z * ($c5 + $z * ($c6 + $z * ($c7 + $z * ($c8 + $z * $c9)))))));

-			if ($y < 0) {

-				$z = -$z;

-			}

-		}

-		return $z;

-	}	//	function _inverse_ncdf2()

-

-

-	private static function _inverse_ncdf3($p) {

-		//	ALGORITHM AS241 APPL. STATIST. (1988) VOL. 37, NO. 3.

-		//	Produces the normal deviate Z corresponding to a given lower

-		//	tail area of P; Z is accurate to about 1 part in 10**16.

-		//

-		//	This is a PHP version of the original FORTRAN code that can

-		//	be found at http://lib.stat.cmu.edu/apstat/

-		$split1 = 0.425;

-		$split2 = 5;

-		$const1 = 0.180625;

-		$const2 = 1.6;

-

-		//	coefficients for p close to 0.5

-		$a0 = 3.3871328727963666080;

-		$a1 = 1.3314166789178437745E+2;

-		$a2 = 1.9715909503065514427E+3;

-		$a3 = 1.3731693765509461125E+4;

-		$a4 = 4.5921953931549871457E+4;

-		$a5 = 6.7265770927008700853E+4;

-		$a6 = 3.3430575583588128105E+4;

-		$a7 = 2.5090809287301226727E+3;

-

-		$b1 = 4.2313330701600911252E+1;

-		$b2 = 6.8718700749205790830E+2;

-		$b3 = 5.3941960214247511077E+3;

-		$b4 = 2.1213794301586595867E+4;

-		$b5 = 3.9307895800092710610E+4;

-		$b6 = 2.8729085735721942674E+4;

-		$b7 = 5.2264952788528545610E+3;

-

-		//	coefficients for p not close to 0, 0.5 or 1.

-		$c0 = 1.42343711074968357734;

-		$c1 = 4.63033784615654529590;

-		$c2 = 5.76949722146069140550;

-		$c3 = 3.64784832476320460504;

-		$c4 = 1.27045825245236838258;

-		$c5 = 2.41780725177450611770E-1;

-		$c6 = 2.27238449892691845833E-2;

-		$c7 = 7.74545014278341407640E-4;

-

-		$d1 = 2.05319162663775882187;

-		$d2 = 1.67638483018380384940;

-		$d3 = 6.89767334985100004550E-1;

-		$d4 = 1.48103976427480074590E-1;

-		$d5 = 1.51986665636164571966E-2;

-		$d6 = 5.47593808499534494600E-4;

-		$d7 = 1.05075007164441684324E-9;

-

-		//	coefficients for p near 0 or 1.

-		$e0 = 6.65790464350110377720;

-		$e1 = 5.46378491116411436990;

-		$e2 = 1.78482653991729133580;

-		$e3 = 2.96560571828504891230E-1;

-		$e4 = 2.65321895265761230930E-2;

-		$e5 = 1.24266094738807843860E-3;

-		$e6 = 2.71155556874348757815E-5;

-		$e7 = 2.01033439929228813265E-7;

-

-		$f1 = 5.99832206555887937690E-1;

-		$f2 = 1.36929880922735805310E-1;

-		$f3 = 1.48753612908506148525E-2;

-		$f4 = 7.86869131145613259100E-4;

-		$f5 = 1.84631831751005468180E-5;

-		$f6 = 1.42151175831644588870E-7;

-		$f7 = 2.04426310338993978564E-15;

-

-		$q = $p - 0.5;

-

-		//	computation for p close to 0.5

-		if (abs($q) <= split1) {

-			$R = $const1 - $q * $q;

-			$z = $q * ((((((($a7 * $R + $a6) * $R + $a5) * $R + $a4) * $R + $a3) * $R + $a2) * $R + $a1) * $R + $a0) /

-					  ((((((($b7 * $R + $b6) * $R + $b5) * $R + $b4) * $R + $b3) * $R + $b2) * $R + $b1) * $R + 1);

-		} else {

-			if ($q < 0) {

-				$R = $p;

-			} else {

-				$R = 1 - $p;

-			}

-			$R = pow(-log($R),2);

-

-			//	computation for p not close to 0, 0.5 or 1.

-			If ($R <= $split2) {

-				$R = $R - $const2;

-				$z = ((((((($c7 * $R + $c6) * $R + $c5) * $R + $c4) * $R + $c3) * $R + $c2) * $R + $c1) * $R + $c0) /

-					 ((((((($d7 * $R + $d6) * $R + $d5) * $R + $d4) * $R + $d3) * $R + $d2) * $R + $d1) * $R + 1);

-			} else {

-			//	computation for p near 0 or 1.

-				$R = $R - $split2;

-				$z = ((((((($e7 * $R + $e6) * $R + $e5) * $R + $e4) * $R + $e3) * $R + $e2) * $R + $e1) * $R + $e0) /

-					 ((((((($f7 * $R + $f6) * $R + $f5) * $R + $f4) * $R + $f3) * $R + $f2) * $R + $f1) * $R + 1);

-			}

-			if ($q < 0) {

-				$z = -$z;

-			}

-		}

-		return $z;

-	}	//	function _inverse_ncdf3()

-

-

-	/**

-	 * AVEDEV

-	 *

-	 * Returns the average of the absolute deviations of data points from their mean.

-	 * AVEDEV is a measure of the variability in a data set.

-	 *

-	 * Excel Function:

-	 *		AVEDEV(value1[,value2[, ...]])

-	 *

-	 * @access	public

-	 * @category Statistical Functions

-	 * @param	mixed		$arg,...		Data values

-	 * @return	float

-	 */

-	public static function AVEDEV() {

-		$aArgs = PHPExcel_Calculation_Functions::flattenArrayIndexed(func_get_args());

-

-		// Return value

-		$returnValue = null;

-

-		$aMean = self::AVERAGE($aArgs);

-		if ($aMean != PHPExcel_Calculation_Functions::DIV0()) {

-			$aCount = 0;

-			foreach ($aArgs as $k => $arg) {

-				if ((is_bool($arg)) &&

-					((!PHPExcel_Calculation_Functions::isCellValue($k)) || (PHPExcel_Calculation_Functions::getCompatibilityMode() == PHPExcel_Calculation_Functions::COMPATIBILITY_OPENOFFICE))) {

-					$arg = (integer) $arg;

-				}

-				// Is it a numeric value?

-				if ((is_numeric($arg)) && (!is_string($arg))) {

-					if (is_null($returnValue)) {

-						$returnValue = abs($arg - $aMean);

-					} else {

-						$returnValue += abs($arg - $aMean);

-					}

-					++$aCount;

-				}

-			}

-

-			// Return

-			if ($aCount == 0) {

-				return PHPExcel_Calculation_Functions::DIV0();

-			}

-			return $returnValue / $aCount;

-		}

-		return PHPExcel_Calculation_Functions::NaN();

-	}	//	function AVEDEV()

-

-

-	/**

-	 * AVERAGE

-	 *

-	 * Returns the average (arithmetic mean) of the arguments

-	 *

-	 * Excel Function:

-	 *		AVERAGE(value1[,value2[, ...]])

-	 *

-	 * @access	public

-	 * @category Statistical Functions

-	 * @param	mixed		$arg,...		Data values

-	 * @return	float

-	 */

-	public static function AVERAGE() {

-		$returnValue = $aCount = 0;

-

-		// Loop through arguments

-		foreach (PHPExcel_Calculation_Functions::flattenArrayIndexed(func_get_args()) as $k => $arg) {

-			if ((is_bool($arg)) &&

-				((!PHPExcel_Calculation_Functions::isCellValue($k)) || (PHPExcel_Calculation_Functions::getCompatibilityMode() == PHPExcel_Calculation_Functions::COMPATIBILITY_OPENOFFICE))) {

-				$arg = (integer) $arg;

-			}

-			// Is it a numeric value?

-			if ((is_numeric($arg)) && (!is_string($arg))) {

-				if (is_null($returnValue)) {

-					$returnValue = $arg;

-				} else {

-					$returnValue += $arg;

-				}

-				++$aCount;

-			}

-		}

-

-		// Return

-		if ($aCount > 0) {

-			return $returnValue / $aCount;

-		} else {

-			return PHPExcel_Calculation_Functions::DIV0();

-		}

-	}	//	function AVERAGE()

-

-

-	/**

-	 * AVERAGEA

-	 *

-	 * Returns the average of its arguments, including numbers, text, and logical values

-	 *

-	 * Excel Function:

-	 *		AVERAGEA(value1[,value2[, ...]])

-	 *

-	 * @access	public

-	 * @category Statistical Functions

-	 * @param	mixed		$arg,...		Data values

-	 * @return	float

-	 */

-	public static function AVERAGEA() {

-		// Return value

-		$returnValue = null;

-

-		$aCount = 0;

-		// Loop through arguments

-		foreach (PHPExcel_Calculation_Functions::flattenArrayIndexed(func_get_args()) as $k => $arg) {

-			if ((is_bool($arg)) &&

-				(!PHPExcel_Calculation_Functions::isMatrixValue($k))) {

-			} else {

-				if ((is_numeric($arg)) || (is_bool($arg)) || ((is_string($arg) && ($arg != '')))) {

-					if (is_bool($arg)) {

-						$arg = (integer) $arg;

-					} elseif (is_string($arg)) {

-						$arg = 0;

-					}

-					if (is_null($returnValue)) {

-						$returnValue = $arg;

-					} else {

-						$returnValue += $arg;

-					}

-					++$aCount;

-				}

-			}

-		}

-

-		// Return

-		if ($aCount > 0) {

-			return $returnValue / $aCount;

-		} else {

-			return PHPExcel_Calculation_Functions::DIV0();

-		}

-	}	//	function AVERAGEA()

-

-

-	/**

-	 * AVERAGEIF

-	 *

-	 * Returns the average value from a range of cells that contain numbers within the list of arguments

-	 *

-	 * Excel Function:

-	 *		AVERAGEIF(value1[,value2[, ...]],condition)

-	 *

-	 * @access	public

-	 * @category Mathematical and Trigonometric Functions

-	 * @param	mixed		$arg,...		Data values

-	 * @param	string		$condition		The criteria that defines which cells will be checked.

-	 * @return	float

-	 */

-	public static function AVERAGEIF($aArgs,$condition,$averageArgs = array()) {

-		// Return value

-		$returnValue = 0;

-

-		$aArgs = PHPExcel_Calculation_Functions::flattenArray($aArgs);

-		$averageArgs = PHPExcel_Calculation_Functions::flattenArray($averageArgs);

-		if (empty($averageArgs)) {

-			$averageArgs = $aArgs;

-		}

-		$condition = PHPExcel_Calculation_Functions::_ifCondition($condition);

-		// Loop through arguments

-		$aCount = 0;

-		foreach ($aArgs as $key => $arg) {

-			if (!is_numeric($arg)) { $arg = PHPExcel_Calculation::_wrapResult(strtoupper($arg)); }

-			$testCondition = '='.$arg.$condition;

-			if (PHPExcel_Calculation::getInstance()->_calculateFormulaValue($testCondition)) {

-				if ((is_null($returnValue)) || ($arg > $returnValue)) {

-					$returnValue += $arg;

-					++$aCount;

-				}

-			}

-		}

-

-		// Return

-		if ($aCount > 0) {

-			return $returnValue / $aCount;

-		} else {

-			return PHPExcel_Calculation_Functions::DIV0();

-		}

-	}	//	function AVERAGEIF()

-

-

-	/**

-	 * BETADIST

-	 *

-	 * Returns the beta distribution.

-	 *

-	 * @param	float		$value			Value at which you want to evaluate the distribution

-	 * @param	float		$alpha			Parameter to the distribution

-	 * @param	float		$beta			Parameter to the distribution

-	 * @param	boolean		$cumulative

-	 * @return	float

-	 *

-	 */

-	public static function BETADIST($value,$alpha,$beta,$rMin=0,$rMax=1) {

-		$value	= PHPExcel_Calculation_Functions::flattenSingleValue($value);

-		$alpha	= PHPExcel_Calculation_Functions::flattenSingleValue($alpha);

-		$beta	= PHPExcel_Calculation_Functions::flattenSingleValue($beta);

-		$rMin	= PHPExcel_Calculation_Functions::flattenSingleValue($rMin);

-		$rMax	= PHPExcel_Calculation_Functions::flattenSingleValue($rMax);

-

-		if ((is_numeric($value)) && (is_numeric($alpha)) && (is_numeric($beta)) && (is_numeric($rMin)) && (is_numeric($rMax))) {

-			if (($value < $rMin) || ($value > $rMax) || ($alpha <= 0) || ($beta <= 0) || ($rMin == $rMax)) {

-				return PHPExcel_Calculation_Functions::NaN();

-			}

-			if ($rMin > $rMax) {

-				$tmp = $rMin;

-				$rMin = $rMax;

-				$rMax = $tmp;

-			}

-			$value -= $rMin;

-			$value /= ($rMax - $rMin);

-			return self::_incompleteBeta($value,$alpha,$beta);

-		}

-		return PHPExcel_Calculation_Functions::VALUE();

-	}	//	function BETADIST()

-

-

-	/**

-	 * BETAINV

-	 *

-	 * Returns the inverse of the beta distribution.

-	 *

-	 * @param	float		$probability	Probability at which you want to evaluate the distribution

-	 * @param	float		$alpha			Parameter to the distribution

-	 * @param	float		$beta			Parameter to the distribution

-	 * @param	boolean		$cumulative

-	 * @return	float

-	 *

-	 */

-	public static function BETAINV($probability,$alpha,$beta,$rMin=0,$rMax=1) {

-		$probability	= PHPExcel_Calculation_Functions::flattenSingleValue($probability);

-		$alpha			= PHPExcel_Calculation_Functions::flattenSingleValue($alpha);

-		$beta			= PHPExcel_Calculation_Functions::flattenSingleValue($beta);

-		$rMin			= PHPExcel_Calculation_Functions::flattenSingleValue($rMin);

-		$rMax			= PHPExcel_Calculation_Functions::flattenSingleValue($rMax);

-

-		if ((is_numeric($probability)) && (is_numeric($alpha)) && (is_numeric($beta)) && (is_numeric($rMin)) && (is_numeric($rMax))) {

-			if (($alpha <= 0) || ($beta <= 0) || ($rMin == $rMax) || ($probability <= 0) || ($probability > 1)) {

-				return PHPExcel_Calculation_Functions::NaN();

-			}

-			if ($rMin > $rMax) {

-				$tmp = $rMin;

-				$rMin = $rMax;

-				$rMax = $tmp;

-			}

-			$a = 0;

-			$b = 2;

-

-			$i = 0;

-			while ((($b - $a) > PRECISION) && ($i++ < MAX_ITERATIONS)) {

-				$guess = ($a + $b) / 2;

-				$result = self::BETADIST($guess, $alpha, $beta);

-				if (($result == $probability) || ($result == 0)) {

-					$b = $a;

-				} elseif ($result > $probability) {

-					$b = $guess;

-				} else {

-					$a = $guess;

-				}

-			}

-			if ($i == MAX_ITERATIONS) {

-				return PHPExcel_Calculation_Functions::NA();

-			}

-			return round($rMin + $guess * ($rMax - $rMin),12);

-		}

-		return PHPExcel_Calculation_Functions::VALUE();

-	}	//	function BETAINV()

-

-

-	/**

-	 * BINOMDIST

-	 *

-	 * Returns the individual term binomial distribution probability. Use BINOMDIST in problems with

-	 *		a fixed number of tests or trials, when the outcomes of any trial are only success or failure,

-	 *		when trials are independent, and when the probability of success is constant throughout the

-	 *		experiment. For example, BINOMDIST can calculate the probability that two of the next three

-	 *		babies born are male.

-	 *

-	 * @param	float		$value			Number of successes in trials

-	 * @param	float		$trials			Number of trials

-	 * @param	float		$probability	Probability of success on each trial

-	 * @param	boolean		$cumulative

-	 * @return	float

-	 *

-	 * @todo	Cumulative distribution function

-	 *

-	 */

-	public static function BINOMDIST($value, $trials, $probability, $cumulative) {

-		$value			= floor(PHPExcel_Calculation_Functions::flattenSingleValue($value));

-		$trials			= floor(PHPExcel_Calculation_Functions::flattenSingleValue($trials));

-		$probability	= PHPExcel_Calculation_Functions::flattenSingleValue($probability);

-

-		if ((is_numeric($value)) && (is_numeric($trials)) && (is_numeric($probability))) {

-			if (($value < 0) || ($value > $trials)) {

-				return PHPExcel_Calculation_Functions::NaN();

-			}

-			if (($probability < 0) || ($probability > 1)) {

-				return PHPExcel_Calculation_Functions::NaN();

-			}

-			if ((is_numeric($cumulative)) || (is_bool($cumulative))) {

-				if ($cumulative) {

-					$summer = 0;

-					for ($i = 0; $i <= $value; ++$i) {

-						$summer += PHPExcel_Calculation_MathTrig::COMBIN($trials,$i) * pow($probability,$i) * pow(1 - $probability,$trials - $i);

-					}

-					return $summer;

-				} else {

-					return PHPExcel_Calculation_MathTrig::COMBIN($trials,$value) * pow($probability,$value) * pow(1 - $probability,$trials - $value) ;

-				}

-			}

-		}

-		return PHPExcel_Calculation_Functions::VALUE();

-	}	//	function BINOMDIST()

-

-

-	/**

-	 * CHIDIST

-	 *

-	 * Returns the one-tailed probability of the chi-squared distribution.

-	 *

-	 * @param	float		$value			Value for the function

-	 * @param	float		$degrees		degrees of freedom

-	 * @return	float

-	 */

-	public static function CHIDIST($value, $degrees) {

-		$value		= PHPExcel_Calculation_Functions::flattenSingleValue($value);

-		$degrees	= floor(PHPExcel_Calculation_Functions::flattenSingleValue($degrees));

-

-		if ((is_numeric($value)) && (is_numeric($degrees))) {

-			if ($degrees < 1) {

-				return PHPExcel_Calculation_Functions::NaN();

-			}

-			if ($value < 0) {

-				if (PHPExcel_Calculation_Functions::getCompatibilityMode() == PHPExcel_Calculation_Functions::COMPATIBILITY_GNUMERIC) {

-					return 1;

-				}

-				return PHPExcel_Calculation_Functions::NaN();

-			}

-			return 1 - (self::_incompleteGamma($degrees/2,$value/2) / self::_gamma($degrees/2));

-		}

-		return PHPExcel_Calculation_Functions::VALUE();

-	}	//	function CHIDIST()

-

-

-	/**

-	 * CHIINV

-	 *

-	 * Returns the one-tailed probability of the chi-squared distribution.

-	 *

-	 * @param	float		$probability	Probability for the function

-	 * @param	float		$degrees		degrees of freedom

-	 * @return	float

-	 */

-	public static function CHIINV($probability, $degrees) {

-		$probability	= PHPExcel_Calculation_Functions::flattenSingleValue($probability);

-		$degrees		= floor(PHPExcel_Calculation_Functions::flattenSingleValue($degrees));

-

-		if ((is_numeric($probability)) && (is_numeric($degrees))) {

-

-			$xLo = 100;

-			$xHi = 0;

-

-			$x = $xNew = 1;

-			$dx	= 1;

-			$i = 0;

-

-			while ((abs($dx) > PRECISION) && ($i++ < MAX_ITERATIONS)) {

-				// Apply Newton-Raphson step

-				$result = self::CHIDIST($x, $degrees);

-				$error = $result - $probability;

-				if ($error == 0.0) {

-					$dx = 0;

-				} elseif ($error < 0.0) {

-					$xLo = $x;

-				} else {

-					$xHi = $x;

-				}

-				// Avoid division by zero

-				if ($result != 0.0) {

-					$dx = $error / $result;

-					$xNew = $x - $dx;

-				}

-				// If the NR fails to converge (which for example may be the

-				// case if the initial guess is too rough) we apply a bisection

-				// step to determine a more narrow interval around the root.

-				if (($xNew < $xLo) || ($xNew > $xHi) || ($result == 0.0)) {

-					$xNew = ($xLo + $xHi) / 2;

-					$dx = $xNew - $x;

-				}

-				$x = $xNew;

-			}

-			if ($i == MAX_ITERATIONS) {

-				return PHPExcel_Calculation_Functions::NA();

-			}

-			return round($x,12);

-		}

-		return PHPExcel_Calculation_Functions::VALUE();

-	}	//	function CHIINV()

-

-

-	/**

-	 * CONFIDENCE

-	 *

-	 * Returns the confidence interval for a population mean

-	 *

-	 * @param	float		$alpha

-	 * @param	float		$stdDev		Standard Deviation

-	 * @param	float		$size

-	 * @return	float

-	 *

-	 */

-	public static function CONFIDENCE($alpha,$stdDev,$size) {

-		$alpha	= PHPExcel_Calculation_Functions::flattenSingleValue($alpha);

-		$stdDev	= PHPExcel_Calculation_Functions::flattenSingleValue($stdDev);

-		$size	= floor(PHPExcel_Calculation_Functions::flattenSingleValue($size));

-

-		if ((is_numeric($alpha)) && (is_numeric($stdDev)) && (is_numeric($size))) {

-			if (($alpha <= 0) || ($alpha >= 1)) {

-				return PHPExcel_Calculation_Functions::NaN();

-			}

-			if (($stdDev <= 0) || ($size < 1)) {

-				return PHPExcel_Calculation_Functions::NaN();

-			}

-			return self::NORMSINV(1 - $alpha / 2) * $stdDev / sqrt($size);

-		}

-		return PHPExcel_Calculation_Functions::VALUE();

-	}	//	function CONFIDENCE()

-

-

-	/**

-	 * CORREL

-	 *

-	 * Returns covariance, the average of the products of deviations for each data point pair.

-	 *

-	 * @param	array of mixed		Data Series Y

-	 * @param	array of mixed		Data Series X

-	 * @return	float

-	 */

-	public static function CORREL($yValues,$xValues=null) {

-		if ((is_null($xValues)) || (!is_array($yValues)) || (!is_array($xValues))) {

-			return PHPExcel_Calculation_Functions::VALUE();

-		}

-		if (!self::_checkTrendArrays($yValues,$xValues)) {

-			return PHPExcel_Calculation_Functions::VALUE();

-		}

-		$yValueCount = count($yValues);

-		$xValueCount = count($xValues);

-

-		if (($yValueCount == 0) || ($yValueCount != $xValueCount)) {

-			return PHPExcel_Calculation_Functions::NA();

-		} elseif ($yValueCount == 1) {

-			return PHPExcel_Calculation_Functions::DIV0();

-		}

-

-		$bestFitLinear = trendClass::calculate(trendClass::TREND_LINEAR,$yValues,$xValues);

-		return $bestFitLinear->getCorrelation();

-	}	//	function CORREL()

-

-

-	/**

-	 * COUNT

-	 *

-	 * Counts the number of cells that contain numbers within the list of arguments

-	 *

-	 * Excel Function:

-	 *		COUNT(value1[,value2[, ...]])

-	 *

-	 * @access	public

-	 * @category Statistical Functions

-	 * @param	mixed		$arg,...		Data values

-	 * @return	int

-	 */

-	public static function COUNT() {

-		// Return value

-		$returnValue = 0;

-

-		// Loop through arguments

-		$aArgs = PHPExcel_Calculation_Functions::flattenArrayIndexed(func_get_args());

-		foreach ($aArgs as $k => $arg) {

-			if ((is_bool($arg)) &&

-				((!PHPExcel_Calculation_Functions::isCellValue($k)) || (PHPExcel_Calculation_Functions::getCompatibilityMode() == PHPExcel_Calculation_Functions::COMPATIBILITY_OPENOFFICE))) {

-				$arg = (integer) $arg;

-			}

-			// Is it a numeric value?

-			if ((is_numeric($arg)) && (!is_string($arg))) {

-				++$returnValue;

-			}

-		}

-

-		// Return

-		return $returnValue;

-	}	//	function COUNT()

-

-

-	/**

-	 * COUNTA

-	 *

-	 * Counts the number of cells that are not empty within the list of arguments

-	 *

-	 * Excel Function:

-	 *		COUNTA(value1[,value2[, ...]])

-	 *

-	 * @access	public

-	 * @category Statistical Functions

-	 * @param	mixed		$arg,...		Data values

-	 * @return	int

-	 */

-	public static function COUNTA() {

-		// Return value

-		$returnValue = 0;

-

-		// Loop through arguments

-		$aArgs = PHPExcel_Calculation_Functions::flattenArray(func_get_args());

-		foreach ($aArgs as $arg) {

-			// Is it a numeric, boolean or string value?

-			if ((is_numeric($arg)) || (is_bool($arg)) || ((is_string($arg) && ($arg != '')))) {

-				++$returnValue;

-			}

-		}

-

-		// Return

-		return $returnValue;

-	}	//	function COUNTA()

-

-

-	/**

-	 * COUNTBLANK

-	 *

-	 * Counts the number of empty cells within the list of arguments

-	 *

-	 * Excel Function:

-	 *		COUNTBLANK(value1[,value2[, ...]])

-	 *

-	 * @access	public

-	 * @category Statistical Functions

-	 * @param	mixed		$arg,...		Data values

-	 * @return	int

-	 */

-	public static function COUNTBLANK() {

-		// Return value

-		$returnValue = 0;

-

-		// Loop through arguments

-		$aArgs = PHPExcel_Calculation_Functions::flattenArray(func_get_args());

-		foreach ($aArgs as $arg) {

-			// Is it a blank cell?

-			if ((is_null($arg)) || ((is_string($arg)) && ($arg == ''))) {

-				++$returnValue;

-			}

-		}

-

-		// Return

-		return $returnValue;

-	}	//	function COUNTBLANK()

-

-

-	/**

-	 * COUNTIF

-	 *

-	 * Counts the number of cells that contain numbers within the list of arguments

-	 *

-	 * Excel Function:

-	 *		COUNTIF(value1[,value2[, ...]],condition)

-	 *

-	 * @access	public

-	 * @category Statistical Functions

-	 * @param	mixed		$arg,...		Data values

-	 * @param	string		$condition		The criteria that defines which cells will be counted.

-	 * @return	int

-	 */

-	public static function COUNTIF($aArgs,$condition) {

-		// Return value

-		$returnValue = 0;

-

-		$aArgs = PHPExcel_Calculation_Functions::flattenArray($aArgs);

-		$condition = PHPExcel_Calculation_Functions::_ifCondition($condition);

-		// Loop through arguments

-		foreach ($aArgs as $arg) {

-			if (!is_numeric($arg)) { $arg = PHPExcel_Calculation::_wrapResult(strtoupper($arg)); }

-			$testCondition = '='.$arg.$condition;

-			if (PHPExcel_Calculation::getInstance()->_calculateFormulaValue($testCondition)) {

-				// Is it a value within our criteria

-				++$returnValue;

-			}

-		}

-

-		// Return

-		return $returnValue;

-	}	//	function COUNTIF()

-

-

-	/**

-	 * COVAR

-	 *

-	 * Returns covariance, the average of the products of deviations for each data point pair.

-	 *

-	 * @param	array of mixed		Data Series Y

-	 * @param	array of mixed		Data Series X

-	 * @return	float

-	 */

-	public static function COVAR($yValues,$xValues) {

-		if (!self::_checkTrendArrays($yValues,$xValues)) {

-			return PHPExcel_Calculation_Functions::VALUE();

-		}

-		$yValueCount = count($yValues);

-		$xValueCount = count($xValues);

-

-		if (($yValueCount == 0) || ($yValueCount != $xValueCount)) {

-			return PHPExcel_Calculation_Functions::NA();

-		} elseif ($yValueCount == 1) {

-			return PHPExcel_Calculation_Functions::DIV0();

-		}

-

-		$bestFitLinear = trendClass::calculate(trendClass::TREND_LINEAR,$yValues,$xValues);

-		return $bestFitLinear->getCovariance();

-	}	//	function COVAR()

-

-

-	/**

-	 * CRITBINOM

-	 *

-	 * Returns the smallest value for which the cumulative binomial distribution is greater

-	 *		than or equal to a criterion value

-	 *

-	 * See http://support.microsoft.com/kb/828117/ for details of the algorithm used

-	 *

-	 * @param	float		$trials			number of Bernoulli trials

-	 * @param	float		$probability	probability of a success on each trial

-	 * @param	float		$alpha			criterion value

-	 * @return	int

-	 *

-	 * @todo	Warning. This implementation differs from the algorithm detailed on the MS

-	 *			web site in that $CumPGuessMinus1 = $CumPGuess - 1 rather than $CumPGuess - $PGuess

-	 *			This eliminates a potential endless loop error, but may have an adverse affect on the

-	 *			accuracy of the function (although all my tests have so far returned correct results).

-	 *

-	 */

-	public static function CRITBINOM($trials, $probability, $alpha) {

-		$trials			= floor(PHPExcel_Calculation_Functions::flattenSingleValue($trials));

-		$probability	= PHPExcel_Calculation_Functions::flattenSingleValue($probability);

-		$alpha			= PHPExcel_Calculation_Functions::flattenSingleValue($alpha);

-

-		if ((is_numeric($trials)) && (is_numeric($probability)) && (is_numeric($alpha))) {

-			if ($trials < 0) {

-				return PHPExcel_Calculation_Functions::NaN();

-			}

-			if (($probability < 0) || ($probability > 1)) {

-				return PHPExcel_Calculation_Functions::NaN();

-			}

-			if (($alpha < 0) || ($alpha > 1)) {

-				return PHPExcel_Calculation_Functions::NaN();

-			}

-			if ($alpha <= 0.5) {

-				$t = sqrt(log(1 / ($alpha * $alpha)));

-				$trialsApprox = 0 - ($t + (2.515517 + 0.802853 * $t + 0.010328 * $t * $t) / (1 + 1.432788 * $t + 0.189269 * $t * $t + 0.001308 * $t * $t * $t));

-			} else {

-				$t = sqrt(log(1 / pow(1 - $alpha,2)));

-				$trialsApprox = $t - (2.515517 + 0.802853 * $t + 0.010328 * $t * $t) / (1 + 1.432788 * $t + 0.189269 * $t * $t + 0.001308 * $t * $t * $t);

-			}

-			$Guess = floor($trials * $probability + $trialsApprox * sqrt($trials * $probability * (1 - $probability)));

-			if ($Guess < 0) {

-				$Guess = 0;

-			} elseif ($Guess > $trials) {

-				$Guess = $trials;

-			}

-

-			$TotalUnscaledProbability = $UnscaledPGuess = $UnscaledCumPGuess = 0.0;

-			$EssentiallyZero = 10e-12;

-

-			$m = floor($trials * $probability);

-			++$TotalUnscaledProbability;

-			if ($m == $Guess) { ++$UnscaledPGuess; }

-			if ($m <= $Guess) { ++$UnscaledCumPGuess; }

-

-			$PreviousValue = 1;

-			$Done = False;

-			$k = $m + 1;

-			while ((!$Done) && ($k <= $trials)) {

-				$CurrentValue = $PreviousValue * ($trials - $k + 1) * $probability / ($k * (1 - $probability));

-				$TotalUnscaledProbability += $CurrentValue;

-				if ($k == $Guess) { $UnscaledPGuess += $CurrentValue; }

-				if ($k <= $Guess) { $UnscaledCumPGuess += $CurrentValue; }

-				if ($CurrentValue <= $EssentiallyZero) { $Done = True; }

-				$PreviousValue = $CurrentValue;

-				++$k;

-			}

-

-			$PreviousValue = 1;

-			$Done = False;

-			$k = $m - 1;

-			while ((!$Done) && ($k >= 0)) {

-				$CurrentValue = $PreviousValue * $k + 1 * (1 - $probability) / (($trials - $k) * $probability);

-				$TotalUnscaledProbability += $CurrentValue;

-				if ($k == $Guess) { $UnscaledPGuess += $CurrentValue; }

-				if ($k <= $Guess) { $UnscaledCumPGuess += $CurrentValue; }

-				if ($CurrentValue <= $EssentiallyZero) { $Done = True; }

-				$PreviousValue = $CurrentValue;

-				--$k;

-			}

-

-			$PGuess = $UnscaledPGuess / $TotalUnscaledProbability;

-			$CumPGuess = $UnscaledCumPGuess / $TotalUnscaledProbability;

-

-//			$CumPGuessMinus1 = $CumPGuess - $PGuess;

-			$CumPGuessMinus1 = $CumPGuess - 1;

-

-			while (True) {

-				if (($CumPGuessMinus1 < $alpha) && ($CumPGuess >= $alpha)) {

-					return $Guess;

-				} elseif (($CumPGuessMinus1 < $alpha) && ($CumPGuess < $alpha)) {

-					$PGuessPlus1 = $PGuess * ($trials - $Guess) * $probability / $Guess / (1 - $probability);

-					$CumPGuessMinus1 = $CumPGuess;

-					$CumPGuess = $CumPGuess + $PGuessPlus1;

-					$PGuess = $PGuessPlus1;

-					++$Guess;

-				} elseif (($CumPGuessMinus1 >= $alpha) && ($CumPGuess >= $alpha)) {

-					$PGuessMinus1 = $PGuess * $Guess * (1 - $probability) / ($trials - $Guess + 1) / $probability;

-					$CumPGuess = $CumPGuessMinus1;

-					$CumPGuessMinus1 = $CumPGuessMinus1 - $PGuess;

-					$PGuess = $PGuessMinus1;

-					--$Guess;

-				}

-			}

-		}

-		return PHPExcel_Calculation_Functions::VALUE();

-	}	//	function CRITBINOM()

-

-

-	/**

-	 * DEVSQ

-	 *

-	 * Returns the sum of squares of deviations of data points from their sample mean.

-	 *

-	 * Excel Function:

-	 *		DEVSQ(value1[,value2[, ...]])

-	 *

-	 * @access	public

-	 * @category Statistical Functions

-	 * @param	mixed		$arg,...		Data values

-	 * @return	float

-	 */

-	public static function DEVSQ() {

-		$aArgs = PHPExcel_Calculation_Functions::flattenArrayIndexed(func_get_args());

-

-		// Return value

-		$returnValue = null;

-

-		$aMean = self::AVERAGE($aArgs);

-		if ($aMean != PHPExcel_Calculation_Functions::DIV0()) {

-			$aCount = -1;

-			foreach ($aArgs as $k => $arg) {

-				// Is it a numeric value?

-				if ((is_bool($arg)) &&

-					((!PHPExcel_Calculation_Functions::isCellValue($k)) || (PHPExcel_Calculation_Functions::getCompatibilityMode() == PHPExcel_Calculation_Functions::COMPATIBILITY_OPENOFFICE))) {

-					$arg = (integer) $arg;

-				}

-				if ((is_numeric($arg)) && (!is_string($arg))) {

-					if (is_null($returnValue)) {

-						$returnValue = pow(($arg - $aMean),2);

-					} else {

-						$returnValue += pow(($arg - $aMean),2);

-					}

-					++$aCount;

-				}

-			}

-

-			// Return

-			if (is_null($returnValue)) {

-				return PHPExcel_Calculation_Functions::NaN();

-			} else {

-				return $returnValue;

-			}

-		}

-		return self::NA();

-	}	//	function DEVSQ()

-

-

-	/**

-	 * EXPONDIST

-	 *

-	 *	Returns the exponential distribution. Use EXPONDIST to model the time between events,

-	 *		such as how long an automated bank teller takes to deliver cash. For example, you can

-	 *		use EXPONDIST to determine the probability that the process takes at most 1 minute.

-	 *

-	 * @param	float		$value			Value of the function

-	 * @param	float		$lambda			The parameter value

-	 * @param	boolean		$cumulative

-	 * @return	float

-	 */

-	public static function EXPONDIST($value, $lambda, $cumulative) {

-		$value	= PHPExcel_Calculation_Functions::flattenSingleValue($value);

-		$lambda	= PHPExcel_Calculation_Functions::flattenSingleValue($lambda);

-		$cumulative	= PHPExcel_Calculation_Functions::flattenSingleValue($cumulative);

-

-		if ((is_numeric($value)) && (is_numeric($lambda))) {

-			if (($value < 0) || ($lambda < 0)) {

-				return PHPExcel_Calculation_Functions::NaN();

-			}

-			if ((is_numeric($cumulative)) || (is_bool($cumulative))) {

-				if ($cumulative) {

-					return 1 - exp(0-$value*$lambda);

-				} else {

-					return $lambda * exp(0-$value*$lambda);

-				}

-			}

-		}

-		return PHPExcel_Calculation_Functions::VALUE();

-	}	//	function EXPONDIST()

-

-

-	/**

-	 * FISHER

-	 *

-	 * Returns the Fisher transformation at x. This transformation produces a function that

-	 *		is normally distributed rather than skewed. Use this function to perform hypothesis

-	 *		testing on the correlation coefficient.

-	 *

-	 * @param	float		$value

-	 * @return	float

-	 */

-	public static function FISHER($value) {

-		$value	= PHPExcel_Calculation_Functions::flattenSingleValue($value);

-

-		if (is_numeric($value)) {

-			if (($value <= -1) || ($value >= 1)) {

-				return PHPExcel_Calculation_Functions::NaN();

-			}

-			return 0.5 * log((1+$value)/(1-$value));

-		}

-		return PHPExcel_Calculation_Functions::VALUE();

-	}	//	function FISHER()

-

-

-	/**

-	 * FISHERINV

-	 *

-	 * Returns the inverse of the Fisher transformation. Use this transformation when

-	 *		analyzing correlations between ranges or arrays of data. If y = FISHER(x), then

-	 *		FISHERINV(y) = x.

-	 *

-	 * @param	float		$value

-	 * @return	float

-	 */

-	public static function FISHERINV($value) {

-		$value	= PHPExcel_Calculation_Functions::flattenSingleValue($value);

-

-		if (is_numeric($value)) {

-			return (exp(2 * $value) - 1) / (exp(2 * $value) + 1);

-		}

-		return PHPExcel_Calculation_Functions::VALUE();

-	}	//	function FISHERINV()

-

-

-	/**

-	 * FORECAST

-	 *

-	 * Calculates, or predicts, a future value by using existing values. The predicted value is a y-value for a given x-value.

-	 *

-	 * @param	float				Value of X for which we want to find Y

-	 * @param	array of mixed		Data Series Y

-	 * @param	array of mixed		Data Series X

-	 * @return	float

-	 */

-	public static function FORECAST($xValue,$yValues,$xValues) {

-		$xValue	= PHPExcel_Calculation_Functions::flattenSingleValue($xValue);

-		if (!is_numeric($xValue)) {

-			return PHPExcel_Calculation_Functions::VALUE();

-		}

-

-		if (!self::_checkTrendArrays($yValues,$xValues)) {

-			return PHPExcel_Calculation_Functions::VALUE();

-		}

-		$yValueCount = count($yValues);

-		$xValueCount = count($xValues);

-

-		if (($yValueCount == 0) || ($yValueCount != $xValueCount)) {

-			return PHPExcel_Calculation_Functions::NA();

-		} elseif ($yValueCount == 1) {

-			return PHPExcel_Calculation_Functions::DIV0();

-		}

-

-		$bestFitLinear = trendClass::calculate(trendClass::TREND_LINEAR,$yValues,$xValues);

-		return $bestFitLinear->getValueOfYForX($xValue);

-	}	//	function FORECAST()

-

-

-	/**

-	 * GAMMADIST

-	 *

-	 * Returns the gamma distribution.

-	 *

-	 * @param	float		$value			Value at which you want to evaluate the distribution

-	 * @param	float		$a				Parameter to the distribution

-	 * @param	float		$b				Parameter to the distribution

-	 * @param	boolean		$cumulative

-	 * @return	float

-	 *

-	 */

-	public static function GAMMADIST($value,$a,$b,$cumulative) {

-		$value	= PHPExcel_Calculation_Functions::flattenSingleValue($value);

-		$a		= PHPExcel_Calculation_Functions::flattenSingleValue($a);

-		$b		= PHPExcel_Calculation_Functions::flattenSingleValue($b);

-

-		if ((is_numeric($value)) && (is_numeric($a)) && (is_numeric($b))) {

-			if (($value < 0) || ($a <= 0) || ($b <= 0)) {

-				return PHPExcel_Calculation_Functions::NaN();

-			}

-			if ((is_numeric($cumulative)) || (is_bool($cumulative))) {

-				if ($cumulative) {

-					return self::_incompleteGamma($a,$value / $b) / self::_gamma($a);

-				} else {

-					return (1 / (pow($b,$a) * self::_gamma($a))) * pow($value,$a-1) * exp(0-($value / $b));

-				}

-			}

-		}

-		return PHPExcel_Calculation_Functions::VALUE();

-	}	//	function GAMMADIST()

-

-

-	/**

-	 * GAMMAINV

-	 *

-	 * Returns the inverse of the beta distribution.

-	 *

-	 * @param	float		$probability	Probability at which you want to evaluate the distribution

-	 * @param	float		$alpha			Parameter to the distribution

-	 * @param	float		$beta			Parameter to the distribution

-	 * @return	float

-	 *

-	 */

-	public static function GAMMAINV($probability,$alpha,$beta) {

-		$probability	= PHPExcel_Calculation_Functions::flattenSingleValue($probability);

-		$alpha			= PHPExcel_Calculation_Functions::flattenSingleValue($alpha);

-		$beta			= PHPExcel_Calculation_Functions::flattenSingleValue($beta);

-

-		if ((is_numeric($probability)) && (is_numeric($alpha)) && (is_numeric($beta))) {

-			if (($alpha <= 0) || ($beta <= 0) || ($probability < 0) || ($probability > 1)) {

-				return PHPExcel_Calculation_Functions::NaN();

-			}

-

-			$xLo = 0;

-			$xHi = $alpha * $beta * 5;

-

-			$x = $xNew = 1;

-			$error = $pdf = 0;

-			$dx	= 1024;

-			$i = 0;

-

-			while ((abs($dx) > PRECISION) && ($i++ < MAX_ITERATIONS)) {

-				// Apply Newton-Raphson step

-				$error = self::GAMMADIST($x, $alpha, $beta, True) - $probability;

-				if ($error < 0.0) {

-					$xLo = $x;

-				} else {

-					$xHi = $x;

-				}

-				$pdf = self::GAMMADIST($x, $alpha, $beta, False);

-				// Avoid division by zero

-				if ($pdf != 0.0) {

-					$dx = $error / $pdf;

-					$xNew = $x - $dx;

-				}

-				// If the NR fails to converge (which for example may be the

-				// case if the initial guess is too rough) we apply a bisection

-				// step to determine a more narrow interval around the root.

-				if (($xNew < $xLo) || ($xNew > $xHi) || ($pdf == 0.0)) {

-					$xNew = ($xLo + $xHi) / 2;

-					$dx = $xNew - $x;

-				}

-				$x = $xNew;

-			}

-			if ($i == MAX_ITERATIONS) {

-				return PHPExcel_Calculation_Functions::NA();

-			}

-			return $x;

-		}

-		return PHPExcel_Calculation_Functions::VALUE();

-	}	//	function GAMMAINV()

-

-

-	/**

-	 * GAMMALN

-	 *

-	 * Returns the natural logarithm of the gamma function.

-	 *

-	 * @param	float		$value

-	 * @return	float

-	 */

-	public static function GAMMALN($value) {

-		$value	= PHPExcel_Calculation_Functions::flattenSingleValue($value);

-

-		if (is_numeric($value)) {

-			if ($value <= 0) {

-				return PHPExcel_Calculation_Functions::NaN();

-			}

-			return log(self::_gamma($value));

-		}

-		return PHPExcel_Calculation_Functions::VALUE();

-	}	//	function GAMMALN()

-

-

-	/**

-	 * GEOMEAN

-	 *

-	 * Returns the geometric mean of an array or range of positive data. For example, you

-	 *		can use GEOMEAN to calculate average growth rate given compound interest with

-	 *		variable rates.

-	 *

-	 * Excel Function:

-	 *		GEOMEAN(value1[,value2[, ...]])

-	 *

-	 * @access	public

-	 * @category Statistical Functions

-	 * @param	mixed		$arg,...		Data values

-	 * @return	float

-	 */

-	public static function GEOMEAN() {

-		$aArgs = PHPExcel_Calculation_Functions::flattenArray(func_get_args());

-

-		$aMean = PHPExcel_Calculation_MathTrig::PRODUCT($aArgs);

-		if (is_numeric($aMean) && ($aMean > 0)) {

-			$aCount = self::COUNT($aArgs) ;

-			if (self::MIN($aArgs) > 0) {

-				return pow($aMean, (1 / $aCount));

-			}

-		}

-		return PHPExcel_Calculation_Functions::NaN();

-	}	//	GEOMEAN()

-

-

-	/**

-	 * GROWTH

-	 *

-	 * Returns values along a predicted emponential trend

-	 *

-	 * @param	array of mixed		Data Series Y

-	 * @param	array of mixed		Data Series X

-	 * @param	array of mixed		Values of X for which we want to find Y

-	 * @param	boolean				A logical value specifying whether to force the intersect to equal 0.

-	 * @return	array of float

-	 */

-	public static function GROWTH($yValues,$xValues=array(),$newValues=array(),$const=True) {

-		$yValues = PHPExcel_Calculation_Functions::flattenArray($yValues);

-		$xValues = PHPExcel_Calculation_Functions::flattenArray($xValues);

-		$newValues = PHPExcel_Calculation_Functions::flattenArray($newValues);

-		$const	= (is_null($const))	? True :	(boolean) PHPExcel_Calculation_Functions::flattenSingleValue($const);

-

-		$bestFitExponential = trendClass::calculate(trendClass::TREND_EXPONENTIAL,$yValues,$xValues,$const);

-		if (empty($newValues)) {

-			$newValues = $bestFitExponential->getXValues();

-		}

-

-		$returnArray = array();

-		foreach($newValues as $xValue) {

-			$returnArray[0][] = $bestFitExponential->getValueOfYForX($xValue);

-		}

-

-		return $returnArray;

-	}	//	function GROWTH()

-

-

-	/**

-	 * HARMEAN

-	 *

-	 * Returns the harmonic mean of a data set. The harmonic mean is the reciprocal of the

-	 *		arithmetic mean of reciprocals.

-	 *

-	 * Excel Function:

-	 *		HARMEAN(value1[,value2[, ...]])

-	 *

-	 * @access	public

-	 * @category Statistical Functions

-	 * @param	mixed		$arg,...		Data values

-	 * @return	float

-	 */

-	public static function HARMEAN() {

-		// Return value

-		$returnValue = PHPExcel_Calculation_Functions::NA();

-

-		// Loop through arguments

-		$aArgs = PHPExcel_Calculation_Functions::flattenArray(func_get_args());

-		if (self::MIN($aArgs) < 0) {

-			return PHPExcel_Calculation_Functions::NaN();

-		}

-		$aCount = 0;

-		foreach ($aArgs as $arg) {

-			// Is it a numeric value?

-			if ((is_numeric($arg)) && (!is_string($arg))) {

-				if ($arg <= 0) {

-					return PHPExcel_Calculation_Functions::NaN();

-				}

-				if (is_null($returnValue)) {

-					$returnValue = (1 / $arg);

-				} else {

-					$returnValue += (1 / $arg);

-				}

-				++$aCount;

-			}

-		}

-

-		// Return

-		if ($aCount > 0) {

-			return 1 / ($returnValue / $aCount);

-		} else {

-			return $returnValue;

-		}

-	}	//	function HARMEAN()

-

-

-	/**

-	 * HYPGEOMDIST

-	 *

-	 * Returns the hypergeometric distribution. HYPGEOMDIST returns the probability of a given number of

-	 * sample successes, given the sample size, population successes, and population size.

-	 *

-	 * @param	float		$sampleSuccesses		Number of successes in the sample

-	 * @param	float		$sampleNumber			Size of the sample

-	 * @param	float		$populationSuccesses	Number of successes in the population

-	 * @param	float		$populationNumber		Population size

-	 * @return	float

-	 *

-	 */

-	public static function HYPGEOMDIST($sampleSuccesses, $sampleNumber, $populationSuccesses, $populationNumber) {

-		$sampleSuccesses		= floor(PHPExcel_Calculation_Functions::flattenSingleValue($sampleSuccesses));

-		$sampleNumber			= floor(PHPExcel_Calculation_Functions::flattenSingleValue($sampleNumber));

-		$populationSuccesses	= floor(PHPExcel_Calculation_Functions::flattenSingleValue($populationSuccesses));

-		$populationNumber		= floor(PHPExcel_Calculation_Functions::flattenSingleValue($populationNumber));

-

-		if ((is_numeric($sampleSuccesses)) && (is_numeric($sampleNumber)) && (is_numeric($populationSuccesses)) && (is_numeric($populationNumber))) {

-			if (($sampleSuccesses < 0) || ($sampleSuccesses > $sampleNumber) || ($sampleSuccesses > $populationSuccesses)) {

-				return PHPExcel_Calculation_Functions::NaN();

-			}

-			if (($sampleNumber <= 0) || ($sampleNumber > $populationNumber)) {

-				return PHPExcel_Calculation_Functions::NaN();

-			}

-			if (($populationSuccesses <= 0) || ($populationSuccesses > $populationNumber)) {

-				return PHPExcel_Calculation_Functions::NaN();

-			}

-			return PHPExcel_Calculation_MathTrig::COMBIN($populationSuccesses,$sampleSuccesses) *

-				   PHPExcel_Calculation_MathTrig::COMBIN($populationNumber - $populationSuccesses,$sampleNumber - $sampleSuccesses) /

-				   PHPExcel_Calculation_MathTrig::COMBIN($populationNumber,$sampleNumber);

-		}

-		return PHPExcel_Calculation_Functions::VALUE();

-	}	//	function HYPGEOMDIST()

-

-

-	/**

-	 * INTERCEPT

-	 *

-	 * Calculates the point at which a line will intersect the y-axis by using existing x-values and y-values.

-	 *

-	 * @param	array of mixed		Data Series Y

-	 * @param	array of mixed		Data Series X

-	 * @return	float

-	 */

-	public static function INTERCEPT($yValues,$xValues) {

-		if (!self::_checkTrendArrays($yValues,$xValues)) {

-			return PHPExcel_Calculation_Functions::VALUE();

-		}

-		$yValueCount = count($yValues);

-		$xValueCount = count($xValues);

-

-		if (($yValueCount == 0) || ($yValueCount != $xValueCount)) {

-			return PHPExcel_Calculation_Functions::NA();

-		} elseif ($yValueCount == 1) {

-			return PHPExcel_Calculation_Functions::DIV0();

-		}

-

-		$bestFitLinear = trendClass::calculate(trendClass::TREND_LINEAR,$yValues,$xValues);

-		return $bestFitLinear->getIntersect();

-	}	//	function INTERCEPT()

-

-

-	/**

-	 * KURT

-	 *

-	 * Returns the kurtosis of a data set. Kurtosis characterizes the relative peakedness

-	 * or flatness of a distribution compared with the normal distribution. Positive

-	 * kurtosis indicates a relatively peaked distribution. Negative kurtosis indicates a

-	 * relatively flat distribution.

-	 *

-	 * @param	array	Data Series

-	 * @return	float

-	 */

-	public static function KURT() {

-		$aArgs = PHPExcel_Calculation_Functions::flattenArrayIndexed(func_get_args());

-		$mean = self::AVERAGE($aArgs);

-		$stdDev = self::STDEV($aArgs);

-

-		if ($stdDev > 0) {

-			$count = $summer = 0;

-			// Loop through arguments

-			foreach ($aArgs as $k => $arg) {

-				if ((is_bool($arg)) &&

-					(!PHPExcel_Calculation_Functions::isMatrixValue($k))) {

-				} else {

-					// Is it a numeric value?

-					if ((is_numeric($arg)) && (!is_string($arg))) {

-						$summer += pow((($arg - $mean) / $stdDev),4) ;

-						++$count;

-					}

-				}

-			}

-

-			// Return

-			if ($count > 3) {

-				return $summer * ($count * ($count+1) / (($count-1) * ($count-2) * ($count-3))) - (3 * pow($count-1,2) / (($count-2) * ($count-3)));

-			}

-		}

-		return PHPExcel_Calculation_Functions::DIV0();

-	}	//	function KURT()

-

-

-	/**

-	 * LARGE

-	 *

-	 * Returns the nth largest value in a data set. You can use this function to

-	 *		select a value based on its relative standing.

-	 *

-	 * Excel Function:

-	 *		LARGE(value1[,value2[, ...]],entry)

-	 *

-	 * @access	public

-	 * @category Statistical Functions

-	 * @param	mixed		$arg,...		Data values

-	 * @param	int			$entry			Position (ordered from the largest) in the array or range of data to return

-	 * @return	float

-	 *

-	 */

-	public static function LARGE() {

-		$aArgs = PHPExcel_Calculation_Functions::flattenArray(func_get_args());

-

-		// Calculate

-		$entry = floor(array_pop($aArgs));

-

-		if ((is_numeric($entry)) && (!is_string($entry))) {

-			$mArgs = array();

-			foreach ($aArgs as $arg) {

-				// Is it a numeric value?

-				if ((is_numeric($arg)) && (!is_string($arg))) {

-					$mArgs[] = $arg;

-				}

-			}

-			$count = self::COUNT($mArgs);

-			$entry = floor(--$entry);

-			if (($entry < 0) || ($entry >= $count) || ($count == 0)) {

-				return PHPExcel_Calculation_Functions::NaN();

-			}

-			rsort($mArgs);

-			return $mArgs[$entry];

-		}

-		return PHPExcel_Calculation_Functions::VALUE();

-	}	//	function LARGE()

-

-

-	/**

-	 * LINEST

-	 *

-	 * Calculates the statistics for a line by using the "least squares" method to calculate a straight line that best fits your data,

-	 *		and then returns an array that describes the line.

-	 *

-	 * @param	array of mixed		Data Series Y

-	 * @param	array of mixed		Data Series X

-	 * @param	boolean				A logical value specifying whether to force the intersect to equal 0.

-	 * @param	boolean				A logical value specifying whether to return additional regression statistics.

-	 * @return	array

-	 */

-	public static function LINEST($yValues,$xValues=null,$const=True,$stats=False) {

-		$const	= (is_null($const))	? True :	(boolean) PHPExcel_Calculation_Functions::flattenSingleValue($const);

-		$stats	= (is_null($stats))	? False :	(boolean) PHPExcel_Calculation_Functions::flattenSingleValue($stats);

-		if (is_null($xValues)) $xValues = range(1,count(PHPExcel_Calculation_Functions::flattenArray($yValues)));

-

-		if (!self::_checkTrendArrays($yValues,$xValues)) {

-			return PHPExcel_Calculation_Functions::VALUE();

-		}

-		$yValueCount = count($yValues);

-		$xValueCount = count($xValues);

-

-

-		if (($yValueCount == 0) || ($yValueCount != $xValueCount)) {

-			return PHPExcel_Calculation_Functions::NA();

-		} elseif ($yValueCount == 1) {

-			return 0;

-		}

-

-		$bestFitLinear = trendClass::calculate(trendClass::TREND_LINEAR,$yValues,$xValues,$const);

-		if ($stats) {

-			return array( array( $bestFitLinear->getSlope(),

-						 		 $bestFitLinear->getSlopeSE(),

-						 		 $bestFitLinear->getGoodnessOfFit(),

-						 		 $bestFitLinear->getF(),

-						 		 $bestFitLinear->getSSRegression(),

-							   ),

-						  array( $bestFitLinear->getIntersect(),

-								 $bestFitLinear->getIntersectSE(),

-								 $bestFitLinear->getStdevOfResiduals(),

-								 $bestFitLinear->getDFResiduals(),

-								 $bestFitLinear->getSSResiduals()

-							   )

-						);

-		} else {

-			return array( $bestFitLinear->getSlope(),

-						  $bestFitLinear->getIntersect()

-						);

-		}

-	}	//	function LINEST()

-

-

-	/**

-	 * LOGEST

-	 *

-	 * Calculates an exponential curve that best fits the X and Y data series,

-	 *		and then returns an array that describes the line.

-	 *

-	 * @param	array of mixed		Data Series Y

-	 * @param	array of mixed		Data Series X

-	 * @param	boolean				A logical value specifying whether to force the intersect to equal 0.

-	 * @param	boolean				A logical value specifying whether to return additional regression statistics.

-	 * @return	array

-	 */

-	public static function LOGEST($yValues,$xValues=null,$const=True,$stats=False) {

-		$const	= (is_null($const))	? True :	(boolean) PHPExcel_Calculation_Functions::flattenSingleValue($const);

-		$stats	= (is_null($stats))	? False :	(boolean) PHPExcel_Calculation_Functions::flattenSingleValue($stats);

-		if (is_null($xValues)) $xValues = range(1,count(PHPExcel_Calculation_Functions::flattenArray($yValues)));

-

-		if (!self::_checkTrendArrays($yValues,$xValues)) {

-			return PHPExcel_Calculation_Functions::VALUE();

-		}

-		$yValueCount = count($yValues);

-		$xValueCount = count($xValues);

-

-		foreach($yValues as $value) {

-			if ($value <= 0.0) {

-				return PHPExcel_Calculation_Functions::NaN();

-			}

-		}

-

-

-		if (($yValueCount == 0) || ($yValueCount != $xValueCount)) {

-			return PHPExcel_Calculation_Functions::NA();

-		} elseif ($yValueCount == 1) {

-			return 1;

-		}

-

-		$bestFitExponential = trendClass::calculate(trendClass::TREND_EXPONENTIAL,$yValues,$xValues,$const);

-		if ($stats) {

-			return array( array( $bestFitExponential->getSlope(),

-						 		 $bestFitExponential->getSlopeSE(),

-						 		 $bestFitExponential->getGoodnessOfFit(),

-						 		 $bestFitExponential->getF(),

-						 		 $bestFitExponential->getSSRegression(),

-							   ),

-						  array( $bestFitExponential->getIntersect(),

-								 $bestFitExponential->getIntersectSE(),

-								 $bestFitExponential->getStdevOfResiduals(),

-								 $bestFitExponential->getDFResiduals(),

-								 $bestFitExponential->getSSResiduals()

-							   )

-						);

-		} else {

-			return array( $bestFitExponential->getSlope(),

-						  $bestFitExponential->getIntersect()

-						);

-		}

-	}	//	function LOGEST()

-

-

-	/**

-	 * LOGINV

-	 *

-	 * Returns the inverse of the normal cumulative distribution

-	 *

-	 * @param	float		$value

-	 * @return	float

-	 *

-	 * @todo	Try implementing P J Acklam's refinement algorithm for greater

-	 *			accuracy if I can get my head round the mathematics

-	 *			(as described at) http://home.online.no/~pjacklam/notes/invnorm/

-	 */

-	public static function LOGINV($probability, $mean, $stdDev) {

-		$probability	= PHPExcel_Calculation_Functions::flattenSingleValue($probability);

-		$mean			= PHPExcel_Calculation_Functions::flattenSingleValue($mean);

-		$stdDev			= PHPExcel_Calculation_Functions::flattenSingleValue($stdDev);

-

-		if ((is_numeric($probability)) && (is_numeric($mean)) && (is_numeric($stdDev))) {

-			if (($probability < 0) || ($probability > 1) || ($stdDev <= 0)) {

-				return PHPExcel_Calculation_Functions::NaN();

-			}

-			return exp($mean + $stdDev * self::NORMSINV($probability));

-		}

-		return PHPExcel_Calculation_Functions::VALUE();

-	}	//	function LOGINV()

-

-

-	/**

-	 * LOGNORMDIST

-	 *

-	 * Returns the cumulative lognormal distribution of x, where ln(x) is normally distributed

-	 * with parameters mean and standard_dev.

-	 *

-	 * @param	float		$value

-	 * @return	float

-	 */

-	public static function LOGNORMDIST($value, $mean, $stdDev) {

-		$value	= PHPExcel_Calculation_Functions::flattenSingleValue($value);

-		$mean	= PHPExcel_Calculation_Functions::flattenSingleValue($mean);

-		$stdDev	= PHPExcel_Calculation_Functions::flattenSingleValue($stdDev);

-

-		if ((is_numeric($value)) && (is_numeric($mean)) && (is_numeric($stdDev))) {

-			if (($value <= 0) || ($stdDev <= 0)) {

-				return PHPExcel_Calculation_Functions::NaN();

-			}

-			return self::NORMSDIST((log($value) - $mean) / $stdDev);

-		}

-		return PHPExcel_Calculation_Functions::VALUE();

-	}	//	function LOGNORMDIST()

-

-

-	/**

-	 * MAX

-	 *

-	 * MAX returns the value of the element of the values passed that has the highest value,

-	 *		with negative numbers considered smaller than positive numbers.

-	 *

-	 * Excel Function:

-	 *		MAX(value1[,value2[, ...]])

-	 *

-	 * @access	public

-	 * @category Statistical Functions

-	 * @param	mixed		$arg,...		Data values

-	 * @return	float

-	 */

-	public static function MAX() {

-		// Return value

-		$returnValue = null;

-

-		// Loop through arguments

-		$aArgs = PHPExcel_Calculation_Functions::flattenArray(func_get_args());

-		foreach ($aArgs as $arg) {

-			// Is it a numeric value?

-			if ((is_numeric($arg)) && (!is_string($arg))) {

-				if ((is_null($returnValue)) || ($arg > $returnValue)) {

-					$returnValue = $arg;

-				}

-			}

-		}

-

-		// Return

-		if(is_null($returnValue)) {

-			return 0;

-		}

-		return $returnValue;

-	}	//	function MAX()

-

-

-	/**

-	 * MAXA

-	 *

-	 * Returns the greatest value in a list of arguments, including numbers, text, and logical values

-	 *

-	 * Excel Function:

-	 *		MAXA(value1[,value2[, ...]])

-	 *

-	 * @access	public

-	 * @category Statistical Functions

-	 * @param	mixed		$arg,...		Data values

-	 * @return	float

-	 */

-	public static function MAXA() {

-		// Return value

-		$returnValue = null;

-

-		// Loop through arguments

-		$aArgs = PHPExcel_Calculation_Functions::flattenArray(func_get_args());

-		foreach ($aArgs as $arg) {

-			// Is it a numeric value?

-			if ((is_numeric($arg)) || (is_bool($arg)) || ((is_string($arg) && ($arg != '')))) {

-				if (is_bool($arg)) {

-					$arg = (integer) $arg;

-				} elseif (is_string($arg)) {

-					$arg = 0;

-				}

-				if ((is_null($returnValue)) || ($arg > $returnValue)) {

-					$returnValue = $arg;

-				}

-			}

-		}

-

-		// Return

-		if(is_null($returnValue)) {

-			return 0;

-		}

-		return $returnValue;

-	}	//	function MAXA()

-

-

-	/**

-	 * MAXIF

-	 *

-	 * Counts the maximum value within a range of cells that contain numbers within the list of arguments

-	 *

-	 * Excel Function:

-	 *		MAXIF(value1[,value2[, ...]],condition)

-	 *

-	 * @access	public

-	 * @category Mathematical and Trigonometric Functions

-	 * @param	mixed		$arg,...		Data values

-	 * @param	string		$condition		The criteria that defines which cells will be checked.

-	 * @return	float

-	 */

-	public static function MAXIF($aArgs,$condition,$sumArgs = array()) {

-		// Return value

-		$returnValue = null;

-

-		$aArgs = PHPExcel_Calculation_Functions::flattenArray($aArgs);

-		$sumArgs = PHPExcel_Calculation_Functions::flattenArray($sumArgs);

-		if (empty($sumArgs)) {

-			$sumArgs = $aArgs;

-		}

-		$condition = PHPExcel_Calculation_Functions::_ifCondition($condition);

-		// Loop through arguments

-		foreach ($aArgs as $key => $arg) {

-			if (!is_numeric($arg)) { $arg = PHPExcel_Calculation::_wrapResult(strtoupper($arg)); }

-			$testCondition = '='.$arg.$condition;

-			if (PHPExcel_Calculation::getInstance()->_calculateFormulaValue($testCondition)) {

-				if ((is_null($returnValue)) || ($arg > $returnValue)) {

-					$returnValue = $arg;

-				}

-			}

-		}

-

-		// Return

-		return $returnValue;

-	}	//	function MAXIF()

-

-

-	/**

-	 * MEDIAN

-	 *

-	 * Returns the median of the given numbers. The median is the number in the middle of a set of numbers.

-	 *

-	 * Excel Function:

-	 *		MEDIAN(value1[,value2[, ...]])

-	 *

-	 * @access	public

-	 * @category Statistical Functions

-	 * @param	mixed		$arg,...		Data values

-	 * @return	float

-	 */

-	public static function MEDIAN() {

-		// Return value

-		$returnValue = PHPExcel_Calculation_Functions::NaN();

-

-		$mArgs = array();

-		// Loop through arguments

-		$aArgs = PHPExcel_Calculation_Functions::flattenArray(func_get_args());

-		foreach ($aArgs as $arg) {

-			// Is it a numeric value?

-			if ((is_numeric($arg)) && (!is_string($arg))) {

-				$mArgs[] = $arg;

-			}

-		}

-

-		$mValueCount = count($mArgs);

-		if ($mValueCount > 0) {

-			sort($mArgs,SORT_NUMERIC);

-			$mValueCount = $mValueCount / 2;

-			if ($mValueCount == floor($mValueCount)) {

-				$returnValue = ($mArgs[$mValueCount--] + $mArgs[$mValueCount]) / 2;

-			} else {

-				$mValueCount == floor($mValueCount);

-				$returnValue = $mArgs[$mValueCount];

-			}

-		}

-

-		// Return

-		return $returnValue;

-	}	//	function MEDIAN()

-

-

-	/**

-	 * MIN

-	 *

-	 * MIN returns the value of the element of the values passed that has the smallest value,

-	 *		with negative numbers considered smaller than positive numbers.

-	 *

-	 * Excel Function:

-	 *		MIN(value1[,value2[, ...]])

-	 *

-	 * @access	public

-	 * @category Statistical Functions

-	 * @param	mixed		$arg,...		Data values

-	 * @return	float

-	 */

-	public static function MIN() {

-		// Return value

-		$returnValue = null;

-

-		// Loop through arguments

-		$aArgs = PHPExcel_Calculation_Functions::flattenArray(func_get_args());

-		foreach ($aArgs as $arg) {

-			// Is it a numeric value?

-			if ((is_numeric($arg)) && (!is_string($arg))) {

-				if ((is_null($returnValue)) || ($arg < $returnValue)) {

-					$returnValue = $arg;

-				}

-			}

-		}

-

-		// Return

-		if(is_null($returnValue)) {

-			return 0;

-		}

-		return $returnValue;

-	}	//	function MIN()

-

-

-	/**

-	 * MINA

-	 *

-	 * Returns the smallest value in a list of arguments, including numbers, text, and logical values

-	 *

-	 * Excel Function:

-	 *		MINA(value1[,value2[, ...]])

-	 *

-	 * @access	public

-	 * @category Statistical Functions

-	 * @param	mixed		$arg,...		Data values

-	 * @return	float

-	 */

-	public static function MINA() {

-		// Return value

-		$returnValue = null;

-

-		// Loop through arguments

-		$aArgs = PHPExcel_Calculation_Functions::flattenArray(func_get_args());

-		foreach ($aArgs as $arg) {

-			// Is it a numeric value?

-			if ((is_numeric($arg)) || (is_bool($arg)) || ((is_string($arg) && ($arg != '')))) {

-				if (is_bool($arg)) {

-					$arg = (integer) $arg;

-				} elseif (is_string($arg)) {

-					$arg = 0;

-				}

-				if ((is_null($returnValue)) || ($arg < $returnValue)) {

-					$returnValue = $arg;

-				}

-			}

-		}

-

-		// Return

-		if(is_null($returnValue)) {

-			return 0;

-		}

-		return $returnValue;

-	}	//	function MINA()

-

-

-	/**

-	 * MINIF

-	 *

-	 * Returns the minimum value within a range of cells that contain numbers within the list of arguments

-	 *

-	 * Excel Function:

-	 *		MINIF(value1[,value2[, ...]],condition)

-	 *

-	 * @access	public

-	 * @category Mathematical and Trigonometric Functions

-	 * @param	mixed		$arg,...		Data values

-	 * @param	string		$condition		The criteria that defines which cells will be checked.

-	 * @return	float

-	 */

-	public static function MINIF($aArgs,$condition,$sumArgs = array()) {

-		// Return value

-		$returnValue = null;

-

-		$aArgs = PHPExcel_Calculation_Functions::flattenArray($aArgs);

-		$sumArgs = PHPExcel_Calculation_Functions::flattenArray($sumArgs);

-		if (empty($sumArgs)) {

-			$sumArgs = $aArgs;

-		}

-		$condition = PHPExcel_Calculation_Functions::_ifCondition($condition);

-		// Loop through arguments

-		foreach ($aArgs as $key => $arg) {

-			if (!is_numeric($arg)) { $arg = PHPExcel_Calculation::_wrapResult(strtoupper($arg)); }

-			$testCondition = '='.$arg.$condition;

-			if (PHPExcel_Calculation::getInstance()->_calculateFormulaValue($testCondition)) {

-				if ((is_null($returnValue)) || ($arg < $returnValue)) {

-					$returnValue = $arg;

-				}

-			}

-		}

-

-		// Return

-		return $returnValue;

-	}	//	function MINIF()

-

-

-	//

-	//	Special variant of array_count_values that isn't limited to strings and integers,

-	//		but can work with floating point numbers as values

-	//

-	private static function _modeCalc($data) {

-		$frequencyArray = array();

-		foreach($data as $datum) {

-			$found = False;

-			foreach($frequencyArray as $key => $value) {

-				if ((string) $value['value'] == (string) $datum) {

-					++$frequencyArray[$key]['frequency'];

-					$found = True;

-					break;

-				}

-			}

-			if (!$found) {

-				$frequencyArray[] = array('value'		=> $datum,

-										  'frequency'	=>	1 );

-			}

-		}

-

-		foreach($frequencyArray as $key => $value) {

-			$frequencyList[$key] = $value['frequency'];

-			$valueList[$key] = $value['value'];

-		}

-		array_multisort($frequencyList, SORT_DESC, $valueList, SORT_ASC, SORT_NUMERIC, $frequencyArray);

-

-		if ($frequencyArray[0]['frequency'] == 1) {

-			return PHPExcel_Calculation_Functions::NA();

-		}

-		return $frequencyArray[0]['value'];

-	}	//	function _modeCalc()

-

-

-	/**

-	 * MODE

-	 *

-	 * Returns the most frequently occurring, or repetitive, value in an array or range of data

-	 *

-	 * Excel Function:

-	 *		MODE(value1[,value2[, ...]])

-	 *

-	 * @access	public

-	 * @category Statistical Functions

-	 * @param	mixed		$arg,...		Data values

-	 * @return	float

-	 */

-	public static function MODE() {

-		// Return value

-		$returnValue = PHPExcel_Calculation_Functions::NA();

-

-		// Loop through arguments

-		$aArgs = PHPExcel_Calculation_Functions::flattenArray(func_get_args());

-

-		$mArgs = array();

-		foreach ($aArgs as $arg) {

-			// Is it a numeric value?

-			if ((is_numeric($arg)) && (!is_string($arg))) {

-				$mArgs[] = $arg;

-			}

-		}

-

-		if (!empty($mArgs)) {

-			return self::_modeCalc($mArgs);

-		}

-

-		// Return

-		return $returnValue;

-	}	//	function MODE()

-

-

-	/**

-	 * NEGBINOMDIST

-	 *

-	 * Returns the negative binomial distribution. NEGBINOMDIST returns the probability that

-	 *		there will be number_f failures before the number_s-th success, when the constant

-	 *		probability of a success is probability_s. This function is similar to the binomial

-	 *		distribution, except that the number of successes is fixed, and the number of trials is

-	 *		variable. Like the binomial, trials are assumed to be independent.

-	 *

-	 * @param	float		$failures		Number of Failures

-	 * @param	float		$successes		Threshold number of Successes

-	 * @param	float		$probability	Probability of success on each trial

-	 * @return	float

-	 *

-	 */

-	public static function NEGBINOMDIST($failures, $successes, $probability) {

-		$failures		= floor(PHPExcel_Calculation_Functions::flattenSingleValue($failures));

-		$successes		= floor(PHPExcel_Calculation_Functions::flattenSingleValue($successes));

-		$probability	= PHPExcel_Calculation_Functions::flattenSingleValue($probability);

-

-		if ((is_numeric($failures)) && (is_numeric($successes)) && (is_numeric($probability))) {

-			if (($failures < 0) || ($successes < 1)) {

-				return PHPExcel_Calculation_Functions::NaN();

-			}

-			if (($probability < 0) || ($probability > 1)) {

-				return PHPExcel_Calculation_Functions::NaN();

-			}

-			if (PHPExcel_Calculation_Functions::getCompatibilityMode() == PHPExcel_Calculation_Functions::COMPATIBILITY_GNUMERIC) {

-				if (($failures + $successes - 1) <= 0) {

-					return PHPExcel_Calculation_Functions::NaN();

-				}

-			}

-			return (PHPExcel_Calculation_MathTrig::COMBIN($failures + $successes - 1,$successes - 1)) * (pow($probability,$successes)) * (pow(1 - $probability,$failures)) ;

-		}

-		return PHPExcel_Calculation_Functions::VALUE();

-	}	//	function NEGBINOMDIST()

-

-

-	/**

-	 * NORMDIST

-	 *

-	 * Returns the normal distribution for the specified mean and standard deviation. This

-	 * function has a very wide range of applications in statistics, including hypothesis

-	 * testing.

-	 *

-	 * @param	float		$value

-	 * @param	float		$mean		Mean Value

-	 * @param	float		$stdDev		Standard Deviation

-	 * @param	boolean		$cumulative

-	 * @return	float

-	 *

-	 */

-	public static function NORMDIST($value, $mean, $stdDev, $cumulative) {

-		$value	= PHPExcel_Calculation_Functions::flattenSingleValue($value);

-		$mean	= PHPExcel_Calculation_Functions::flattenSingleValue($mean);

-		$stdDev	= PHPExcel_Calculation_Functions::flattenSingleValue($stdDev);

-

-		if ((is_numeric($value)) && (is_numeric($mean)) && (is_numeric($stdDev))) {

-			if ($stdDev < 0) {

-				return PHPExcel_Calculation_Functions::NaN();

-			}

-			if ((is_numeric($cumulative)) || (is_bool($cumulative))) {

-				if ($cumulative) {

-					return 0.5 * (1 + PHPExcel_Calculation_Engineering::_erfVal(($value - $mean) / ($stdDev * sqrt(2))));

-				} else {

-					return (1 / (SQRT2PI * $stdDev)) * exp(0 - (pow($value - $mean,2) / (2 * ($stdDev * $stdDev))));

-				}

-			}

-		}

-		return PHPExcel_Calculation_Functions::VALUE();

-	}	//	function NORMDIST()

-

-

-	/**

-	 * NORMINV

-	 *

-	 * Returns the inverse of the normal cumulative distribution for the specified mean and standard deviation.

-	 *

-	 * @param	float		$value

-	 * @param	float		$mean		Mean Value

-	 * @param	float		$stdDev		Standard Deviation

-	 * @return	float

-	 *

-	 */

-	public static function NORMINV($probability,$mean,$stdDev) {

-		$probability	= PHPExcel_Calculation_Functions::flattenSingleValue($probability);

-		$mean			= PHPExcel_Calculation_Functions::flattenSingleValue($mean);

-		$stdDev			= PHPExcel_Calculation_Functions::flattenSingleValue($stdDev);

-

-		if ((is_numeric($probability)) && (is_numeric($mean)) && (is_numeric($stdDev))) {

-			if (($probability < 0) || ($probability > 1)) {

-				return PHPExcel_Calculation_Functions::NaN();

-			}

-			if ($stdDev < 0) {

-				return PHPExcel_Calculation_Functions::NaN();

-			}

-			return (self::_inverse_ncdf($probability) * $stdDev) + $mean;

-		}

-		return PHPExcel_Calculation_Functions::VALUE();

-	}	//	function NORMINV()

-

-

-	/**

-	 * NORMSDIST

-	 *

-	 * Returns the standard normal cumulative distribution function. The distribution has

-	 * a mean of 0 (zero) and a standard deviation of one. Use this function in place of a

-	 * table of standard normal curve areas.

-	 *

-	 * @param	float		$value

-	 * @return	float

-	 */

-	public static function NORMSDIST($value) {

-		$value	= PHPExcel_Calculation_Functions::flattenSingleValue($value);

-

-		return self::NORMDIST($value, 0, 1, True);

-	}	//	function NORMSDIST()

-

-

-	/**

-	 * NORMSINV

-	 *

-	 * Returns the inverse of the standard normal cumulative distribution

-	 *

-	 * @param	float		$value

-	 * @return	float

-	 */

-	public static function NORMSINV($value) {

-		return self::NORMINV($value, 0, 1);

-	}	//	function NORMSINV()

-

-

-	/**

-	 * PERCENTILE

-	 *

-	 * Returns the nth percentile of values in a range..

-	 *

-	 * Excel Function:

-	 *		PERCENTILE(value1[,value2[, ...]],entry)

-	 *

-	 * @access	public

-	 * @category Statistical Functions

-	 * @param	mixed		$arg,...		Data values

-	 * @param	float		$entry			Percentile value in the range 0..1, inclusive.

-	 * @return	float

-	 */

-	public static function PERCENTILE() {

-		$aArgs = PHPExcel_Calculation_Functions::flattenArray(func_get_args());

-

-		// Calculate

-		$entry = array_pop($aArgs);

-

-		if ((is_numeric($entry)) && (!is_string($entry))) {

-			if (($entry < 0) || ($entry > 1)) {

-				return PHPExcel_Calculation_Functions::NaN();

-			}

-			$mArgs = array();

-			foreach ($aArgs as $arg) {

-				// Is it a numeric value?

-				if ((is_numeric($arg)) && (!is_string($arg))) {

-					$mArgs[] = $arg;

-				}

-			}

-			$mValueCount = count($mArgs);

-			if ($mValueCount > 0) {

-				sort($mArgs);

-				$count = self::COUNT($mArgs);

-				$index = $entry * ($count-1);

-				$iBase = floor($index);

-				if ($index == $iBase) {

-					return $mArgs[$index];

-				} else {

-					$iNext = $iBase + 1;

-					$iProportion = $index - $iBase;

-					return $mArgs[$iBase] + (($mArgs[$iNext] - $mArgs[$iBase]) * $iProportion) ;

-				}

-			}

-		}

-		return PHPExcel_Calculation_Functions::VALUE();

-	}	//	function PERCENTILE()

-

-

-	/**

-	 * PERCENTRANK

-	 *

-	 * Returns the rank of a value in a data set as a percentage of the data set.

-	 *

-	 * @param	array of number		An array of, or a reference to, a list of numbers.

-	 * @param	number				The number whose rank you want to find.

-	 * @param	number				The number of significant digits for the returned percentage value.

-	 * @return	float

-	 */

-	public static function PERCENTRANK($valueSet,$value,$significance=3) {

-		$valueSet	= PHPExcel_Calculation_Functions::flattenArray($valueSet);

-		$value		= PHPExcel_Calculation_Functions::flattenSingleValue($value);

-		$significance	= (is_null($significance))	? 3 :	(integer) PHPExcel_Calculation_Functions::flattenSingleValue($significance);

-

-		foreach($valueSet as $key => $valueEntry) {

-			if (!is_numeric($valueEntry)) {

-				unset($valueSet[$key]);

-			}

-		}

-		sort($valueSet,SORT_NUMERIC);

-		$valueCount = count($valueSet);

-		if ($valueCount == 0) {

-			return PHPExcel_Calculation_Functions::NaN();

-		}

-

-		$valueAdjustor = $valueCount - 1;

-		if (($value < $valueSet[0]) || ($value > $valueSet[$valueAdjustor])) {

-			return PHPExcel_Calculation_Functions::NA();

-		}

-

-		$pos = array_search($value,$valueSet);

-		if ($pos === False) {

-			$pos = 0;

-			$testValue = $valueSet[0];

-			while ($testValue < $value) {

-				$testValue = $valueSet[++$pos];

-			}

-			--$pos;

-			$pos += (($value - $valueSet[$pos]) / ($testValue - $valueSet[$pos]));

-		}

-

-		return round($pos / $valueAdjustor,$significance);

-	}	//	function PERCENTRANK()

-

-

-	/**

-	 * PERMUT

-	 *

-	 * Returns the number of permutations for a given number of objects that can be

-	 *		selected from number objects. A permutation is any set or subset of objects or

-	 *		events where internal order is significant. Permutations are different from

-	 *		combinations, for which the internal order is not significant. Use this function

-	 *		for lottery-style probability calculations.

-	 *

-	 * @param	int		$numObjs	Number of different objects

-	 * @param	int		$numInSet	Number of objects in each permutation

-	 * @return	int		Number of permutations

-	 */

-	public static function PERMUT($numObjs,$numInSet) {

-		$numObjs	= PHPExcel_Calculation_Functions::flattenSingleValue($numObjs);

-		$numInSet	= PHPExcel_Calculation_Functions::flattenSingleValue($numInSet);

-

-		if ((is_numeric($numObjs)) && (is_numeric($numInSet))) {

-			$numInSet = floor($numInSet);

-			if ($numObjs < $numInSet) {

-				return PHPExcel_Calculation_Functions::NaN();

-			}

-			return round(PHPExcel_Calculation_MathTrig::FACT($numObjs) / PHPExcel_Calculation_MathTrig::FACT($numObjs - $numInSet));

-		}

-		return PHPExcel_Calculation_Functions::VALUE();

-	}	//	function PERMUT()

-

-

-	/**

-	 * POISSON

-	 *

-	 * Returns the Poisson distribution. A common application of the Poisson distribution

-	 * is predicting the number of events over a specific time, such as the number of

-	 * cars arriving at a toll plaza in 1 minute.

-	 *

-	 * @param	float		$value

-	 * @param	float		$mean		Mean Value

-	 * @param	boolean		$cumulative

-	 * @return	float

-	 *

-	 */

-	public static function POISSON($value, $mean, $cumulative) {

-		$value	= PHPExcel_Calculation_Functions::flattenSingleValue($value);

-		$mean	= PHPExcel_Calculation_Functions::flattenSingleValue($mean);

-

-		if ((is_numeric($value)) && (is_numeric($mean))) {

-			if (($value <= 0) || ($mean <= 0)) {

-				return PHPExcel_Calculation_Functions::NaN();

-			}

-			if ((is_numeric($cumulative)) || (is_bool($cumulative))) {

-				if ($cumulative) {

-					$summer = 0;

-					for ($i = 0; $i <= floor($value); ++$i) {

-						$summer += pow($mean,$i) / PHPExcel_Calculation_MathTrig::FACT($i);

-					}

-					return exp(0-$mean) * $summer;

-				} else {

-					return (exp(0-$mean) * pow($mean,$value)) / PHPExcel_Calculation_MathTrig::FACT($value);

-				}

-			}

-		}

-		return PHPExcel_Calculation_Functions::VALUE();

-	}	//	function POISSON()

-

-

-	/**

-	 * QUARTILE

-	 *

-	 * Returns the quartile of a data set.

-	 *

-	 * Excel Function:

-	 *		QUARTILE(value1[,value2[, ...]],entry)

-	 *

-	 * @access	public

-	 * @category Statistical Functions

-	 * @param	mixed		$arg,...		Data values

-	 * @param	int			$entry			Quartile value in the range 1..3, inclusive.

-	 * @return	float

-	 */

-	public static function QUARTILE() {

-		$aArgs = PHPExcel_Calculation_Functions::flattenArray(func_get_args());

-

-		// Calculate

-		$entry = floor(array_pop($aArgs));

-

-		if ((is_numeric($entry)) && (!is_string($entry))) {

-			$entry /= 4;

-			if (($entry < 0) || ($entry > 1)) {

-				return PHPExcel_Calculation_Functions::NaN();

-			}

-			return self::PERCENTILE($aArgs,$entry);

-		}

-		return PHPExcel_Calculation_Functions::VALUE();

-	}	//	function QUARTILE()

-

-

-	/**

-	 * RANK

-	 *

-	 * Returns the rank of a number in a list of numbers.

-	 *

-	 * @param	number				The number whose rank you want to find.

-	 * @param	array of number		An array of, or a reference to, a list of numbers.

-	 * @param	mixed				Order to sort the values in the value set

-	 * @return	float

-	 */

-	public static function RANK($value,$valueSet,$order=0) {

-		$value = PHPExcel_Calculation_Functions::flattenSingleValue($value);

-		$valueSet = PHPExcel_Calculation_Functions::flattenArray($valueSet);

-		$order	= (is_null($order))	? 0 :	(integer) PHPExcel_Calculation_Functions::flattenSingleValue($order);

-

-		foreach($valueSet as $key => $valueEntry) {

-			if (!is_numeric($valueEntry)) {

-				unset($valueSet[$key]);

-			}

-		}

-

-		if ($order == 0) {

-			rsort($valueSet,SORT_NUMERIC);

-		} else {

-			sort($valueSet,SORT_NUMERIC);

-		}

-		$pos = array_search($value,$valueSet);

-		if ($pos === False) {

-			return PHPExcel_Calculation_Functions::NA();

-		}

-

-		return ++$pos;

-	}	//	function RANK()

-

-

-	/**

-	 * RSQ

-	 *

-	 * Returns the square of the Pearson product moment correlation coefficient through data points in known_y's and known_x's.

-	 *

-	 * @param	array of mixed		Data Series Y

-	 * @param	array of mixed		Data Series X

-	 * @return	float

-	 */

-	public static function RSQ($yValues,$xValues) {

-		if (!self::_checkTrendArrays($yValues,$xValues)) {

-			return PHPExcel_Calculation_Functions::VALUE();

-		}

-		$yValueCount = count($yValues);

-		$xValueCount = count($xValues);

-

-		if (($yValueCount == 0) || ($yValueCount != $xValueCount)) {

-			return PHPExcel_Calculation_Functions::NA();

-		} elseif ($yValueCount == 1) {

-			return PHPExcel_Calculation_Functions::DIV0();

-		}

-

-		$bestFitLinear = trendClass::calculate(trendClass::TREND_LINEAR,$yValues,$xValues);

-		return $bestFitLinear->getGoodnessOfFit();

-	}	//	function RSQ()

-

-

-	/**

-	 * SKEW

-	 *

-	 * Returns the skewness of a distribution. Skewness characterizes the degree of asymmetry

-	 * of a distribution around its mean. Positive skewness indicates a distribution with an

-	 * asymmetric tail extending toward more positive values. Negative skewness indicates a

-	 * distribution with an asymmetric tail extending toward more negative values.

-	 *

-	 * @param	array	Data Series

-	 * @return	float

-	 */

-	public static function SKEW() {

-		$aArgs = PHPExcel_Calculation_Functions::flattenArrayIndexed(func_get_args());

-		$mean = self::AVERAGE($aArgs);

-		$stdDev = self::STDEV($aArgs);

-

-		$count = $summer = 0;

-		// Loop through arguments

-		foreach ($aArgs as $k => $arg) {

-			if ((is_bool($arg)) &&

-				(!PHPExcel_Calculation_Functions::isMatrixValue($k))) {

-			} else {

-				// Is it a numeric value?

-				if ((is_numeric($arg)) && (!is_string($arg))) {

-					$summer += pow((($arg - $mean) / $stdDev),3) ;

-					++$count;

-				}

-			}

-		}

-

-		// Return

-		if ($count > 2) {

-			return $summer * ($count / (($count-1) * ($count-2)));

-		}

-		return PHPExcel_Calculation_Functions::DIV0();

-	}	//	function SKEW()

-

-

-	/**

-	 * SLOPE

-	 *

-	 * Returns the slope of the linear regression line through data points in known_y's and known_x's.

-	 *

-	 * @param	array of mixed		Data Series Y

-	 * @param	array of mixed		Data Series X

-	 * @return	float

-	 */

-	public static function SLOPE($yValues,$xValues) {

-		if (!self::_checkTrendArrays($yValues,$xValues)) {

-			return PHPExcel_Calculation_Functions::VALUE();

-		}

-		$yValueCount = count($yValues);

-		$xValueCount = count($xValues);

-

-		if (($yValueCount == 0) || ($yValueCount != $xValueCount)) {

-			return PHPExcel_Calculation_Functions::NA();

-		} elseif ($yValueCount == 1) {

-			return PHPExcel_Calculation_Functions::DIV0();

-		}

-

-		$bestFitLinear = trendClass::calculate(trendClass::TREND_LINEAR,$yValues,$xValues);

-		return $bestFitLinear->getSlope();

-	}	//	function SLOPE()

-

-

-	/**

-	 * SMALL

-	 *

-	 * Returns the nth smallest value in a data set. You can use this function to

-	 *		select a value based on its relative standing.

-	 *

-	 * Excel Function:

-	 *		SMALL(value1[,value2[, ...]],entry)

-	 *

-	 * @access	public

-	 * @category Statistical Functions

-	 * @param	mixed		$arg,...		Data values

-	 * @param	int			$entry			Position (ordered from the smallest) in the array or range of data to return

-	 * @return	float

-	 */

-	public static function SMALL() {

-		$aArgs = PHPExcel_Calculation_Functions::flattenArray(func_get_args());

-

-		// Calculate

-		$entry = array_pop($aArgs);

-

-		if ((is_numeric($entry)) && (!is_string($entry))) {

-			$mArgs = array();

-			foreach ($aArgs as $arg) {

-				// Is it a numeric value?

-				if ((is_numeric($arg)) && (!is_string($arg))) {

-					$mArgs[] = $arg;

-				}

-			}

-			$count = self::COUNT($mArgs);

-			$entry = floor(--$entry);

-			if (($entry < 0) || ($entry >= $count) || ($count == 0)) {

-				return PHPExcel_Calculation_Functions::NaN();

-			}

-			sort($mArgs);

-			return $mArgs[$entry];

-		}

-		return PHPExcel_Calculation_Functions::VALUE();

-	}	//	function SMALL()

-

-

-	/**

-	 * STANDARDIZE

-	 *

-	 * Returns a normalized value from a distribution characterized by mean and standard_dev.

-	 *

-	 * @param	float	$value		Value to normalize

-	 * @param	float	$mean		Mean Value

-	 * @param	float	$stdDev		Standard Deviation

-	 * @return	float	Standardized value

-	 */

-	public static function STANDARDIZE($value,$mean,$stdDev) {

-		$value	= PHPExcel_Calculation_Functions::flattenSingleValue($value);

-		$mean	= PHPExcel_Calculation_Functions::flattenSingleValue($mean);

-		$stdDev	= PHPExcel_Calculation_Functions::flattenSingleValue($stdDev);

-

-		if ((is_numeric($value)) && (is_numeric($mean)) && (is_numeric($stdDev))) {

-			if ($stdDev <= 0) {

-				return PHPExcel_Calculation_Functions::NaN();

-			}

-			return ($value - $mean) / $stdDev ;

-		}

-		return PHPExcel_Calculation_Functions::VALUE();

-	}	//	function STANDARDIZE()

-

-

-	/**

-	 * STDEV

-	 *

-	 * Estimates standard deviation based on a sample. The standard deviation is a measure of how

-	 *		widely values are dispersed from the average value (the mean).

-	 *

-	 * Excel Function:

-	 *		STDEV(value1[,value2[, ...]])

-	 *

-	 * @access	public

-	 * @category Statistical Functions

-	 * @param	mixed		$arg,...		Data values

-	 * @return	float

-	 */

-	public static function STDEV() {

-		$aArgs = PHPExcel_Calculation_Functions::flattenArrayIndexed(func_get_args());

-

-		// Return value

-		$returnValue = null;

-

-		$aMean = self::AVERAGE($aArgs);

-		if (!is_null($aMean)) {

-			$aCount = -1;

-			foreach ($aArgs as $k => $arg) {

-				if ((is_bool($arg)) &&

-					((!PHPExcel_Calculation_Functions::isCellValue($k)) || (PHPExcel_Calculation_Functions::getCompatibilityMode() == PHPExcel_Calculation_Functions::COMPATIBILITY_OPENOFFICE))) {

-					$arg = (integer) $arg;

-				}

-				// Is it a numeric value?

-				if ((is_numeric($arg)) && (!is_string($arg))) {

-					if (is_null($returnValue)) {

-						$returnValue = pow(($arg - $aMean),2);

-					} else {

-						$returnValue += pow(($arg - $aMean),2);

-					}

-					++$aCount;

-				}

-			}

-

-			// Return

-			if (($aCount > 0) && ($returnValue >= 0)) {

-				return sqrt($returnValue / $aCount);

-			}

-		}

-		return PHPExcel_Calculation_Functions::DIV0();

-	}	//	function STDEV()

-

-

-	/**

-	 * STDEVA

-	 *

-	 * Estimates standard deviation based on a sample, including numbers, text, and logical values

-	 *

-	 * Excel Function:

-	 *		STDEVA(value1[,value2[, ...]])

-	 *

-	 * @access	public

-	 * @category Statistical Functions

-	 * @param	mixed		$arg,...		Data values

-	 * @return	float

-	 */

-	public static function STDEVA() {

-		$aArgs = PHPExcel_Calculation_Functions::flattenArrayIndexed(func_get_args());

-

-		// Return value

-		$returnValue = null;

-

-		$aMean = self::AVERAGEA($aArgs);

-		if (!is_null($aMean)) {

-			$aCount = -1;

-			foreach ($aArgs as $k => $arg) {

-				if ((is_bool($arg)) &&

-					(!PHPExcel_Calculation_Functions::isMatrixValue($k))) {

-				} else {

-					// Is it a numeric value?

-					if ((is_numeric($arg)) || (is_bool($arg)) || ((is_string($arg) & ($arg != '')))) {

-						if (is_bool($arg)) {

-							$arg = (integer) $arg;

-						} elseif (is_string($arg)) {

-							$arg = 0;

-						}

-						if (is_null($returnValue)) {

-							$returnValue = pow(($arg - $aMean),2);

-						} else {

-							$returnValue += pow(($arg - $aMean),2);

-						}

-						++$aCount;

-					}

-				}

-			}

-

-			// Return

-			if (($aCount > 0) && ($returnValue >= 0)) {

-				return sqrt($returnValue / $aCount);

-			}

-		}

-		return PHPExcel_Calculation_Functions::DIV0();

-	}	//	function STDEVA()

-

-

-	/**

-	 * STDEVP

-	 *

-	 * Calculates standard deviation based on the entire population

-	 *

-	 * Excel Function:

-	 *		STDEVP(value1[,value2[, ...]])

-	 *

-	 * @access	public

-	 * @category Statistical Functions

-	 * @param	mixed		$arg,...		Data values

-	 * @return	float

-	 */

-	public static function STDEVP() {

-		$aArgs = PHPExcel_Calculation_Functions::flattenArrayIndexed(func_get_args());

-

-		// Return value

-		$returnValue = null;

-

-		$aMean = self::AVERAGE($aArgs);

-		if (!is_null($aMean)) {

-			$aCount = 0;

-			foreach ($aArgs as $k => $arg) {

-				if ((is_bool($arg)) &&

-					((!PHPExcel_Calculation_Functions::isCellValue($k)) || (PHPExcel_Calculation_Functions::getCompatibilityMode() == PHPExcel_Calculation_Functions::COMPATIBILITY_OPENOFFICE))) {

-					$arg = (integer) $arg;

-				}

-				// Is it a numeric value?

-				if ((is_numeric($arg)) && (!is_string($arg))) {

-					if (is_null($returnValue)) {

-						$returnValue = pow(($arg - $aMean),2);

-					} else {

-						$returnValue += pow(($arg - $aMean),2);

-					}

-					++$aCount;

-				}

-			}

-

-			// Return

-			if (($aCount > 0) && ($returnValue >= 0)) {

-				return sqrt($returnValue / $aCount);

-			}

-		}

-		return PHPExcel_Calculation_Functions::DIV0();

-	}	//	function STDEVP()

-

-

-	/**

-	 * STDEVPA

-	 *

-	 * Calculates standard deviation based on the entire population, including numbers, text, and logical values

-	 *

-	 * Excel Function:

-	 *		STDEVPA(value1[,value2[, ...]])

-	 *

-	 * @access	public

-	 * @category Statistical Functions

-	 * @param	mixed		$arg,...		Data values

-	 * @return	float

-	 */

-	public static function STDEVPA() {

-		$aArgs = PHPExcel_Calculation_Functions::flattenArrayIndexed(func_get_args());

-

-		// Return value

-		$returnValue = null;

-

-		$aMean = self::AVERAGEA($aArgs);

-		if (!is_null($aMean)) {

-			$aCount = 0;

-			foreach ($aArgs as $k => $arg) {

-				if ((is_bool($arg)) &&

-					(!PHPExcel_Calculation_Functions::isMatrixValue($k))) {

-				} else {

-					// Is it a numeric value?

-					if ((is_numeric($arg)) || (is_bool($arg)) || ((is_string($arg) & ($arg != '')))) {

-						if (is_bool($arg)) {

-							$arg = (integer) $arg;

-						} elseif (is_string($arg)) {

-							$arg = 0;

-						}

-						if (is_null($returnValue)) {

-							$returnValue = pow(($arg - $aMean),2);

-						} else {

-							$returnValue += pow(($arg - $aMean),2);

-						}

-						++$aCount;

-					}

-				}

-			}

-

-			// Return

-			if (($aCount > 0) && ($returnValue >= 0)) {

-				return sqrt($returnValue / $aCount);

-			}

-		}

-		return PHPExcel_Calculation_Functions::DIV0();

-	}	//	function STDEVPA()

-

-

-	/**

-	 * STEYX

-	 *

-	 * Returns the standard error of the predicted y-value for each x in the regression.

-	 *

-	 * @param	array of mixed		Data Series Y

-	 * @param	array of mixed		Data Series X

-	 * @return	float

-	 */

-	public static function STEYX($yValues,$xValues) {

-		if (!self::_checkTrendArrays($yValues,$xValues)) {

-			return PHPExcel_Calculation_Functions::VALUE();

-		}

-		$yValueCount = count($yValues);

-		$xValueCount = count($xValues);

-

-		if (($yValueCount == 0) || ($yValueCount != $xValueCount)) {

-			return PHPExcel_Calculation_Functions::NA();

-		} elseif ($yValueCount == 1) {

-			return PHPExcel_Calculation_Functions::DIV0();

-		}

-

-		$bestFitLinear = trendClass::calculate(trendClass::TREND_LINEAR,$yValues,$xValues);

-		return $bestFitLinear->getStdevOfResiduals();

-	}	//	function STEYX()

-

-

-	/**

-	 * TDIST

-	 *

-	 * Returns the probability of Student's T distribution.

-	 *

-	 * @param	float		$value			Value for the function

-	 * @param	float		$degrees		degrees of freedom

-	 * @param	float		$tails			number of tails (1 or 2)

-	 * @return	float

-	 */

-	public static function TDIST($value, $degrees, $tails) {

-		$value		= PHPExcel_Calculation_Functions::flattenSingleValue($value);

-		$degrees	= floor(PHPExcel_Calculation_Functions::flattenSingleValue($degrees));

-		$tails		= floor(PHPExcel_Calculation_Functions::flattenSingleValue($tails));

-

-		if ((is_numeric($value)) && (is_numeric($degrees)) && (is_numeric($tails))) {

-			if (($value < 0) || ($degrees < 1) || ($tails < 1) || ($tails > 2)) {

-				return PHPExcel_Calculation_Functions::NaN();

-			}

-			//	tdist, which finds the probability that corresponds to a given value

-			//	of t with k degrees of freedom. This algorithm is translated from a

-			//	pascal function on p81 of "Statistical Computing in Pascal" by D

-			//	Cooke, A H Craven & G M Clark (1985: Edward Arnold (Pubs.) Ltd:

-			//	London). The above Pascal algorithm is itself a translation of the

-			//	fortran algoritm "AS 3" by B E Cooper of the Atlas Computer

-			//	Laboratory as reported in (among other places) "Applied Statistics

-			//	Algorithms", editied by P Griffiths and I D Hill (1985; Ellis

-			//	Horwood Ltd.; W. Sussex, England).

-			$tterm = $degrees;

-			$ttheta = atan2($value,sqrt($tterm));

-			$tc = cos($ttheta);

-			$ts = sin($ttheta);

-			$tsum = 0;

-

-			if (($degrees % 2) == 1) {

-				$ti = 3;

-				$tterm = $tc;

-			} else {

-				$ti = 2;

-				$tterm = 1;

-			}

-

-			$tsum = $tterm;

-			while ($ti < $degrees) {

-				$tterm *= $tc * $tc * ($ti - 1) / $ti;

-				$tsum += $tterm;

-				$ti += 2;

-			}

-			$tsum *= $ts;

-			if (($degrees % 2) == 1) { $tsum = M_2DIVPI * ($tsum + $ttheta); }

-			$tValue = 0.5 * (1 + $tsum);

-			if ($tails == 1) {

-				return 1 - abs($tValue);

-			} else {

-				return 1 - abs((1 - $tValue) - $tValue);

-			}

-		}

-		return PHPExcel_Calculation_Functions::VALUE();

-	}	//	function TDIST()

-

-

-	/**

-	 * TINV

-	 *

-	 * Returns the one-tailed probability of the chi-squared distribution.

-	 *

-	 * @param	float		$probability	Probability for the function

-	 * @param	float		$degrees		degrees of freedom

-	 * @return	float

-	 */

-	public static function TINV($probability, $degrees) {

-		$probability	= PHPExcel_Calculation_Functions::flattenSingleValue($probability);

-		$degrees		= floor(PHPExcel_Calculation_Functions::flattenSingleValue($degrees));

-

-		if ((is_numeric($probability)) && (is_numeric($degrees))) {

-			$xLo = 100;

-			$xHi = 0;

-

-			$x = $xNew = 1;

-			$dx	= 1;

-			$i = 0;

-

-			while ((abs($dx) > PRECISION) && ($i++ < MAX_ITERATIONS)) {

-				// Apply Newton-Raphson step

-				$result = self::TDIST($x, $degrees, 2);

-				$error = $result - $probability;

-				if ($error == 0.0) {

-					$dx = 0;

-				} elseif ($error < 0.0) {

-					$xLo = $x;

-				} else {

-					$xHi = $x;

-				}

-				// Avoid division by zero

-				if ($result != 0.0) {

-					$dx = $error / $result;

-					$xNew = $x - $dx;

-				}

-				// If the NR fails to converge (which for example may be the

-				// case if the initial guess is too rough) we apply a bisection

-				// step to determine a more narrow interval around the root.

-				if (($xNew < $xLo) || ($xNew > $xHi) || ($result == 0.0)) {

-					$xNew = ($xLo + $xHi) / 2;

-					$dx = $xNew - $x;

-				}

-				$x = $xNew;

-			}

-			if ($i == MAX_ITERATIONS) {

-				return PHPExcel_Calculation_Functions::NA();

-			}

-			return round($x,12);

-		}

-		return PHPExcel_Calculation_Functions::VALUE();

-	}	//	function TINV()

-

-

-	/**

-	 * TREND

-	 *

-	 * Returns values along a linear trend

-	 *

-	 * @param	array of mixed		Data Series Y

-	 * @param	array of mixed		Data Series X

-	 * @param	array of mixed		Values of X for which we want to find Y

-	 * @param	boolean				A logical value specifying whether to force the intersect to equal 0.

-	 * @return	array of float

-	 */

-	public static function TREND($yValues,$xValues=array(),$newValues=array(),$const=True) {

-		$yValues = PHPExcel_Calculation_Functions::flattenArray($yValues);

-		$xValues = PHPExcel_Calculation_Functions::flattenArray($xValues);

-		$newValues = PHPExcel_Calculation_Functions::flattenArray($newValues);

-		$const	= (is_null($const))	? True :	(boolean) PHPExcel_Calculation_Functions::flattenSingleValue($const);

-

-		$bestFitLinear = trendClass::calculate(trendClass::TREND_LINEAR,$yValues,$xValues,$const);

-		if (empty($newValues)) {

-			$newValues = $bestFitLinear->getXValues();

-		}

-

-		$returnArray = array();

-		foreach($newValues as $xValue) {

-			$returnArray[0][] = $bestFitLinear->getValueOfYForX($xValue);

-		}

-

-		return $returnArray;

-	}	//	function TREND()

-

-

-	/**

-	 * TRIMMEAN

-	 *

-	 * Returns the mean of the interior of a data set. TRIMMEAN calculates the mean

-	 *		taken by excluding a percentage of data points from the top and bottom tails

-	 *		of a data set.

-	 *

-	 * Excel Function:

-	 *		TRIMEAN(value1[,value2[, ...]],$discard)

-	 *

-	 * @access	public

-	 * @category Statistical Functions

-	 * @param	mixed		$arg,...		Data values

-	 * @param	float		$discard		Percentage to discard

-	 * @return	float

-	 */

-	public static function TRIMMEAN() {

-		$aArgs = PHPExcel_Calculation_Functions::flattenArray(func_get_args());

-

-		// Calculate

-		$percent = array_pop($aArgs);

-

-		if ((is_numeric($percent)) && (!is_string($percent))) {

-			if (($percent < 0) || ($percent > 1)) {

-				return PHPExcel_Calculation_Functions::NaN();

-			}

-			$mArgs = array();

-			foreach ($aArgs as $arg) {

-				// Is it a numeric value?

-				if ((is_numeric($arg)) && (!is_string($arg))) {

-					$mArgs[] = $arg;

-				}

-			}

-			$discard = floor(self::COUNT($mArgs) * $percent / 2);

-			sort($mArgs);

-			for ($i=0; $i < $discard; ++$i) {

-				array_pop($mArgs);

-				array_shift($mArgs);

-			}

-			return self::AVERAGE($mArgs);

-		}

-		return PHPExcel_Calculation_Functions::VALUE();

-	}	//	function TRIMMEAN()

-

-

-	/**

-	 * VARFunc

-	 *

-	 * Estimates variance based on a sample.

-	 *

-	 * Excel Function:

-	 *		VAR(value1[,value2[, ...]])

-	 *

-	 * @access	public

-	 * @category Statistical Functions

-	 * @param	mixed		$arg,...		Data values

-	 * @return	float

-	 */

-	public static function VARFunc() {

-		// Return value

-		$returnValue = PHPExcel_Calculation_Functions::DIV0();

-

-		$summerA = $summerB = 0;

-

-		// Loop through arguments

-		$aArgs = PHPExcel_Calculation_Functions::flattenArray(func_get_args());

-		$aCount = 0;

-		foreach ($aArgs as $arg) {

-			if (is_bool($arg)) { $arg = (integer) $arg; }

-			// Is it a numeric value?

-			if ((is_numeric($arg)) && (!is_string($arg))) {

-				$summerA += ($arg * $arg);

-				$summerB += $arg;

-				++$aCount;

-			}

-		}

-

-		// Return

-		if ($aCount > 1) {

-			$summerA *= $aCount;

-			$summerB *= $summerB;

-			$returnValue = ($summerA - $summerB) / ($aCount * ($aCount - 1));

-		}

-		return $returnValue;

-	}	//	function VARFunc()

-

-

-	/**

-	 * VARA

-	 *

-	 * Estimates variance based on a sample, including numbers, text, and logical values

-	 *

-	 * Excel Function:

-	 *		VARA(value1[,value2[, ...]])

-	 *

-	 * @access	public

-	 * @category Statistical Functions

-	 * @param	mixed		$arg,...		Data values

-	 * @return	float

-	 */

-	public static function VARA() {

-		// Return value

-		$returnValue = PHPExcel_Calculation_Functions::DIV0();

-

-		$summerA = $summerB = 0;

-

-		// Loop through arguments

-		$aArgs = PHPExcel_Calculation_Functions::flattenArrayIndexed(func_get_args());

-		$aCount = 0;

-		foreach ($aArgs as $k => $arg) {

-			if ((is_string($arg)) &&

-				(PHPExcel_Calculation_Functions::isValue($k))) {

-				return PHPExcel_Calculation_Functions::VALUE();

-			} elseif ((is_string($arg)) &&

-				(!PHPExcel_Calculation_Functions::isMatrixValue($k))) {

-			} else {

-				// Is it a numeric value?

-				if ((is_numeric($arg)) || (is_bool($arg)) || ((is_string($arg) & ($arg != '')))) {

-					if (is_bool($arg)) {

-						$arg = (integer) $arg;

-					} elseif (is_string($arg)) {

-						$arg = 0;

-					}

-					$summerA += ($arg * $arg);

-					$summerB += $arg;

-					++$aCount;

-				}

-			}

-		}

-

-		// Return

-		if ($aCount > 1) {

-			$summerA *= $aCount;

-			$summerB *= $summerB;

-			$returnValue = ($summerA - $summerB) / ($aCount * ($aCount - 1));

-		}

-		return $returnValue;

-	}	//	function VARA()

-

-

-	/**

-	 * VARP

-	 *

-	 * Calculates variance based on the entire population

-	 *

-	 * Excel Function:

-	 *		VARP(value1[,value2[, ...]])

-	 *

-	 * @access	public

-	 * @category Statistical Functions

-	 * @param	mixed		$arg,...		Data values

-	 * @return	float

-	 */

-	public static function VARP() {

-		// Return value

-		$returnValue = PHPExcel_Calculation_Functions::DIV0();

-

-		$summerA = $summerB = 0;

-

-		// Loop through arguments

-		$aArgs = PHPExcel_Calculation_Functions::flattenArray(func_get_args());

-		$aCount = 0;

-		foreach ($aArgs as $arg) {

-			if (is_bool($arg)) { $arg = (integer) $arg; }

-			// Is it a numeric value?

-			if ((is_numeric($arg)) && (!is_string($arg))) {

-				$summerA += ($arg * $arg);

-				$summerB += $arg;

-				++$aCount;

-			}

-		}

-

-		// Return

-		if ($aCount > 0) {

-			$summerA *= $aCount;

-			$summerB *= $summerB;

-			$returnValue = ($summerA - $summerB) / ($aCount * $aCount);

-		}

-		return $returnValue;

-	}	//	function VARP()

-

-

-	/**

-	 * VARPA

-	 *

-	 * Calculates variance based on the entire population, including numbers, text, and logical values

-	 *

-	 * Excel Function:

-	 *		VARPA(value1[,value2[, ...]])

-	 *

-	 * @access	public

-	 * @category Statistical Functions

-	 * @param	mixed		$arg,...		Data values

-	 * @return	float

-	 */

-	public static function VARPA() {

-		// Return value

-		$returnValue = PHPExcel_Calculation_Functions::DIV0();

-

-		$summerA = $summerB = 0;

-

-		// Loop through arguments

-		$aArgs = PHPExcel_Calculation_Functions::flattenArrayIndexed(func_get_args());

-		$aCount = 0;

-		foreach ($aArgs as $k => $arg) {

-			if ((is_string($arg)) &&

-				(PHPExcel_Calculation_Functions::isValue($k))) {

-				return PHPExcel_Calculation_Functions::VALUE();

-			} elseif ((is_string($arg)) &&

-				(!PHPExcel_Calculation_Functions::isMatrixValue($k))) {

-			} else {

-				// Is it a numeric value?

-				if ((is_numeric($arg)) || (is_bool($arg)) || ((is_string($arg) & ($arg != '')))) {

-					if (is_bool($arg)) {

-						$arg = (integer) $arg;

-					} elseif (is_string($arg)) {

-						$arg = 0;

-					}

-					$summerA += ($arg * $arg);

-					$summerB += $arg;

-					++$aCount;

-				}

-			}

-		}

-

-		// Return

-		if ($aCount > 0) {

-			$summerA *= $aCount;

-			$summerB *= $summerB;

-			$returnValue = ($summerA - $summerB) / ($aCount * $aCount);

-		}

-		return $returnValue;

-	}	//	function VARPA()

-

-

-	/**

-	 * WEIBULL

-	 *

-	 * Returns the Weibull distribution. Use this distribution in reliability

-	 * analysis, such as calculating a device's mean time to failure.

-	 *

-	 * @param	float		$value

-	 * @param	float		$alpha		Alpha Parameter

-	 * @param	float		$beta		Beta Parameter

-	 * @param	boolean		$cumulative

-	 * @return	float

-	 *

-	 */

-	public static function WEIBULL($value, $alpha, $beta, $cumulative) {

-		$value	= PHPExcel_Calculation_Functions::flattenSingleValue($value);

-		$alpha	= PHPExcel_Calculation_Functions::flattenSingleValue($alpha);

-		$beta	= PHPExcel_Calculation_Functions::flattenSingleValue($beta);

-

-		if ((is_numeric($value)) && (is_numeric($alpha)) && (is_numeric($beta))) {

-			if (($value < 0) || ($alpha <= 0) || ($beta <= 0)) {

-				return PHPExcel_Calculation_Functions::NaN();

-			}

-			if ((is_numeric($cumulative)) || (is_bool($cumulative))) {

-				if ($cumulative) {

-					return 1 - exp(0 - pow($value / $beta,$alpha));

-				} else {

-					return ($alpha / pow($beta,$alpha)) * pow($value,$alpha - 1) * exp(0 - pow($value / $beta,$alpha));

-				}

-			}

-		}

-		return PHPExcel_Calculation_Functions::VALUE();

-	}	//	function WEIBULL()

-

-

-	/**

-	 * ZTEST

-	 *

-	 * Returns the Weibull distribution. Use this distribution in reliability

-	 * analysis, such as calculating a device's mean time to failure.

-	 *

-	 * @param	float		$value

-	 * @param	float		$alpha		Alpha Parameter

-	 * @param	float		$beta		Beta Parameter

-	 * @param	boolean		$cumulative

-	 * @return	float

-	 *

-	 */

-	public static function ZTEST($dataSet, $m0, $sigma=null) {

-		$dataSet	= PHPExcel_Calculation_Functions::flattenArrayIndexed($dataSet);

-		$m0			= PHPExcel_Calculation_Functions::flattenSingleValue($m0);

-		$sigma		= PHPExcel_Calculation_Functions::flattenSingleValue($sigma);

-

-		if (is_null($sigma)) {

-			$sigma = self::STDEV($dataSet);

-		}

-		$n = count($dataSet);

-

-		return 1 - self::NORMSDIST((self::AVERAGE($dataSet) - $m0)/($sigma/SQRT($n)));

-	}	//	function ZTEST()

-

-}	//	class PHPExcel_Calculation_Statistical

diff --git a/admin/survey/excel/PHPExcel/Calculation/TextData.php b/admin/survey/excel/PHPExcel/Calculation/TextData.php
deleted file mode 100644
index 9baa8ef..0000000
--- a/admin/survey/excel/PHPExcel/Calculation/TextData.php
+++ /dev/null
@@ -1,598 +0,0 @@
-<?php

-/**

- * PHPExcel

- *

- * Copyright (c) 2006 - 2012 PHPExcel

- *

- * This library is free software; you can redistribute it and/or

- * modify it under the terms of the GNU Lesser General Public

- * License as published by the Free Software Foundation; either

- * version 2.1 of the License, or (at your option) any later version.

- *

- * This library is distributed in the hope that it will be useful,

- * but WITHOUT ANY WARRANTY; without even the implied warranty of

- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU

- * Lesser General Public License for more details.

- *

- * You should have received a copy of the GNU Lesser General Public

- * License along with this library; if not, write to the Free Software

- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA

- *

- * @category	PHPExcel

- * @package		PHPExcel_Calculation

- * @copyright	Copyright (c) 2006 - 2012 PHPExcel (http://www.codeplex.com/PHPExcel)

- * @license		http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL

- * @version		1.7.8, 2012-10-12

- */

-

-

-/** PHPExcel root directory */

-if (!defined('PHPEXCEL_ROOT')) {

-	/**

-	 * @ignore

-	 */

-	define('PHPEXCEL_ROOT', dirname(__FILE__) . '/../../');

-	require(PHPEXCEL_ROOT . 'PHPExcel/Autoloader.php');

-}

-

-

-/**

- * PHPExcel_Calculation_TextData

- *

- * @category	PHPExcel

- * @package		PHPExcel_Calculation

- * @copyright	Copyright (c) 2006 - 2012 PHPExcel (http://www.codeplex.com/PHPExcel)

- */

-class PHPExcel_Calculation_TextData {

-

-	private static $_invalidChars = Null;

-

-	private static function _uniord($c) {

-		if (ord($c{0}) >=0 && ord($c{0}) <= 127)

-			return ord($c{0});

-		if (ord($c{0}) >= 192 && ord($c{0}) <= 223)

-			return (ord($c{0})-192)*64 + (ord($c{1})-128);

-		if (ord($c{0}) >= 224 && ord($c{0}) <= 239)

-			return (ord($c{0})-224)*4096 + (ord($c{1})-128)*64 + (ord($c{2})-128);

-		if (ord($c{0}) >= 240 && ord($c{0}) <= 247)

-			return (ord($c{0})-240)*262144 + (ord($c{1})-128)*4096 + (ord($c{2})-128)*64 + (ord($c{3})-128);

-		if (ord($c{0}) >= 248 && ord($c{0}) <= 251)

-			return (ord($c{0})-248)*16777216 + (ord($c{1})-128)*262144 + (ord($c{2})-128)*4096 + (ord($c{3})-128)*64 + (ord($c{4})-128);

-		if (ord($c{0}) >= 252 && ord($c{0}) <= 253)

-			return (ord($c{0})-252)*1073741824 + (ord($c{1})-128)*16777216 + (ord($c{2})-128)*262144 + (ord($c{3})-128)*4096 + (ord($c{4})-128)*64 + (ord($c{5})-128);

-		if (ord($c{0}) >= 254 && ord($c{0}) <= 255) //error

-			return PHPExcel_Calculation_Functions::VALUE();

-		return 0;

-	}	//	function _uniord()

-

-	/**

-	 * CHARACTER

-	 *

-	 * @param	string	$character	Value

-	 * @return	int

-	 */

-	public static function CHARACTER($character) {

-		$character	= PHPExcel_Calculation_Functions::flattenSingleValue($character);

-

-		if ((!is_numeric($character)) || ($character < 0)) {

-			return PHPExcel_Calculation_Functions::VALUE();

-		}

-

-		if (function_exists('mb_convert_encoding')) {

-			return mb_convert_encoding('&#'.intval($character).';', 'UTF-8', 'HTML-ENTITIES');

-		} else {

-			return chr(intval($character));

-		}

-	}

-

-

-	/**

-	 * TRIMNONPRINTABLE

-	 *

-	 * @param	mixed	$value	Value to check

-	 * @return	string

-	 */

-	public static function TRIMNONPRINTABLE($stringValue = '') {

-		$stringValue	= PHPExcel_Calculation_Functions::flattenSingleValue($stringValue);

-

-		if (is_bool($stringValue)) {

-			return ($stringValue) ? PHPExcel_Calculation::getTRUE() : PHPExcel_Calculation::getFALSE();

-		}

-

-		if (self::$_invalidChars == Null) {

-			self::$_invalidChars = range(chr(0),chr(31));

-		}

-

-		if (is_string($stringValue) || is_numeric($stringValue)) {

-			return str_replace(self::$_invalidChars,'',trim($stringValue,"\x00..\x1F"));

-		}

-		return NULL;

-	}	//	function TRIMNONPRINTABLE()

-

-

-	/**

-	 * TRIMSPACES

-	 *

-	 * @param	mixed	$value	Value to check

-	 * @return	string

-	 */

-	public static function TRIMSPACES($stringValue = '') {

-		$stringValue	= PHPExcel_Calculation_Functions::flattenSingleValue($stringValue);

-

-		if (is_bool($stringValue)) {

-			return ($stringValue) ? PHPExcel_Calculation::getTRUE() : PHPExcel_Calculation::getFALSE();

-		}

-

-		if (is_string($stringValue) || is_numeric($stringValue)) {

-			return trim(preg_replace('/ +/',' ',trim($stringValue,' ')));

-		}

-		return NULL;

-	}	//	function TRIMSPACES()

-

-

-	/**

-	 * ASCIICODE

-	 *

-	 * @param	string	$character	Value

-	 * @return	int

-	 */

-	public static function ASCIICODE($characters) {

-		if (($characters === NULL) || ($characters === ''))

-			return PHPExcel_Calculation_Functions::VALUE();

-		$characters	= PHPExcel_Calculation_Functions::flattenSingleValue($characters);

-		if (is_bool($characters)) {

-			if (PHPExcel_Calculation_Functions::getCompatibilityMode() == PHPExcel_Calculation_Functions::COMPATIBILITY_OPENOFFICE) {

-				$characters = (int) $characters;

-			} else {

-				$characters = ($characters) ? PHPExcel_Calculation::getTRUE() : PHPExcel_Calculation::getFALSE();

-			}

-		}

-

-		$character = $characters;

-		if ((function_exists('mb_strlen')) && (function_exists('mb_substr'))) {

-			if (mb_strlen($characters, 'UTF-8') > 1) { $character = mb_substr($characters, 0, 1, 'UTF-8'); }

-			return self::_uniord($character);

-		} else {

-			if (strlen($characters) > 0) { $character = substr($characters, 0, 1); }

-			return ord($character);

-		}

-	}	//	function ASCIICODE()

-

-

-	/**

-	 * CONCATENATE

-	 *

-	 * @return	string

-	 */

-	public static function CONCATENATE() {

-		// Return value

-		$returnValue = '';

-

-		// Loop through arguments

-		$aArgs = PHPExcel_Calculation_Functions::flattenArray(func_get_args());

-		foreach ($aArgs as $arg) {

-			if (is_bool($arg)) {

-				if (PHPExcel_Calculation_Functions::getCompatibilityMode() == PHPExcel_Calculation_Functions::COMPATIBILITY_OPENOFFICE) {

-					$arg = (int) $arg;

-				} else {

-					$arg = ($arg) ? PHPExcel_Calculation::getTRUE() : PHPExcel_Calculation::getFALSE();

-				}

-			}

-			$returnValue .= $arg;

-		}

-

-		// Return

-		return $returnValue;

-	}	//	function CONCATENATE()

-

-

-	/**

-	 * DOLLAR

-	 *

-	 * This function converts a number to text using currency format, with the decimals rounded to the specified place.

-	 * The format used is $#,##0.00_);($#,##0.00)..

-	 *

-	 * @param	float	$value			The value to format

-	 * @param	int		$decimals		The number of digits to display to the right of the decimal point.

-	 *									If decimals is negative, number is rounded to the left of the decimal point.

-	 *									If you omit decimals, it is assumed to be 2

-	 * @return	string

-	 */

-	public static function DOLLAR($value = 0, $decimals = 2) {

-		$value		= PHPExcel_Calculation_Functions::flattenSingleValue($value);

-		$decimals	= is_null($decimals) ? 0 : PHPExcel_Calculation_Functions::flattenSingleValue($decimals);

-

-		// Validate parameters

-		if (!is_numeric($value) || !is_numeric($decimals)) {

-			return PHPExcel_Calculation_Functions::NaN();

-		}

-		$decimals = floor($decimals);

-

-		if ($decimals > 0) {

-			return money_format('%.'.$decimals.'n',$value);

-		} else {

-			$round = pow(10,abs($decimals));

-			if ($value < 0) { $round = 0-$round; }

-			$value = PHPExcel_Calculation_MathTrig::MROUND($value,$round);

-			//	The implementation of money_format used if the standard PHP function is not available can't handle decimal places of 0,

-			//		so we display to 1 dp and chop off that character and the decimal separator using substr

-			return substr(money_format('%.1n',$value),0,-2);

-		}

-	}	//	function DOLLAR()

-

-

-	/**

-	 * SEARCHSENSITIVE

-	 *

-	 * @param	string	$needle		The string to look for

-	 * @param	string	$haystack	The string in which to look

-	 * @param	int		$offset		Offset within $haystack

-	 * @return	string

-	 */

-	public static function SEARCHSENSITIVE($needle,$haystack,$offset=1) {

-		$needle		= PHPExcel_Calculation_Functions::flattenSingleValue($needle);

-		$haystack	= PHPExcel_Calculation_Functions::flattenSingleValue($haystack);

-		$offset		= PHPExcel_Calculation_Functions::flattenSingleValue($offset);

-

-		if (!is_bool($needle)) {

-			if (is_bool($haystack)) {

-				$haystack = ($haystack) ? PHPExcel_Calculation::getTRUE() : PHPExcel_Calculation::getFALSE();

-			}

-

-			if (($offset > 0) && (PHPExcel_Shared_String::CountCharacters($haystack) > $offset)) {

-				if (PHPExcel_Shared_String::CountCharacters($needle) == 0) {

-					return $offset;

-				}

-				if (function_exists('mb_strpos')) {

-					$pos = mb_strpos($haystack, $needle, --$offset, 'UTF-8');

-				} else {

-					$pos = strpos($haystack, $needle, --$offset);

-				}

-				if ($pos !== false) {

-					return ++$pos;

-				}

-			}

-		}

-		return PHPExcel_Calculation_Functions::VALUE();

-	}	//	function SEARCHSENSITIVE()

-

-

-	/**

-	 * SEARCHINSENSITIVE

-	 *

-	 * @param	string	$needle		The string to look for

-	 * @param	string	$haystack	The string in which to look

-	 * @param	int		$offset		Offset within $haystack

-	 * @return	string

-	 */

-	public static function SEARCHINSENSITIVE($needle,$haystack,$offset=1) {

-		$needle		= PHPExcel_Calculation_Functions::flattenSingleValue($needle);

-		$haystack	= PHPExcel_Calculation_Functions::flattenSingleValue($haystack);

-		$offset		= PHPExcel_Calculation_Functions::flattenSingleValue($offset);

-

-		if (!is_bool($needle)) {

-			if (is_bool($haystack)) {

-				$haystack = ($haystack) ? PHPExcel_Calculation::getTRUE() : PHPExcel_Calculation::getFALSE();

-			}

-

-			if (($offset > 0) && (PHPExcel_Shared_String::CountCharacters($haystack) > $offset)) {

-				if (PHPExcel_Shared_String::CountCharacters($needle) == 0) {

-					return $offset;

-				}

-				if (function_exists('mb_stripos')) {

-					$pos = mb_stripos($haystack, $needle, --$offset,'UTF-8');

-				} else {

-					$pos = stripos($haystack, $needle, --$offset);

-				}

-				if ($pos !== false) {

-					return ++$pos;

-				}

-			}

-		}

-		return PHPExcel_Calculation_Functions::VALUE();

-	}	//	function SEARCHINSENSITIVE()

-

-

-	/**

-	 * FIXEDFORMAT

-	 *

-	 * @param	mixed	$value	Value to check

-	 * @return	boolean

-	 */

-	public static function FIXEDFORMAT($value, $decimals = 2, $no_commas = FALSE) {

-		$value		= PHPExcel_Calculation_Functions::flattenSingleValue($value);

-		$decimals	= PHPExcel_Calculation_Functions::flattenSingleValue($decimals);

-		$no_commas	= PHPExcel_Calculation_Functions::flattenSingleValue($no_commas);

-

-		// Validate parameters

-		if (!is_numeric($value) || !is_numeric($decimals)) {

-			return PHPExcel_Calculation_Functions::NaN();

-		}

-		$decimals = floor($decimals);

-

-		$valueResult = round($value,$decimals);

-		if ($decimals < 0) { $decimals = 0; }

-		if (!$no_commas) {

-			$valueResult = number_format($valueResult,$decimals);

-		}

-

-		return (string) $valueResult;

-	}	//	function FIXEDFORMAT()

-

-

-	/**

-	 * LEFT

-	 *

-	 * @param	string	$value	Value

-	 * @param	int		$chars	Number of characters

-	 * @return	string

-	 */

-	public static function LEFT($value = '', $chars = 1) {

-		$value		= PHPExcel_Calculation_Functions::flattenSingleValue($value);

-		$chars		= PHPExcel_Calculation_Functions::flattenSingleValue($chars);

-

-		if ($chars < 0) {

-			return PHPExcel_Calculation_Functions::VALUE();

-		}

-

-		if (is_bool($value)) {

-			$value = ($value) ? PHPExcel_Calculation::getTRUE() : PHPExcel_Calculation::getFALSE();

-		}

-

-		if (function_exists('mb_substr')) {

-			return mb_substr($value, 0, $chars, 'UTF-8');

-		} else {

-			return substr($value, 0, $chars);

-		}

-	}	//	function LEFT()

-

-

-	/**

-	 * MID

-	 *

-	 * @param	string	$value	Value

-	 * @param	int		$start	Start character

-	 * @param	int		$chars	Number of characters

-	 * @return	string

-	 */

-	public static function MID($value = '', $start = 1, $chars = null) {

-		$value		= PHPExcel_Calculation_Functions::flattenSingleValue($value);

-		$start		= PHPExcel_Calculation_Functions::flattenSingleValue($start);

-		$chars		= PHPExcel_Calculation_Functions::flattenSingleValue($chars);

-

-		if (($start < 1) || ($chars < 0)) {

-			return PHPExcel_Calculation_Functions::VALUE();

-		}

-

-		if (is_bool($value)) {

-			$value = ($value) ? PHPExcel_Calculation::getTRUE() : PHPExcel_Calculation::getFALSE();

-		}

-

-		if (function_exists('mb_substr')) {

-			return mb_substr($value, --$start, $chars, 'UTF-8');

-		} else {

-			return substr($value, --$start, $chars);

-		}

-	}	//	function MID()

-

-

-	/**

-	 * RIGHT

-	 *

-	 * @param	string	$value	Value

-	 * @param	int		$chars	Number of characters

-	 * @return	string

-	 */

-	public static function RIGHT($value = '', $chars = 1) {

-		$value		= PHPExcel_Calculation_Functions::flattenSingleValue($value);

-		$chars		= PHPExcel_Calculation_Functions::flattenSingleValue($chars);

-

-		if ($chars < 0) {

-			return PHPExcel_Calculation_Functions::VALUE();

-		}

-

-		if (is_bool($value)) {

-			$value = ($value) ? PHPExcel_Calculation::getTRUE() : PHPExcel_Calculation::getFALSE();

-		}

-

-		if ((function_exists('mb_substr')) && (function_exists('mb_strlen'))) {

-			return mb_substr($value, mb_strlen($value, 'UTF-8') - $chars, $chars, 'UTF-8');

-		} else {

-			return substr($value, strlen($value) - $chars);

-		}

-	}	//	function RIGHT()

-

-

-	/**

-	 * STRINGLENGTH

-	 *

-	 * @param	string	$value	Value

-	 * @param	int		$chars	Number of characters

-	 * @return	string

-	 */

-	public static function STRINGLENGTH($value = '') {

-		$value		= PHPExcel_Calculation_Functions::flattenSingleValue($value);

-

-		if (is_bool($value)) {

-			$value = ($value) ? PHPExcel_Calculation::getTRUE() : PHPExcel_Calculation::getFALSE();

-		}

-

-		if (function_exists('mb_strlen')) {

-			return mb_strlen($value, 'UTF-8');

-		} else {

-			return strlen($value);

-		}

-	}	//	function STRINGLENGTH()

-

-

-	/**

-	 * LOWERCASE

-	 *

-	 * Converts a string value to upper case.

-	 *

-	 * @param	string		$mixedCaseString

-	 * @return	string

-	 */

-	public static function LOWERCASE($mixedCaseString) {

-		$mixedCaseString	= PHPExcel_Calculation_Functions::flattenSingleValue($mixedCaseString);

-

-		if (is_bool($mixedCaseString)) {

-			$mixedCaseString = ($mixedCaseString) ? PHPExcel_Calculation::getTRUE() : PHPExcel_Calculation::getFALSE();

-		}

-

-		if (function_exists('mb_convert_case')) {

-			return mb_convert_case($mixedCaseString, MB_CASE_LOWER, 'UTF-8');

-		} else {

-			return strtoupper($mixedCaseString);

-		}

-	}	//	function LOWERCASE()

-

-

-	/**

-	 * UPPERCASE

-	 *

-	 * Converts a string value to upper case.

-	 *

-	 * @param	string		$mixedCaseString

-	 * @return	string

-	 */

-	public static function UPPERCASE($mixedCaseString) {

-		$mixedCaseString	= PHPExcel_Calculation_Functions::flattenSingleValue($mixedCaseString);

-

-		if (is_bool($mixedCaseString)) {

-			$mixedCaseString = ($mixedCaseString) ? PHPExcel_Calculation::getTRUE() : PHPExcel_Calculation::getFALSE();

-		}

-

-		if (function_exists('mb_convert_case')) {

-			return mb_convert_case($mixedCaseString, MB_CASE_UPPER, 'UTF-8');

-		} else {

-			return strtoupper($mixedCaseString);

-		}

-	}	//	function UPPERCASE()

-

-

-	/**

-	 * PROPERCASE

-	 *

-	 * Converts a string value to upper case.

-	 *

-	 * @param	string		$mixedCaseString

-	 * @return	string

-	 */

-	public static function PROPERCASE($mixedCaseString) {

-		$mixedCaseString	= PHPExcel_Calculation_Functions::flattenSingleValue($mixedCaseString);

-

-		if (is_bool($mixedCaseString)) {

-			$mixedCaseString = ($mixedCaseString) ? PHPExcel_Calculation::getTRUE() : PHPExcel_Calculation::getFALSE();

-		}

-

-		if (function_exists('mb_convert_case')) {

-			return mb_convert_case($mixedCaseString, MB_CASE_TITLE, 'UTF-8');

-		} else {

-			return ucwords($mixedCaseString);

-		}

-	}	//	function PROPERCASE()

-

-

-	/**

-	 * REPLACE

-	 *

-	 * @param	string	$value	Value

-	 * @param	int		$start	Start character

-	 * @param	int		$chars	Number of characters

-	 * @return	string

-	 */

-	public static function REPLACE($oldText = '', $start = 1, $chars = null, $newText) {

-		$oldText	= PHPExcel_Calculation_Functions::flattenSingleValue($oldText);

-		$start		= PHPExcel_Calculation_Functions::flattenSingleValue($start);

-		$chars		= PHPExcel_Calculation_Functions::flattenSingleValue($chars);

-		$newText	= PHPExcel_Calculation_Functions::flattenSingleValue($newText);

-

-		$left = self::LEFT($oldText,$start-1);

-		$right = self::RIGHT($oldText,self::STRINGLENGTH($oldText)-($start+$chars)+1);

-

-		return $left.$newText.$right;

-	}	//	function REPLACE()

-

-

-	/**

-	 * SUBSTITUTE

-	 *

-	 * @param	string	$text		Value

-	 * @param	string	$fromText	From Value

-	 * @param	string	$toText		To Value

-	 * @param	integer	$instance	Instance Number

-	 * @return	string

-	 */

-	public static function SUBSTITUTE($text = '', $fromText = '', $toText = '', $instance = 0) {

-		$text		= PHPExcel_Calculation_Functions::flattenSingleValue($text);

-		$fromText	= PHPExcel_Calculation_Functions::flattenSingleValue($fromText);

-		$toText		= PHPExcel_Calculation_Functions::flattenSingleValue($toText);

-		$instance	= floor(PHPExcel_Calculation_Functions::flattenSingleValue($instance));

-

-		if ($instance == 0) {

-			if(function_exists('mb_str_replace')) {

-				return mb_str_replace($fromText,$toText,$text);

-			} else {

-				return str_replace($fromText,$toText,$text);

-			}

-		} else {

-			$pos = -1;

-			while($instance > 0) {

-				if (function_exists('mb_strpos')) {

-					$pos = mb_strpos($text, $fromText, $pos+1, 'UTF-8');

-				} else {

-					$pos = strpos($text, $fromText, $pos+1);

-				}

-				if ($pos === false) {

-					break;

-				}

-				--$instance;

-			}

-			if ($pos !== false) {

-				if (function_exists('mb_strlen')) {

-					return self::REPLACE($text,++$pos,mb_strlen($fromText, 'UTF-8'),$toText);

-				} else {

-					return self::REPLACE($text,++$pos,strlen($fromText),$toText);

-				}

-			}

-		}

-

-		return $text;

-	}	//	function SUBSTITUTE()

-

-

-	/**

-	 * RETURNSTRING

-	 *

-	 * @param	mixed	$value	Value to check

-	 * @return	boolean

-	 */

-	public static function RETURNSTRING($testValue = '') {

-		$testValue	= PHPExcel_Calculation_Functions::flattenSingleValue($testValue);

-

-		if (is_string($testValue)) {

-			return $testValue;

-		}

-		return Null;

-	}	//	function RETURNSTRING()

-

-

-	/**

-	 * TEXTFORMAT

-	 *

-	 * @param	mixed	$value	Value to check

-	 * @return	boolean

-	 */

-	public static function TEXTFORMAT($value,$format) {

-		$value	= PHPExcel_Calculation_Functions::flattenSingleValue($value);

-		$format	= PHPExcel_Calculation_Functions::flattenSingleValue($format);

-

-		if ((is_string($value)) && (!is_numeric($value)) && PHPExcel_Shared_Date::isDateTimeFormatCode($format)) {

-			$value = PHPExcel_Calculation_DateTime::DATEVALUE($value);

-		}

-

-		return (string) PHPExcel_Style_NumberFormat::toFormattedString($value,$format);

-	}	//	function TEXTFORMAT()

-

-}	//	class PHPExcel_Calculation_TextData

diff --git a/admin/survey/excel/PHPExcel/Calculation/Token/Stack.php b/admin/survey/excel/PHPExcel/Calculation/Token/Stack.php
deleted file mode 100644
index bd79c48..0000000
--- a/admin/survey/excel/PHPExcel/Calculation/Token/Stack.php
+++ /dev/null
@@ -1,73 +0,0 @@
-<?php

-/**

- * PHPExcel

- *

- * Copyright (c) 2006 - 2012 PHPExcel

- *

- * This library is free software; you can redistribute it and/or

- * modify it under the terms of the GNU Lesser General Public

- * License as published by the Free Software Foundation; either

- * version 2.1 of the License, or (at your option) any later version.

- *

- * This library is distributed in the hope that it will be useful,

- * but WITHOUT ANY WARRANTY; without even the implied warranty of

- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

- * Lesser General Public License for more details.

- *

- * You should have received a copy of the GNU Lesser General Public

- * License along with this library; if not, write to the Free Software

- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA

- *

- * @category   PHPExcel

- * @package    PHPExcel_Calculation

- * @copyright  Copyright (c) 2006 - 2012 PHPExcel (http://www.codeplex.com/PHPExcel)

- * @license	http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL

- * @version	1.7.8, 2012-10-12

- */

-

-

-class PHPExcel_Calculation_Token_Stack {

-

-	private $_stack = array();

-	private $_count = 0;

-

-

-	public function count() {

-		return $this->_count;

-	}	//	function count()

-

-

-	public function push($type,$value,$reference=null) {

-		$this->_stack[$this->_count++] = array('type'		=> $type,

-											   'value'		=> $value,

-											   'reference'	=> $reference

-											  );

-		if ($type == 'Function') {

-			$localeFunction = PHPExcel_Calculation::_localeFunc($value);

-			if ($localeFunction != $value) {

-				$this->_stack[($this->_count - 1)]['localeValue'] = $localeFunction;

-			}

-		}

-	}	//	function push()

-

-

-	public function pop() {

-		if ($this->_count > 0) {

-			return $this->_stack[--$this->_count];

-		}

-		return null;

-	}	//	function pop()

-

-

-	public function last($n=1) {

-		if ($this->_count-$n < 0) {

-			return null;

-		}

-		return $this->_stack[$this->_count-$n];

-	}	//	function last()

-

-

-	function __construct() {

-	}

-

-}	//	class PHPExcel_Calculation_Token_Stack

diff --git a/admin/survey/excel/PHPExcel/Calculation/functionlist.txt b/admin/survey/excel/PHPExcel/Calculation/functionlist.txt
deleted file mode 100644
index e90a2f8..0000000
--- a/admin/survey/excel/PHPExcel/Calculation/functionlist.txt
+++ /dev/null
@@ -1,351 +0,0 @@
-ABS

-ACCRINT

-ACCRINTM

-ACOS

-ACOSH

-ADDRESS

-AMORDEGRC

-AMORLINC

-AND

-AREAS

-ASC

-ASIN

-ASINH

-ATAN

-ATAN2

-ATANH

-AVEDEV

-AVERAGE

-AVERAGEA

-AVERAGEIF

-AVERAGEIFS

-BAHTTEXT

-BESSELI

-BESSELJ

-BESSELK

-BESSELY

-BETADIST

-BETAINV

-BIN2DEC

-BIN2HEX

-BIN2OCT

-BINOMDIST

-CEILING

-CELL

-CHAR

-CHIDIST

-CHIINV

-CHITEST

-CHOOSE

-CLEAN

-CODE

-COLUMN

-COLUMNS

-COMBIN

-COMPLEX

-CONCATENATE

-CONFIDENCE

-CONVERT

-CORREL

-COS

-COSH

-COUNT

-COUNTA

-COUNTBLANK

-COUNTIF

-COUNTIFS

-COUPDAYBS

-COUPDAYBS

-COUPDAYSNC

-COUPNCD

-COUPNUM

-COUPPCD

-COVAR

-CRITBINOM

-CUBEKPIMEMBER

-CUBEMEMBER

-CUBEMEMBERPROPERTY

-CUBERANKEDMEMBER

-CUBESET

-CUBESETCOUNT

-CUBEVALUE

-CUMIPMT

-CUMPRINC

-DATE

-DATEDIF

-DATEVALUE

-DAVERAGE

-DAY

-DAYS360

-DB

-DCOUNT

-DCOUNTA

-DDB

-DEC2BIN

-DEC2HEX

-DEC2OCT

-DEGREES

-DELTA

-DEVSQ

-DGET

-DISC

-DMAX

-DMIN

-DOLLAR

-DOLLARDE

-DOLLARFR

-DPRODUCT

-DSTDEV

-DSTDEVP

-DSUM

-DURATION

-DVAR

-DVARP

-EDATE

-EFFECT

-EOMONTH

-ERF

-ERFC

-ERROR.TYPE

-EVEN

-EXACT

-EXP

-EXPONDIST

-FACT

-FACTDOUBLE

-FALSE

-FDIST

-FIND

-FINDB

-FINV

-FISHER

-FISHERINV

-FIXED

-FLOOR

-FORECAST

-FREQUENCY

-FTEST

-FV

-FVSCHEDULE

-GAMAMDIST

-GAMMAINV

-GAMMALN

-GCD

-GEOMEAN

-GESTEP

-GETPIVOTDATA

-GROWTH

-HARMEAN

-HEX2BIN

-HEX2OCT

-HLOOKUP

-HOUR

-HYPERLINK

-HYPGEOMDIST

-IF

-IFERROR

-IMABS

-IMAGINARY

-IMARGUMENT

-IMCONJUGATE

-IMCOS

-IMEXP

-IMLN

-IMLOG10

-IMLOG2

-IMPOWER

-IMPRODUCT

-IMREAL

-IMSIN

-IMSQRT

-IMSUB

-IMSUM

-INDEX

-INDIRECT

-INFO

-INT

-INTERCEPT

-INTRATE

-IPMT

-IRR

-ISBLANK

-ISERR

-ISERROR

-ISEVEN

-ISLOGICAL

-ISNA

-ISNONTEXT

-ISNUMBER

-ISODD

-ISPMT

-ISREF

-ISTEXT

-JIS

-KURT

-LARGE

-LCM

-LEFT

-LEFTB

-LEN

-LENB

-LINEST

-LN

-LOG

-LOG10

-LOGEST

-LOGINV

-LOGNORMDIST

-LOOKUP

-LOWER

-MATCH

-MAX

-MAXA

-MDETERM

-MDURATION

-MEDIAN

-MID

-MIDB

-MIN

-MINA

-MINUTE

-MINVERSE

-MIRR

-MMULT

-MOD

-MODE

-MONTH

-MROUND

-MULTINOMIAL

-N

-NA

-NEGBINOMDIST

-NETWORKDAYS

-NOMINAL

-NORMDIST

-NORMINV

-NORMSDIST

-NORMSINV

-NOT

-NOW

-NPER

-NPV

-OCT2BIN

-OCT2DEC

-OCT2HEX

-ODD

-ODDFPRICE

-ODDFYIELD

-ODDLPRICE

-ODDLYIELD

-OFFSET

-OR

-PEARSON

-PERCENTILE

-PERCENTRANK

-PERMUT

-PHONETIC

-PI

-PMT

-POISSON

-POWER

-PPMT

-PRICE

-PRICEDISC

-PRICEMAT

-PROB

-PRODUCT

-PROPER

-PV

-QUARTILE

-QUOTIENT

-RADIANS

-RAND

-RANDBETWEEN

-RANK

-RATE

-RECEIVED

-REPLACE

-REPLACEB

-REPT

-RIGHT

-RIGHTB

-ROMAN

-ROUND

-ROUNDDOWN

-ROUNDUP

-ROW

-ROWS

-RSQ

-RTD

-SEARCH

-SEARCHB

-SECOND

-SERIESSUM

-SIGN

-SIN

-SINH

-SKEW

-SLN

-SLOPE

-SMALL

-SQRT

-SQRTPI

-STANDARDIZE

-STDEV

-STDEVA

-STDEVP

-STDEVPA

-STEYX

-SUBSTITUTE

-SUBTOTAL

-SUM

-SUMIF

-SUMIFS

-SUMPRODUCT

-SUMSQ

-SUMX2MY2

-SUMX2PY2

-SUMXMY2

-SYD

-T

-TAN

-TANH

-TBILLEQ

-TBILLPRICE

-TBILLYIELD

-TDIST

-TEXT

-TIME

-TIMEVALUE

-TINV

-TODAY

-TRANSPOSE

-TREND

-TRIM

-TRIMMEAN

-TRUE

-TRUNC

-TTEST

-TYPE

-UPPER

-USDOLLAR

-VALUE

-VAR

-VARA

-VARP

-VARPA

-VDB

-VERSION

-VLOOKUP

-WEEKDAY

-WEEKNUM

-WEIBULL

-WORKDAY

-XIRR

-XNPV

-YEAR

-YEARFRAC

-YIELD

-YIELDDISC

-YIELDMAT

-ZTEST