/***
*putw.c - put a binary int to output stream
*
*	Copyright (c) 1985-1991, Microsoft Corporation. All rights reserved.
*
*Purpose:
*	defines _putw() - puts a binary int to an output stream
*
*Revision History:
*	09-02-83  RN	initial version
*	11-09-87  JCR	Multi-thread support
*	12-11-87  JCR	Added "_LOAD_DS" to declaration
*	01-13-88  JCR	Removed unnecessary calls to mthread fileno/feof/ferror
*	05-27-88  PHG	Merged DLL and normal versions
*	06-15-88  JCR	Near reference to _iob[] entries; improve REG variables
*	08-25-88  GJF	Don't use FP_OFF() macro for the 386
*	08-18-89  GJF	Clean up, now specific to OS/2 2.0 (i.e., 386 flat
*			model). Also fixed copyright and indents.
*	02-15-90  GJF	Fixed copyright
*	03-19-90  GJF	Made calling type _CALLTYPE1, added #include
*			<cruntime.h> and removed #include <register.h>.
*	07-23-90  SBM	Replaced <assertm.h> by <assert.h>
*	10-03-90  GJF	New-style function declarators.
*	01-21-91  GJF	ANSI naming.
*
*******************************************************************************/

#include <cruntime.h>
#include <stdio.h>
#include <assert.h>
#include <file2.h>
#include <internal.h>
#include <os2dll.h>

/***
*int _putw(word, stream) - write a binary int to an output stream
*
*Purpose:
*	Writes sizeof(int) bytes to the output stream, high byte first.
*	This routine should be machine independent.
*
*Entry:
*	int word - integer to write
*	FILE *stream - stream to write to
*
*Exit:
*	returns the word put to the stream
*	returns EOF if error, but this is a legit int value, so should
*	test with feof() or ferror().
*
*Exceptions:
*
*******************************************************************************/

int _CALLTYPE1 _putw (
	int word,
	FILE *str
	)
{
	REG1 FILE *stream;
	REG3 int bytecount = sizeof(int);
	REG2 char *byteptr = (char *)&word;
	int retval;
#ifdef MTHREAD
	int index;
#endif

	assert(str != NULL);

	/* Init stream pointer */
	stream = str;

#ifdef MTHREAD
	index = _iob_index(stream);
#endif
	_lock_str(index);

	while (bytecount--)
	{
		_putc_lk(*byteptr,stream);
		++byteptr;
	}
	retval = (ferror(stream) ? EOF : word);

	_unlock_str(index);
	return(retval);
}