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authorAnton Luka Šijanec <anton@sijanec.eu>2024-05-27 13:08:29 +0200
committerAnton Luka Šijanec <anton@sijanec.eu>2024-05-27 13:08:29 +0200
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+<?php
+
+/**
+ *
+ * Function code for the complex acot() function
+ *
+ * @copyright Copyright (c) 2013-2018 Mark Baker (https://github.com/MarkBaker/PHPComplex)
+ * @license https://opensource.org/licenses/MIT MIT
+ */
+namespace Complex;
+
+/**
+ * Returns the inverse cotangent of a complex number.
+ *
+ * @param Complex|mixed $complex Complex number or a numeric value.
+ * @return Complex The inverse cotangent of the complex argument.
+ * @throws Exception If argument isn't a valid real or complex number.
+ * @throws \InvalidArgumentException If function would result in a division by zero
+ */
+if (!function_exists(__NAMESPACE__ . '\\acot')) {
+ function acot($complex): Complex
+ {
+ $complex = Complex::validateComplexArgument($complex);
+
+ return atan(inverse($complex));
+ }
+}