1 files changed, 42 insertions, 0 deletions
diff --git a/vendor/markbaker/complex/classes/src/functions/pow.php b/vendor/markbaker/complex/classes/src/functions/pow.php
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+++ b/vendor/markbaker/complex/classes/src/functions/pow.php
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+<?php
+
+/**
+ *
+ * Function code for the complex pow() function
+ *
+ * @copyright  Copyright (c) 2013-2018 Mark Baker (https://github.com/MarkBaker/PHPComplex)
+ * @license    https://opensource.org/licenses/MIT    MIT
+ */
+namespace Complex;
+
+/**
+ * Returns a complex number raised to a power.
+ *
+ * @param     Complex|mixed    $complex    Complex number or a numeric value.
+ * @param     float|integer    $power      The power to raise this value to
+ * @return    Complex          The complex argument raised to the real power.
+ * @throws    Exception        If the power argument isn't a valid real
+ */
+if (!function_exists(__NAMESPACE__ . '\\pow')) {
+    function pow($complex, $power): Complex
+    {
+        $complex = Complex::validateComplexArgument($complex);
+
+        if (!is_numeric($power)) {
+            throw new Exception('Power argument must be a real number');
+        }
+
+        if ($complex->getImaginary() == 0.0 && $complex->getReal() >= 0.0) {
+            return new Complex(\pow($complex->getReal(), $power));
+        }
+
+        $rValue = \sqrt(($complex->getReal() * $complex->getReal()) + ($complex->getImaginary() * $complex->getImaginary()));
+        $rPower = \pow($rValue, $power);
+        $theta = $complex->argument() * $power;
+        if ($theta == 0) {
+            return new Complex(1);
+        }
+
+        return new Complex($rPower * \cos($theta), $rPower * \sin($theta), $complex->getSuffix());
+    }
+}