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Diffstat (limited to '')
| -rw-r--r-- | vendor/markbaker/complex/classes/src/functions/rho.php | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/vendor/markbaker/complex/classes/src/functions/rho.php b/vendor/markbaker/complex/classes/src/functions/rho.php new file mode 100644 index 0000000..dfc4049 --- /dev/null +++ b/vendor/markbaker/complex/classes/src/functions/rho.php @@ -0,0 +1,30 @@ +<?php
+
+/**
+ *
+ * Function code for the complex rho() function
+ *
+ * @copyright Copyright (c) 2013-2018 Mark Baker (https://github.com/MarkBaker/PHPComplex)
+ * @license https://opensource.org/licenses/MIT MIT
+ */
+namespace Complex;
+
+/**
+ * Returns the rho of a complex number.
+ * This is the distance/radius from the centrepoint to the representation of the number in polar coordinates.
+ *
+ * @param Complex|mixed $complex Complex number or a numeric value.
+ * @return float The rho value of the complex argument.
+ * @throws Exception If argument isn't a valid real or complex number.
+ */
+if (!function_exists(__NAMESPACE__ . '\\rho')) {
+ function rho($complex): float
+ {
+ $complex = Complex::validateComplexArgument($complex);
+
+ return \sqrt(
+ ($complex->getReal() * $complex->getReal()) +
+ ($complex->getImaginary() * $complex->getImaginary())
+ );
+ }
+}
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