From 75160b12821f7f4299cce7f0b69c83c1502ae071 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Anton=20Luka=20=C5=A0ijanec?= <anton@sijanec.eu>
Date: Mon, 27 May 2024 13:08:29 +0200
Subject: 2024-02-19 upstream

---
 .../complex/classes/src/functions/sqrt.php         | 31 ++++++++++++++++++++++
 1 file changed, 31 insertions(+)
 create mode 100644 vendor/markbaker/complex/classes/src/functions/sqrt.php

(limited to 'vendor/markbaker/complex/classes/src/functions/sqrt.php')

diff --git a/vendor/markbaker/complex/classes/src/functions/sqrt.php b/vendor/markbaker/complex/classes/src/functions/sqrt.php
new file mode 100644
index 0000000..5753a86
--- /dev/null
+++ b/vendor/markbaker/complex/classes/src/functions/sqrt.php
@@ -0,0 +1,31 @@
+<?php
+
+/**
+ *
+ * Function code for the complex sqrt() function
+ *
+ * @copyright  Copyright (c) 2013-2018 Mark Baker (https://github.com/MarkBaker/PHPComplex)
+ * @license    https://opensource.org/licenses/MIT    MIT
+ */
+namespace Complex;
+
+/**
+ * Returns the square root of a complex number.
+ *
+ * @param     Complex|mixed    $complex    Complex number or a numeric value.
+ * @return    Complex          The Square root of the complex argument.
+ * @throws    Exception        If argument isn't a valid real or complex number.
+ */
+if (!function_exists(__NAMESPACE__ . '\\sqrt')) {
+    function sqrt($complex): Complex
+    {
+        $complex = Complex::validateComplexArgument($complex);
+
+        $theta = theta($complex);
+        $delta1 = \cos($theta / 2);
+        $delta2 = \sin($theta / 2);
+        $rho = \sqrt(rho($complex));
+
+        return new Complex($delta1 * $rho, $delta2 * $rho, $complex->getSuffix());
+    }
+}
-- 
cgit v1.2.3