updated-packages

vendor/markbaker/complex/classes/src/operations/divideinto.php

@@ -0,0 +1,58 @@
+<?php
+
+/**
+ *
+ * Function code for the complex division operation
+ *
+ * @copyright  Copyright (c) 2013-2018 Mark Baker (https://github.com/MarkBaker/PHPComplex)
+ * @license    https://opensource.org/licenses/MIT    MIT
+ */
+namespace Complex;
+
+/**
+ * Divides two or more complex numbers
+ *
+ * @param     array of string|integer|float|Complex    $complexValues   The numbers to divide
+ * @return    Complex
+ */
+if (!function_exists(__NAMESPACE__ . '\\divideinto')) {
+    function divideinto(...$complexValues): Complex
+    {
+        if (count($complexValues) < 2) {
+            throw new \Exception('This function requires at least 2 arguments');
+        }
+
+        $base = array_shift($complexValues);
+        $result = clone Complex::validateComplexArgument($base);
+
+        foreach ($complexValues as $complex) {
+            $complex = Complex::validateComplexArgument($complex);
+
+            if ($result->isComplex() && $complex->isComplex() &&
+                $result->getSuffix() !== $complex->getSuffix()) {
+                throw new Exception('Suffix Mismatch');
+            }
+            if ($result->getReal() == 0.0 && $result->getImaginary() == 0.0) {
+                throw new \InvalidArgumentException('Division by zero');
+            }
+
+            $delta1 = ($complex->getReal() * $result->getReal()) +
+                ($complex->getImaginary() * $result->getImaginary());
+            $delta2 = ($complex->getImaginary() * $result->getReal()) -
+                ($complex->getReal() * $result->getImaginary());
+            $delta3 = ($result->getReal() * $result->getReal()) +
+                ($result->getImaginary() * $result->getImaginary());
+
+            $real = $delta1 / $delta3;
+            $imaginary = $delta2 / $delta3;
+
+            $result = new Complex(
+                $real,
+                $imaginary,
+                ($imaginary == 0.0) ? null : max($result->getSuffix(), $complex->getSuffix())
+            );
+        }
+
+        return $result;
+    }
+}