1 files changed, 48 insertions, 0 deletions
diff --git a/vendor/markbaker/complex/classes/src/operations/subtract.php b/vendor/markbaker/complex/classes/src/operations/subtract.php
new file mode 100644
index 0000000..79427b5
--- /dev/null
+++ b/vendor/markbaker/complex/classes/src/operations/subtract.php
@@ -0,0 +1,48 @@
+<?php
+
+/**
+ *
+ * Function code for the complex subtraction operation
+ *
+ * @copyright  Copyright (c) 2013-2018 Mark Baker (https://github.com/MarkBaker/PHPComplex)
+ * @license    https://opensource.org/licenses/MIT    MIT
+ */
+namespace Complex;
+
+/**
+ * Subtracts two or more complex numbers
+ *
+ * @param     array of string|integer|float|Complex    $complexValues   The numbers to subtract
+ * @return    Complex
+ */
+if (!function_exists(__NAMESPACE__ . '\\subtract')) {
+    function subtract(...$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');
+            }
+
+            $real = $result->getReal() - $complex->getReal();
+            $imaginary = $result->getImaginary() - $complex->getImaginary();
+
+            $result = new Complex(
+                $real,
+                $imaginary,
+                ($imaginary == 0.0) ? null : max($result->getSuffix(), $complex->getSuffix())
+            );
+        }
+
+        return $result;
+    }
+}