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

---
 .../matrix/classes/src/Operations/subtract.php     | 46 ++++++++++++++++++++++
 1 file changed, 46 insertions(+)
 create mode 100644 vendor/markbaker/matrix/classes/src/Operations/subtract.php

(limited to 'vendor/markbaker/matrix/classes/src/Operations/subtract.php')

diff --git a/vendor/markbaker/matrix/classes/src/Operations/subtract.php b/vendor/markbaker/matrix/classes/src/Operations/subtract.php
new file mode 100644
index 0000000..72759b7
--- /dev/null
+++ b/vendor/markbaker/matrix/classes/src/Operations/subtract.php
@@ -0,0 +1,46 @@
+<?php
+
+/**
+ *
+ * Function code for the matrix subtraction operation
+ *
+ * @copyright  Copyright (c) 2018 Mark Baker (https://github.com/MarkBaker/PHPMatrix)
+ * @license    https://opensource.org/licenses/MIT    MIT
+ */
+
+namespace Matrix;
+
+use Matrix\Operators\Subtraction;
+
+/**
+ * Subtracts two or more matrices
+ *
+ * @param array<int, mixed> $matrixValues The matrices to subtract
+ * @return Matrix
+ * @throws Exception
+ */
+if (!function_exists(__NAMESPACE__ . '\\subtract')) {
+    function subtract(...$matrixValues): Matrix
+    {
+        if (count($matrixValues) < 2) {
+            throw new Exception('Subtraction operation requires at least 2 arguments');
+        }
+
+        $matrix = array_shift($matrixValues);
+
+        if (is_array($matrix)) {
+            $matrix = new Matrix($matrix);
+        }
+        if (!$matrix instanceof Matrix) {
+            throw new Exception('Subtraction arguments must be Matrix or array');
+        }
+
+        $result = new Subtraction($matrix);
+
+        foreach ($matrixValues as $matrix) {
+            $result->execute($matrix);
+        }
+
+        return $result->result();
+    }
+}
-- 
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