← All changes | vendor/markbaker/matrix/classes/src/functions/trace.php +8 -4 3.1.3 → 3.4.5 View file →

		@@ -6,21 +6,25 @@
6	6	*
7	7	* @copyright Copyright (c) 2018 Mark Baker (https://github.com/MarkBaker/PHPMatrix)
8	8	* @license https://opensource.org/licenses/MIT MIT
9	9	*/
	10	+
10	11	namespace Matrix;
11	12
12	13	/**
13	14	* Returns the trace of a matrix or an array.
14	15	*
15		- * @param Matrix|array $matrix Matrix or an array to treat as a matrix.
16		- * @return float The trace of the matrix
17		- * @throws Exception If argument isn't a valid matrix or array.
	16	+ * @param Matrix|array $matrix Matrix or an array to treat as a matrix.
	17	+ * @return float The trace of the matrix
	18	+ * @throws Exception If argument isn't a valid matrix or array.
18	19	*/
19	20	function trace($matrix)
20	21	{
21		- if (!is_object($matrix) || !($matrix instanceof Matrix)) {
	22	+ if (is_array($matrix)) {
22	23	$matrix = new Matrix($matrix);
	24	+ }
	25	+ if (!$matrix instanceof Matrix) {
	26	+ throw new Exception('Must be Matrix or array');
23	27	}
24	28
25	29	return Functions::trace($matrix);
26	30	}