identity.php

Go to the documentation of this file.

<?php
 
namespace Matrix;
 
if (!function_exists(__NAMESPACE__ . '\\identity')) {
    function identity($matrix): Matrix
    {
        if (is_array($matrix)) {
            $matrix = new Matrix($matrix);
        }
        if (!$matrix instanceof Matrix) {
            throw new Exception('Must be Matrix or array');
        }
 
        return Functions::identity($matrix);
    }
}