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File: adjoint.php

<?php

/**
 *
 * Function code for the matrix adjoint() function
 *
 * @copyright  Copyright (c) 2018 Mark Baker (https://github.com/MarkBaker/PHPMatrix)
 * @license    https://opensource.org/licenses/MIT    MIT
 */

namespace Matrix;

/**
 * Returns the adjoint of a matrix or an array.
 *
 * @param Matrix|array $matrix Matrix or an array to treat as a matrix.
 * @return Matrix The new matrix
 * @throws Exception If argument isn't a valid matrix or array.
 */
function adjoint($matrix)
{
    if (is_array($matrix)) {
        $matrix = new Matrix($matrix);
    }
    if (!$matrix instanceof Matrix) {
        throw new Exception('Must be Matrix or array');
    }

    return Functions::adjoint($matrix);
}