php-ml/src/Phpml/Exception/MatrixException.php

<?php

declare (strict_types = 1);

namespace Phpml\Exception;

class MatrixException extends \Exception
{
    /**
     * @return MatrixException
     */
    public static function notSquareMatrix()
    {
        return new self('Matrix is not square matrix');
    }

    /**
     * @return MatrixException
     */
    public static function columnOutOfRange()
    {
        return new self('Column out of range');
    }
}