MathPHP\LinearAlgebra\MatrixFactorTest::dataProviderForFunctionSquareMatrix PHP Method

    public function dataProviderForFunctionSquareMatrix()
    {
        $function = function ($x) {
            return $x * 2;
        };
        return [[[[$function]]], [[[$function, $function], [$function, $function]]], [[[$function, $function, $function], [$function, $function, $function], [$function, $function, $function]]]];
    }