public static void Negate(ref Matrix2x2 matrix, out Matrix2x2 result) { float m11 = -matrix.M11; float m12 = -matrix.M12; float m21 = -matrix.M21; float m22 = -matrix.M22; result.M11 = m11; result.M12 = m12; result.M21 = m21; result.M22 = m22; }