pub fn mat4d( m00: f64, m01: f64, m02: f64, m03: f64, m10: f64, m11: f64, m12: f64, m13: f64, m20: f64, m21: f64, m22: f64, m23: f64, m30: f64, m31: f64, m32: f64, m33: f64, ) -> Mat4d