GLM_STATIC_ASSERT(detail::type<X1>::is_float || std::numeric_limits<X1>::is_integer, "*mat4x4 constructor only takes float and integer types, 1st parameter type invalid.");
GLM_STATIC_ASSERT(detail::type<X1>::is_float || std::numeric_limits<X1>::is_integer, "*mat4x4 constructor only takes float and integer types, 1st parameter type invalid.");
GLM_STATIC_ASSERT(detail::type<Y1>::is_float || std::numeric_limits<Y1>::is_integer, "*mat4x4 constructor only takes float and integer types, 2nd parameter type invalid.");
GLM_STATIC_ASSERT(detail::type<Y1>::is_float || std::numeric_limits<Y1>::is_integer, "*mat4x4 constructor only takes float and integer types, 2nd parameter type invalid.");