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diff --git a/src/glm/gtx/handed_coordinate_space.hpp b/src/glm/gtx/handed_coordinate_space.hpp
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+///////////////////////////////////////////////////////////////////////////////////////////////////
+// OpenGL Mathematics Copyright (c) 2005 - 2011 G-Truc Creation (www.g-truc.net)
+///////////////////////////////////////////////////////////////////////////////////////////////////
+// Created : 2005-12-21
+// Updated : 2009-02-19
+// Licence : This source is under MIT License
+// File    : glm/gtx/handed_coordinate_space.hpp
+///////////////////////////////////////////////////////////////////////////////////////////////////
+// Dependency:
+// - GLM core
+///////////////////////////////////////////////////////////////////////////////////////////////////
+
+#ifndef glm_gtx_handed_coordinate_space
+#define glm_gtx_handed_coordinate_space
+
+// Dependency:
+#include "../glm.hpp"
+
+#if(defined(GLM_MESSAGES) && !defined(glm_ext))
+#	pragma message("GLM: GLM_GTX_handed_coordinate_space extension included")
+#endif
+
+namespace glm{
+namespace gtx{
+namespace handed_coordinate_space ///< GLM_GTX_handed_coordinate_space extension: To know if a set of three basis vectors defines a right or left-handed coordinate system.
+{
+	/// \addtogroup gtx_handed_coordinate_space
+	/// @{
+
+	//! Return if a trihedron right handed or not.
+	//! From GLM_GTX_handed_coordinate_space extension.
+	template <typename T> 
+	bool rightHanded(
+		detail::tvec3<T> const & tangent, 
+		detail::tvec3<T> const & binormal, 
+		detail::tvec3<T> const & normal);
+
+	//! Return if a trihedron left handed or not.
+	//! From GLM_GTX_handed_coordinate_space extension.
+	template <typename T> 
+	bool leftHanded(
+		detail::tvec3<T> const & tangent, 
+		detail::tvec3<T> const & binormal, 
+		detail::tvec3<T> const & normal);
+
+	/// @}
+}// namespace handed_coordinate_space
+}// namespace gtx
+}// namespace glm
+
+#include "handed_coordinate_space.inl"
+
+namespace glm{using namespace gtx::handed_coordinate_space;}
+
+#endif//glm_gtx_handed_coordinate_space