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+///////////////////////////////////////////////////////////////////////////////////////////////////
+// OpenGL Mathematics Copyright (c) 2005 - 2011 G-Truc Creation (www.g-truc.net)
+///////////////////////////////////////////////////////////////////////////////////////////////////
+// Created : 2006-01-08
+// Updated : 2006-11-13
+// Licence : This source is under MIT License
+// File    : glm/gtx/fast_trigonometry.hpp
+///////////////////////////////////////////////////////////////////////////////////////////////////
+// Dependency:
+// - GLM core
+///////////////////////////////////////////////////////////////////////////////////////////////////
+
+#ifndef glm_gtx_fast_trigonometry
+#define glm_gtx_fast_trigonometry
+
+// Dependency:
+#include "../glm.hpp"
+
+#if(defined(GLM_MESSAGES) && !defined(glm_ext))
+#	pragma message("GLM: GLM_GTX_fast_trigonometry extension included")
+#endif
+
+namespace glm{
+namespace gtx{
+namespace fast_trigonometry	///< GLM_GTX_fast_trigonometry extension: Fast but less accurate implementations of trigonometric functions.
+{
+	/// \addtogroup gtx_fast_trigonometry
+	/// @{
+
+	//! Faster than the common sin function but less accurate. 
+	//! Defined between -2pi and 2pi. 
+	//! From GLM_GTX_fast_trigonometry extension.
+    template <typename T> 
+	T fastSin(const T& angle);
+
+    //! Faster than the common cos function but less accurate.
+	//! Defined between -2pi and 2pi.
+	//! From GLM_GTX_fast_trigonometry extension.
+	template <typename T> 
+	T fastCos(const T& angle);
+
+    //! Faster than the common tan function but less accurate. 
+	//! Defined between -2pi and 2pi. 
+	//! From GLM_GTX_fast_trigonometry extension.
+	template <typename T> 
+	T fastTan(const T& angle);
+
+    //! Faster than the common asin function but less accurate. 
+	//! Defined between -2pi and 2pi.
+	//! From GLM_GTX_fast_trigonometry extension.
+	template <typename T> 
+	T fastAsin(const T& angle);
+
+	//! Faster than the common acos function but less accurate. 
+	//! Defined between -2pi and 2pi. 
+	//! From GLM_GTX_fast_trigonometry extension.
+    template <typename T> 
+	T fastAcos(const T& angle);
+
+	//! Faster than the common atan function but less accurate.
+	//! Defined between -2pi and 2pi. 
+	//! From GLM_GTX_fast_trigonometry extension.
+	template <typename T> 
+	T fastAtan(const T& y, const T& x);
+
+	//! Faster than the common atan function but less accurate. 
+	//! Defined between -2pi and 2pi.
+	//! From GLM_GTX_fast_trigonometry extension.
+    template <typename T> 
+	T fastAtan(const T& angle);
+
+	/// @}
+}//namespace fast_trigonometry
+}//namespace gtx
+}//namespace glm
+
+#include "fast_trigonometry.inl"
+
+namespace glm{using namespace gtx::fast_trigonometry;}
+
+#endif//glm_gtx_fast_trigonometry