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diff --git a/src/glm/gtx/matrix_operation.hpp b/src/glm/gtx/matrix_operation.hpp
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+///////////////////////////////////////////////////////////////////////////////////////////////////
+// OpenGL Mathematics Copyright (c) 2005 - 2011 G-Truc Creation (www.g-truc.net)
+///////////////////////////////////////////////////////////////////////////////////////////////////
+// Created : 2009-08-29
+// Updated : 2009-08-29
+// Licence : This source is under MIT License
+// File    : glm/gtx/matrix_operation.hpp
+///////////////////////////////////////////////////////////////////////////////////////////////////
+// Dependency:
+// - GLM core
+///////////////////////////////////////////////////////////////////////////////////////////////////
+
+#ifndef glm_gtx_matrix_operation
+#define glm_gtx_matrix_operation
+
+// Dependency:
+#include "../glm.hpp"
+
+#if(defined(GLM_MESSAGES) && !defined(glm_ext))
+#	pragma message("GLM: GLM_GTX_matrix_operation extension included")
+#endif
+
+namespace glm{
+namespace gtx{
+namespace matrix_operation ///< GLM_GTX_matrix_operation: Build diagonal matrices
+{
+	/// \addtogroup gtx_matrix_operation
+	/// @{
+
+	//! Build a diagonal matrix.
+	//! From GLM_GTX_matrix_operation extension.
+	template <typename valType> 
+	detail::tmat2x2<valType> diagonal2x2(
+		detail::tvec2<valType> const & v);
+
+	//! Build a diagonal matrix.
+	//! From GLM_GTX_matrix_operation extension.
+	template <typename valType> 
+	detail::tmat2x3<valType> diagonal2x3(
+		detail::tvec2<valType> const & v);
+
+	//! Build a diagonal matrix.
+	//! From GLM_GTX_matrix_operation extension.
+	template <typename valType> 
+	detail::tmat2x4<valType> diagonal2x4(
+		detail::tvec2<valType> const & v);
+
+	//! Build a diagonal matrix.
+	//! From GLM_GTX_matrix_operation extension.
+	template <typename valType> 
+	detail::tmat3x2<valType> diagonal3x2(
+		detail::tvec2<valType> const & v);
+
+	//! Build a diagonal matrix.
+	//! From GLM_GTX_matrix_operation extension.
+	template <typename valType> 
+	detail::tmat3x3<valType> diagonal3x3(
+		detail::tvec3<valType> const & v);
+
+	//! Build a diagonal matrix.
+	//! From GLM_GTX_matrix_operation extension.
+	template <typename valType> 
+	detail::tmat3x4<valType> diagonal3x4(
+		detail::tvec3<valType> const & v);
+
+	//! Build a diagonal matrix.
+	//! From GLM_GTX_matrix_operation extension.
+	template <typename valType> 
+	detail::tmat4x2<valType> diagonal4x2(
+		detail::tvec2<valType> const & v);
+
+	//! Build a diagonal matrix.
+	//! From GLM_GTX_matrix_operation extension.
+	template <typename valType> 
+	detail::tmat4x3<valType> diagonal4x3(
+		detail::tvec3<valType> const & v);
+
+	//! Build a diagonal matrix.
+	//! From GLM_GTX_matrix_operation extension.
+	template <typename valType> 
+	detail::tmat4x4<valType> diagonal4x4(
+		detail::tvec4<valType> const & v);
+
+	/// @}
+}//namespace matrix_operation
+}//namespace gtx
+}//namespace glm
+
+#include "matrix_operation.inl"
+
+namespace glm{using namespace gtx::matrix_operation;}
+
+#endif//glm_gtx_matrix_operation