diff --git a/glm/gtc/type_ptr.hpp b/glm/gtc/type_ptr.hpp
index 43f35d38..da6f81c8 100644
--- a/glm/gtc/type_ptr.hpp
+++ b/glm/gtc/type_ptr.hpp
@@ -1,14 +1,34 @@
-///////////////////////////////////////////////////////////////////////////////////////////////////
-// OpenGL Mathematics Copyright (c) 2005 - 2011 G-Truc Creation (www.g-truc.net)
-///////////////////////////////////////////////////////////////////////////////////////////////////
-// Created : 2009-05-06
-// Updated : 2010-04-30
-// Licence : This source is under MIT License
-// File    : glm/gtc/type_ptr.hpp
-///////////////////////////////////////////////////////////////////////////////////////////////////
-// Dependency:
-// - GLM core
-///////////////////////////////////////////////////////////////////////////////////////////////////
+///////////////////////////////////////////////////////////////////////////////////
+/// OpenGL Mathematics (glm.g-truc.net)
+///
+/// Copyright (c) 2005 - 2011 G-Truc Creation (www.g-truc.net)
+/// Permission is hereby granted, free of charge, to any person obtaining a copy
+/// of this software and associated documentation files (the "Software"), to deal
+/// in the Software without restriction, including without limitation the rights
+/// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+/// copies of the Software, and to permit persons to whom the Software is
+/// furnished to do so, subject to the following conditions:
+/// 
+/// The above copyright notice and this permission notice shall be included in
+/// all copies or substantial portions of the Software.
+/// 
+/// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+/// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+/// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+/// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+/// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+/// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+/// THE SOFTWARE.
+///
+/// @ref gtc_type_ptr
+/// @file glm/gtc/type_ptr.hpp
+/// @date 2009-05-06 / 2011-06-05
+/// @author Christophe Riccio
+///
+/// @see core (dependence)
+/// @see gtc_half_float (dependence)
+/// @see gtc_quaternion (dependence)
+///////////////////////////////////////////////////////////////////////////////////
 
 #ifndef glm_gtc_type_ptr
 #define glm_gtc_type_ptr
@@ -28,7 +48,7 @@ namespace type_ptr ///< GLM_GTC_type_ptr extension: Get access to vectors & matr
 	/// \addtogroup gtc_type_ptr
 	///@{
 
-	//! Get the const address of the vector content.
+	//! Return the constant address to the data of the input parameter.
 	//! From GLM_GTC_type_ptr extension.
 	template<typename T>
 	GLM_FUNC_QUALIFIER T const * value_ptr
@@ -39,7 +59,7 @@ namespace type_ptr ///< GLM_GTC_type_ptr extension: Get access to vectors & matr
 		return &(vec.x);
 	}
 
-	//! Get the address of the vector content.
+	//! Return the constant address to the data of the input parameter.
 	//! From GLM_GTC_type_ptr extension.
 	template<typename T>
 	GLM_FUNC_QUALIFIER T * value_ptr
@@ -50,7 +70,7 @@ namespace type_ptr ///< GLM_GTC_type_ptr extension: Get access to vectors & matr
 		return &(vec.x);
 	}
 
-	//! Get the const address of the vector content.
+	//! Return the constant address to the data of the input parameter.
 	//! From GLM_GTC_type_ptr extension.
 	template<typename T>
 	GLM_FUNC_QUALIFIER T const * value_ptr
@@ -61,7 +81,7 @@ namespace type_ptr ///< GLM_GTC_type_ptr extension: Get access to vectors & matr
 		return &(vec.x);
 	}
 
-	//! Get the address of the vector content.
+	//! Return the constant address to the data of the input parameter.
 	//! From GLM_GTC_type_ptr extension.
 	template<typename T>
 	GLM_FUNC_QUALIFIER T * value_ptr
@@ -72,7 +92,7 @@ namespace type_ptr ///< GLM_GTC_type_ptr extension: Get access to vectors & matr
 		return &(vec.x);
 	}
 		
-	//! Get the const address of the vector content.
+	//! Return the constant address to the data of the input parameter.
 	//! From GLM_GTC_type_ptr extension.
 	template<typename T>
 	GLM_FUNC_QUALIFIER T const * value_ptr
@@ -83,7 +103,7 @@ namespace type_ptr ///< GLM_GTC_type_ptr extension: Get access to vectors & matr
 		return &(vec.x);
 	}
 
-	//! Get the address of the vector content.
+	//! Return the constant address to the data of the input parameter.
 	//! From GLM_GTC_type_ptr extension.
 	template<typename T>
 	GLM_FUNC_QUALIFIER T * value_ptr
@@ -94,7 +114,7 @@ namespace type_ptr ///< GLM_GTC_type_ptr extension: Get access to vectors & matr
 		return &(vec.x);
 	}
 
-	//! Get the const address of the matrix content.
+	//! Return the constant address to the data of the input parameter.
 	//! From GLM_GTC_type_ptr extension.
 	template<typename T>
 	GLM_FUNC_QUALIFIER T const * value_ptr
@@ -105,7 +125,7 @@ namespace type_ptr ///< GLM_GTC_type_ptr extension: Get access to vectors & matr
 		return &(mat[0].x);
 	}
 
-	//! Get the address of the matrix content.
+	//! Return the constant address to the data of the input parameter.
 	//! From GLM_GTC_type_ptr extension.
 	template<typename T>
 	GLM_FUNC_QUALIFIER T * value_ptr
@@ -116,7 +136,7 @@ namespace type_ptr ///< GLM_GTC_type_ptr extension: Get access to vectors & matr
 		return &(mat[0].x);
 	}
 		
-	//! Get the const address of the matrix content.
+	//! Return the constant address to the data of the input parameter.
 	//! From GLM_GTC_type_ptr extension.
 	template<typename T>
 	GLM_FUNC_QUALIFIER T const * value_ptr
@@ -127,7 +147,7 @@ namespace type_ptr ///< GLM_GTC_type_ptr extension: Get access to vectors & matr
 		return &(mat[0].x);
 	}
 
-	//! Get the address of the matrix content.
+	//! Return the constant address to the data of the input parameter.
 	//! From GLM_GTC_type_ptr extension.
 	template<typename T>
 	GLM_FUNC_QUALIFIER T * value_ptr
@@ -138,7 +158,7 @@ namespace type_ptr ///< GLM_GTC_type_ptr extension: Get access to vectors & matr
 		return &(mat[0].x);
 	}
 		
-	//! Get the const address of the matrix content.
+	//! Return the constant address to the data of the input parameter.
 	//! From GLM_GTC_type_ptr extension.
 	template<typename T>
 	GLM_FUNC_QUALIFIER T const * value_ptr
@@ -149,7 +169,7 @@ namespace type_ptr ///< GLM_GTC_type_ptr extension: Get access to vectors & matr
 		return &(mat[0].x);
 	}
 
-	//! Get the address of the matrix content.
+	//! Return the constant address to the data of the input parameter.
 	//! From GLM_GTC_type_ptr extension.
 	template<typename T>
 	GLM_FUNC_QUALIFIER T * value_ptr
@@ -160,7 +180,7 @@ namespace type_ptr ///< GLM_GTC_type_ptr extension: Get access to vectors & matr
 		return &(mat[0].x);
 	}
 
-	//! Get the const address of the matrix content.
+	//! Return the constant address to the data of the input parameter.
 	//! From GLM_GTC_type_ptr extension.
 	template<typename T>
 	GLM_FUNC_QUALIFIER T const * value_ptr
@@ -171,7 +191,7 @@ namespace type_ptr ///< GLM_GTC_type_ptr extension: Get access to vectors & matr
 		return &(mat[0].x);
 	}
 
-	//! Get the address of the matrix content.
+	//! Return the constant address to the data of the input parameter.
 	//! From GLM_GTC_type_ptr extension.
 	template<typename T>
 	GLM_FUNC_QUALIFIER T * value_ptr
@@ -182,7 +202,7 @@ namespace type_ptr ///< GLM_GTC_type_ptr extension: Get access to vectors & matr
 		return &(mat[0].x);
 	}
 		
-	//! Get the const address of the matrix content.
+	//! Return the constant address to the data of the input parameter.
 	//! From GLM_GTC_type_ptr extension.
 	template<typename T>
 	GLM_FUNC_QUALIFIER T const * value_ptr
@@ -193,7 +213,7 @@ namespace type_ptr ///< GLM_GTC_type_ptr extension: Get access to vectors & matr
 		return &(mat[0].x);
 	}
 
-	//! Get the address of the matrix content.
+	//! Return the constant address to the data of the input parameter.
 	//! From GLM_GTC_type_ptr extension.
 	template<typename T>
 	GLM_FUNC_QUALIFIER T * value_ptr
@@ -204,7 +224,7 @@ namespace type_ptr ///< GLM_GTC_type_ptr extension: Get access to vectors & matr
 		return &(mat[0].x);
 	}
 		
-	//! Get the const address of the matrix content.
+	//! Return the constant address to the data of the input parameter.
 	//! From GLM_GTC_type_ptr extension.
 	template<typename T>
 	GLM_FUNC_QUALIFIER T const * value_ptr
@@ -215,7 +235,7 @@ namespace type_ptr ///< GLM_GTC_type_ptr extension: Get access to vectors & matr
 		return &(mat[0].x);
 	}
 
-	//! Get the address of the matrix content.
+	//! Return the constant address to the data of the input parameter.
 	//! From GLM_GTC_type_ptr extension.
 	template<typename T>
 	GLM_FUNC_QUALIFIER T * value_ptr
@@ -226,7 +246,7 @@ namespace type_ptr ///< GLM_GTC_type_ptr extension: Get access to vectors & matr
 		return &(mat[0].x);
 	}
 		
-	//! Get the const address of the matrix content.
+	//! Return the constant address to the data of the input parameter.
 	//! From GLM_GTC_type_ptr extension.
 	template<typename T>
 	GLM_FUNC_QUALIFIER T const * value_ptr
@@ -237,7 +257,7 @@ namespace type_ptr ///< GLM_GTC_type_ptr extension: Get access to vectors & matr
 		return &(mat[0].x);
 	}
 
-	//! Get the address of the matrix content.
+	//! Return the constant address to the data of the input parameter.
 	//! From GLM_GTC_type_ptr extension.
 	template<typename T>
 	GLM_FUNC_QUALIFIER T * value_ptr
@@ -248,7 +268,7 @@ namespace type_ptr ///< GLM_GTC_type_ptr extension: Get access to vectors & matr
 		return &(mat[0].x);
 	}
 		
-	//! Get the const address of the matrix content.
+	//! Return the constant address to the data of the input parameter.
 	//! From GLM_GTC_type_ptr extension.
 	template<typename T>
 	GLM_FUNC_QUALIFIER T const * value_ptr
@@ -259,7 +279,7 @@ namespace type_ptr ///< GLM_GTC_type_ptr extension: Get access to vectors & matr
 		return &(mat[0].x);
 	}
 
-	//! Get the address of the matrix content.
+	//! Return the constant address to the data of the input parameter.
 	//! From GLM_GTC_type_ptr extension.
 	template<typename T>
 	GLM_FUNC_QUALIFIER T * value_ptr
@@ -270,7 +290,7 @@ namespace type_ptr ///< GLM_GTC_type_ptr extension: Get access to vectors & matr
 		return &(mat[0].x);
 	}
 		
-	//! Get the const address of the matrix content.
+	//! Return the constant address to the data of the input parameter.
 	//! From GLM_GTC_type_ptr extension.
 	template<typename T>
 	GLM_FUNC_QUALIFIER T const * value_ptr
@@ -280,7 +300,18 @@ namespace type_ptr ///< GLM_GTC_type_ptr extension: Get access to vectors & matr
 	{
 		return &(mat[0].x);
 	}
-
+    
+	//! Return the constant address to the data of the input parameter.
+	//! From GLM_GTC_type_ptr extension.
+	template<typename T>
+	GLM_FUNC_QUALIFIER T const * value_ptr
+	(
+        detail::tquat<T> const & q
+    )
+	{
+		return &(q[0]);
+	}
+    
 	//! Get the address of the matrix content.
 	//! From GLM_GTC_type_ptr extension.
 	template<typename T>
@@ -378,7 +409,6 @@ namespace type_ptr ///< GLM_GTC_type_ptr extension: Get access to vectors & matr
 		memcpy(value_ptr(Result), ptr, sizeof(detail::tmat3x4<T>));
 		return Result;
 	}
-
         
 	//! Build a matrix from a pointer.
 	//! From GLM_GTC_type_ptr extension.
@@ -433,9 +463,18 @@ namespace type_ptr ///< GLM_GTC_type_ptr extension: Get access to vectors & matr
 	{
 		return make_mat4x4(ptr);
 	}
-        
-	///@}
-
+ 
+	//! Build a quaternion from a pointer.
+	//! From GLM_GTC_type_ptr extension.
+	template<typename T>
+	GLM_FUNC_QUALIFIER detail::tquat<T> make_quat(T const * const ptr)
+	{
+		detail::tquat<T> Result;
+		memcpy(value_ptr(Result), ptr, sizeof(detail::tquat<T>));
+		return Result;
+	}
+    
+	/// @}
 }//namespace type_ptr
 }//namespace gtc
 }//namespace glm