text: ///////////////////////////////////////////////////////////////////////////////////
  /// OpenGL Mathematics (glm.g-truc.net)
  ///
  /// Copyright (c) 2005 - 2014 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.
  /// 
  /// Restrictions:
  ///		By making use of the Software for military purposes, you choose to make
  ///		a Bunny unhappy.
  /// 
  /// 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.inl
  /// @date 2011-06-15 / 2011-12-07
  /// @author Christophe Riccio
  ///////////////////////////////////////////////////////////////////////////////////
  
  #include <cstring>
  
  namespace glm
  {
  	/// @addtogroup gtc_type_ptr
  	/// @{
  
  	/// Return the constant address to the data of the vector input.
  	/// @see gtc_type_ptr
  	template<typename T, precision P>
  	GLM_FUNC_QUALIFIER T const * value_ptr
  	(
  		tvec2<T, P> const & vec
  	)
  	{
  		return &(vec.x);
  	}
  
  	//! Return the address to the data of the vector input.
  	/// @see gtc_type_ptr
  	template<typename T, precision P>
  	GLM_FUNC_QUALIFIER T * value_ptr
  	(
  		tvec2<T, P> & vec
  	)
  	{
  		return &(vec.x);
  	}
  
  	/// Return the constant address to the data of the vector input.
  	/// @see gtc_type_ptr
  	template<typename T, precision P>
  	GLM_FUNC_QUALIFIER T const * value_ptr
  	(
  		tvec3<T, P> const & vec
  	)
  	{
  		return &(vec.x);
  	}
  
  	//! Return the address to the data of the vector input.
  	/// @see gtc_type_ptr
  	template<typename T, precision P>
  	GLM_FUNC_QUALIFIER T * value_ptr
  	(
  		tvec3<T, P> & vec
  	)
  	{
  		return &(vec.x);
  	}
  		
  	/// Return the constant address to the data of the vector input.
  	/// @see gtc_type_ptr
  	template<typename T, precision P>
  	GLM_FUNC_QUALIFIER T const * value_ptr
  	(	
  		tvec4<T, P> const & vec
  	)
  	{
  		return &(vec.x);
  	}
  
  	//! Return the address to the data of the vector input.
  	//! From GLM_GTC_type_ptr extension.
  	template<typename T, precision P>
  	GLM_FUNC_QUALIFIER T * value_ptr
  	(	
  		tvec4<T, P> & vec
  	)
  	{
  		return &(vec.x);
  	}
  
  	/// Return the constant address to the data of the matrix input.
  	/// @see gtc_type_ptr
  	template<typename T, precision P>
  	GLM_FUNC_QUALIFIER T const * value_ptr
  	(
  		tmat2x2<T, P> const & mat
  	)
  	{
  		return &(mat[0].x);
  	}
  
  	//! Return the address to the data of the matrix input.
  	/// @see gtc_type_ptr
  	template<typename T, precision P>
  	GLM_FUNC_QUALIFIER T * value_ptr
  	(
  		tmat2x2<T, P> & mat
  	)
  	{
  		return &(mat[0].x);
  	}
  		
  	/// Return the constant address to the data of the matrix input.
  	/// @see gtc_type_ptr
  	template<typename T, precision P>
  	GLM_FUNC_QUALIFIER T const * value_ptr
  	(
  		tmat3x3<T, P> const & mat
  	)
  	{
  		return &(mat[0].x);
  	}
  
  	//! Return the address to the data of the matrix input.
  	/// @see gtc_type_ptr
  	template<typename T, precision P>
  	GLM_FUNC_QUALIFIER T * value_ptr
  	(
  		tmat3x3<T, P> & mat
  	)
  	{
  		return &(mat[0].x);
  	}
  		
  	/// Return the constant address to the data of the matrix input.
  	/// @see gtc_type_ptr
  	template<typename T, precision P>
  	GLM_FUNC_QUALIFIER T const * value_ptr
  	(
  		tmat4x4<T, P> const & mat
  	)
  	{
  		return &(mat[0].x);
  	}
  
  	//! Return the address to the data of the matrix input.
  	//! From GLM_GTC_type_ptr extension.
  	template<typename T, precision P>
  	GLM_FUNC_QUALIFIER T * value_ptr
  	(
  		tmat4x4<T, P> & mat
  	)
  	{
  		return &(mat[0].x);
  	}
  
  	/// Return the constant address to the data of the matrix input.
  	/// @see gtc_type_ptr
  	template<typename T, precision P>
  	GLM_FUNC_QUALIFIER T const * value_ptr
  	(
  		tmat2x3<T, P> const & mat
  	)
  	{
  		return &(mat[0].x);
  	}
  
  	//! Return the address to the data of the matrix input.
  	/// @see gtc_type_ptr
  	template<typename T, precision P>
  	GLM_FUNC_QUALIFIER T * value_ptr
  	(
  		tmat2x3<T, P> & mat
  	)
  	{
  		return &(mat[0].x);
  	}
  		
  	/// Return the constant address to the data of the matrix input.
  	/// @see gtc_type_ptr
  	template<typename T, precision P>
  	GLM_FUNC_QUALIFIER T const * value_ptr
  	(
  		tmat3x2<T, P> const & mat
  	)
  	{
  		return &(mat[0].x);
  	}
  
  	//! Return the address to the data of the matrix input.
  	/// @see gtc_type_ptr
  	template<typename T, precision P>
  	GLM_FUNC_QUALIFIER T * value_ptr
  	(
  		tmat3x2<T, P> & mat
  	)
  	{
  		return &(mat[0].x);
  	}
  		
  	/// Return the constant address to the data of the matrix input.
  	/// @see gtc_type_ptr
  	template<typename T, precision P>
  	GLM_FUNC_QUALIFIER T const * value_ptr
  	(
  		tmat2x4<T, P> const & mat
  	)
  	{
  		return &(mat[0].x);
  	}
  
  	//! Return the address to the data of the matrix input.
  	/// @see gtc_type_ptr
  	template<typename T, precision P>
  	GLM_FUNC_QUALIFIER T * value_ptr
  	(
  		tmat2x4<T, P> & mat
  	)
  	{
  		return &(mat[0].x);
  	}
  		
  	/// Return the constant address to the data of the matrix input.
  	/// @see gtc_type_ptr
  	template<typename T, precision P>
  	GLM_FUNC_QUALIFIER T const * value_ptr
  	(
  		tmat4x2<T, P> const & mat
  	)
  	{
  		return &(mat[0].x);
  	}
  
  	//! Return the address to the data of the matrix input.
  	/// @see gtc_type_ptr
  	template<typename T, precision P>
  	GLM_FUNC_QUALIFIER T * value_ptr
  	(	
  		tmat4x2<T, P> & mat
  	)
  	{
  		return &(mat[0].x);
  	}
  		
  	/// Return the constant address to the data of the matrix input.
  	/// @see gtc_type_ptr
  	template<typename T, precision P>
  	GLM_FUNC_QUALIFIER T const * value_ptr
  	(
  		tmat3x4<T, P> const & mat
  	)
  	{
  		return &(mat[0].x);
  	}
  
  	//! Return the address to the data of the matrix input.
  	/// @see gtc_type_ptr
  	template<typename T, precision P>
  	GLM_FUNC_QUALIFIER T * value_ptr
  	(
  		tmat3x4<T, P> & mat
  	)
  	{
  		return &(mat[0].x);
  	}
  		
  	/// Return the constant address to the data of the matrix input.
  	/// @see gtc_type_ptr
  	template<typename T, precision P>
  	GLM_FUNC_QUALIFIER T const * value_ptr
  	(
  		tmat4x3<T, P> const & mat
  	)
  	{
  		return &(mat[0].x);
  	}
  
  	/// Return the address to the data of the matrix input.
  	/// @see gtc_type_ptr
  	template<typename T, precision P>
  	GLM_FUNC_QUALIFIER T * value_ptr(tmat4x3<T, P> & mat)
  	{
  		return &(mat[0].x);
  	}
  
  	/// Return the constant address to the data of the input parameter.
  	/// @see gtc_type_ptr
  	template<typename T, precision P>
  	GLM_FUNC_QUALIFIER T const * value_ptr
  	(
  		tquat<T, P> const & q
  	)
  	{
  		return &(q[0]);
  	}
  
  	/// Return the address to the data of the quaternion input.
  	/// @see gtc_type_ptr
  	template<typename T, precision P>
  	GLM_FUNC_QUALIFIER T * value_ptr
  	(
  		tquat<T, P> & q
  	)
  	{
  		return &(q[0]);
  	}
  
  	/// Build a vector from a pointer.
  	/// @see gtc_type_ptr
  	template <typename T>
  	GLM_FUNC_QUALIFIER tvec2<T, defaultp> make_vec2(T const * const ptr)
  	{
  		tvec2<T, defaultp> Result;
  		memcpy(value_ptr(Result), ptr, sizeof(tvec2<T, defaultp>));
  		return Result;
  	}
  
  	/// Build a vector from a pointer.
  	/// @see gtc_type_ptr
  	template <typename T>
  	GLM_FUNC_QUALIFIER tvec3<T, defaultp> make_vec3(T const * const ptr)
  	{
  		tvec3<T, defaultp> Result;
  		memcpy(value_ptr(Result), ptr, sizeof(tvec3<T, defaultp>));
  		return Result;
  	}
  
  	/// Build a vector from a pointer.
  	/// @see gtc_type_ptr
  	template <typename T>
  	GLM_FUNC_QUALIFIER tvec4<T, defaultp> make_vec4(T const * const ptr)
  	{
  		tvec4<T, defaultp> Result;
  		memcpy(value_ptr(Result), ptr, sizeof(tvec4<T, defaultp>));
  		return Result;
  	}
  
  	/// Build a matrix from a pointer.
  	/// @see gtc_type_ptr
  	template <typename T>
  	GLM_FUNC_QUALIFIER tmat2x2<T, defaultp> make_mat2x2(T const * const ptr)
  	{
  		tmat2x2<T, defaultp> Result;
  		memcpy(value_ptr(Result), ptr, sizeof(tmat2x2<T, defaultp>));
  		return Result;
  	}
  
  	/// Build a matrix from a pointer.
  	/// @see gtc_type_ptr
  	template <typename T>
  	GLM_FUNC_QUALIFIER tmat2x3<T, defaultp> make_mat2x3(T const * const ptr)
  	{
  		tmat2x3<T, defaultp> Result;
  		memcpy(value_ptr(Result), ptr, sizeof(tmat2x3<T, defaultp>));
  		return Result;
  	}
  
  	/// Build a matrix from a pointer.
  	/// @see gtc_type_ptr
  	template <typename T>
  	GLM_FUNC_QUALIFIER tmat2x4<T, defaultp> make_mat2x4(T const * const ptr)
  	{
  		tmat2x4<T, defaultp> Result;
  		memcpy(value_ptr(Result), ptr, sizeof(tmat2x4<T, defaultp>));
  		return Result;
  	}
  
  	/// Build a matrix from a pointer.
  	/// @see gtc_type_ptr
  	template <typename T>
  	GLM_FUNC_QUALIFIER tmat3x2<T, defaultp> make_mat3x2(T const * const ptr)
  	{
  		tmat3x2<T, defaultp> Result;
  		memcpy(value_ptr(Result), ptr, sizeof(tmat3x2<T, defaultp>));
  		return Result;
  	}
  
  	//! Build a matrix from a pointer.
  	/// @see gtc_type_ptr
  	template <typename T>
  	GLM_FUNC_QUALIFIER tmat3x3<T, defaultp> make_mat3x3(T const * const ptr)
  	{
  		tmat3x3<T, defaultp> Result;
  		memcpy(value_ptr(Result), ptr, sizeof(tmat3x3<T, defaultp>));
  		return Result;
  	}
  
  	//! Build a matrix from a pointer.
  	/// @see gtc_type_ptr
  	template <typename T>
  	GLM_FUNC_QUALIFIER tmat3x4<T, defaultp> make_mat3x4(T const * const ptr)
  	{
  		tmat3x4<T, defaultp> Result;
  		memcpy(value_ptr(Result), ptr, sizeof(tmat3x4<T, defaultp>));
  		return Result;
  	}
  
  	//! Build a matrix from a pointer.
  	/// @see gtc_type_ptr
  	template <typename T>
  	GLM_FUNC_QUALIFIER tmat4x2<T, defaultp> make_mat4x2(T const * const ptr)
  	{
  		tmat4x2<T, defaultp> Result;
  		memcpy(value_ptr(Result), ptr, sizeof(tmat4x2<T, defaultp>));
  		return Result;
  	}
  
  	//! Build a matrix from a pointer.
  	/// @see gtc_type_ptr
  	template <typename T>
  	GLM_FUNC_QUALIFIER tmat4x3<T, defaultp> make_mat4x3(T const * const ptr)
  	{
  		tmat4x3<T, defaultp> Result;
  		memcpy(value_ptr(Result), ptr, sizeof(tmat4x3<T, defaultp>));
  		return Result;
  	}
  
  	//! Build a matrix from a pointer.
  	/// @see gtc_type_ptr
  	template <typename T>
  	GLM_FUNC_QUALIFIER tmat4x4<T, defaultp> make_mat4x4(T const * const ptr)
  	{
  		tmat4x4<T, defaultp> Result;
  		memcpy(value_ptr(Result), ptr, sizeof(tmat4x4<T, defaultp>));
  		return Result;
  	}
  
  	//! Build a matrix from a pointer.
  	/// @see gtc_type_ptr
  	template <typename T>
  	GLM_FUNC_QUALIFIER tmat2x2<T, defaultp> make_mat2(T const * const ptr)
  	{
  		return make_mat2x2(ptr);
  	}
  
  	//! Build a matrix from a pointer.
  	/// @see gtc_type_ptr
  	template <typename T>
  	GLM_FUNC_QUALIFIER tmat3x3<T, defaultp> make_mat3(T const * const ptr)
  	{
  		return make_mat3x3(ptr);
  	}
  		
  	//! Build a matrix from a pointer.
  	/// @see gtc_type_ptr
  	template <typename T>
  	GLM_FUNC_QUALIFIER tmat4x4<T, defaultp> make_mat4(T const * const ptr)
  	{
  		return make_mat4x4(ptr);
  	}
  
  	//! Build a quaternion from a pointer.
  	/// @see gtc_type_ptr
  	template <typename T>
  	GLM_FUNC_QUALIFIER tquat<T, defaultp> make_quat(T const * const ptr)
  	{
  		tquat<T, defaultp> Result;
  		memcpy(value_ptr(Result), ptr, sizeof(tquat<T, defaultp>));
  		return Result;
  	}
  
  	/// @}
  }//namespace glm
  
  