text: ///////////////////////////////////////////////////////////////////////////////////
  /// 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 core
  /// @file glm/core/func_matrix.hpp
  /// @date 2008-08-03 / 2011-06-15
  /// @author Christophe Riccio
  ///
  /// @see <a href="http://www.opengl.org/registry/doc/GLSLangSpec.4.20.8.pdf">GLSL 4.20.8 specification, section 8.6 Matrix Functions</a>
  /// 
  /// @defgroup core_func_matrix Matrix functions
  /// @ingroup core
  /// 
  /// For each of the following built-in matrix functions, there is both a 
  /// single-precision floating point version, where all arguments and return values 
  /// are single precision, and a double-precision floating version, where all 
  /// arguments and return values are double precision. Only the single-precision 
  /// floating point version is shown.
  ///////////////////////////////////////////////////////////////////////////////////
  
  #ifndef GLM_CORE_func_matrix
  #define GLM_CORE_func_matrix GLM_VERSION
  
  namespace glm
  {
  	/// @addtogroup core_func_matrix
  	/// @{
  
  	/// Multiply matrix x by matrix y component-wise, i.e., 
  	/// result[i][j] is the scalar product of x[i][j] and y[i][j].
  	/// 
  	/// @tparam matType Floating-point matrix types.
      ///
      /// @see <a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/matrixCompMult.xml">GLSL matrixCompMult man page</a>
      /// @see <a href="http://www.opengl.org/registry/doc/GLSLangSpec.4.20.8.pdf">GLSL 4.20.8 specification, section 8.6 Matrix Functions</a>
  	template <typename matType> 
  	matType matrixCompMult(
  		matType const & x, 
  		matType const & y);
  
  	/// Treats the first parameter c as a column vector 
  	/// and the second parameter r as a row vector
  	/// and does a linear algebraic matrix multiply c * r.
  	/// 
  	/// @tparam matType Floating-point matrix types.
      ///
      /// @see <a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/outerProduct.xml">GLSL outerProduct man page</a>
      /// @see <a href="http://www.opengl.org/registry/doc/GLSLangSpec.4.20.8.pdf">GLSL 4.20.8 specification, section 8.6 Matrix Functions</a>
  	/// 
  	/// @todo Clarify the declaration to specify that matType doesn't have to be provided when used.
      template <typename vecType, typename matType> 
  	matType outerProduct(
  		vecType const & c, 
  		vecType const & r);
  
  	/// Returns the transposed matrix of x
  	/// 
  	/// @tparam matType Floating-point matrix types.
      ///
      /// @see <a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/transpose.xml">GLSL transpose man page</a>
      /// @see <a href="http://www.opengl.org/registry/doc/GLSLangSpec.4.20.8.pdf">GLSL 4.20.8 specification, section 8.6 Matrix Functions</a>	
      template <typename matType> 
  	typename matType::transpose_type transpose(
  		matType const & x);
  	
  	/// Return the determinant of a mat2 matrix. 
  	/// 
  	/// @tparam valType Floating-point scalar types.
      ///
      /// @see <a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/determinant.xml">GLSL determinant man page</a>
      /// @see <a href="http://www.opengl.org/registry/doc/GLSLangSpec.4.20.8.pdf">GLSL 4.20.8 specification, section 8.6 Matrix Functions</a>	
  	template <typename valType> 
  	typename detail::tmat2x2<valType>::value_type determinant(
  		detail::tmat2x2<valType> const & m);
  
  	/// Return the determinant of a mat3 matrix. 
  	/// 
  	/// @tparam valType Floating-point scalar types.
      ///
      /// @see <a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/determinant.xml">GLSL determinant man page</a>
      /// @see <a href="http://www.opengl.org/registry/doc/GLSLangSpec.4.20.8.pdf">GLSL 4.20.8 specification, section 8.6 Matrix Functions</a>	
  	template <typename valType> 
  	typename detail::tmat3x3<valType>::value_type determinant(
  		detail::tmat3x3<valType> const & m);
  
  	/// Return the determinant of a mat4 matrix. 
  	/// 
  	/// @tparam valType Floating-point scalar types.
      ///
      /// @see <a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/determinant.xml">GLSL determinant man page</a>
      /// @see <a href="http://www.opengl.org/registry/doc/GLSLangSpec.4.20.8.pdf">GLSL 4.20.8 specification, section 8.6 Matrix Functions</a>		
      template <typename valType> 
  	typename detail::tmat4x4<valType>::value_type determinant(
  		detail::tmat4x4<valType> const & m);
  
  	/// Return the inverse of a mat2 matrix. 
  	/// 
  	/// @tparam valType Floating-point scalar types.
      ///
      /// @see <a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/inverse.xml">GLSL inverse man page</a>
      /// @see <a href="http://www.opengl.org/registry/doc/GLSLangSpec.4.20.8.pdf">GLSL 4.20.8 specification, section 8.6 Matrix Functions</a>	 
  	template <typename valType> 
  	detail::tmat2x2<valType> inverse(
  		detail::tmat2x2<valType> const & m);
  
  	/// Return the inverse of a mat3 matrix. 
  	/// 
  	/// @tparam valType Floating-point scalar types.
      ///
      /// @see <a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/inverse.xml">GLSL inverse man page</a>
      /// @see <a href="http://www.opengl.org/registry/doc/GLSLangSpec.4.20.8.pdf">GLSL 4.20.8 specification, section 8.6 Matrix Functions</a> 
  	template <typename valType> 
  	detail::tmat3x3<valType> inverse(
  		detail::tmat3x3<valType> const & m);
  
  	/// Return the inverse of a mat4 matrix. 
  	/// 
  	/// @tparam valType Floating-point scalar types.
      ///
      /// @see <a href="http://www.opengl.org/sdk/docs/manglsl/xhtml/inverse.xml">GLSL inverse man page</a>
      /// @see <a href="http://www.opengl.org/registry/doc/GLSLangSpec.4.20.8.pdf">GLSL 4.20.8 specification, section 8.6 Matrix Functions</a>
  	template <typename valType> 
  	detail::tmat4x4<valType> inverse(
  		detail::tmat4x4<valType> const & m);
  
  	/// @}
  }//namespace glm
  
  #include "func_matrix.inl"
  
  #endif//GLM_CORE_func_matrix
  