text: ///////////////////////////////////////////////////////////////////////////////////
  /// OpenGL Mathematics (glm.g-truc.net)
  ///
  /// Copyright (c) 2005 - 2013 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_vector_relational.inl
  /// @date 2008-08-03 / 2011-09-09
  /// @author Christophe Riccio
  ///////////////////////////////////////////////////////////////////////////////////
  
  #include <limits>
  #include <algorithm>
  namespace glm
  {
  	template <typename T, precision P, template <typename, precision> class vecType>
  	GLM_FUNC_QUALIFIER typename vecType<T, P>::bool_type lessThan
  	(
  		vecType<T, P> const & x,
  		vecType<T, P> const & y
  	)
  	{
  		GLM_STATIC_ASSERT(std::numeric_limits<T>::is_iec559 || std::numeric_limits<T>::is_integer,
  			"Invalid template instantiation of 'lessThan', GLM vector types required floating-point or integer value types vectors");
  		assert(x.length() == y.length());
  
  		typename vecType<bool, P>::bool_type Result(vecType<bool, P>::_null);
  		for(int i = 0; i < x.length(); ++i)
  			Result[i] = x[i] < y[i];
  
  		return Result;
  	}
  
  	template <typename T, precision P, template <typename, precision> class vecType>
  	GLM_FUNC_QUALIFIER typename vecType<T, P>::bool_type lessThanEqual
  	(
  		vecType<T, P> const & x,
  		vecType<T, P> const & y
  	)
  	{
  		GLM_STATIC_ASSERT(std::numeric_limits<T>::is_iec559 || std::numeric_limits<T>::is_integer,
  			"Invalid template instantiation of 'lessThanEqual', GLM vector types required floating-point or integer value types vectors");
  		assert(x.length() == y.length());
  
  		typename vecType<bool, P>::bool_type Result(vecType<bool, P>::_null);
  		for(int i = 0; i < x.length(); ++i)
  			Result[i] = x[i] <= y[i];
  		return Result;
  	}
  
  	template <typename T, precision P, template <typename, precision> class vecType>
  	GLM_FUNC_QUALIFIER typename vecType<T, P>::bool_type greaterThan
  	(
  		vecType<T, P> const & x,
  		vecType<T, P> const & y
  	)
  	{
  		GLM_STATIC_ASSERT(std::numeric_limits<T>::is_iec559 || std::numeric_limits<T>::is_integer,
  			"Invalid template instantiation of 'greaterThan', GLM vector types required floating-point or integer value types vectors");
  		assert(x.length() == y.length());
  
  		typename vecType<bool, P>::bool_type Result(vecType<bool, P>::_null);
  		for(int i = 0; i < x.length(); ++i)
  			Result[i] = x[i] > y[i];
  		return Result;
  	}
  
  	template <typename T, precision P, template <typename, precision> class vecType>
  	GLM_FUNC_QUALIFIER typename vecType<T, P>::bool_type greaterThanEqual
  	(
  		vecType<T, P> const & x,
  		vecType<T, P> const & y
  	)
  	{
  		GLM_STATIC_ASSERT(std::numeric_limits<T>::is_iec559 || std::numeric_limits<T>::is_integer,
  			"Invalid template instantiation of 'greaterThanEqual', GLM vector types required floating-point or integer value types vectors");
  		assert(x.length() == y.length());
  
  		typename vecType<bool, P>::bool_type Result(vecType<bool, P>::_null);
  		for(int i = 0; i < x.length(); ++i)
  			Result[i] = x[i] >= y[i];
  		return Result;
  	}
  
  	template <typename T, precision P, template <typename, precision> class vecType>
  	GLM_FUNC_QUALIFIER typename vecType<T, P>::bool_type equal
  	(
  		vecType<T, P> const & x,
  		vecType<T, P> const & y
  	)
  	{
  		//GLM_STATIC_ASSERT(detail::is_vector<vecType<T, P> >::_YES,
  		//	"Invalid template instantiation of 'equal', GLM vector types required");
  		assert(x.length() == y.length());
  
  		typename vecType<bool, P>::bool_type Result(vecType<bool, P>::_null);
  		for(int i = 0; i < x.length(); ++i)
  			Result[i] = x[i] == y[i];
  		return Result;
  	}
  
  	template <typename T, precision P, template <typename, precision> class vecType>
  	GLM_FUNC_QUALIFIER typename vecType<T, P>::bool_type notEqual
  	(
  		vecType<T, P> const & x,
  		vecType<T, P> const & y
  	)
  	{
  		//GLM_STATIC_ASSERT(detail::is_vector<vecType<T, P> >::_YES,
  		//	"Invalid template instantiation of 'notEqual', GLM vector types required");
  		assert(x.length() == y.length());
  
  		typename vecType<bool, P>::bool_type Result(vecType<bool, P>::_null);
  		for(int i = 0; i < x.length(); ++i)
  			Result[i] = x[i] != y[i];
  		return Result;
  	}
  
  	template <precision P, template <typename, precision> class vecType>
  	GLM_FUNC_QUALIFIER bool any(vecType<bool, P> const & v)
  	{
  		//GLM_STATIC_ASSERT(detail::is_vector<vecType<bool, P> >::_YES,
  		//	"Invalid template instantiation of 'any', GLM boolean vector types required");
  
  		bool Result = false;
  		for(int i = 0; i < v.length(); ++i)
  			Result = Result || v[i];
  		return Result;
  	}
  
  	template <precision P, template <typename, precision> class vecType>
  	GLM_FUNC_QUALIFIER bool all(vecType<bool, P> const & v)
  	{
  		//GLM_STATIC_ASSERT(detail::is_vector<vecType<bool, P> >::_YES,
  		//	"Invalid template instantiation of 'all', GLM boolean vector types required");
  
  		bool Result = true;
  		for(int i = 0; i < v.length(); ++i)
  			Result = Result && v[i];
  		return Result;
  	}
  
  	template <precision P, template <typename, precision> class vecType>
  	GLM_FUNC_QUALIFIER vecType<bool, P> not_(vecType<bool, P> const & v)
  	{
  		//GLM_STATIC_ASSERT(detail::is_vector<vecType<bool, P> >::_YES,
  		//	"Invalid template instantiation of 'not_', GLM vector types required");
  
  		typename vecType<bool, P>::bool_type Result(vecType<bool, P>::_null);
  		for(int i = 0; i < v.length(); ++i)
  			Result[i] = !v[i];
  		return Result;
  	}
  }//namespace glm
  
  