#ifndef BOOST_MPL_SAME_AS_HPP_INCLUDED

 #define BOOST_MPL_SAME_AS_HPP_INCLUDED

 // Copyright Aleksey Gurtovoy 2000-2004

 //

 // Distributed under the Boost Software License, Version 1.0. 

 // (See accompanying file LICENSE_1_0.txt or copy at 

 // http://www.boost.org/LICENSE_1_0.txt)

 //

 // See http://www.boost.org/libs/mpl for documentation.

 // $Source: /cvsroot/boost/boost/boost/mpl/same_as.hpp,v $

 // $Date: 2004/09/02 15:40:42 $

 // $Revision: 1.6 $

 #include <boost/mpl/not.hpp>

 #include <boost/mpl/aux_/lambda_spec.hpp>

 #include <boost/mpl/aux_/config/forwarding.hpp>

 #include <boost/type_traits/is_same.hpp>

 namespace boost { namespace mpl {

 template< typename T1 >

 struct same_as

 {

     template< typename T2 > struct apply

 #if !defined(BOOST_MPL_CFG_NO_NESTED_FORWARDING)

         : is_same<T1,T2>

     {

 #else

     {

         typedef typename is_same<T1,T2>::type type;

 #endif

     };

 };

 template< typename T1 >

 struct not_same_as

 {

     template< typename T2 > struct apply

 #if !defined(BOOST_MPL_CFG_NO_NESTED_FORWARDING)

         : not_< is_same<T1,T2> >

     {

 #else

     {

         typedef typename not_< is_same<T1,T2> >::type type;

 #endif

     };

 };

 }}

 #endif // BOOST_MPL_SAME_AS_HPP_INCLUDED