1 2 #ifndef BOOST_MPL_SAME_AS_HPP_INCLUDED 3 #define BOOST_MPL_SAME_AS_HPP_INCLUDED 4 5 // Copyright Aleksey Gurtovoy 2000-2004 6 // 7 // Distributed under the Boost Software License, Version 1.0. 8 // (See accompanying file LICENSE_1_0.txt or copy at 9 // http://www.boost.org/LICENSE_1_0.txt) 10 // 11 // See http://www.boost.org/libs/mpl for documentation. 12 13 // $Id$ 14 // $Date$ 15 // $Revision$ 16 17 #include <boost/mpl/not.hpp> 18 #include <boost/mpl/aux_/lambda_spec.hpp> 19 #include <boost/mpl/aux_/config/forwarding.hpp> 20 21 #include <boost/type_traits/is_same.hpp> 22 23 namespace boost { namespace mpl { 24 25 template< typename T1 > 26 struct same_as 27 { 28 template< typename T2 > struct apply 29 #if !defined(BOOST_MPL_CFG_NO_NESTED_FORWARDING) 30 : is_same<T1,T2> 31 { 32 #else 33 { 34 typedef typename is_same<T1,T2>::type type; 35 #endif 36 }; 37 }; 38 39 template< typename T1 > 40 struct not_same_as 41 { 42 template< typename T2 > struct apply 43 #if !defined(BOOST_MPL_CFG_NO_NESTED_FORWARDING) 44 : not_< is_same<T1,T2> > 45 { 46 #else 47 { 48 typedef typename not_< is_same<T1,T2> >::type type; 49 #endif 50 }; 51 }; 52 53 }} 54 55 #endif // BOOST_MPL_SAME_AS_HPP_INCLUDED 56