williamr@2: williamr@2: #ifndef BOOST_MPL_NEGATE_HPP_INCLUDED williamr@2: #define BOOST_MPL_NEGATE_HPP_INCLUDED williamr@2: williamr@2: // Copyright Aleksey Gurtovoy 2000-2004 williamr@2: // williamr@2: // Distributed under the Boost Software License, Version 1.0. williamr@2: // (See accompanying file LICENSE_1_0.txt or copy at williamr@2: // http://www.boost.org/LICENSE_1_0.txt) williamr@2: // williamr@2: // See http://www.boost.org/libs/mpl for documentation. williamr@2: williamr@2: // $Source: /cvsroot/boost/boost/boost/mpl/negate.hpp,v $ williamr@2: // $Date: 2004/09/07 09:06:08 $ williamr@2: // $Revision: 1.4 $ williamr@2: williamr@2: #include williamr@2: #include williamr@2: #include williamr@2: #include williamr@2: #include williamr@2: #include williamr@2: #include williamr@2: williamr@2: namespace boost { namespace mpl { williamr@2: williamr@2: template< typename Tag > struct negate_impl; williamr@2: williamr@2: template< typename T > struct negate_tag williamr@2: { williamr@2: typedef typename T::tag type; williamr@2: }; williamr@2: williamr@2: template< williamr@2: typename BOOST_MPL_AUX_NA_PARAM(N) williamr@2: > williamr@2: struct negate williamr@2: #if !defined(BOOST_MPL_CFG_MSVC_ETI_BUG) williamr@2: : negate_impl< williamr@2: typename negate_tag::type williamr@2: >::template apply::type williamr@2: #else williamr@2: : aux::msvc_eti_base< typename apply_wrap1< williamr@2: negate_impl< typename negate_tag::type > williamr@2: , N williamr@2: >::type >::type williamr@2: #endif williamr@2: { williamr@2: BOOST_MPL_AUX_LAMBDA_SUPPORT(1, negate, (N)) williamr@2: }; williamr@2: williamr@2: BOOST_MPL_AUX_NA_SPEC(1, negate) williamr@2: williamr@2: williamr@2: #if defined(BOOST_MPL_CFG_NO_NESTED_VALUE_ARITHMETIC) williamr@2: namespace aux { williamr@2: template< typename T, T n > struct negate_wknd williamr@2: { williamr@2: BOOST_STATIC_CONSTANT(T, value = -n); williamr@2: typedef integral_c type; williamr@2: }; williamr@2: } williamr@2: #endif williamr@2: williamr@2: template<> williamr@2: struct negate_impl williamr@2: { williamr@2: #if defined(BOOST_MPL_CFG_NO_NESTED_VALUE_ARITHMETIC) williamr@2: template< typename N > struct apply williamr@2: : aux::negate_wknd< typename N::value_type, N::value > williamr@2: #else williamr@2: template< typename N > struct apply williamr@2: : integral_c< typename N::value_type, (-N::value) > williamr@2: #endif williamr@2: { williamr@2: }; williamr@2: }; williamr@2: williamr@2: }} williamr@2: williamr@2: #endif // BOOST_MPL_NEGATE_HPP_INCLUDED