author | Jon Chatten |
Thu, 10 Dec 2009 15:35:48 +0000 | |
branch | wip |
changeset 61 | f520dfd22025 |
parent 0 | 044383f39525 |
permissions | -rw-r--r-- |
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#ifndef BOOST_MPL_NEGATE_HPP_INCLUDED |
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#define BOOST_MPL_NEGATE_HPP_INCLUDED |
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// Copyright Aleksey Gurtovoy 2000-2004 |
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// |
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// Distributed under the Boost Software License, Version 1.0. |
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// (See accompanying file LICENSE_1_0.txt or copy at |
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// http://www.boost.org/LICENSE_1_0.txt) |
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// |
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// See http://www.boost.org/libs/mpl for documentation. |
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// $Id: negate.hpp 49267 2008-10-11 06:19:02Z agurtovoy $ |
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// $Date: 2008-10-11 02:19:02 -0400 (Sat, 11 Oct 2008) $ |
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// $Revision: 49267 $ |
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#include <boost/mpl/integral_c.hpp> |
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#include <boost/mpl/aux_/msvc_eti_base.hpp> |
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#include <boost/mpl/aux_/na_spec.hpp> |
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#include <boost/mpl/aux_/lambda_support.hpp> |
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#include <boost/mpl/aux_/config/eti.hpp> |
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#include <boost/mpl/aux_/config/integral.hpp> |
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#include <boost/mpl/aux_/config/static_constant.hpp> |
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namespace boost { namespace mpl { |
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template< typename Tag > struct negate_impl; |
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template< typename T > struct negate_tag |
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{ |
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typedef typename T::tag type; |
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}; |
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template< |
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typename BOOST_MPL_AUX_NA_PARAM(N) |
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> |
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struct negate |
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#if !defined(BOOST_MPL_CFG_MSVC_ETI_BUG) |
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: negate_impl< |
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typename negate_tag<N>::type |
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>::template apply<N>::type |
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#else |
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: aux::msvc_eti_base< typename apply_wrap1< |
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negate_impl< typename negate_tag<N>::type > |
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, N |
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>::type >::type |
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#endif |
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{ |
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BOOST_MPL_AUX_LAMBDA_SUPPORT(1, negate, (N)) |
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}; |
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BOOST_MPL_AUX_NA_SPEC(1, negate) |
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#if defined(BOOST_MPL_CFG_NO_NESTED_VALUE_ARITHMETIC) |
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namespace aux { |
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template< typename T, T n > struct negate_wknd |
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{ |
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BOOST_STATIC_CONSTANT(T, value = -n); |
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typedef integral_c<T,value> type; |
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}; |
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} |
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#endif |
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template<> |
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struct negate_impl<integral_c_tag> |
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{ |
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#if defined(BOOST_MPL_CFG_NO_NESTED_VALUE_ARITHMETIC) |
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template< typename N > struct apply |
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: aux::negate_wknd< typename N::value_type, N::value > |
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#else |
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template< typename N > struct apply |
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: integral_c< typename N::value_type, (-N::value) > |
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#endif |
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{ |
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}; |
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}; |
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}} |
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#endif // BOOST_MPL_NEGATE_HPP_INCLUDED |