82 lines
1.9 KiB
Plaintext
82 lines
1.9 KiB
Plaintext
|
|
#ifndef BOOST_MPL_NEGATE_HPP_INCLUDED
|
|
#define BOOST_MPL_NEGATE_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.
|
|
|
|
// $Id$
|
|
// $Date$
|
|
// $Revision$
|
|
|
|
#include <boost/mpl/integral_c.hpp>
|
|
#include <boost/mpl/aux_/msvc_eti_base.hpp>
|
|
#include <boost/mpl/aux_/na_spec.hpp>
|
|
#include <boost/mpl/aux_/lambda_support.hpp>
|
|
#include <boost/mpl/aux_/config/eti.hpp>
|
|
#include <boost/mpl/aux_/config/integral.hpp>
|
|
#include <boost/mpl/aux_/config/static_constant.hpp>
|
|
|
|
namespace boost { namespace mpl {
|
|
|
|
template< typename Tag > struct negate_impl;
|
|
|
|
template< typename T > struct negate_tag
|
|
{
|
|
typedef typename T::tag type;
|
|
};
|
|
|
|
template<
|
|
typename BOOST_MPL_AUX_NA_PARAM(N)
|
|
>
|
|
struct negate
|
|
#if !defined(BOOST_MPL_CFG_MSVC_ETI_BUG)
|
|
: negate_impl<
|
|
typename negate_tag<N>::type
|
|
>::template apply<N>::type
|
|
#else
|
|
: aux::msvc_eti_base< typename apply_wrap1<
|
|
negate_impl< typename negate_tag<N>::type >
|
|
, N
|
|
>::type >::type
|
|
#endif
|
|
{
|
|
BOOST_MPL_AUX_LAMBDA_SUPPORT(1, negate, (N))
|
|
};
|
|
|
|
BOOST_MPL_AUX_NA_SPEC(1, negate)
|
|
|
|
|
|
#if defined(BOOST_MPL_CFG_NO_NESTED_VALUE_ARITHMETIC)
|
|
namespace aux {
|
|
template< typename T, T n > struct negate_wknd
|
|
{
|
|
BOOST_STATIC_CONSTANT(T, value = -n);
|
|
typedef integral_c<T,value> type;
|
|
};
|
|
}
|
|
#endif
|
|
|
|
template<>
|
|
struct negate_impl<integral_c_tag>
|
|
{
|
|
#if defined(BOOST_MPL_CFG_NO_NESTED_VALUE_ARITHMETIC)
|
|
template< typename N > struct apply
|
|
: aux::negate_wknd< typename N::value_type, N::value >
|
|
#else
|
|
template< typename N > struct apply
|
|
: integral_c< typename N::value_type, (-N::value) >
|
|
#endif
|
|
{
|
|
};
|
|
};
|
|
|
|
}}
|
|
|
|
#endif // BOOST_MPL_NEGATE_HPP_INCLUDED
|