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// 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)
//
// Preprocessed version of "boost/mpl/minus.hpp" header
// -- DO NOT modify by hand!
namespace boost { namespace mpl {
template<
typename Tag1
, typename Tag2
, BOOST_MPL_AUX_NTTP_DECL(int, tag1_) = BOOST_MPL_AUX_MSVC_VALUE_WKND(Tag1)::value
, BOOST_MPL_AUX_NTTP_DECL(int, tag2_) = BOOST_MPL_AUX_MSVC_VALUE_WKND(Tag2)::value
>
struct minus_impl
: if_c<
( tag1_ > tag2_ )
, aux::cast2nd_impl< minus_impl< Tag1,Tag1 >,Tag1, Tag2 >
, aux::cast1st_impl< minus_impl< Tag2,Tag2 >,Tag1, Tag2 >
>::type
{
};
/// for Digital Mars C++/compilers with no CTPS/TTP support
template<> struct minus_impl< na,na >
{
template< typename U1, typename U2 > struct apply
{
typedef apply type;
BOOST_STATIC_CONSTANT(int, value = 0);
};
};
template<> struct minus_impl< na,integral_c_tag >
{
template< typename U1, typename U2 > struct apply
{
typedef apply type;
BOOST_STATIC_CONSTANT(int, value = 0);
};
};
template<> struct minus_impl< integral_c_tag,na >
{
template< typename U1, typename U2 > struct apply
{
typedef apply type;
BOOST_STATIC_CONSTANT(int, value = 0);
};
};
template< typename T > struct minus_tag
{
typedef typename T::tag type;
};
/// forward declaration
template<
typename BOOST_MPL_AUX_NA_PARAM(N1)
, typename BOOST_MPL_AUX_NA_PARAM(N2)
>
struct minus2;
template<
typename BOOST_MPL_AUX_NA_PARAM(N1)
, typename BOOST_MPL_AUX_NA_PARAM(N2)
, typename N3 = na, typename N4 = na, typename N5 = na
>
struct minus
: if_<
is_na<N3>
, minus2< N1,N2 >
, minus<
minus2< N1,N2 >
, N3, N4, N5
>
>::type
{
BOOST_MPL_AUX_LAMBDA_SUPPORT(
5
, minus
, ( N1, N2, N3, N4, N5 )
)
};
template<
typename N1
, typename N2
>
struct minus2
: aux::msvc_eti_base< typename apply_wrap2<
minus_impl<
typename minus_tag<N1>::type
, typename minus_tag<N2>::type
>
, N1
, N2
>::type >::type
{
BOOST_MPL_AUX_LAMBDA_SUPPORT(2, minus2, (N1, N2))
};
BOOST_MPL_AUX_NA_SPEC2(2, 5, minus)
}}
namespace boost { namespace mpl {
namespace aux {
template< typename T, T n1, T n2 >
struct minus_wknd
{
BOOST_STATIC_CONSTANT(T, value = (n1 - n2));
typedef integral_c< T,value > type;
};
}
template<>
struct minus_impl< integral_c_tag,integral_c_tag >
{
template< typename N1, typename N2 > struct apply
: aux::minus_wknd<
typename aux::largest_int<
typename N1::value_type
, typename N2::value_type
>::type
, N1::value
, N2::value
>::type
{
};
};
}}
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