ext-boost/boost/mpl/aux_/preprocessed/no_ttp/minus.hpp
2014-12-07 23:50:51 +01:00

157 lines
3.2 KiB
C++

// 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
>
struct minus_impl
: if_c<
( BOOST_MPL_AUX_NESTED_VALUE_WKND(int, Tag1)
> BOOST_MPL_AUX_NESTED_VALUE_WKND(int, 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< typename Tag > struct minus_impl< na,Tag >
{
template< typename U1, typename U2 > struct apply
{
typedef apply type;
BOOST_STATIC_CONSTANT(int, value = 0);
};
};
template< typename Tag > struct minus_impl< 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;
};
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
: minus< minus< minus< minus< N1,N2 >, N3>, N4>, N5>
{
BOOST_MPL_AUX_LAMBDA_SUPPORT(
5
, minus
, ( N1, N2, N3, N4, N5 )
)
};
template<
typename N1, typename N2, typename N3, typename N4
>
struct minus< N1,N2,N3,N4,na >
: minus< minus< minus< N1,N2 >, N3>, N4>
{
BOOST_MPL_AUX_LAMBDA_SUPPORT_SPEC(
5
, minus
, ( N1, N2, N3, N4, na )
)
};
template<
typename N1, typename N2, typename N3
>
struct minus< N1,N2,N3,na,na >
: minus< minus< N1,N2 >, N3>
{
BOOST_MPL_AUX_LAMBDA_SUPPORT_SPEC(
5
, minus
, ( N1, N2, N3, na, na )
)
};
template<
typename N1, typename N2
>
struct minus< N1,N2,na,na,na >
: minus_impl<
typename minus_tag<N1>::type
, typename minus_tag<N2>::type
>::template apply< N1,N2 >::type
{
BOOST_MPL_AUX_LAMBDA_SUPPORT_SPEC(
5
, minus
, ( N1, N2, na, na, na )
)
};
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
{
};
};
}}