98 lines
2.1 KiB
C++
98 lines
2.1 KiB
C++
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// Copyright Aleksey Gurtovoy 2000-2004
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// Copyright Jaap Suter 2003
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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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// Preprocessed version of "boost/mpl/shift_left.hpp" header
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// -- DO NOT modify by hand!
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namespace boost { namespace mpl {
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template<
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typename Tag1
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, typename Tag2
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>
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struct shift_left_impl
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: if_c<
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( BOOST_MPL_AUX_NESTED_VALUE_WKND(int, Tag1)
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> BOOST_MPL_AUX_NESTED_VALUE_WKND(int, Tag2)
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)
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, aux::cast2nd_impl< shift_left_impl< Tag1,Tag1 >,Tag1, Tag2 >
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, aux::cast1st_impl< shift_left_impl< Tag2,Tag2 >,Tag1, Tag2 >
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>::type
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{
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};
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/// for Digital Mars C++/compilers with no CTPS/TTP support
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template<> struct shift_left_impl< na,na >
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{
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template< typename U1, typename U2 > struct apply
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{
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typedef apply type;
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BOOST_STATIC_CONSTANT(int, value = 0);
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};
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};
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template< typename Tag > struct shift_left_impl< na,Tag >
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{
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template< typename U1, typename U2 > struct apply
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{
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typedef apply type;
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BOOST_STATIC_CONSTANT(int, value = 0);
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};
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};
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template< typename Tag > struct shift_left_impl< Tag,na >
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{
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template< typename U1, typename U2 > struct apply
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{
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typedef apply type;
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BOOST_STATIC_CONSTANT(int, value = 0);
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};
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};
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template< typename T > struct shift_left_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(N1)
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, typename BOOST_MPL_AUX_NA_PARAM(N2)
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>
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struct shift_left
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: shift_left_impl<
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typename shift_left_tag<N1>::type
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, typename shift_left_tag<N2>::type
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>::template apply< N1,N2 >::type
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{
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};
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BOOST_MPL_AUX_NA_SPEC2(2, 2, shift_left)
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}}
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namespace boost { namespace mpl {
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template<>
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struct shift_left_impl< integral_c_tag,integral_c_tag >
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{
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template< typename N, typename S > struct apply
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: integral_c<
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typename N::value_type
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, ( BOOST_MPL_AUX_VALUE_WKND(N)::value
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<< BOOST_MPL_AUX_VALUE_WKND(S)::value
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)
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>
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{
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};
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};
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}}
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