preprocessed/msvc70/shift_right.hpp

0001
0002 // Copyright Aleksey Gurtovoy 2000-2004
0003 // Copyright Jaap Suter 2003
0004 //
0005 // Distributed under the Boost Software License, Version 1.0.
0006 // (See accompanying file LICENSE_1_0.txt or copy at
0007 // http://www.boost.org/LICENSE_1_0.txt)
0008 //
0009
0010 // Preprocessed version of "boost/mpl/shift_right.hpp" header
0011 // -- DO NOT modify by hand!
0012
0013 namespace boost { namespace mpl {
0014
0015 template<
0016       typename Tag1
0017     , typename Tag2
0018
0019     , BOOST_MPL_AUX_NTTP_DECL(int, tag1_)  = BOOST_MPL_AUX_MSVC_VALUE_WKND(Tag1)::value
0020     , BOOST_MPL_AUX_NTTP_DECL(int, tag2_)  = BOOST_MPL_AUX_MSVC_VALUE_WKND(Tag2)::value
0021     >
0022 struct shift_right_impl
0023     : if_c<
0024           ( tag1_ > tag2_ )
0025         , aux::cast2nd_impl< shift_right_impl< Tag1,Tag1 >,Tag1, Tag2 >
0026         , aux::cast1st_impl< shift_right_impl< Tag2,Tag2 >,Tag1, Tag2 >
0027         >::type
0028 {
0029 };
0030
0031 /// for Digital Mars C++/compilers with no CTPS/TTP support
0032 template<> struct shift_right_impl< na,na >
0033 {
0034     template< typename U1, typename U2 > struct apply
0035     {
0036         typedef apply type;
0037         BOOST_STATIC_CONSTANT(int, value  = 0);
0038     };
0039 };
0040
0041 template<> struct shift_right_impl< na,integral_c_tag >
0042 {
0043     template< typename U1, typename U2 > struct apply
0044     {
0045         typedef apply type;
0046         BOOST_STATIC_CONSTANT(int, value  = 0);
0047     };
0048 };
0049
0050 template<> struct shift_right_impl< integral_c_tag,na >
0051 {
0052     template< typename U1, typename U2 > struct apply
0053     {
0054         typedef apply type;
0055         BOOST_STATIC_CONSTANT(int, value  = 0);
0056     };
0057 };
0058
0059 template< typename T > struct shift_right_tag
0060     : tag< T,na >
0061 {
0062 };
0063
0064 template<
0065       typename BOOST_MPL_AUX_NA_PARAM(N1)
0066     , typename BOOST_MPL_AUX_NA_PARAM(N2)
0067     >
0068 struct shift_right
0069     : aux::msvc_eti_base< typename apply_wrap2<
0070           shift_right_impl<
0071               typename shift_right_tag<N1>::type
0072             , typename shift_right_tag<N2>::type
0073             >
0074         , N1
0075         , N2
0076         >::type >::type
0077
0078 {
0079     BOOST_MPL_AUX_LAMBDA_SUPPORT(2, shift_right, (N1, N2))
0080
0081 };
0082
0083 BOOST_MPL_AUX_NA_SPEC2(2, 2, shift_right)
0084
0085 }}
0086
0087 namespace boost { namespace mpl {
0088
0089 namespace aux {
0090 template< typename T, typename Shift, T n, Shift s >
0091 struct shift_right_wknd
0092 {
0093     BOOST_STATIC_CONSTANT(T, value  = (n >> s));
0094     typedef integral_c< T,value > type;
0095 };
0096
0097 }
0098
0099 template<>
0100 struct shift_right_impl< integral_c_tag,integral_c_tag >
0101 {
0102     template< typename N, typename S > struct apply
0103         : aux::shift_right_wknd<
0104               typename N::value_type
0105             , typename S::value_type
0106             , N::value
0107             , S::value
0108             >::type
0109
0110     {
0111     };
0112 };
0113
0114 }}