1 2 // Copyright Aleksey Gurtovoy 2000-2004 3 // Copyright Jaap Suter 2003 4 // 5 // Distributed under the Boost Software License, Version 1.0. 6 // (See accompanying file LICENSE_1_0.txt or copy at 7 // http://www.boost.org/LICENSE_1_0.txt) 8 // 9 10 // Preprocessed version of "boost/mpl/shift_right.hpp" header 11 // -- DO NOT modify by hand! 12 13 namespace boost { namespace mpl { 14 15 template< 16 typename Tag1 17 , typename Tag2 18 19 , BOOST_MPL_AUX_NTTP_DECL(int, tag1_) = BOOST_MPL_AUX_MSVC_VALUE_WKND(Tag1)::value 20 , BOOST_MPL_AUX_NTTP_DECL(int, tag2_) = BOOST_MPL_AUX_MSVC_VALUE_WKND(Tag2)::value 21 > 22 struct shift_right_impl 23 : if_c< 24 ( tag1_ > tag2_ ) 25 , aux::cast2nd_impl< shift_right_impl< Tag1,Tag1 >,Tag1, Tag2 > 26 , aux::cast1st_impl< shift_right_impl< Tag2,Tag2 >,Tag1, Tag2 > 27 >::type 28 { 29 }; 30 31 /// for Digital Mars C++/compilers with no CTPS/TTP support 32 template<> struct shift_right_impl< na,na > 33 { 34 template< typename U1, typename U2 > struct apply 35 { 36 typedef apply type; 37 BOOST_STATIC_CONSTANT(int, value = 0); 38 }; 39 }; 40 41 template<> struct shift_right_impl< na,integral_c_tag > 42 { 43 template< typename U1, typename U2 > struct apply 44 { 45 typedef apply type; 46 BOOST_STATIC_CONSTANT(int, value = 0); 47 }; 48 }; 49 50 template<> struct shift_right_impl< integral_c_tag,na > 51 { 52 template< typename U1, typename U2 > struct apply 53 { 54 typedef apply type; 55 BOOST_STATIC_CONSTANT(int, value = 0); 56 }; 57 }; 58 59 template< typename T > struct shift_right_tag 60 : tag< T,na > 61 { 62 }; 63 64 template< 65 typename BOOST_MPL_AUX_NA_PARAM(N1) 66 , typename BOOST_MPL_AUX_NA_PARAM(N2) 67 > 68 struct shift_right 69 : aux::msvc_eti_base< typename apply_wrap2< 70 shift_right_impl< 71 typename shift_right_tag<N1>::type 72 , typename shift_right_tag<N2>::type 73 > 74 , N1 75 , N2 76 >::type >::type 77 78 { 79 BOOST_MPL_AUX_LAMBDA_SUPPORT(2, shift_right, (N1, N2)) 80 81 }; 82 83 BOOST_MPL_AUX_NA_SPEC2(2, 2, shift_right) 84 85 }} 86 87 namespace boost { namespace mpl { 88 89 namespace aux { 90 template< typename T, typename Shift, T n, Shift s > 91 struct shift_right_wknd 92 { 93 BOOST_STATIC_CONSTANT(T, value = (n >> s)); 94 typedef integral_c< T,value > type; 95 }; 96 97 } 98 99 template<> 100 struct shift_right_impl< integral_c_tag,integral_c_tag > 101 { 102 template< typename N, typename S > struct apply 103 : aux::shift_right_wknd< 104 typename N::value_type 105 , typename S::value_type 106 , N::value 107 , S::value 108 >::type 109 110 { 111 }; 112 }; 113 114 }} 115