src/thirdparty/boost_1_47_0/boost/mpl/aux_/preprocessed/bcc551/equal_to.hpp

   1
   2 // Copyright Aleksey Gurtovoy 2000-2004
   3 //
   4 // Distributed under the Boost Software License, Version 1.0.
   5 // (See accompanying file LICENSE_1_0.txt or copy at
   6 // http://www.boost.org/LICENSE_1_0.txt)
   7 //
   8
   9 // Preprocessed version of "boost/mpl/equal_to.hpp" header
  10 // -- DO NOT modify by hand!
  11
  12 namespace boost { namespace mpl {
  13
  14 template<
  15       typename Tag1
  16     , typename Tag2
  17     >
  18 struct equal_to_impl
  19     : if_c<
  20           ( BOOST_MPL_AUX_NESTED_VALUE_WKND(int, Tag1)
  21               > BOOST_MPL_AUX_NESTED_VALUE_WKND(int, Tag2)
  22             )
  23
  24         , aux::cast2nd_impl< equal_to_impl< Tag1,Tag1 >,Tag1, Tag2 >
  25         , aux::cast1st_impl< equal_to_impl< Tag2,Tag2 >,Tag1, Tag2 >
  26         >::type
  27 {
  28 };
  29
  30 /// for Digital Mars C++/compilers with no CTPS/TTP support
  31 template<> struct equal_to_impl< na,na >
  32 {
  33     template< typename U1, typename U2 > struct apply
  34     {
  35         typedef apply type;
  36         BOOST_STATIC_CONSTANT(int, value  = 0);
  37     };
  38 };
  39
  40 template< typename Tag > struct equal_to_impl< na,Tag >
  41 {
  42     template< typename U1, typename U2 > struct apply
  43     {
  44         typedef apply type;
  45         BOOST_STATIC_CONSTANT(int, value  = 0);
  46     };
  47 };
  48
  49 template< typename Tag > struct equal_to_impl< Tag,na >
  50 {
  51     template< typename U1, typename U2 > struct apply
  52     {
  53         typedef apply type;
  54         BOOST_STATIC_CONSTANT(int, value  = 0);
  55     };
  56 };
  57
  58 template< typename T > struct equal_to_tag
  59 {
  60     typedef typename T::tag type;
  61 };
  62
  63 template<
  64       typename BOOST_MPL_AUX_NA_PARAM(N1)
  65     , typename BOOST_MPL_AUX_NA_PARAM(N2)
  66     >
  67 struct equal_to
  68
  69     : equal_to_impl<
  70           typename equal_to_tag<N1>::type
  71         , typename equal_to_tag<N2>::type
  72         >::template apply< N1,N2 >::type
  73 {
  74     BOOST_MPL_AUX_LAMBDA_SUPPORT(2, equal_to, (N1, N2))
  75
  76 };
  77
  78 BOOST_MPL_AUX_NA_SPEC2(2, 2, equal_to)
  79
  80 }}
  81
  82 namespace boost { namespace mpl {
  83
  84 template<>
  85 struct equal_to_impl< integral_c_tag,integral_c_tag >
  86 {
  87     template< typename N1, typename N2 > struct apply
  88
  89         : bool_< ( BOOST_MPL_AUX_VALUE_WKND(N1)::value  == BOOST_MPL_AUX_VALUE_WKND(N2)::value ) >
  90     {
  91     };
  92 };
  93
  94 }}