less.hpp 2.2 KB

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  1. // Copyright Aleksey Gurtovoy 2000-2004
  2. //
  3. // Distributed under the Boost Software License, Version 1.0.
  4. // (See accompanying file LICENSE_1_0.txt or copy at
  5. // http://www.boost.org/LICENSE_1_0.txt)
  6. //
  7. // Preprocessed version of "boost/mpl/less.hpp" header
  8. // -- DO NOT modify by hand!
  9. namespace boost { namespace mpl {
  10. template<
  11. typename Tag1
  12. , typename Tag2
  13. , BOOST_MPL_AUX_NTTP_DECL(int, tag1_) = BOOST_MPL_AUX_MSVC_VALUE_WKND(Tag1)::value
  14. , BOOST_MPL_AUX_NTTP_DECL(int, tag2_) = BOOST_MPL_AUX_MSVC_VALUE_WKND(Tag2)::value
  15. >
  16. struct less_impl
  17. : if_c<
  18. ( tag1_ > tag2_ )
  19. , aux::cast2nd_impl< less_impl< Tag1,Tag1 >,Tag1, Tag2 >
  20. , aux::cast1st_impl< less_impl< Tag2,Tag2 >,Tag1, Tag2 >
  21. >::type
  22. {
  23. };
  24. /// for Digital Mars C++/compilers with no CTPS/TTP support
  25. template<> struct less_impl< na,na >
  26. {
  27. template< typename U1, typename U2 > struct apply
  28. {
  29. typedef apply type;
  30. BOOST_STATIC_CONSTANT(int, value = 0);
  31. };
  32. };
  33. template<> struct less_impl< na,integral_c_tag >
  34. {
  35. template< typename U1, typename U2 > struct apply
  36. {
  37. typedef apply type;
  38. BOOST_STATIC_CONSTANT(int, value = 0);
  39. };
  40. };
  41. template<> struct less_impl< integral_c_tag,na >
  42. {
  43. template< typename U1, typename U2 > struct apply
  44. {
  45. typedef apply type;
  46. BOOST_STATIC_CONSTANT(int, value = 0);
  47. };
  48. };
  49. template< typename T > struct less_tag
  50. {
  51. typedef typename T::tag type;
  52. };
  53. template<
  54. typename BOOST_MPL_AUX_NA_PARAM(N1)
  55. , typename BOOST_MPL_AUX_NA_PARAM(N2)
  56. >
  57. struct less
  58. : aux::msvc_eti_base< typename apply_wrap2<
  59. less_impl<
  60. typename less_tag<N1>::type
  61. , typename less_tag<N2>::type
  62. >
  63. , N1
  64. , N2
  65. >::type >::type
  66. {
  67. BOOST_MPL_AUX_LAMBDA_SUPPORT(2, less, (N1, N2))
  68. };
  69. BOOST_MPL_AUX_NA_SPEC2(2, 2, less)
  70. }}
  71. namespace boost { namespace mpl {
  72. template<>
  73. struct less_impl< integral_c_tag,integral_c_tag >
  74. {
  75. template< typename N1, typename N2 > struct apply
  76. {
  77. BOOST_STATIC_CONSTANT(bool, value =
  78. ( BOOST_MPL_AUX_VALUE_WKND(N2)::value >
  79. BOOST_MPL_AUX_VALUE_WKND(N1)::value )
  80. );
  81. typedef bool_<value> type;
  82. };
  83. };
  84. }}