boost/boost/numeric/conversion/detail/numeric_cast_traits.hpp

   1 //
   2 //! Copyright (c) 2011
   3 //! Brandon Kohn
   4 //
   5 //  Distributed under the Boost Software License, Version 1.0. (See
   6 //  accompanying file LICENSE_1_0.txt or copy at
   7 //  http://www.boost.org/LICENSE_1_0.txt)
   8 //
   9 #if !defined(BOOST_NUMERIC_CONVERSION_DONT_USE_PREPROCESSED_FILES)
  10     #include <boost/numeric/conversion/detail/preprocessed/numeric_cast_traits.hpp>
  11 #else
  12 #if !BOOST_PP_IS_ITERATING
  13
  14     #include <boost/preprocessor/iteration/iterate.hpp>
  15     #include <boost/preprocessor/seq/elem.hpp>
  16     #include <boost/preprocessor/seq/size.hpp>
  17
  18     #if defined(__WAVE__) && defined(BOOST_NUMERIC_CONVERSION_CREATE_PREPROCESSED_FILES)
  19         #pragma wave option(preserve: 2, line: 0, output: "preprocessed/numeric_cast_traits.hpp")
  20     #endif
  21
  22 //
  23 //! Copyright (c) 2011
  24 //! Brandon Kohn
  25 //
  26 //  Distributed under the Boost Software License, Version 1.0. (See
  27 //  accompanying file LICENSE_1_0.txt or copy at
  28 //  http://www.boost.org/LICENSE_1_0.txt)
  29 //
  30     #if defined(__WAVE__) && defined(BOOST_NUMERIC_CONVERSION_CREATE_PREPROCESSED_FILES)
  31         #pragma wave option(preserve: 1)
  32     #endif
  33
  34     //! Generate the specializations for the built-in types.
  35     #if !defined( BOOST_NO_INT64_T )
  36         #define BOOST_NUMERIC_CONVERSION_BUILTIN_TYPES() \
  37                 (char)                                   \
  38                 (boost::int8_t)                          \
  39                 (boost::uint8_t)                         \
  40                 (boost::int16_t)                         \
  41                 (boost::uint16_t)                        \
  42                 (boost::int32_t)                         \
  43                 (boost::uint32_t)                        \
  44                 (boost::int64_t)                         \
  45                 (boost::uint64_t)                        \
  46                 (float)                                  \
  47                 (double)                                 \
  48                 (long double)                            \
  49         /***/
  50     #else
  51         #define BOOST_NUMERIC_CONVERSION_BUILTIN_TYPES() \
  52                 (char)                                   \
  53                 (boost::int8_t)                          \
  54                 (boost::uint8_t)                         \
  55                 (boost::int16_t)                         \
  56                 (boost::uint16_t)                        \
  57                 (boost::int32_t)                         \
  58                 (boost::uint32_t)                        \
  59                 (float)                                  \
  60                 (double)                                 \
  61                 (long double)                            \
  62         /***/
  63     #endif
  64
  65 namespace boost { namespace numeric {
  66
  67     #define BOOST_PP_ITERATION_PARAMS_1 (3, (0, BOOST_PP_DEC(BOOST_PP_SEQ_SIZE(BOOST_NUMERIC_CONVERSION_BUILTIN_TYPES())), <boost/numeric/conversion/detail/numeric_cast_traits.hpp>))
  68     #include BOOST_PP_ITERATE()
  69
  70 }}//namespace boost::numeric;
  71
  72     #if defined(__WAVE__) && defined(BOOST_NUMERIC_CONVERSION_CREATE_PREPROCESSED_FILES)
  73         #pragma wave option(output: null)
  74     #endif
  75
  76     #undef BOOST_NUMERIC_CONVERSION_BUILTIN_TYPES
  77
  78 #elif BOOST_PP_ITERATION_DEPTH() == 1
  79
  80    #define BOOST_PP_ITERATION_PARAMS_2 (3, (0, BOOST_PP_DEC(BOOST_PP_SEQ_SIZE(BOOST_NUMERIC_CONVERSION_BUILTIN_TYPES())), <boost/numeric/conversion/detail/numeric_cast_traits.hpp>))
  81    #include BOOST_PP_ITERATE()
  82
  83 #elif BOOST_PP_ITERATION_DEPTH() == 2
  84
  85     //! Generate default traits for the specified source and target.
  86     #define BOOST_NUMERIC_CONVERSION_A BOOST_PP_FRAME_ITERATION(1)
  87     #define BOOST_NUMERIC_CONVERSION_B BOOST_PP_FRAME_ITERATION(2)
  88
  89     template <>
  90     struct numeric_cast_traits
  91         <
  92             BOOST_PP_SEQ_ELEM(BOOST_NUMERIC_CONVERSION_A, BOOST_NUMERIC_CONVERSION_BUILTIN_TYPES())
  93           , BOOST_PP_SEQ_ELEM(BOOST_NUMERIC_CONVERSION_B, BOOST_NUMERIC_CONVERSION_BUILTIN_TYPES())
  94         >
  95     {
  96         typedef def_overflow_handler overflow_policy;
  97         typedef UseInternalRangeChecker range_checking_policy;
  98         typedef Trunc<BOOST_PP_SEQ_ELEM(BOOST_NUMERIC_CONVERSION_B, BOOST_NUMERIC_CONVERSION_BUILTIN_TYPES())> rounding_policy;
  99     };
 100
 101     #undef BOOST_NUMERIC_CONVERSION_A
 102     #undef BOOST_NUMERIC_CONVERSION_B
 103
 104 #endif//! Depth 2.
 105 #endif// BOOST_NUMERIC_CONVERSION_DONT_USE_PREPROCESSED_FILES