ceph/src/boost/libs/compute/include/boost/compute/type_traits/scalar_type.hpp

   1 //---------------------------------------------------------------------------//
   2 // Copyright (c) 2013 Kyle Lutz <kyle.r.lutz@gmail.com>
   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 // See http://boostorg.github.com/compute for more information.
   9 //---------------------------------------------------------------------------//
  10
  11 #ifndef BOOST_COMPUTE_TYPE_TRAITS_SCALAR_TYPE_HPP
  12 #define BOOST_COMPUTE_TYPE_TRAITS_SCALAR_TYPE_HPP
  13
  14 #include <boost/preprocessor/cat.hpp>
  15
  16 #include <boost/compute/types/fundamental.hpp>
  17
  18 namespace boost {
  19 namespace compute {
  20
  21 /// Meta-function returning the scalar type for a vector type.
  22 ///
  23 /// For example,
  24 /// \code
  25 /// scalar_type<float4_>::type == float
  26 /// \endcode
  27 template<class Vector>
  28 struct scalar_type
  29 {
  30     /// \internal_
  31     typedef void type;
  32 };
  33
  34 /// \internal_
  35 #define BOOST_COMPUTE_DECLARE_SCALAR_TYPE_FUNCTION(scalar) \
  36     template<> \
  37     struct scalar_type<BOOST_PP_CAT(scalar, _)> \
  38     { \
  39         typedef BOOST_PP_CAT(scalar, _) type; \
  40     };
  41
  42 /// \internal_
  43 #define BOOST_COMPUTE_DECLARE_VECTOR_SCALAR_TYPE_FUNCTION(scalar, size) \
  44     template<> \
  45     struct scalar_type<BOOST_PP_CAT(BOOST_PP_CAT(scalar, size), _)> \
  46     { \
  47         typedef BOOST_PP_CAT(scalar, _) type; \
  48     };
  49
  50 /// \internal_
  51 #define BOOST_COMPUTE_DECLARE_SCALAR_TYPE_FUNCTIONS(scalar) \
  52     BOOST_COMPUTE_DECLARE_SCALAR_TYPE_FUNCTION(scalar) \
  53     BOOST_COMPUTE_DECLARE_VECTOR_SCALAR_TYPE_FUNCTION(scalar, 2) \
  54     BOOST_COMPUTE_DECLARE_VECTOR_SCALAR_TYPE_FUNCTION(scalar, 4) \
  55     BOOST_COMPUTE_DECLARE_VECTOR_SCALAR_TYPE_FUNCTION(scalar, 8) \
  56     BOOST_COMPUTE_DECLARE_VECTOR_SCALAR_TYPE_FUNCTION(scalar, 16)
  57
  58 BOOST_COMPUTE_DECLARE_SCALAR_TYPE_FUNCTIONS(char)
  59 BOOST_COMPUTE_DECLARE_SCALAR_TYPE_FUNCTIONS(uchar)
  60 BOOST_COMPUTE_DECLARE_SCALAR_TYPE_FUNCTIONS(short)
  61 BOOST_COMPUTE_DECLARE_SCALAR_TYPE_FUNCTIONS(ushort)
  62 BOOST_COMPUTE_DECLARE_SCALAR_TYPE_FUNCTIONS(int)
  63 BOOST_COMPUTE_DECLARE_SCALAR_TYPE_FUNCTIONS(uint)
  64 BOOST_COMPUTE_DECLARE_SCALAR_TYPE_FUNCTIONS(long)
  65 BOOST_COMPUTE_DECLARE_SCALAR_TYPE_FUNCTIONS(ulong)
  66 BOOST_COMPUTE_DECLARE_SCALAR_TYPE_FUNCTIONS(float)
  67 BOOST_COMPUTE_DECLARE_SCALAR_TYPE_FUNCTIONS(double)
  68
  69 } // end compute namespace
  70 } // end boost namespace
  71
  72 #endif // BOOST_COMPUTE_TYPE_TRAITS_SCALAR_TYPE_HPP