ceph/src/boost/libs/compute/include/boost/compute/type_traits/make_vector_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_MAKE_VECTOR_TYPE_HPP
  12 #define BOOST_COMPUTE_TYPE_TRAITS_MAKE_VECTOR_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 which returns a vector type for \p Scalar with \p Size.
  22 ///
  23 /// For example,
  24 /// \code
  25 /// make_vector_type<int, 2>::type == int2_
  26 /// make_vector_type<float, 4>::type == float4_
  27 /// \endcode
  28 ///
  29 /// \see is_vector_type
  30 template<class Scalar, size_t Size>
  31 struct make_vector_type
  32 {
  33 };
  34
  35 /// \internal_
  36 template<class Scalar>
  37 struct make_vector_type<Scalar, 1>
  38 {
  39     typedef Scalar type;
  40 };
  41
  42 /// \internal_
  43 #define BOOST_COMPUTE_DECLARE_MAKE_VECTOR_TYPE_FUNCTION(scalar, size) \
  44     template<> \
  45     struct make_vector_type<BOOST_PP_CAT(scalar, _), size> \
  46     { \
  47         typedef BOOST_PP_CAT(BOOST_PP_CAT(scalar, size), _) type; \
  48     };
  49
  50 /// \internal_
  51 #define BOOST_COMPUTE_DECLARE_MAKE_VECTOR_TYPE_FUNCTIONS(scalar) \
  52     BOOST_COMPUTE_DECLARE_MAKE_VECTOR_TYPE_FUNCTION(scalar, 2) \
  53     BOOST_COMPUTE_DECLARE_MAKE_VECTOR_TYPE_FUNCTION(scalar, 4) \
  54     BOOST_COMPUTE_DECLARE_MAKE_VECTOR_TYPE_FUNCTION(scalar, 8) \
  55     BOOST_COMPUTE_DECLARE_MAKE_VECTOR_TYPE_FUNCTION(scalar, 16)
  56
  57 BOOST_COMPUTE_DECLARE_MAKE_VECTOR_TYPE_FUNCTIONS(char)
  58 BOOST_COMPUTE_DECLARE_MAKE_VECTOR_TYPE_FUNCTIONS(uchar)
  59 BOOST_COMPUTE_DECLARE_MAKE_VECTOR_TYPE_FUNCTIONS(short)
  60 BOOST_COMPUTE_DECLARE_MAKE_VECTOR_TYPE_FUNCTIONS(ushort)
  61 BOOST_COMPUTE_DECLARE_MAKE_VECTOR_TYPE_FUNCTIONS(int)
  62 BOOST_COMPUTE_DECLARE_MAKE_VECTOR_TYPE_FUNCTIONS(uint)
  63 BOOST_COMPUTE_DECLARE_MAKE_VECTOR_TYPE_FUNCTIONS(long)
  64 BOOST_COMPUTE_DECLARE_MAKE_VECTOR_TYPE_FUNCTIONS(ulong)
  65 BOOST_COMPUTE_DECLARE_MAKE_VECTOR_TYPE_FUNCTIONS(float)
  66 BOOST_COMPUTE_DECLARE_MAKE_VECTOR_TYPE_FUNCTIONS(double)
  67
  68 } // end compute namespace
  69 } // end boost namespace
  70
  71 #endif // BOOST_COMPUTE_TYPE_TRAITS_MAKE_VECTOR_TYPE_HPP