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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 |