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1 | // Boost.Units - A C++ library for zero-overhead dimensional analysis and |
2 | // unit/quantity manipulation and conversion | |
3 | // | |
4 | // Copyright (C) 2003-2008 Matthias Christian Schabel | |
5 | // Copyright (C) 2008 Steven Watanabe | |
6 | // | |
7 | // Distributed under the Boost Software License, Version 1.0. (See | |
8 | // accompanying file LICENSE_1_0.txt or copy at | |
9 | // http://www.boost.org/LICENSE_1_0.txt) | |
10 | ||
11 | #ifndef BOOST_UNITS_GET_DIMENSION_HPP | |
12 | #define BOOST_UNITS_GET_DIMENSION_HPP | |
13 | ||
14 | /// | |
15 | /// \file | |
16 | /// \brief Get the dimension of a unit, absolute unit and quantity. | |
17 | /// \details | |
18 | /// | |
19 | ||
20 | #include <boost/units/units_fwd.hpp> | |
21 | ||
22 | namespace boost { | |
23 | ||
24 | namespace units { | |
25 | ||
26 | template<class T> | |
27 | struct get_dimension {}; | |
28 | ||
29 | /// Get the dimension of a unit. | |
30 | template<class Dim,class System> | |
31 | struct get_dimension< unit<Dim,System> > | |
32 | { | |
33 | typedef Dim type; | |
34 | }; | |
35 | ||
36 | /// Get the dimension of an absolute unit. | |
37 | template<class Unit> | |
38 | struct get_dimension< absolute<Unit> > | |
39 | { | |
40 | typedef typename get_dimension<Unit>::type type; | |
41 | }; | |
42 | ||
43 | /// Get the dimension of a quantity. | |
44 | template<class Unit,class Y> | |
45 | struct get_dimension< quantity<Unit,Y> > | |
46 | { | |
47 | typedef typename get_dimension<Unit>::type type; | |
48 | }; | |
49 | ||
50 | } // namespace units | |
51 | ||
52 | } // namespace boost | |
53 | ||
54 | #endif // BOOST_UNITS_GET_DIMENSION_HPP |