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1 | /* |
2 | [auto_generated] | |
3 | boost/numeric/odeint/util/is_resizeable.hpp | |
4 | ||
5 | [begin_description] | |
6 | Metafunction to determine if a state type can resized. For usage in the steppers. | |
7 | [end_description] | |
8 | ||
9 | Copyright 2011-2012 Karsten Ahnert | |
10 | Copyright 2011 Mario Mulansky | |
11 | ||
12 | Distributed under the Boost Software License, Version 1.0. | |
13 | (See accompanying file LICENSE_1_0.txt or | |
14 | copy at http://www.boost.org/LICENSE_1_0.txt) | |
15 | */ | |
16 | ||
17 | ||
18 | #ifndef BOOST_NUMERIC_ODEINT_UTIL_IS_RESIZEABLE_HPP_INCLUDED | |
19 | #define BOOST_NUMERIC_ODEINT_UTIL_IS_RESIZEABLE_HPP_INCLUDED | |
20 | ||
21 | ||
22 | #include <vector> | |
23 | ||
24 | #include <boost/type_traits/integral_constant.hpp> | |
25 | #include <boost/type_traits/remove_reference.hpp> | |
26 | #include <boost/fusion/include/front.hpp> | |
27 | #include <boost/fusion/include/is_sequence.hpp> | |
28 | ||
29 | #include <boost/mpl/find_if.hpp> | |
30 | #include <boost/mpl/end.hpp> | |
31 | #include <boost/mpl/placeholders.hpp> | |
32 | #include <boost/mpl/if.hpp> | |
33 | #include <boost/type_traits/is_same.hpp> | |
34 | ||
35 | namespace boost { | |
36 | namespace numeric { | |
37 | namespace odeint { | |
38 | ||
39 | /* | |
40 | * by default any type is not resizable | |
41 | */ | |
42 | template< typename Container , typename Enabler = void > | |
43 | struct is_resizeable_sfinae : boost::false_type {}; | |
44 | ||
45 | template< typename Container > | |
46 | struct is_resizeable : is_resizeable_sfinae< Container > {}; | |
47 | ||
48 | ||
49 | ||
50 | /* | |
51 | * specialization for std::vector | |
52 | */ | |
53 | template< class V, class A > | |
54 | struct is_resizeable< std::vector< V , A > > : boost::true_type {}; | |
55 | ||
56 | ||
57 | /* | |
58 | * sfinae specialization for fusion sequences | |
59 | */ | |
60 | template< typename FusionSequence > | |
61 | struct is_resizeable_sfinae< | |
62 | FusionSequence , | |
63 | typename boost::enable_if< typename boost::fusion::traits::is_sequence< FusionSequence >::type >::type > | |
64 | { | |
65 | typedef typename boost::mpl::find_if< FusionSequence , is_resizeable< boost::mpl::_1 > >::type iter; | |
66 | typedef typename boost::mpl::end< FusionSequence >::type last; | |
67 | ||
68 | typedef typename boost::mpl::if_< boost::is_same< iter , last > , boost::false_type , boost::true_type >::type type; | |
69 | const static bool value = type::value; | |
70 | }; | |
71 | ||
72 | ||
73 | ||
74 | ||
75 | ||
76 | ||
77 | } // namespace odeint | |
78 | } // namespace numeric | |
79 | } // namespace boost | |
80 | ||
81 | ||
82 | ||
83 | #endif // BOOST_NUMERIC_ODEINT_UTIL_IS_RESIZEABLE_HPP_INCLUDED |