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[casparcg] / dependencies64 / boost / boost / mpl / max_element.hpp
1
2 #ifndef BOOST_MPL_MAX_ELEMENT_HPP_INCLUDED
3 #define BOOST_MPL_MAX_ELEMENT_HPP_INCLUDED
4
5 // Copyright Aleksey Gurtovoy 2000-2004
6 //
7 // Distributed under the Boost Software License, Version 1.0. 
8 // (See accompanying file LICENSE_1_0.txt or copy at 
9 // http://www.boost.org/LICENSE_1_0.txt)
10 //
11 // See http://www.boost.org/libs/mpl for documentation.
12
13 // $Id: max_element.hpp 49267 2008-10-11 06:19:02Z agurtovoy $
14 // $Date: 2008-10-11 02:19:02 -0400 (Sat, 11 Oct 2008) $
15 // $Revision: 49267 $
16
17 #include <boost/mpl/less.hpp>
18 #include <boost/mpl/iter_fold.hpp>
19 #include <boost/mpl/begin_end.hpp>
20 #include <boost/mpl/if.hpp>
21 #include <boost/mpl/deref.hpp>
22 #include <boost/mpl/apply.hpp>
23 #include <boost/mpl/aux_/common_name_wknd.hpp>
24 #include <boost/mpl/aux_/na_spec.hpp>
25
26 namespace boost { namespace mpl {
27
28 BOOST_MPL_AUX_COMMON_NAME_WKND(max_element)
29
30 namespace aux {
31
32 template< typename Predicate >
33 struct select_max
34 {
35     template< typename OldIterator, typename Iterator >
36     struct apply
37     {
38         typedef typename apply2<
39               Predicate
40             , typename deref<OldIterator>::type
41             , typename deref<Iterator>::type
42             >::type condition_;
43
44         typedef typename if_<
45               condition_
46             , Iterator
47             , OldIterator
48             >::type type;
49     };
50 };
51
52 } // namespace aux 
53
54
55 template<
56       typename BOOST_MPL_AUX_NA_PARAM(Sequence)
57     , typename Predicate = less<_,_>
58     >
59 struct max_element
60     : iter_fold<
61           Sequence
62         , typename begin<Sequence>::type
63         , protect< aux::select_max<Predicate> >
64         >
65 {
66 };
67
68 BOOST_MPL_AUX_NA_SPEC(1, max_element)
69
70 }}
71
72 #endif // BOOST_MPL_MAX_ELEMENT_HPP_INCLUDED