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1 | /*-----------------------------------------------------------------------------+ |
2 | Copyright (c) 2010-2010: Joachim Faulhaber | |
3 | +------------------------------------------------------------------------------+ | |
4 | Distributed under the Boost Software License, Version 1.0. | |
5 | (See accompanying file LICENCE.txt or copy at | |
6 | http://www.boost.org/LICENSE_1_0.txt) | |
7 | +-----------------------------------------------------------------------------*/ | |
8 | #ifndef BOOST_ICL_CONCEPT_COMPARABLE_HPP_JOFA_100921 | |
9 | #define BOOST_ICL_CONCEPT_COMPARABLE_HPP_JOFA_100921 | |
10 | ||
11 | #include <boost/utility/enable_if.hpp> | |
12 | #include <boost/icl/type_traits/is_icl_container.hpp> | |
13 | ||
14 | namespace boost{ namespace icl | |
15 | { | |
16 | ||
17 | //============================================================================== | |
18 | //= Equivalences and Orderings<Comparable> | |
19 | //============================================================================== | |
20 | template<class Type> | |
21 | inline typename enable_if<is_icl_container<Type>, bool>::type | |
22 | operator != (const Type& left, const Type& right) | |
23 | { return !(left == right); } | |
24 | ||
25 | template<class Type> | |
26 | inline typename enable_if<is_icl_container<Type>, bool>::type | |
27 | operator > (const Type& left, const Type& right) | |
28 | { return right < left; } | |
29 | ||
30 | /** Partial ordering which is induced by Compare */ | |
31 | template<class Type> | |
32 | inline typename enable_if<is_icl_container<Type>, bool>::type | |
33 | operator <= (const Type& left, const Type& right) | |
34 | { return !(left > right); } | |
35 | ||
36 | template<class Type> | |
37 | inline typename enable_if<is_icl_container<Type>, bool>::type | |
38 | operator >= (const Type& left, const Type& right) | |
39 | { return !(left < right); } | |
40 | ||
41 | }} // namespace boost icl | |
42 | ||
43 | #endif | |
44 | ||
45 |