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1 | // Copyright Neil Groves 2009. Use, modification and |
2 | // distribution is subject to the Boost Software License, Version | |
3 | // 1.0. (See accompanying file LICENSE_1_0.txt or copy at | |
4 | // http://www.boost.org/LICENSE_1_0.txt) | |
5 | // | |
6 | // | |
7 | // For more information, see http://www.boost.org/libs/range/ | |
8 | // | |
9 | #ifndef BOOST_RANGE_ALGORITHM_BINARY_SEARCH_HPP_INCLUDED | |
10 | #define BOOST_RANGE_ALGORITHM_BINARY_SEARCH_HPP_INCLUDED | |
11 | ||
12 | #include <boost/concept_check.hpp> | |
13 | #include <boost/range/begin.hpp> | |
14 | #include <boost/range/end.hpp> | |
15 | #include <boost/range/concepts.hpp> | |
16 | #include <algorithm> | |
17 | ||
18 | namespace boost | |
19 | { | |
20 | namespace range | |
21 | { | |
22 | ||
23 | /// \brief template function binary_search | |
24 | /// | |
25 | /// range-based version of the binary_search std algorithm | |
26 | /// | |
27 | /// \pre ForwardRange is a model of the ForwardRangeConcept | |
28 | /// \pre BinaryPredicate is a model of the BinaryPredicateConcept | |
29 | template<class ForwardRange, class Value> | |
30 | inline bool binary_search(const ForwardRange& rng, const Value& val) | |
31 | { | |
32 | BOOST_RANGE_CONCEPT_ASSERT(( ForwardRangeConcept<const ForwardRange> )); | |
33 | return std::binary_search(boost::begin(rng), boost::end(rng), val); | |
34 | } | |
35 | ||
36 | /// \overload | |
37 | template<class ForwardRange, class Value, class BinaryPredicate> | |
38 | inline bool binary_search(const ForwardRange& rng, const Value& val, | |
39 | BinaryPredicate pred) | |
40 | { | |
41 | BOOST_RANGE_CONCEPT_ASSERT(( ForwardRangeConcept<const ForwardRange> )); | |
42 | return std::binary_search(boost::begin(rng), boost::end(rng), val, pred); | |
43 | } | |
44 | ||
45 | } // namespace range | |
46 | using range::binary_search; | |
47 | } // namespace boost | |
48 | ||
49 | #endif // include guard |