1 // Copyright Bryce Lelbach 2010
2 // Copyright Neil Groves 2009. Use, modification and
3 // distribution is subject to the Boost Software License, Version
4 // 1.0. (See accompanying file LICENSE_1_0.txt or copy at
5 // http://www.boost.org/LICENSE_1_0.txt)
6 //
7 //
8 // For more information, see http://www.boost.org/libs/range/
9 //
10 #ifndef BOOST_RANGE_ALGORITHM_EXT_IS_SORTED_HPP_INCLUDED
11 #define BOOST_RANGE_ALGORITHM_EXT_IS_SORTED_HPP_INCLUDED
12
13 #include <boost/concept_check.hpp>
14 #include <boost/range/begin.hpp>
15 #include <boost/range/end.hpp>
16 #include <boost/range/concepts.hpp>
17 #include <boost/range/value_type.hpp>
18 #include <boost/detail/is_sorted.hpp>
19 #include <algorithm>
20
21 namespace boost
22 {
23 namespace range
24 {
25
26 /// \brief template function is_sorted
27 ///
28 /// range-based version of the is_sorted std algorithm
29 ///
30 /// \pre SinglePassRange is a model of the SinglePassRangeConcept
31 template<class SinglePassRange>
is_sorted(const SinglePassRange & rng)32 inline bool is_sorted(const SinglePassRange& rng)
33 {
34 BOOST_RANGE_CONCEPT_ASSERT((SinglePassRangeConcept<const SinglePassRange>));
35 BOOST_RANGE_CONCEPT_ASSERT((LessThanComparableConcept<BOOST_DEDUCED_TYPENAME
36 range_value<const SinglePassRange>::type>));
37 return ::boost::detail::is_sorted(boost::begin(rng), boost::end(rng));
38 }
39
40 /// \overload
41 template<class SinglePassRange, class BinaryPredicate>
is_sorted(const SinglePassRange & rng,BinaryPredicate pred)42 inline bool is_sorted(const SinglePassRange& rng, BinaryPredicate pred)
43 {
44 BOOST_RANGE_CONCEPT_ASSERT((SinglePassRangeConcept<const SinglePassRange>));
45 BOOST_RANGE_CONCEPT_ASSERT((BinaryPredicateConcept<BinaryPredicate,
46 BOOST_DEDUCED_TYPENAME range_value<const SinglePassRange>::type,
47 BOOST_DEDUCED_TYPENAME range_value<const SinglePassRange>::type>));
48 return ::boost::detail::is_sorted(boost::begin(rng), boost::end(rng), pred);
49 }
50
51 } // namespace range
52
53 using range::is_sorted;
54
55 } // namespace boost
56
57 #endif // include guard
58