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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_LOWER_BOUND_HPP_INCLUDED | |
10 | #define BOOST_RANGE_ALGORITHM_LOWER_BOUND_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 <boost/range/detail/range_return.hpp> | |
17 | #include <algorithm> | |
18 | ||
19 | namespace boost | |
20 | { | |
21 | namespace range | |
22 | { | |
23 | ||
24 | /// \brief template function lower_bound | |
25 | /// | |
26 | /// range-based version of the lower_bound std algorithm | |
27 | /// | |
28 | /// \pre ForwardRange is a model of the ForwardRangeConcept | |
29 | template< class ForwardRange, class Value > | |
30 | inline BOOST_DEDUCED_TYPENAME disable_if< | |
31 | is_const<ForwardRange>, | |
32 | BOOST_DEDUCED_TYPENAME range_iterator<ForwardRange>::type | |
33 | >::type | |
20effc67 | 34 | lower_bound( ForwardRange& rng, const Value& val ) |
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35 | { |
36 | BOOST_RANGE_CONCEPT_ASSERT(( ForwardRangeConcept<ForwardRange> )); | |
37 | return std::lower_bound(boost::begin(rng), boost::end(rng), val); | |
38 | } | |
39 | ||
40 | /// \overload | |
41 | template< class ForwardRange, class Value > | |
42 | inline BOOST_DEDUCED_TYPENAME range_iterator<const ForwardRange>::type | |
20effc67 | 43 | lower_bound( const ForwardRange& rng, const Value& val ) |
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44 | { |
45 | BOOST_RANGE_CONCEPT_ASSERT(( ForwardRangeConcept<const ForwardRange> )); | |
46 | return std::lower_bound(boost::begin(rng), boost::end(rng), val); | |
47 | } | |
48 | ||
49 | /// \overload | |
50 | template< class ForwardRange, class Value, class SortPredicate > | |
51 | inline BOOST_DEDUCED_TYPENAME disable_if< | |
52 | is_const<ForwardRange>, | |
53 | BOOST_DEDUCED_TYPENAME range_iterator<ForwardRange>::type | |
54 | >::type | |
20effc67 | 55 | lower_bound( ForwardRange& rng, const Value& val, SortPredicate pred ) |
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56 | { |
57 | BOOST_RANGE_CONCEPT_ASSERT(( ForwardRangeConcept<ForwardRange> )); | |
58 | return std::lower_bound(boost::begin(rng), boost::end(rng), val, pred); | |
59 | } | |
60 | ||
61 | /// \overload | |
62 | template< class ForwardRange, class Value, class SortPredicate > | |
63 | inline BOOST_DEDUCED_TYPENAME range_iterator<const ForwardRange>::type | |
20effc67 | 64 | lower_bound( const ForwardRange& rng, const Value& val, SortPredicate pred ) |
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65 | { |
66 | BOOST_RANGE_CONCEPT_ASSERT(( ForwardRangeConcept<const ForwardRange> )); | |
67 | return std::lower_bound(boost::begin(rng), boost::end(rng), val, pred); | |
68 | } | |
69 | ||
70 | /// \overload | |
71 | template< range_return_value re, class ForwardRange, class Value > | |
72 | inline BOOST_DEDUCED_TYPENAME disable_if< | |
73 | is_const<ForwardRange>, | |
74 | BOOST_DEDUCED_TYPENAME range_return<ForwardRange,re>::type | |
75 | >::type | |
20effc67 | 76 | lower_bound( ForwardRange& rng, const Value& val ) |
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77 | { |
78 | BOOST_RANGE_CONCEPT_ASSERT(( ForwardRangeConcept<ForwardRange> )); | |
79 | return range_return<ForwardRange,re>:: | |
80 | pack(std::lower_bound(boost::begin(rng), boost::end(rng), val), | |
81 | rng); | |
82 | } | |
83 | ||
84 | /// \overload | |
85 | template< range_return_value re, class ForwardRange, class Value > | |
86 | inline BOOST_DEDUCED_TYPENAME range_return<const ForwardRange,re>::type | |
20effc67 | 87 | lower_bound( const ForwardRange& rng, const Value& val ) |
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88 | { |
89 | BOOST_RANGE_CONCEPT_ASSERT(( ForwardRangeConcept<const ForwardRange> )); | |
90 | return range_return<const ForwardRange,re>:: | |
91 | pack(std::lower_bound(boost::begin(rng), boost::end(rng), val), | |
92 | rng); | |
93 | } | |
94 | ||
95 | /// \overload | |
96 | template< range_return_value re, class ForwardRange, class Value, class SortPredicate > | |
97 | inline BOOST_DEDUCED_TYPENAME disable_if< | |
98 | is_const<ForwardRange>, | |
99 | BOOST_DEDUCED_TYPENAME range_return<ForwardRange,re>::type | |
100 | >::type | |
20effc67 | 101 | lower_bound( ForwardRange& rng, const Value& val, SortPredicate pred ) |
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102 | { |
103 | BOOST_RANGE_CONCEPT_ASSERT(( ForwardRangeConcept<ForwardRange> )); | |
104 | return range_return<ForwardRange,re>:: | |
105 | pack(std::lower_bound(boost::begin(rng), boost::end(rng), val, pred), | |
106 | rng); | |
107 | } | |
108 | ||
109 | /// \overload | |
110 | template< range_return_value re, class ForwardRange, class Value, class SortPredicate > | |
111 | inline BOOST_DEDUCED_TYPENAME range_return<const ForwardRange,re>::type | |
20effc67 | 112 | lower_bound( const ForwardRange& rng, const Value& val, SortPredicate pred ) |
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113 | { |
114 | BOOST_RANGE_CONCEPT_ASSERT(( ForwardRangeConcept<const ForwardRange> )); | |
115 | return range_return<const ForwardRange,re>:: | |
116 | pack(std::lower_bound(boost::begin(rng), boost::end(rng), val, pred), | |
117 | rng); | |
118 | } | |
119 | ||
120 | } // namespace range | |
121 | using range::lower_bound; | |
122 | } // namespace boost | |
123 | ||
124 | #endif // include guard |