Horizon
Loading...
Searching...
No Matches
lower_bound.hpp
Go to the documentation of this file.
1
2// Range v3 library
3//
4// Copyright Eric Niebler 2014-present
5// Copyright Casey Carter 2016
6//
7// Use, modification and distribution is subject to the
8// Boost Software License, Version 1.0. (See accompanying
9// file LICENSE_1_0.txt or copy at
10// http://www.boost.org/LICENSE_1_0.txt)
11//
12// Project home: https://github.com/ericniebler/range-v3
13//
14#ifndef RANGES_V3_ALGORITHM_LOWER_BOUND_HPP
15#define RANGES_V3_ALGORITHM_LOWER_BOUND_HPP
16
18
29#include <range/v3/utility/static_const.hpp>
30
31#include <range/v3/detail/prologue.hpp>
32
33namespace ranges
34{
37 RANGES_FUNC_BEGIN(lower_bound)
38
39
40 template(typename I,
41 typename S,
42 typename V,
43 typename C = less,
44 typename P = identity)(
45 requires forward_iterator<I> AND sentinel_for<S, I> AND
46 indirect_strict_weak_order<C, V const *, projected<I, P>>)
47 constexpr I RANGES_FUNC(lower_bound)(I first,
48 S last,
49 V const & val,
50 C pred = C{},
51 P proj = P{})
52 {
53 return partition_point(std::move(first),
54 std::move(last),
55 detail::make_lower_bound_predicate(pred, val),
56 std::move(proj));
57 }
58
60 template(typename Rng, typename V, typename C = less, typename P = identity)(
61 requires forward_range<Rng> AND
62 indirect_strict_weak_order<C, V const *, projected<iterator_t<Rng>, P>>)
63 constexpr borrowed_iterator_t<Rng> //
64 RANGES_FUNC(lower_bound)(Rng && rng, V const & val, C pred = C{}, P proj = P{})
65 {
66 return partition_point(
67 rng, detail::make_lower_bound_predicate(pred, val), std::move(proj));
68 }
69
70 RANGES_FUNC_END(lower_bound)
71
72 namespace cpp20
73 {
74 using ranges::lower_bound;
75 }
77} // namespace ranges
78
79#include <range/v3/detail/epilogue.hpp>
80
81#endif
front< Pair > first
Retrieve the first element of the pair Pair.
Definition meta.hpp:2251
bool_<(T::type::value< U::type::value)> less
A Boolean integral constant wrapper around true if T::type::value is less than U::type::value; false,...
Definition meta.hpp:255