1//===----------------------------------------------------------------------===//
 2//
 3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
 4// See https://llvm.org/LICENSE.txt for license information.
 5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
 6//
 7//===----------------------------------------------------------------------===//
 8
 9#ifndef _LIBCPP___ALGORITHM_RANGES_LOWER_BOUND_H
10#define _LIBCPP___ALGORITHM_RANGES_LOWER_BOUND_H
11
12#include <__algorithm/iterator_operations.h>
13#include <__algorithm/lower_bound.h>
14#include <__config>
15#include <__functional/identity.h>
16#include <__functional/invoke.h>
17#include <__functional/ranges_operations.h>
18#include <__iterator/advance.h>
19#include <__iterator/concepts.h>
20#include <__iterator/iterator_traits.h>
21#include <__iterator/projected.h>
22#include <__ranges/access.h>
23#include <__ranges/concepts.h>
24#include <__ranges/dangling.h>
25
26#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
27#  pragma GCC system_header
28#endif
29
30_LIBCPP_PUSH_MACROS
31#include <__undef_macros>
32
33#if _LIBCPP_STD_VER >= 20
34
35_LIBCPP_BEGIN_NAMESPACE_STD
36
37namespace ranges {
38
39struct __lower_bound {
40  template <forward_iterator _Iter,
41            sentinel_for<_Iter> _Sent,
42            class _Type,
43            class _Proj                                                             = identity,
44            indirect_strict_weak_order<const _Type*, projected<_Iter, _Proj>> _Comp = ranges::less>
45  [[nodiscard]] _LIBCPP_HIDE_FROM_ABI constexpr _Iter
46  operator()(_Iter __first, _Sent __last, const _Type& __value, _Comp __comp = {}, _Proj __proj = {}) const {
47    return std::__lower_bound<_RangeAlgPolicy>(__first, __last, __value, __comp, __proj);
48  }
49
50  template <forward_range _Range,
51            class _Type,
52            class _Proj                                                                          = identity,
53            indirect_strict_weak_order<const _Type*, projected<iterator_t<_Range>, _Proj>> _Comp = ranges::less>
54  [[nodiscard]] _LIBCPP_HIDE_FROM_ABI constexpr borrowed_iterator_t<_Range>
55  operator()(_Range&& __r, const _Type& __value, _Comp __comp = {}, _Proj __proj = {}) const {
56    return std::__lower_bound<_RangeAlgPolicy>(ranges::begin(__r), ranges::end(__r), __value, __comp, __proj);
57  }
58};
59
60inline namespace __cpo {
61inline constexpr auto lower_bound = __lower_bound{};
62} // namespace __cpo
63} // namespace ranges
64
65_LIBCPP_END_NAMESPACE_STD
66
67#endif // _LIBCPP_STD_VER >= 20
68
69_LIBCPP_POP_MACROS
70
71#endif // _LIBCPP___ALGORITHM_RANGES_LOWER_BOUND_H