1 //===----------------------------------------------------------------------===//
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
7 //===----------------------------------------------------------------------===//
9 #ifndef _LIBCPP___ALGORITHM_RANGES_UPPER_BOUND_H
10 #define _LIBCPP___ALGORITHM_RANGES_UPPER_BOUND_H
12 #include <__cxx03/__algorithm/iterator_operations.h>
13 #include <__cxx03/__algorithm/lower_bound.h>
14 #include <__cxx03/__config>
15 #include <__cxx03/__functional/identity.h>
16 #include <__cxx03/__functional/invoke.h>
17 #include <__cxx03/__functional/ranges_operations.h>
18 #include <__cxx03/__iterator/concepts.h>
19 #include <__cxx03/__iterator/projected.h>
20 #include <__cxx03/__ranges/access.h>
21 #include <__cxx03/__ranges/concepts.h>
22 #include <__cxx03/__ranges/dangling.h>
24 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
25 # pragma GCC system_header
28 #if _LIBCPP_STD_VER >= 20
30 _LIBCPP_BEGIN_NAMESPACE_STD
33 namespace __upper_bound
{
35 template <forward_iterator _Iter
,
36 sentinel_for
<_Iter
> _Sent
,
38 class _Proj
= identity
,
39 indirect_strict_weak_order
<const _Type
*, projected
<_Iter
, _Proj
>> _Comp
= ranges::less
>
40 [[nodiscard
]] _LIBCPP_HIDE_FROM_ABI
constexpr _Iter
41 operator()(_Iter __first
, _Sent __last
, const _Type
& __value
, _Comp __comp
= {}, _Proj __proj
= {}) const {
42 auto __comp_lhs_rhs_swapped
= [&](const auto& __lhs
, const auto& __rhs
) -> bool {
43 return !std::invoke(__comp
, __rhs
, __lhs
);
46 return std::__lower_bound
<_RangeAlgPolicy
>(__first
, __last
, __value
, __comp_lhs_rhs_swapped
, __proj
);
49 template <forward_range _Range
,
51 class _Proj
= identity
,
52 indirect_strict_weak_order
<const _Type
*, projected
<iterator_t
<_Range
>, _Proj
>> _Comp
= ranges::less
>
53 [[nodiscard
]] _LIBCPP_HIDE_FROM_ABI
constexpr borrowed_iterator_t
<_Range
>
54 operator()(_Range
&& __r
, const _Type
& __value
, _Comp __comp
= {}, _Proj __proj
= {}) const {
55 auto __comp_lhs_rhs_swapped
= [&](const auto& __lhs
, const auto& __rhs
) -> bool {
56 return !std::invoke(__comp
, __rhs
, __lhs
);
59 return std::__lower_bound
<_RangeAlgPolicy
>(
60 ranges::begin(__r
), ranges::end(__r
), __value
, __comp_lhs_rhs_swapped
, __proj
);
63 } // namespace __upper_bound
65 inline namespace __cpo
{
66 inline constexpr auto upper_bound
= __upper_bound::__fn
{};
70 _LIBCPP_END_NAMESPACE_STD
72 #endif // _LIBCPP_STD_VER >= 20
74 #endif // _LIBCPP___ALGORITHM_RANGES_UPPER_BOUND_H