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_LOWER_BOUND_H
10 #define _LIBCPP___ALGORITHM_RANGES_LOWER_BOUND_H
12 #include <__algorithm/iterator_operations.h>
13 #include <__algorithm/lower_bound.h>
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>
26 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
27 # pragma GCC system_header
30 #if _LIBCPP_STD_VER > 17 && !defined(_LIBCPP_HAS_NO_INCOMPLETE_RANGES)
32 _LIBCPP_BEGIN_NAMESPACE_STD
36 namespace __lower_bound {
38 template <forward_iterator _Iter, sentinel_for<_Iter> _Sent, class _Type, class _Proj = identity,
39 indirect_strict_weak_order<const _Type*, projected<_Iter, _Proj>> _Comp = ranges::less>
40 _LIBCPP_HIDE_FROM_ABI constexpr
41 _Iter operator()(_Iter __first, _Sent __last, const _Type& __value, _Comp __comp = {}, _Proj __proj = {}) const {
42 return std::__lower_bound_impl<_RangeAlgPolicy>(__first, __last, __value, __comp, __proj);
45 template <forward_range _Range, class _Type, class _Proj = identity,
46 indirect_strict_weak_order<const _Type*, projected<iterator_t<_Range>, _Proj>> _Comp = ranges::less>
47 _LIBCPP_HIDE_FROM_ABI constexpr
48 borrowed_iterator_t<_Range> operator()(_Range&& __r,
51 _Proj __proj = {}) const {
52 return std::__lower_bound_impl<_RangeAlgPolicy>(ranges::begin(__r), ranges::end(__r), __value, __comp, __proj);
55 } // namespace __lower_bound
57 inline namespace __cpo {
58 inline constexpr auto lower_bound = __lower_bound::__fn{};
62 _LIBCPP_END_NAMESPACE_STD
64 #endif // _LIBCPP_STD_VER > 17 && !defined(_LIBCPP_HAS_NO_INCOMPLETE_RANGES)
66 #endif // _LIBCPP___ALGORITHM_RANGES_LOWER_BOUND_H