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 #if _LIBCPP_STD_VER > 17
31 
32 _LIBCPP_BEGIN_NAMESPACE_STD
33 
34 namespace ranges {
35 
36 namespace __lower_bound {
37 struct __fn {
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_NODISCARD_EXT _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);
43   }
44 
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_NODISCARD_EXT _LIBCPP_HIDE_FROM_ABI constexpr
48   borrowed_iterator_t<_Range> operator()(_Range&& __r,
49                                          const _Type& __value,
50                                          _Comp __comp = {},
51                                          _Proj __proj = {}) const {
52     return std::__lower_bound_impl<_RangeAlgPolicy>(ranges::begin(__r), ranges::end(__r), __value, __comp, __proj);
53   }
54 };
55 } // namespace __lower_bound
56 
57 inline namespace __cpo {
58   inline constexpr auto lower_bound = __lower_bound::__fn{};
59 } // namespace __cpo
60 } // namespace ranges
61 
62 _LIBCPP_END_NAMESPACE_STD
63 
64 #endif // _LIBCPP_STD_VER > 17
65 
66 #endif // _LIBCPP___ALGORITHM_RANGES_LOWER_BOUND_H
67