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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_MINMAX_ELEMENT_H
10#define _LIBCPP___ALGORITHM_RANGES_MINMAX_ELEMENT_H
11
12#include <__algorithm/min_max_result.h>
13#include <__algorithm/minmax_element.h>
14#include <__config>
15#include <__functional/identity.h>
16#include <__functional/invoke.h>
17#include <__functional/ranges_operations.h>
18#include <__iterator/concepts.h>
19#include <__iterator/projected.h>
20#include <__ranges/access.h>
21#include <__ranges/concepts.h>
22#include <__ranges/dangling.h>
23#include <__utility/forward.h>
24#include <__utility/move.h>
25#include <__utility/pair.h>
26
27#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
28# pragma GCC system_header
29#endif
30
31_LIBCPP_PUSH_MACROS
32#include <__undef_macros>
33
34#if _LIBCPP_STD_VER >= 20
35
36_LIBCPP_BEGIN_NAMESPACE_STD
37
38namespace ranges {
39
40template <class _T1>
41using minmax_element_result = min_max_result<_T1>;
42
43struct __minmax_element {
44 template <forward_iterator _Ip,
45 sentinel_for<_Ip> _Sp,
46 class _Proj = identity,
47 indirect_strict_weak_order<projected<_Ip, _Proj>> _Comp = ranges::less>
48 [[nodiscard]] _LIBCPP_HIDE_FROM_ABI constexpr ranges::minmax_element_result<_Ip>
49 operator()(_Ip __first, _Sp __last, _Comp __comp = {}, _Proj __proj = {}) const {
50 auto __ret = std::__minmax_element_impl(std::move(__first), std::move(__last), __comp, __proj);
51 return {__ret.first, __ret.second};
52 }
53
54 template <forward_range _Rp,
55 class _Proj = identity,
56 indirect_strict_weak_order<projected<iterator_t<_Rp>, _Proj>> _Comp = ranges::less>
57 [[nodiscard]] _LIBCPP_HIDE_FROM_ABI constexpr ranges::minmax_element_result<borrowed_iterator_t<_Rp>>
58 operator()(_Rp&& __r, _Comp __comp = {}, _Proj __proj = {}) const {
59 auto __ret = std::__minmax_element_impl(ranges::begin(__r), ranges::end(__r), __comp, __proj);
60 return {__ret.first, __ret.second};
61 }
62};
63
64inline namespace __cpo {
65inline constexpr auto minmax_element = __minmax_element{};
66} // namespace __cpo
67
68} // namespace ranges
69
70_LIBCPP_END_NAMESPACE_STD
71
72#endif // _LIBCPP_STD_VER >= 20
73
74_LIBCPP_POP_MACROS
75
76#endif // _LIBCPP___ALGORITHM_RANGES_MINMAX_H
77

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source code of libcxx/include/__algorithm/ranges_minmax_element.h