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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-exception6//7//===----------------------------------------------------------------------===//8 9#ifndef _LIBCPP___ALGORITHM_RANGES_MAX_ELEMENT_H10#define _LIBCPP___ALGORITHM_RANGES_MAX_ELEMENT_H11 12#include <__algorithm/min_element.h>13#include <__config>14#include <__functional/identity.h>15#include <__functional/invoke.h>16#include <__functional/ranges_operations.h>17#include <__iterator/concepts.h>18#include <__iterator/projected.h>19#include <__ranges/access.h>20#include <__ranges/concepts.h>21#include <__ranges/dangling.h>22 23#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)24# pragma GCC system_header25#endif26 27_LIBCPP_PUSH_MACROS28#include <__undef_macros>29 30#if _LIBCPP_STD_VER >= 2031 32_LIBCPP_BEGIN_NAMESPACE_STD33 34namespace ranges {35struct __max_element {36 template <forward_iterator _Ip,37 sentinel_for<_Ip> _Sp,38 class _Proj = identity,39 indirect_strict_weak_order<projected<_Ip, _Proj>> _Comp = ranges::less>40 [[nodiscard]] _LIBCPP_HIDE_FROM_ABI constexpr _Ip41 operator()(_Ip __first, _Sp __last, _Comp __comp = {}, _Proj __proj = {}) const {42 auto __comp_lhs_rhs_swapped = [&](auto&& __lhs, auto&& __rhs) -> bool { return std::invoke(__comp, __rhs, __lhs); };43 return std::__min_element(__first, __last, __comp_lhs_rhs_swapped, __proj);44 }45 46 template <forward_range _Rp,47 class _Proj = identity,48 indirect_strict_weak_order<projected<iterator_t<_Rp>, _Proj>> _Comp = ranges::less>49 [[nodiscard]] _LIBCPP_HIDE_FROM_ABI constexpr borrowed_iterator_t<_Rp>50 operator()(_Rp&& __r, _Comp __comp = {}, _Proj __proj = {}) const {51 auto __comp_lhs_rhs_swapped = [&](auto&& __lhs, auto&& __rhs) -> bool { return std::invoke(__comp, __rhs, __lhs); };52 return std::__min_element(ranges::begin(__r), ranges::end(__r), __comp_lhs_rhs_swapped, __proj);53 }54};55 56inline namespace __cpo {57inline constexpr auto max_element = __max_element{};58} // namespace __cpo59} // namespace ranges60 61_LIBCPP_END_NAMESPACE_STD62 63#endif // _LIBCPP_STD_VER >= 2064 65_LIBCPP_POP_MACROS66 67#endif // _LIBCPP___ALGORITHM_RANGES_MAX_ELEMENT_H68