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_MIN_ELEMENT_H 10 #define _LIBCPP___ALGORITHM_RANGES_MIN_ELEMENT_H 11 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 #include <__utility/forward.h> 23 24 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 25 # pragma GCC system_header 26 #endif 27 28 _LIBCPP_PUSH_MACROS 29 #include <__undef_macros> 30 31 #if _LIBCPP_STD_VER >= 20 32 33 _LIBCPP_BEGIN_NAMESPACE_STD 34 35 namespace ranges { 36 struct __min_element { 37 template <forward_iterator _Ip, 38 sentinel_for<_Ip> _Sp, 39 class _Proj = identity, 40 indirect_strict_weak_order<projected<_Ip, _Proj>> _Comp = ranges::less> 41 [[nodiscard]] _LIBCPP_HIDE_FROM_ABI constexpr _Ip operator__min_element42 operator()(_Ip __first, _Sp __last, _Comp __comp = {}, _Proj __proj = {}) const { 43 return std::__min_element(__first, __last, __comp, __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> operator__min_element50 operator()(_Rp&& __r, _Comp __comp = {}, _Proj __proj = {}) const { 51 return std::__min_element(ranges::begin(__r), ranges::end(__r), __comp, __proj); 52 } 53 }; 54 55 inline namespace __cpo { 56 inline constexpr auto min_element = __min_element{}; 57 } // namespace __cpo 58 } // namespace ranges 59 60 _LIBCPP_END_NAMESPACE_STD 61 62 #endif // _LIBCPP_STD_VER >= 20 63 64 _LIBCPP_POP_MACROS 65 66 #endif // _LIBCPP___ALGORITHM_RANGES_MIN_ELEMENT_H 67