1fe6060f1SDimitry Andric //===----------------------------------------------------------------------===// 2fe6060f1SDimitry Andric // 3fe6060f1SDimitry Andric // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4fe6060f1SDimitry Andric // See https://llvm.org/LICENSE.txt for license information. 5fe6060f1SDimitry Andric // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6fe6060f1SDimitry Andric // 7fe6060f1SDimitry Andric //===----------------------------------------------------------------------===// 8fe6060f1SDimitry Andric 9fe6060f1SDimitry Andric #ifndef _LIBCPP___ALGORITHM_MAX_ELEMENT_H 10fe6060f1SDimitry Andric #define _LIBCPP___ALGORITHM_MAX_ELEMENT_H 11fe6060f1SDimitry Andric 12fe6060f1SDimitry Andric #include <__algorithm/comp.h> 135e801ac6SDimitry Andric #include <__algorithm/comp_ref_type.h> 1404eeddc0SDimitry Andric #include <__config> 15fe6060f1SDimitry Andric #include <__iterator/iterator_traits.h> 16fe6060f1SDimitry Andric 17fe6060f1SDimitry Andric #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 18fe6060f1SDimitry Andric # pragma GCC system_header 19fe6060f1SDimitry Andric #endif 20fe6060f1SDimitry Andric 21fe6060f1SDimitry Andric _LIBCPP_BEGIN_NAMESPACE_STD 22fe6060f1SDimitry Andric 235e801ac6SDimitry Andric template <class _Compare, class _ForwardIterator> 24bdd1243dSDimitry Andric inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 _ForwardIterator 25cb14a3feSDimitry Andric __max_element(_ForwardIterator __first, _ForwardIterator __last, _Compare __comp) { 26cb14a3feSDimitry Andric static_assert( 27cb14a3feSDimitry Andric __has_forward_iterator_category<_ForwardIterator>::value, "std::max_element requires a ForwardIterator"); 28cb14a3feSDimitry Andric if (__first != __last) { 29fe6060f1SDimitry Andric _ForwardIterator __i = __first; 30fe6060f1SDimitry Andric while (++__i != __last) 31fe6060f1SDimitry Andric if (__comp(*__first, *__i)) 32fe6060f1SDimitry Andric __first = __i; 33fe6060f1SDimitry Andric } 34fe6060f1SDimitry Andric return __first; 35fe6060f1SDimitry Andric } 36fe6060f1SDimitry Andric 375e801ac6SDimitry Andric template <class _ForwardIterator, class _Compare> 38*0fca6ea1SDimitry Andric _LIBCPP_NODISCARD inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 _ForwardIterator 39cb14a3feSDimitry Andric max_element(_ForwardIterator __first, _ForwardIterator __last, _Compare __comp) { 405f757f3fSDimitry Andric return std::__max_element<__comp_ref_type<_Compare> >(__first, __last, __comp); 415e801ac6SDimitry Andric } 425e801ac6SDimitry Andric 43fe6060f1SDimitry Andric template <class _ForwardIterator> 44*0fca6ea1SDimitry Andric _LIBCPP_NODISCARD inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 _ForwardIterator 45cb14a3feSDimitry Andric max_element(_ForwardIterator __first, _ForwardIterator __last) { 465f757f3fSDimitry Andric return std::max_element(__first, __last, __less<>()); 47fe6060f1SDimitry Andric } 48fe6060f1SDimitry Andric 49fe6060f1SDimitry Andric _LIBCPP_END_NAMESPACE_STD 50fe6060f1SDimitry Andric 51fe6060f1SDimitry Andric #endif // _LIBCPP___ALGORITHM_MAX_ELEMENT_H 52