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_MIN_ELEMENT_H 10 #define _LIBCPP___ALGORITHM_MIN_ELEMENT_H 11 12 #include <__config> 13 #include <__algorithm/comp.h> 14 #include <__iterator/iterator_traits.h> 15 16 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 17 #pragma GCC system_header 18 #endif 19 20 _LIBCPP_PUSH_MACROS 21 #include <__undef_macros> 22 23 _LIBCPP_BEGIN_NAMESPACE_STD 24 25 template <class _ForwardIterator, class _Compare> 26 _LIBCPP_NODISCARD_EXT inline 27 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 28 _ForwardIterator 29 min_element(_ForwardIterator __first, _ForwardIterator __last, _Compare __comp) 30 { 31 static_assert(__is_cpp17_forward_iterator<_ForwardIterator>::value, 32 "std::min_element requires a ForwardIterator"); 33 if (__first != __last) 34 { 35 _ForwardIterator __i = __first; 36 while (++__i != __last) 37 if (__comp(*__i, *__first)) 38 __first = __i; 39 } 40 return __first; 41 } 42 43 template <class _ForwardIterator> 44 _LIBCPP_NODISCARD_EXT inline 45 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX11 46 _ForwardIterator 47 min_element(_ForwardIterator __first, _ForwardIterator __last) 48 { 49 return _VSTD::min_element(__first, __last, 50 __less<typename iterator_traits<_ForwardIterator>::value_type>()); 51 } 52 53 _LIBCPP_END_NAMESPACE_STD 54 55 _LIBCPP_POP_MACROS 56 57 #endif // _LIBCPP___ALGORITHM_MIN_ELEMENT_H 58