1 //===----------------------------------------------------------------------===//
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
7 //===----------------------------------------------------------------------===//
9 #ifndef _LIBCPP___ALGORITHM_MIN_ELEMENT_H
10 #define _LIBCPP___ALGORITHM_MIN_ELEMENT_H
12 #include <__algorithm/comp.h>
13 #include <__algorithm/comp_ref_type.h>
15 #include <__iterator/iterator_traits.h>
17 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
18 # pragma GCC system_header
21 _LIBCPP_BEGIN_NAMESPACE_STD
23 template <class _Compare, class _ForwardIterator>
24 inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX11 _ForwardIterator
25 __min_element(_ForwardIterator __first, _ForwardIterator __last, _Compare __comp)
27 static_assert(__is_cpp17_forward_iterator<_ForwardIterator>::value,
28 "std::min_element requires a ForwardIterator");
29 if (__first != __last)
31 _ForwardIterator __i = __first;
32 while (++__i != __last)
33 if (__comp(*__i, *__first))
39 template <class _ForwardIterator, class _Compare>
40 _LIBCPP_NODISCARD_EXT inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX11 _ForwardIterator
41 min_element(_ForwardIterator __first, _ForwardIterator __last, _Compare __comp)
43 typedef typename __comp_ref_type<_Compare>::type _Comp_ref;
44 return _VSTD::__min_element<_Comp_ref>(__first, __last, __comp);
47 template <class _ForwardIterator>
48 _LIBCPP_NODISCARD_EXT inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX11 _ForwardIterator
49 min_element(_ForwardIterator __first, _ForwardIterator __last)
51 return _VSTD::min_element(__first, __last,
52 __less<typename iterator_traits<_ForwardIterator>::value_type>());
55 _LIBCPP_END_NAMESPACE_STD
57 #endif // _LIBCPP___ALGORITHM_MIN_ELEMENT_H