xref: /freebsd-src/contrib/llvm-project/libcxx/include/__algorithm/binary_search.h (revision 0fca6ea1d4eea4c934cfff25ac9ee8ad6fe95583)
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_BINARY_SEARCH_H
10fe6060f1SDimitry Andric #define _LIBCPP___ALGORITHM_BINARY_SEARCH_H
11fe6060f1SDimitry Andric 
12fe6060f1SDimitry Andric #include <__algorithm/comp.h>
13fe6060f1SDimitry Andric #include <__algorithm/comp_ref_type.h>
145e801ac6SDimitry Andric #include <__algorithm/lower_bound.h>
1504eeddc0SDimitry Andric #include <__config>
16fe6060f1SDimitry Andric #include <__iterator/iterator_traits.h>
17fe6060f1SDimitry Andric 
18fe6060f1SDimitry Andric #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
19fe6060f1SDimitry Andric #  pragma GCC system_header
20fe6060f1SDimitry Andric #endif
21fe6060f1SDimitry Andric 
22fe6060f1SDimitry Andric _LIBCPP_BEGIN_NAMESPACE_STD
23fe6060f1SDimitry Andric 
24fe6060f1SDimitry Andric template <class _ForwardIterator, class _Tp, class _Compare>
25*0fca6ea1SDimitry Andric _LIBCPP_NODISCARD inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 bool
26cb14a3feSDimitry Andric binary_search(_ForwardIterator __first, _ForwardIterator __last, const _Tp& __value, _Compare __comp) {
27bdd1243dSDimitry Andric   __first = std::lower_bound<_ForwardIterator, _Tp, __comp_ref_type<_Compare> >(__first, __last, __value, __comp);
28753f127fSDimitry Andric   return __first != __last && !__comp(__value, *__first);
29fe6060f1SDimitry Andric }
30fe6060f1SDimitry Andric 
31fe6060f1SDimitry Andric template <class _ForwardIterator, class _Tp>
32*0fca6ea1SDimitry Andric _LIBCPP_NODISCARD inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 bool
33cb14a3feSDimitry Andric binary_search(_ForwardIterator __first, _ForwardIterator __last, const _Tp& __value) {
3406c3fb27SDimitry Andric   return std::binary_search(__first, __last, __value, __less<>());
35fe6060f1SDimitry Andric }
36fe6060f1SDimitry Andric 
37fe6060f1SDimitry Andric _LIBCPP_END_NAMESPACE_STD
38fe6060f1SDimitry Andric 
39fe6060f1SDimitry Andric #endif // _LIBCPP___ALGORITHM_BINARY_SEARCH_H
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