1 // -*- C++ -*-
2 //===----------------------------------------------------------------------===//
3 //
4 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
5 // See https://llvm.org/LICENSE.txt for license information.
6 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
7 //
8 //===----------------------------------------------------------------------===//
9
10 #ifndef _LIBCPP___ALGORITHM_FIND_FIRST_OF_H
11 #define _LIBCPP___ALGORITHM_FIND_FIRST_OF_H
12
13 #include <__algorithm/comp.h>
14 #include <__config>
15 #include <__iterator/iterator_traits.h>
16
17 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
18 # pragma GCC system_header
19 #endif
20
21 _LIBCPP_BEGIN_NAMESPACE_STD
22
23 template <class _ForwardIterator1, class _ForwardIterator2, class _BinaryPredicate>
__find_first_of_ce(_ForwardIterator1 __first1,_ForwardIterator1 __last1,_ForwardIterator2 __first2,_ForwardIterator2 __last2,_BinaryPredicate && __pred)24 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX14 _ForwardIterator1 __find_first_of_ce(
25 _ForwardIterator1 __first1,
26 _ForwardIterator1 __last1,
27 _ForwardIterator2 __first2,
28 _ForwardIterator2 __last2,
29 _BinaryPredicate&& __pred) {
30 for (; __first1 != __last1; ++__first1)
31 for (_ForwardIterator2 __j = __first2; __j != __last2; ++__j)
32 if (__pred(*__first1, *__j))
33 return __first1;
34 return __last1;
35 }
36
37 template <class _ForwardIterator1, class _ForwardIterator2, class _BinaryPredicate>
find_first_of(_ForwardIterator1 __first1,_ForwardIterator1 __last1,_ForwardIterator2 __first2,_ForwardIterator2 __last2,_BinaryPredicate __pred)38 _LIBCPP_NODISCARD inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 _ForwardIterator1 find_first_of(
39 _ForwardIterator1 __first1,
40 _ForwardIterator1 __last1,
41 _ForwardIterator2 __first2,
42 _ForwardIterator2 __last2,
43 _BinaryPredicate __pred) {
44 return std::__find_first_of_ce(__first1, __last1, __first2, __last2, __pred);
45 }
46
47 template <class _ForwardIterator1, class _ForwardIterator2>
find_first_of(_ForwardIterator1 __first1,_ForwardIterator1 __last1,_ForwardIterator2 __first2,_ForwardIterator2 __last2)48 _LIBCPP_NODISCARD inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 _ForwardIterator1 find_first_of(
49 _ForwardIterator1 __first1, _ForwardIterator1 __last1, _ForwardIterator2 __first2, _ForwardIterator2 __last2) {
50 return std::__find_first_of_ce(__first1, __last1, __first2, __last2, __equal_to());
51 }
52
53 _LIBCPP_END_NAMESPACE_STD
54
55 #endif // _LIBCPP___ALGORITHM_FIND_FIRST_OF_H
56