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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___CXX03___ALGORITHM_FIND_FIRST_OF_H
11#define _LIBCPP___CXX03___ALGORITHM_FIND_FIRST_OF_H
12
13#include <__cxx03/__algorithm/comp.h>
14#include <__cxx03/__config>
15#include <__cxx03/__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
23template <class _ForwardIterator1, class _ForwardIterator2, class _BinaryPredicate>
24_LIBCPP_HIDE_FROM_ABI _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
37template <class _ForwardIterator1, class _ForwardIterator2, class _BinaryPredicate>
38_LIBCPP_NODISCARD inline _LIBCPP_HIDE_FROM_ABI _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
47template <class _ForwardIterator1, class _ForwardIterator2>
48_LIBCPP_NODISCARD inline _LIBCPP_HIDE_FROM_ABI _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___CXX03___ALGORITHM_FIND_FIRST_OF_H
56

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source code of libcxx/include/__cxx03/__algorithm/find_first_of.h