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_PARTITION_COPY_H
10#define _LIBCPP___ALGORITHM_PARTITION_COPY_H
11
12#include <__config>
13#include <__iterator/iterator_traits.h>
14#include <__utility/pair.h>
15
16#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
17# pragma GCC system_header
18#endif
19
20_LIBCPP_BEGIN_NAMESPACE_STD
21
22template <class _InputIterator, class _OutputIterator1, class _OutputIterator2, class _Predicate>
23_LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 pair<_OutputIterator1, _OutputIterator2> partition_copy(
24 _InputIterator __first,
25 _InputIterator __last,
26 _OutputIterator1 __out_true,
27 _OutputIterator2 __out_false,
28 _Predicate __pred) {
29 for (; __first != __last; ++__first) {
30 if (__pred(*__first)) {
31 *__out_true = *__first;
32 ++__out_true;
33 } else {
34 *__out_false = *__first;
35 ++__out_false;
36 }
37 }
38 return pair<_OutputIterator1, _OutputIterator2>(__out_true, __out_false);
39}
40
41_LIBCPP_END_NAMESPACE_STD
42
43#endif // _LIBCPP___ALGORITHM_PARTITION_COPY_H
44