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
15
16 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
17 #pragma GCC system_header
18 #endif
19
20 _LIBCPP_BEGIN_NAMESPACE_STD
21
22 template <class _InputIterator, class _OutputIterator1,
23 class _OutputIterator2, class _Predicate>
24 _LIBCPP_CONSTEXPR_AFTER_CXX17 pair<_OutputIterator1, _OutputIterator2>
partition_copy(_InputIterator __first,_InputIterator __last,_OutputIterator1 __out_true,_OutputIterator2 __out_false,_Predicate __pred)25 partition_copy(_InputIterator __first, _InputIterator __last,
26 _OutputIterator1 __out_true, _OutputIterator2 __out_false,
27 _Predicate __pred)
28 {
29 for (; __first != __last; ++__first)
30 {
31 if (__pred(*__first))
32 {
33 *__out_true = *__first;
34 ++__out_true;
35 }
36 else
37 {
38 *__out_false = *__first;
39 ++__out_false;
40 }
41 }
42 return pair<_OutputIterator1, _OutputIterator2>(__out_true, __out_false);
43 }
44
45 _LIBCPP_END_NAMESPACE_STD
46
47 #endif // _LIBCPP___ALGORITHM_PARTITION_COPY_H
48