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 # pragma clang include_instead(<algorithm>) 19 #endif 20 21 _LIBCPP_BEGIN_NAMESPACE_STD 22 23 template <class _InputIterator, class _OutputIterator1, 24 class _OutputIterator2, class _Predicate> 25 _LIBCPP_CONSTEXPR_AFTER_CXX17 pair<_OutputIterator1, _OutputIterator2> 26 partition_copy(_InputIterator __first, _InputIterator __last, 27 _OutputIterator1 __out_true, _OutputIterator2 __out_false, 28 _Predicate __pred) 29 { 30 for (; __first != __last; ++__first) 31 { 32 if (__pred(*__first)) 33 { 34 *__out_true = *__first; 35 ++__out_true; 36 } 37 else 38 { 39 *__out_false = *__first; 40 ++__out_false; 41 } 42 } 43 return pair<_OutputIterator1, _OutputIterator2>(__out_true, __out_false); 44 } 45 46 _LIBCPP_END_NAMESPACE_STD 47 48 #endif // _LIBCPP___ALGORITHM_PARTITION_COPY_H 49