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> 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