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_PUSH_MACROS 21 #include <__undef_macros> 22 23 _LIBCPP_BEGIN_NAMESPACE_STD 24 25 template <class _InputIterator, class _OutputIterator1, 26 class _OutputIterator2, class _Predicate> 27 _LIBCPP_CONSTEXPR_AFTER_CXX17 pair<_OutputIterator1, _OutputIterator2> 28 partition_copy(_InputIterator __first, _InputIterator __last, 29 _OutputIterator1 __out_true, _OutputIterator2 __out_false, 30 _Predicate __pred) 31 { 32 for (; __first != __last; ++__first) 33 { 34 if (__pred(*__first)) 35 { 36 *__out_true = *__first; 37 ++__out_true; 38 } 39 else 40 { 41 *__out_false = *__first; 42 ++__out_false; 43 } 44 } 45 return pair<_OutputIterator1, _OutputIterator2>(__out_true, __out_false); 46 } 47 48 _LIBCPP_END_NAMESPACE_STD 49 50 _LIBCPP_POP_MACROS 51 52 #endif // _LIBCPP___ALGORITHM_PARTITION_COPY_H 53