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 22 template <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