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_PSTL_TRANSFORM_H 10 #define _LIBCPP___ALGORITHM_PSTL_TRANSFORM_H 11 12 #include <__algorithm/pstl_backend.h> 13 #include <__config> 14 #include <__iterator/cpp17_iterator_concepts.h> 15 #include <__iterator/iterator_traits.h> 16 #include <__type_traits/enable_if.h> 17 #include <__type_traits/is_execution_policy.h> 18 #include <__type_traits/remove_cvref.h> 19 #include <__utility/move.h> 20 #include <__utility/terminate_on_exception.h> 21 22 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 23 # pragma GCC system_header 24 #endif 25 26 #if !defined(_LIBCPP_HAS_NO_INCOMPLETE_PSTL) && _LIBCPP_STD_VER >= 17 27 28 _LIBCPP_BEGIN_NAMESPACE_STD 29 30 template <class _ExecutionPolicy, 31 class _ForwardIterator, 32 class _ForwardOutIterator, 33 class _UnaryOperation, 34 class _RawPolicy = __remove_cvref_t<_ExecutionPolicy>, 35 enable_if_t<is_execution_policy_v<_RawPolicy>, int> = 0> 36 _LIBCPP_HIDE_FROM_ABI _ForwardOutIterator transform( 37 _ExecutionPolicy&&, 38 _ForwardIterator __first, 39 _ForwardIterator __last, 40 _ForwardOutIterator __result, 41 _UnaryOperation __op) { 42 _LIBCPP_REQUIRE_CPP17_FORWARD_ITERATOR(_ForwardIterator); 43 _LIBCPP_REQUIRE_CPP17_FORWARD_ITERATOR(_ForwardOutIterator); 44 _LIBCPP_REQUIRE_CPP17_OUTPUT_ITERATOR(_ForwardOutIterator, decltype(__op(*__first))); 45 using _Backend = typename __select_backend<_RawPolicy>::type; 46 return std::__pstl_transform<_RawPolicy>( 47 _Backend{}, std::move(__first), std::move(__last), std::move(__result), std::move(__op)); 48 } 49 50 template <class _ExecutionPolicy, 51 class _ForwardIterator1, 52 class _ForwardIterator2, 53 class _ForwardOutIterator, 54 class _BinaryOperation, 55 class _RawPolicy = __remove_cvref_t<_ExecutionPolicy>, 56 enable_if_t<is_execution_policy_v<_RawPolicy>, int> = 0> 57 _LIBCPP_HIDE_FROM_ABI _ForwardOutIterator transform( 58 _ExecutionPolicy&&, 59 _ForwardIterator1 __first1, 60 _ForwardIterator1 __last1, 61 _ForwardIterator2 __first2, 62 _ForwardOutIterator __result, 63 _BinaryOperation __op) { 64 _LIBCPP_REQUIRE_CPP17_FORWARD_ITERATOR(_ForwardIterator1); 65 _LIBCPP_REQUIRE_CPP17_FORWARD_ITERATOR(_ForwardIterator2); 66 _LIBCPP_REQUIRE_CPP17_FORWARD_ITERATOR(_ForwardOutIterator); 67 _LIBCPP_REQUIRE_CPP17_OUTPUT_ITERATOR(_ForwardOutIterator, decltype(__op(*__first1, *__first2))); 68 using _Backend = typename __select_backend<_RawPolicy>::type; 69 return std::__pstl_transform<_RawPolicy>( 70 _Backend{}, std::move(__first1), std::move(__last1), std::move(__first2), std::move(__result), std::move(__op)); 71 } 72 73 _LIBCPP_END_NAMESPACE_STD 74 75 #endif // !defined(_LIBCPP_HAS_NO_INCOMPLETE_PSTL) && _LIBCPP_STD_VER >= 17 76 77 #endif // _LIBCPP___ALGORITHM_PSTL_TRANSFORM_H 78