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_MERGE_H 10 #define _LIBCPP___ALGORITHM_PSTL_MERGE_H 11 12 #include <__algorithm/pstl_backend.h> 13 #include <__config> 14 #include <__functional/operations.h> 15 #include <__type_traits/enable_if.h> 16 #include <__type_traits/is_execution_policy.h> 17 #include <__type_traits/remove_cvref.h> 18 #include <__utility/move.h> 19 20 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 21 # pragma GCC system_header 22 #endif 23 24 #if !defined(_LIBCPP_HAS_NO_INCOMPLETE_PSTL) && _LIBCPP_STD_VER >= 17 25 26 _LIBCPP_BEGIN_NAMESPACE_STD 27 28 template <class _ExecutionPolicy, 29 class _ForwardIterator1, 30 class _ForwardIterator2, 31 class _ForwardOutIterator, 32 class _Comp = std::less<>, 33 class _RawPolicy = __remove_cvref_t<_ExecutionPolicy>, 34 enable_if_t<is_execution_policy_v<_RawPolicy>, int> = 0> 35 _LIBCPP_HIDE_FROM_ABI _ForwardOutIterator 36 merge(_ExecutionPolicy&&, 37 _ForwardIterator1 __first1, 38 _ForwardIterator1 __last1, 39 _ForwardIterator2 __first2, 40 _ForwardIterator2 __last2, 41 _ForwardOutIterator __result, 42 _Comp __comp = {}) { 43 using _Backend = typename __select_backend<_RawPolicy>::type; 44 return std::__pstl_merge<_RawPolicy>( 45 _Backend{}, 46 std::move(__first1), 47 std::move(__last1), 48 std::move(__first2), 49 std::move(__last2), 50 std::move(__result), 51 std::move(__comp)); 52 } 53 54 _LIBCPP_END_NAMESPACE_STD 55 56 #endif // !defined(_LIBCPP_HAS_NO_INCOMPLETE_PSTL) && _LIBCPP_STD_VER >= 17 57 58 #endif // _LIBCPP___ALGORITHM_PSTL_MERGE_H 59