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//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#ifndef _LIBCPP___NUMERIC_PSTL_H
#define _LIBCPP___NUMERIC_PSTL_H
#include <__config>
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
# pragma GCC system_header
#endif
_LIBCPP_PUSH_MACROS
#include <__undef_macros>
#if !defined(_LIBCPP_HAS_NO_INCOMPLETE_PSTL) && _LIBCPP_STD_VER >= 17
# include <__functional/identity.h>
# include <__functional/operations.h>
# include <__iterator/cpp17_iterator_concepts.h>
# include <__iterator/iterator_traits.h>
# include <__pstl/backend.h>
# include <__pstl/dispatch.h>
# include <__pstl/handle_exception.h>
# include <__type_traits/enable_if.h>
# include <__type_traits/is_execution_policy.h>
# include <__type_traits/remove_cvref.h>
# include <__utility/forward.h>
# include <__utility/move.h>
_LIBCPP_BEGIN_NAMESPACE_STD
template <class _ExecutionPolicy,
class _ForwardIterator,
class _Tp,
class _BinaryOperation,
class _RawPolicy = __remove_cvref_t<_ExecutionPolicy>,
enable_if_t<is_execution_policy_v<_RawPolicy>, int> = 0>
_LIBCPP_HIDE_FROM_ABI _Tp reduce(
_ExecutionPolicy&& __policy, _ForwardIterator __first, _ForwardIterator __last, _Tp __init, _BinaryOperation __op) {
_LIBCPP_REQUIRE_CPP17_FORWARD_ITERATOR(_ForwardIterator, "reduce requires ForwardIterators");
using _Implementation = __pstl::__dispatch<__pstl::__reduce, __pstl::__current_configuration, _RawPolicy>;
return __pstl::__handle_exception<_Implementation>(
std::forward<_ExecutionPolicy>(__policy),
std::move(__first),
std::move(__last),
std::move(__init),
std::move(__op));
}
template <class _ExecutionPolicy,
class _ForwardIterator,
class _Tp,
class _RawPolicy = __remove_cvref_t<_ExecutionPolicy>,
enable_if_t<is_execution_policy_v<_RawPolicy>, int> = 0>
_LIBCPP_HIDE_FROM_ABI _Tp
reduce(_ExecutionPolicy&& __policy, _ForwardIterator __first, _ForwardIterator __last, _Tp __init) {
_LIBCPP_REQUIRE_CPP17_FORWARD_ITERATOR(_ForwardIterator, "reduce requires ForwardIterators");
using _Implementation = __pstl::__dispatch<__pstl::__reduce, __pstl::__current_configuration, _RawPolicy>;
return __pstl::__handle_exception<_Implementation>(
std::forward<_ExecutionPolicy>(__policy), std::move(__first), std::move(__last), std::move(__init), plus{});
}
template <class _ExecutionPolicy,
class _ForwardIterator,
class _RawPolicy = __remove_cvref_t<_ExecutionPolicy>,
enable_if_t<is_execution_policy_v<_RawPolicy>, int> = 0>
_LIBCPP_HIDE_FROM_ABI __iter_value_type<_ForwardIterator>
reduce(_ExecutionPolicy&& __policy, _ForwardIterator __first, _ForwardIterator __last) {
_LIBCPP_REQUIRE_CPP17_FORWARD_ITERATOR(_ForwardIterator, "reduce requires ForwardIterators");
using _Implementation = __pstl::__dispatch<__pstl::__reduce, __pstl::__current_configuration, _RawPolicy>;
return __pstl::__handle_exception<_Implementation>(
std::forward<_ExecutionPolicy>(__policy),
std::move(__first),
std::move(__last),
__iter_value_type<_ForwardIterator>(),
plus{});
}
template <class _ExecutionPolicy,
class _ForwardIterator1,
class _ForwardIterator2,
class _Tp,
class _BinaryOperation1,
class _BinaryOperation2,
class _RawPolicy = __remove_cvref_t<_ExecutionPolicy>,
enable_if_t<is_execution_policy_v<_RawPolicy>, int> = 0>
_LIBCPP_HIDE_FROM_ABI _Tp transform_reduce(
_ExecutionPolicy&& __policy,
_ForwardIterator1 __first1,
_ForwardIterator1 __last1,
_ForwardIterator2 __first2,
_Tp __init,
_BinaryOperation1 __reduce,
_BinaryOperation2 __transform) {
_LIBCPP_REQUIRE_CPP17_FORWARD_ITERATOR(_ForwardIterator1, "transform_reduce requires ForwardIterators");
_LIBCPP_REQUIRE_CPP17_FORWARD_ITERATOR(_ForwardIterator2, "transform_reduce requires ForwardIterators");
using _Implementation =
__pstl::__dispatch<__pstl::__transform_reduce_binary, __pstl::__current_configuration, _RawPolicy>;
return __pstl::__handle_exception<_Implementation>(
std::forward<_ExecutionPolicy>(__policy),
std::move(__first1),
std::move(__last1),
std::move(__first2),
std::move(__init),
std::move(__reduce),
std::move(__transform));
}
// This overload doesn't get a customization point because it's trivial to detect (through e.g.
// __desugars_to_v) when specializing the more general variant, which should always be preferred
template <class _ExecutionPolicy,
class _ForwardIterator1,
class _ForwardIterator2,
class _Tp,
class _RawPolicy = __remove_cvref_t<_ExecutionPolicy>,
enable_if_t<is_execution_policy_v<_RawPolicy>, int> = 0>
_LIBCPP_HIDE_FROM_ABI _Tp transform_reduce(
_ExecutionPolicy&& __policy,
_ForwardIterator1 __first1,
_ForwardIterator1 __last1,
_ForwardIterator2 __first2,
_Tp __init) {
_LIBCPP_REQUIRE_CPP17_FORWARD_ITERATOR(_ForwardIterator1, "transform_reduce requires ForwardIterators");
_LIBCPP_REQUIRE_CPP17_FORWARD_ITERATOR(_ForwardIterator2, "transform_reduce requires ForwardIterators");
using _Implementation =
__pstl::__dispatch<__pstl::__transform_reduce_binary, __pstl::__current_configuration, _RawPolicy>;
return __pstl::__handle_exception<_Implementation>(
std::forward<_ExecutionPolicy>(__policy),
std::move(__first1),
std::move(__last1),
std::move(__first2),
std::move(__init),
plus{},
multiplies{});
}
template <class _ExecutionPolicy,
class _ForwardIterator,
class _Tp,
class _BinaryOperation,
class _UnaryOperation,
class _RawPolicy = __remove_cvref_t<_ExecutionPolicy>,
enable_if_t<is_execution_policy_v<_RawPolicy>, int> = 0>
_LIBCPP_HIDE_FROM_ABI _Tp transform_reduce(
_ExecutionPolicy&& __policy,
_ForwardIterator __first,
_ForwardIterator __last,
_Tp __init,
_BinaryOperation __reduce,
_UnaryOperation __transform) {
_LIBCPP_REQUIRE_CPP17_FORWARD_ITERATOR(_ForwardIterator, "transform_reduce requires ForwardIterators");
using _Implementation = __pstl::__dispatch<__pstl::__transform_reduce, __pstl::__current_configuration, _RawPolicy>;
return __pstl::__handle_exception<_Implementation>(
std::forward<_ExecutionPolicy>(__policy),
std::move(__first),
std::move(__last),
std::move(__init),
std::move(__reduce),
std::move(__transform));
}
_LIBCPP_END_NAMESPACE_STD
#endif // !defined(_LIBCPP_HAS_NO_INCOMPLETE_PSTL) && _LIBCPP_STD_VER >= 17
_LIBCPP_POP_MACROS
#endif // _LIBCPP___NUMERIC_PSTL_H
|
