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225 lines
11 KiB
C++
225 lines
11 KiB
C++
// -*- C++ -*-
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//===-- glue_numeric_impl.h -----------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#ifndef __PSTL_glue_numeric_impl_H
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#define __PSTL_glue_numeric_impl_H
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#include <functional>
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#include "utils.h"
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#include "numeric_fwd.h"
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namespace std
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{
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// [reduce]
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template <class _ExecutionPolicy, class _ForwardIterator, class _Tp, class _BinaryOperation>
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__pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _Tp>
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reduce(_ExecutionPolicy&& __exec, _ForwardIterator __first, _ForwardIterator __last, _Tp __init,
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_BinaryOperation __binary_op)
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{
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return transform_reduce(std::forward<_ExecutionPolicy>(__exec), __first, __last, __init, __binary_op,
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__pstl::__internal::__no_op());
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}
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template <class _ExecutionPolicy, class _ForwardIterator, class _Tp>
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__pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _Tp>
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reduce(_ExecutionPolicy&& __exec, _ForwardIterator __first, _ForwardIterator __last, _Tp __init)
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{
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return transform_reduce(std::forward<_ExecutionPolicy>(__exec), __first, __last, __init, std::plus<_Tp>(),
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__pstl::__internal::__no_op());
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}
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template <class _ExecutionPolicy, class _ForwardIterator>
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__pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy,
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typename iterator_traits<_ForwardIterator>::value_type>
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reduce(_ExecutionPolicy&& __exec, _ForwardIterator __first, _ForwardIterator __last)
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{
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typedef typename iterator_traits<_ForwardIterator>::value_type _ValueType;
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return transform_reduce(std::forward<_ExecutionPolicy>(__exec), __first, __last, _ValueType{},
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std::plus<_ValueType>(), __pstl::__internal::__no_op());
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}
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// [transform.reduce]
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template <class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2, class _Tp>
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__pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _Tp>
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transform_reduce(_ExecutionPolicy&& __exec, _ForwardIterator1 __first1, _ForwardIterator1 __last1,
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_ForwardIterator2 __first2, _Tp __init)
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{
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typedef typename iterator_traits<_ForwardIterator1>::value_type _InputType;
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using namespace __pstl;
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return __internal::__pattern_transform_reduce(
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std::forward<_ExecutionPolicy>(__exec), __first1, __last1, __first2, __init, std::plus<_InputType>(),
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std::multiplies<_InputType>(),
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__internal::__is_vectorization_preferred<_ExecutionPolicy, _ForwardIterator1, _ForwardIterator2>(__exec),
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__internal::__is_parallelization_preferred<_ExecutionPolicy, _ForwardIterator1, _ForwardIterator2>(__exec));
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}
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template <class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2, class _Tp, class _BinaryOperation1,
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class _BinaryOperation2>
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__pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _Tp>
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transform_reduce(_ExecutionPolicy&& __exec, _ForwardIterator1 __first1, _ForwardIterator1 __last1,
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_ForwardIterator2 __first2, _Tp __init, _BinaryOperation1 __binary_op1, _BinaryOperation2 __binary_op2)
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{
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using namespace __pstl;
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return __internal::__pattern_transform_reduce(
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std::forward<_ExecutionPolicy>(__exec), __first1, __last1, __first2, __init, __binary_op1, __binary_op2,
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__internal::__is_vectorization_preferred<_ExecutionPolicy, _ForwardIterator1, _ForwardIterator2>(__exec),
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__internal::__is_parallelization_preferred<_ExecutionPolicy, _ForwardIterator1, _ForwardIterator2>(__exec));
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}
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template <class _ExecutionPolicy, class _ForwardIterator, class _Tp, class _BinaryOperation, class _UnaryOperation>
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__pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _Tp>
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transform_reduce(_ExecutionPolicy&& __exec, _ForwardIterator __first, _ForwardIterator __last, _Tp __init,
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_BinaryOperation __binary_op, _UnaryOperation __unary_op)
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{
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using namespace __pstl;
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return __internal::__pattern_transform_reduce(
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std::forward<_ExecutionPolicy>(__exec), __first, __last, __init, __binary_op, __unary_op,
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__internal::__is_vectorization_preferred<_ExecutionPolicy, _ForwardIterator>(__exec),
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__internal::__is_parallelization_preferred<_ExecutionPolicy, _ForwardIterator>(__exec));
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}
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// [exclusive.scan]
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template <class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2, class _Tp>
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__pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator2>
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exclusive_scan(_ExecutionPolicy&& __exec, _ForwardIterator1 __first, _ForwardIterator1 __last,
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_ForwardIterator2 __result, _Tp __init)
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{
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return transform_exclusive_scan(std::forward<_ExecutionPolicy>(__exec), __first, __last, __result, __init,
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std::plus<_Tp>(), __pstl::__internal::__no_op());
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}
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template <class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2, class _Tp, class _BinaryOperation>
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_ForwardIterator2
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exclusive_scan(_ExecutionPolicy&& __exec, _ForwardIterator1 __first, _ForwardIterator1 __last,
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_ForwardIterator2 __result, _Tp __init, _BinaryOperation __binary_op)
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{
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return transform_exclusive_scan(std::forward<_ExecutionPolicy>(__exec), __first, __last, __result, __init,
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__binary_op, __pstl::__internal::__no_op());
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}
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// [inclusive.scan]
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template <class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2>
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__pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator2>
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inclusive_scan(_ExecutionPolicy&& __exec, _ForwardIterator1 __first, _ForwardIterator1 __last,
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_ForwardIterator2 __result)
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{
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typedef typename iterator_traits<_ForwardIterator1>::value_type _InputType;
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return transform_inclusive_scan(std::forward<_ExecutionPolicy>(__exec), __first, __last, __result,
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std::plus<_InputType>(), __pstl::__internal::__no_op());
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}
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template <class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2, class _BinaryOperation>
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__pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator2>
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inclusive_scan(_ExecutionPolicy&& __exec, _ForwardIterator1 __first, _ForwardIterator1 __last,
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_ForwardIterator2 __result, _BinaryOperation __binary_op)
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{
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return transform_inclusive_scan(std::forward<_ExecutionPolicy>(__exec), __first, __last, __result, __binary_op,
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__pstl::__internal::__no_op());
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}
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template <class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2, class _Tp, class _BinaryOperation>
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__pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator2>
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inclusive_scan(_ExecutionPolicy&& __exec, _ForwardIterator1 __first, _ForwardIterator1 __last,
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_ForwardIterator2 __result, _BinaryOperation __binary_op, _Tp __init)
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{
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return transform_inclusive_scan(std::forward<_ExecutionPolicy>(__exec), __first, __last, __result, __binary_op,
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__pstl::__internal::__no_op(), __init);
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}
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// [transform.exclusive.scan]
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template <class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2, class _Tp, class _BinaryOperation,
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class _UnaryOperation>
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__pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator2>
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transform_exclusive_scan(_ExecutionPolicy&& __exec, _ForwardIterator1 __first, _ForwardIterator1 __last,
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_ForwardIterator2 __result, _Tp __init, _BinaryOperation __binary_op,
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_UnaryOperation __unary_op)
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{
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using namespace __pstl;
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return __internal::__pattern_transform_scan(
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std::forward<_ExecutionPolicy>(__exec), __first, __last, __result, __unary_op, __init, __binary_op,
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/*inclusive=*/std::false_type(),
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__internal::__is_vectorization_preferred<_ExecutionPolicy, _ForwardIterator1, _ForwardIterator2>(__exec),
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__internal::__is_parallelization_preferred<_ExecutionPolicy, _ForwardIterator1, _ForwardIterator2>(__exec));
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}
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// [transform.inclusive.scan]
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template <class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2, class _BinaryOperation,
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class _UnaryOperation, class _Tp>
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__pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator2>
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transform_inclusive_scan(_ExecutionPolicy&& __exec, _ForwardIterator1 __first, _ForwardIterator1 __last,
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_ForwardIterator2 __result, _BinaryOperation __binary_op, _UnaryOperation __unary_op,
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_Tp __init)
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{
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using namespace __pstl;
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return __internal::__pattern_transform_scan(
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std::forward<_ExecutionPolicy>(__exec), __first, __last, __result, __unary_op, __init, __binary_op,
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/*inclusive=*/std::true_type(),
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__internal::__is_vectorization_preferred<_ExecutionPolicy, _ForwardIterator1, _ForwardIterator2>(__exec),
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__internal::__is_parallelization_preferred<_ExecutionPolicy, _ForwardIterator1, _ForwardIterator2>(__exec));
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}
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template <class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2, class _UnaryOperation,
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class _BinaryOperation>
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__pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator2>
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transform_inclusive_scan(_ExecutionPolicy&& __exec, _ForwardIterator1 __first, _ForwardIterator1 __last,
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_ForwardIterator2 __result, _BinaryOperation __binary_op, _UnaryOperation __unary_op)
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{
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if (__first != __last)
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{
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auto __tmp = __unary_op(*__first);
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*__result = __tmp;
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return transform_inclusive_scan(std::forward<_ExecutionPolicy>(__exec), ++__first, __last, ++__result,
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__binary_op, __unary_op, __tmp);
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}
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else
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{
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return __result;
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}
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}
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// [adjacent.difference]
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template <class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2, class _BinaryOperation>
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__pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator2>
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adjacent_difference(_ExecutionPolicy&& __exec, _ForwardIterator1 __first, _ForwardIterator1 __last,
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_ForwardIterator2 __d_first, _BinaryOperation __op)
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{
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if (__first == __last)
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return __d_first;
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using namespace __pstl;
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return __internal::__pattern_adjacent_difference(
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std::forward<_ExecutionPolicy>(__exec), __first, __last, __d_first, __op,
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__internal::__is_vectorization_preferred<_ExecutionPolicy, _ForwardIterator1, _ForwardIterator2>(__exec),
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__internal::__is_parallelization_preferred<_ExecutionPolicy, _ForwardIterator1, _ForwardIterator2>(__exec));
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}
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template <class _ExecutionPolicy, class _ForwardIterator1, class _ForwardIterator2>
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__pstl::__internal::__enable_if_execution_policy<_ExecutionPolicy, _ForwardIterator2>
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adjacent_difference(_ExecutionPolicy&& __exec, _ForwardIterator1 __first, _ForwardIterator1 __last,
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_ForwardIterator2 __d_first)
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{
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typedef typename iterator_traits<_ForwardIterator1>::value_type _ValueType;
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return adjacent_difference(std::forward<_ExecutionPolicy>(__exec), __first, __last, __d_first,
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std::minus<_ValueType>());
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}
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} // namespace std
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#endif /* __PSTL_glue_numeric_impl_H_ */
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