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75 lines
2.2 KiB
75 lines
2.2 KiB
11 years ago
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/*
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* Copyright 2008-2012 NVIDIA Corporation
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#pragma once
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#include <thrust/reduce.h>
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#include <thrust/system/detail/generic/reduce.h>
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#include <thrust/iterator/iterator_traits.h>
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#include <thrust/functional.h>
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#include <thrust/detail/static_assert.h>
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namespace thrust
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{
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namespace system
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{
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namespace detail
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{
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namespace generic
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{
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template<typename ExecutionPolicy, typename InputIterator>
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typename thrust::iterator_traits<InputIterator>::value_type
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reduce(thrust::execution_policy<ExecutionPolicy> &exec, InputIterator first, InputIterator last)
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{
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typedef typename thrust::iterator_value<InputIterator>::type InputType;
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// use InputType(0) as init by default
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return thrust::reduce(exec, first, last, InputType(0));
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} // end reduce()
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template<typename ExecutionPolicy, typename InputIterator, typename T>
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T reduce(thrust::execution_policy<ExecutionPolicy> &exec, InputIterator first, InputIterator last, T init)
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{
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// use plus<T> by default
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return thrust::reduce(exec, first, last, init, thrust::plus<T>());
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} // end reduce()
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template<typename ExecutionPolicy,
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typename RandomAccessIterator,
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typename OutputType,
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typename BinaryFunction>
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OutputType reduce(thrust::execution_policy<ExecutionPolicy> &exec,
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RandomAccessIterator first,
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RandomAccessIterator last,
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OutputType init,
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BinaryFunction binary_op)
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{
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// unimplemented
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THRUST_STATIC_ASSERT( (thrust::detail::depend_on_instantiation<RandomAccessIterator, false>::value) );
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return OutputType();
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} // end reduce()
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} // end namespace generic
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} // end namespace detail
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} // end namespace system
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} // end namespace thrust
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