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70 lines
1.5 KiB
70 lines
1.5 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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/*! \file reduce.h
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* \brief Sequential implementation of reduce algorithm.
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*/
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#pragma once
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#include <thrust/detail/config.h>
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#include <thrust/detail/function.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 internal
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{
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namespace scalar
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{
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template<typename InputIterator,
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typename OutputType,
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typename BinaryFunction>
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OutputType reduce(InputIterator begin,
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InputIterator end,
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OutputType init,
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BinaryFunction binary_op)
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{
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// wrap binary_op
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thrust::detail::host_function<
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BinaryFunction,
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OutputType
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> wrapped_binary_op(binary_op);
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// initialize the result
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OutputType result = init;
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while(begin != end)
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{
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result = wrapped_binary_op(result, *begin);
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++begin;
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} // end while
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return result;
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}
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} // end namespace scalar
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} // end namespace internal
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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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