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69 lines
1.5 KiB
69 lines
1.5 KiB
/* |
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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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