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70 lines
1.7 KiB
70 lines
1.7 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 adjacent_difference.h |
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* \brief Sequential implementation of adjacent_difference. |
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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/iterator/iterator_traits.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 OutputIterator, |
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typename BinaryFunction> |
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OutputIterator adjacent_difference(InputIterator first, |
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InputIterator last, |
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OutputIterator result, |
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BinaryFunction binary_op) |
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{ |
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typedef typename thrust::iterator_traits<InputIterator>::value_type InputType; |
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if (first == last) |
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return result; |
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InputType curr = *first; |
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*result = curr; |
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while (++first != last) |
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{ |
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InputType next = *first; |
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*(++result) = binary_op(next, curr); |
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curr = next; |
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} |
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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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