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93 lines
3.0 KiB
93 lines
3.0 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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#include <thrust/detail/config.h> |
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#include <thrust/system/detail/generic/scatter.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/transform.h> |
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#include <thrust/iterator/permutation_iterator.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 DerivedPolicy, |
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typename InputIterator1, |
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typename InputIterator2, |
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typename RandomAccessIterator> |
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void scatter(thrust::execution_policy<DerivedPolicy> &exec, |
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InputIterator1 first, |
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InputIterator1 last, |
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InputIterator2 map, |
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RandomAccessIterator output) |
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{ |
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thrust::transform(exec, |
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first, |
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last, |
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thrust::make_permutation_iterator(output, map), |
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thrust::identity<typename thrust::iterator_value<InputIterator1>::type>()); |
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} // end scatter() |
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template<typename DerivedPolicy, |
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typename InputIterator1, |
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typename InputIterator2, |
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typename InputIterator3, |
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typename RandomAccessIterator> |
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void scatter_if(thrust::execution_policy<DerivedPolicy> &exec, |
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InputIterator1 first, |
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InputIterator1 last, |
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InputIterator2 map, |
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InputIterator3 stencil, |
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RandomAccessIterator output) |
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{ |
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// default predicate is identity |
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typedef typename thrust::iterator_value<InputIterator3>::type StencilType; |
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thrust::scatter_if(exec, first, last, map, stencil, output, thrust::identity<StencilType>()); |
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} // end scatter_if() |
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template<typename DerivedPolicy, |
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typename InputIterator1, |
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typename InputIterator2, |
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typename InputIterator3, |
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typename RandomAccessIterator, |
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typename Predicate> |
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void scatter_if(thrust::execution_policy<DerivedPolicy> &exec, |
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InputIterator1 first, |
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InputIterator1 last, |
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InputIterator2 map, |
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InputIterator3 stencil, |
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RandomAccessIterator output, |
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Predicate pred) |
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{ |
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typedef typename thrust::iterator_value<InputIterator1>::type InputType; |
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thrust::transform_if(exec, first, last, stencil, thrust::make_permutation_iterator(output, map), thrust::identity<InputType>(), pred); |
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} // end scatter_if() |
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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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