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70 lines
2.5 KiB
70 lines
2.5 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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#include <thrust/detail/config.h> |
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#include <thrust/system/detail/generic/inner_product.h> |
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#include <thrust/functional.h> |
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#include <thrust/detail/internal_functional.h> |
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#include <thrust/transform_reduce.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, typename InputIterator1, typename InputIterator2, typename OutputType> |
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OutputType inner_product(thrust::execution_policy<DerivedPolicy> &exec, |
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InputIterator1 first1, |
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InputIterator1 last1, |
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InputIterator2 first2, |
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OutputType init) |
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{ |
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thrust::plus<OutputType> binary_op1; |
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thrust::multiplies<OutputType> binary_op2; |
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return thrust::inner_product(exec, first1, last1, first2, init, binary_op1, binary_op2); |
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} // end inner_product() |
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template<typename DerivedPolicy, typename InputIterator1, typename InputIterator2, typename OutputType, typename BinaryFunction1, typename BinaryFunction2> |
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OutputType inner_product(thrust::execution_policy<DerivedPolicy> &exec, |
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InputIterator1 first1, |
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InputIterator1 last1, |
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InputIterator2 first2, |
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OutputType init, |
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BinaryFunction1 binary_op1, |
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BinaryFunction2 binary_op2) |
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{ |
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typedef thrust::zip_iterator<thrust::tuple<InputIterator1,InputIterator2> > ZipIter; |
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ZipIter first = thrust::make_zip_iterator(thrust::make_tuple(first1,first2)); |
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// only the first iterator in the tuple is relevant for the purposes of last |
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ZipIter last = thrust::make_zip_iterator(thrust::make_tuple(last1, first2)); |
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return thrust::transform_reduce(exec, first, last, thrust::detail::zipped_binary_op<OutputType,BinaryFunction2>(binary_op2), init, binary_op1); |
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} // end inner_product() |
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} // end generic |
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} // end detail |
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} // end system |
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} // end thrust |
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