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2947 lines
179 KiB
2947 lines
179 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 set_operations.h |
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* \brief Set theoretic operations for sorted ranges |
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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/execution_policy.h> |
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#include <thrust/pair.h> |
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|
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namespace thrust |
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{ |
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/*! \addtogroup set_operations Set Operations |
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* \ingroup algorithms |
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* \{ |
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*/ |
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|
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|
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/*! \p set_difference constructs a sorted range that is the set difference of the sorted |
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* ranges <tt>[first1, last1)</tt> and <tt>[first2, last2)</tt>. The return value is the |
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* end of the output range. |
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* |
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* In the simplest case, \p set_difference performs the "difference" operation from set |
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* theory: the output range contains a copy of every element that is contained in |
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* <tt>[first1, last1)</tt> and not contained in <tt>[first2, last1)</tt>. The general case |
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* is more complicated, because the input ranges may contain duplicate elements. |
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* The generalization is that if <tt>[first1, last1)</tt> contains \c m elements |
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* that are equivalent to each other and if <tt>[first2, last2)</tt> contains \c n |
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* elements that are equivalent to them, the last <tt>max(m-n,0)</tt> elements from |
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* <tt>[first1, last1)</tt> range shall be copied to the output range. |
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* |
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* This version of \p set_difference compares elements using \c operator<. |
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* |
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* The algorithm's execution is parallelized as determined by \p exec. |
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* |
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* \param exec The execution policy to use for parallelization. |
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* \param first1 The beginning of the first input range. |
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* \param last1 The end of the first input range. |
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* \param first2 The beginning of the second input range. |
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* \param last2 The end of the second input range. |
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* \param result The beginning of the output range. |
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* \return The end of the output range. |
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* |
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* \tparam DerivedPolicy The name of the derived execution policy. |
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* \tparam InputIterator1 is a model of <a href="http://www.sgi.com/tech/stl/InputIterator.html">Input Iterator</a>, |
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* \p InputIterator1 and \p InputIterator2 have the same \c value_type, |
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* \p InputIterator1's \c value_type is a model of <a href="http://www.sgi.com/tech/stl/LessThanComparable">LessThan Comparable</a>, |
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* the ordering on \p InputIterator1's \c value_type is a strict weak ordering, as defined in the <a href="http://www.sgi.com/tech/stl/LessThanComparable">LessThan Comparable</a> requirements, |
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* and \p InputIterator1's \c value_type is convertable to a type in \p OutputIterator's set of \c value_types. |
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* \tparam InputIterator2 is a model of <a href="http://www.sgi.com/tech/stl/InputIterator.html">Input Iterator</a>, |
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* \p InputIterator2 and \p InputIterator1 have the same \c value_type, |
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* \p InputIterator2's \c value_type is a model of <a href="http://www.sgi.com/tech/stl/LessThanComparable">LessThan Comparable</a>, |
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* the ordering on \p InputIterator2's \c value_type is a strict weak ordering, as defined in the <a href="http://www.sgi.com/tech/stl/LessThanComparable">LessThan Comparable</a> requirements, |
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* and \p InputIterator2's \c value_type is convertable to a type in \p OutputIterator's set of \c value_types. |
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* \tparam OutputIterator is a model of <a href="http://www.sgi.com/tech/stl/OutputIterator.html">Output Iterator</a>. |
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* |
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* \pre The ranges <tt>[first1, last1)</tt> and <tt>[first2, last2)</tt> shall be sorted with respect to <tt>operator<</tt>. |
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* \pre The resulting range shall not overlap with either input range. |
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* |
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* The following code snippet demonstrates how to use \p set_difference to compute the |
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* set difference of two sets of integers sorted in ascending order using the \p thrust::host execution |
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* policy for parallelization: |
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* |
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* \code |
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* #include <thrust/set_operations.h> |
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* #include <thrust/execution_policy.h> |
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* ... |
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* int A1[6] = {0, 1, 3, 4, 5, 6, 9}; |
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* int A2[5] = {1, 3, 5, 7, 9}; |
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* |
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* int result[3]; |
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* |
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* int *result_end = thrust::set_difference(thrust::host, A1, A1 + 6, A2, A2 + 5, result); |
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* // result is now {0, 4, 6} |
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* \endcode |
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* |
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* \see http://www.sgi.com/tech/stl/set_difference.html |
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* \see \p includes |
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* \see \p set_union |
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* \see \p set_intersection |
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* \see \p set_symmetric_difference |
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* \see \p sort |
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* \see \p is_sorted |
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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 OutputIterator> |
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OutputIterator set_difference(const thrust::detail::execution_policy_base<DerivedPolicy> &exec, |
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InputIterator1 first1, |
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InputIterator1 last1, |
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InputIterator2 first2, |
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InputIterator2 last2, |
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OutputIterator result); |
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|
|
|
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/*! \p set_difference constructs a sorted range that is the set difference of the sorted |
|
* ranges <tt>[first1, last1)</tt> and <tt>[first2, last2)</tt>. The return value is the |
|
* end of the output range. |
|
* |
|
* In the simplest case, \p set_difference performs the "difference" operation from set |
|
* theory: the output range contains a copy of every element that is contained in |
|
* <tt>[first1, last1)</tt> and not contained in <tt>[first2, last1)</tt>. The general case |
|
* is more complicated, because the input ranges may contain duplicate elements. |
|
* The generalization is that if <tt>[first1, last1)</tt> contains \c m elements |
|
* that are equivalent to each other and if <tt>[first2, last2)</tt> contains \c n |
|
* elements that are equivalent to them, the last <tt>max(m-n,0)</tt> elements from |
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* <tt>[first1, last1)</tt> range shall be copied to the output range. |
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* |
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* This version of \p set_difference compares elements using \c operator<. |
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* |
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* \param first1 The beginning of the first input range. |
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* \param last1 The end of the first input range. |
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* \param first2 The beginning of the second input range. |
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* \param last2 The end of the second input range. |
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* \param result The beginning of the output range. |
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* \return The end of the output range. |
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* |
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* \tparam InputIterator1 is a model of <a href="http://www.sgi.com/tech/stl/InputIterator.html">Input Iterator</a>, |
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* \p InputIterator1 and \p InputIterator2 have the same \c value_type, |
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* \p InputIterator1's \c value_type is a model of <a href="http://www.sgi.com/tech/stl/LessThanComparable">LessThan Comparable</a>, |
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* the ordering on \p InputIterator1's \c value_type is a strict weak ordering, as defined in the <a href="http://www.sgi.com/tech/stl/LessThanComparable">LessThan Comparable</a> requirements, |
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* and \p InputIterator1's \c value_type is convertable to a type in \p OutputIterator's set of \c value_types. |
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* \tparam InputIterator2 is a model of <a href="http://www.sgi.com/tech/stl/InputIterator.html">Input Iterator</a>, |
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* \p InputIterator2 and \p InputIterator1 have the same \c value_type, |
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* \p InputIterator2's \c value_type is a model of <a href="http://www.sgi.com/tech/stl/LessThanComparable">LessThan Comparable</a>, |
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* the ordering on \p InputIterator2's \c value_type is a strict weak ordering, as defined in the <a href="http://www.sgi.com/tech/stl/LessThanComparable">LessThan Comparable</a> requirements, |
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* and \p InputIterator2's \c value_type is convertable to a type in \p OutputIterator's set of \c value_types. |
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* \tparam OutputIterator is a model of <a href="http://www.sgi.com/tech/stl/OutputIterator.html">Output Iterator</a>. |
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* |
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* \pre The ranges <tt>[first1, last1)</tt> and <tt>[first2, last2)</tt> shall be sorted with respect to <tt>operator<</tt>. |
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* \pre The resulting range shall not overlap with either input range. |
|
* |
|
* The following code snippet demonstrates how to use \p set_difference to compute the |
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* set difference of two sets of integers sorted in ascending order. |
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* |
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* \code |
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* #include <thrust/set_operations.h> |
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* ... |
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* int A1[6] = {0, 1, 3, 4, 5, 6, 9}; |
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* int A2[5] = {1, 3, 5, 7, 9}; |
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* |
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* int result[3]; |
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* |
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* int *result_end = thrust::set_difference(A1, A1 + 6, A2, A2 + 5, result); |
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* // result is now {0, 4, 6} |
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* \endcode |
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* |
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* \see http://www.sgi.com/tech/stl/set_difference.html |
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* \see \p includes |
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* \see \p set_union |
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* \see \p set_intersection |
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* \see \p set_symmetric_difference |
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* \see \p sort |
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* \see \p is_sorted |
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*/ |
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template<typename InputIterator1, |
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typename InputIterator2, |
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typename OutputIterator> |
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OutputIterator set_difference(InputIterator1 first1, |
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InputIterator1 last1, |
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InputIterator2 first2, |
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InputIterator2 last2, |
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OutputIterator result); |
|
|
|
|
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/*! \p set_difference constructs a sorted range that is the set difference of the sorted |
|
* ranges <tt>[first1, last1)</tt> and <tt>[first2, last2)</tt>. The return value is the |
|
* end of the output range. |
|
* |
|
* In the simplest case, \p set_difference performs the "difference" operation from set |
|
* theory: the output range contains a copy of every element that is contained in |
|
* <tt>[first1, last1)</tt> and not contained in <tt>[first2, last1)</tt>. The general case |
|
* is more complicated, because the input ranges may contain duplicate elements. |
|
* The generalization is that if <tt>[first1, last1)</tt> contains \c m elements |
|
* that are equivalent to each other and if <tt>[first2, last2)</tt> contains \c n |
|
* elements that are equivalent to them, the last <tt>max(m-n,0)</tt> elements from |
|
* <tt>[first1, last1)</tt> range shall be copied to the output range. |
|
* |
|
* This version of \p set_difference compares elements using a function object \p comp. |
|
* |
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* The algorithm's execution is parallelized as determined by \p exec. |
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* |
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* \param exec The execution policy to use for parallelization. |
|
* \param first1 The beginning of the first input range. |
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* \param last1 The end of the first input range. |
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* \param first2 The beginning of the second input range. |
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* \param last2 The end of the second input range. |
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* \param result The beginning of the output range. |
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* \param comp Comparison operator. |
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* \return The end of the output range. |
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* |
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* \tparam DerivedPolicy The name of the derived execution policy. |
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* \tparam InputIterator1 is a model of <a href="http://www.sgi.com/tech/stl/InputIterator.html">Input Iterator</a>, |
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* \p InputIterator1's \c value_type is convertable to \p StrictWeakCompare's \c first_argument_type. |
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* and \p InputIterator1's \c value_type is convertable to a type in \p OutputIterator's set of \c value_types. |
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* \tparam InputIterator2 is a model of <a href="http://www.sgi.com/tech/stl/InputIterator.html">Input Iterator</a>, |
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* \p InputIterator2's \c value_type is convertable to \p StrictWeakCompare's \c second_argument_type. |
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* and \p InputIterator2's \c value_type is convertable to a type in \p OutputIterator's set of \c value_types. |
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* \tparam OutputIterator is a model of <a href="http://www.sgi.com/tech/stl/OutputIterator.html">Output Iterator</a>. |
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* \tparam StrictWeakCompare is a model of <a href="http://www.sgi.com/tech/stl/StrictWeakOrdering.html">Strict Weak Ordering</a>. |
|
* |
|
* \pre The ranges <tt>[first1, last1)</tt> and <tt>[first2, last2)</tt> shall be sorted with respect to \p comp. |
|
* \pre The resulting range shall not overlap with either input range. |
|
* |
|
* The following code snippet demonstrates how to use \p set_difference to compute the |
|
* set difference of two sets of integers sorted in descending order using the \p thrust::host execution |
|
* policy for parallelization: |
|
* |
|
* \code |
|
* #include <thrust/set_operations.h> |
|
* #include <thrust/functional.h> |
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* #include <thrust/execution_policy.h> |
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* ... |
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* int A1[6] = {9, 6, 5, 4, 3, 1, 0}; |
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* int A2[5] = {9, 7, 5, 3, 1}; |
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* |
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* int result[3]; |
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* |
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* int *result_end = thrust::set_difference(thrust::host, A1, A1 + 6, A2, A2 + 5, result, thrust::greater<int>()); |
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* // result is now {6, 4, 0} |
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* \endcode |
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* |
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* \see http://www.sgi.com/tech/stl/set_difference.html |
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* \see \p includes |
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* \see \p set_union |
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* \see \p set_intersection |
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* \see \p set_symmetric_difference |
|
* \see \p sort |
|
* \see \p is_sorted |
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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 OutputIterator, |
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typename StrictWeakCompare> |
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OutputIterator set_difference(const thrust::detail::execution_policy_base<DerivedPolicy> &exec, |
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InputIterator1 first1, |
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InputIterator1 last1, |
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InputIterator2 first2, |
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InputIterator2 last2, |
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OutputIterator result, |
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StrictWeakCompare comp); |
|
|
|
|
|
/*! \p set_difference constructs a sorted range that is the set difference of the sorted |
|
* ranges <tt>[first1, last1)</tt> and <tt>[first2, last2)</tt>. The return value is the |
|
* end of the output range. |
|
* |
|
* In the simplest case, \p set_difference performs the "difference" operation from set |
|
* theory: the output range contains a copy of every element that is contained in |
|
* <tt>[first1, last1)</tt> and not contained in <tt>[first2, last1)</tt>. The general case |
|
* is more complicated, because the input ranges may contain duplicate elements. |
|
* The generalization is that if <tt>[first1, last1)</tt> contains \c m elements |
|
* that are equivalent to each other and if <tt>[first2, last2)</tt> contains \c n |
|
* elements that are equivalent to them, the last <tt>max(m-n,0)</tt> elements from |
|
* <tt>[first1, last1)</tt> range shall be copied to the output range. |
|
* |
|
* This version of \p set_difference compares elements using a function object \p comp. |
|
* |
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* \param first1 The beginning of the first input range. |
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* \param last1 The end of the first input range. |
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* \param first2 The beginning of the second input range. |
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* \param last2 The end of the second input range. |
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* \param result The beginning of the output range. |
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* \param comp Comparison operator. |
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* \return The end of the output range. |
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* |
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* \tparam InputIterator1 is a model of <a href="http://www.sgi.com/tech/stl/InputIterator.html">Input Iterator</a>, |
|
* \p InputIterator1's \c value_type is convertable to \p StrictWeakCompare's \c first_argument_type. |
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* and \p InputIterator1's \c value_type is convertable to a type in \p OutputIterator's set of \c value_types. |
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* \tparam InputIterator2 is a model of <a href="http://www.sgi.com/tech/stl/InputIterator.html">Input Iterator</a>, |
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* \p InputIterator2's \c value_type is convertable to \p StrictWeakCompare's \c second_argument_type. |
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* and \p InputIterator2's \c value_type is convertable to a type in \p OutputIterator's set of \c value_types. |
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* \tparam OutputIterator is a model of <a href="http://www.sgi.com/tech/stl/OutputIterator.html">Output Iterator</a>. |
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* \tparam StrictWeakCompare is a model of <a href="http://www.sgi.com/tech/stl/StrictWeakOrdering.html">Strict Weak Ordering</a>. |
|
* |
|
* \pre The ranges <tt>[first1, last1)</tt> and <tt>[first2, last2)</tt> shall be sorted with respect to \p comp. |
|
* \pre The resulting range shall not overlap with either input range. |
|
* |
|
* The following code snippet demonstrates how to use \p set_difference to compute the |
|
* set difference of two sets of integers sorted in descending order. |
|
* |
|
* \code |
|
* #include <thrust/set_operations.h> |
|
* #include <thrust/functional.h> |
|
* ... |
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* int A1[6] = {9, 6, 5, 4, 3, 1, 0}; |
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* int A2[5] = {9, 7, 5, 3, 1}; |
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* |
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* int result[3]; |
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* |
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* int *result_end = thrust::set_difference(A1, A1 + 6, A2, A2 + 5, result, thrust::greater<int>()); |
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* // result is now {6, 4, 0} |
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* \endcode |
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* |
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* \see http://www.sgi.com/tech/stl/set_difference.html |
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* \see \p includes |
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* \see \p set_union |
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* \see \p set_intersection |
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* \see \p set_symmetric_difference |
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* \see \p sort |
|
* \see \p is_sorted |
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*/ |
|
template<typename InputIterator1, |
|
typename InputIterator2, |
|
typename OutputIterator, |
|
typename StrictWeakCompare> |
|
OutputIterator set_difference(InputIterator1 first1, |
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InputIterator1 last1, |
|
InputIterator2 first2, |
|
InputIterator2 last2, |
|
OutputIterator result, |
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StrictWeakCompare comp); |
|
|
|
|
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/*! \p set_intersection constructs a sorted range that is the |
|
* intersection of sorted ranges <tt>[first1, last1)</tt> and |
|
* <tt>[first2, last2)</tt>. The return value is the end of the |
|
* output range. |
|
* |
|
* In the simplest case, \p set_intersection performs the |
|
* "intersection" operation from set theory: the output range |
|
* contains a copy of every element that is contained in both |
|
* <tt>[first1, last1)</tt> and <tt>[first2, last2)</tt>. The |
|
* general case is more complicated, because the input ranges may |
|
* contain duplicate elements. The generalization is that if a value |
|
* appears \c m times in <tt>[first1, last1)</tt> and \c n times in |
|
* <tt>[first2, last2)</tt> (where \c m may be zero), then it |
|
* appears <tt>min(m,n)</tt> times in the output range. |
|
* \p set_intersection is stable, meaning that both elements are |
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* copied from the first range rather than the second, and that the |
|
* relative order of elements in the output range is the same as in |
|
* the first input range. |
|
* |
|
* This version of \p set_intersection compares objects using |
|
* \c operator<. |
|
* |
|
* The algorithm's execution is parallelized as determined by \p exec. |
|
* |
|
* \param exec The execution policy to use for parallelization. |
|
* \param first1 The beginning of the first input range. |
|
* \param last1 The end of the first input range. |
|
* \param first2 The beginning of the second input range. |
|
* \param last2 The end of the second input range. |
|
* \param result The beginning of the output range. |
|
* \return The end of the output range. |
|
* |
|
* \tparam DerivedPolicy The name of the derived execution policy. |
|
* \tparam InputIterator1 is a model of <a href="http://www.sgi.com/tech/stl/InputIterator.html">Input Iterator</a>, |
|
* \p InputIterator1 and \p InputIterator2 have the same \c value_type, |
|
* \p InputIterator1's \c value_type is a model of <a href="http://www.sgi.com/tech/stl/LessThanComparable">LessThan Comparable</a>, |
|
* the ordering on \p InputIterator1's \c value_type is a strict weak ordering, as defined in the <a href="http://www.sgi.com/tech/stl/LessThanComparable">LessThan Comparable</a> requirements, |
|
* and \p InputIterator1's \c value_type is convertable to a type in \p OutputIterator's set of \c value_types. |
|
* \tparam InputIterator2 is a model of <a href="http://www.sgi.com/tech/stl/InputIterator.html">Input Iterator</a>, |
|
* \p InputIterator2 and \p InputIterator1 have the same \c value_type, |
|
* \p InputIterator2's \c value_type is a model of <a href="http://www.sgi.com/tech/stl/LessThanComparable">LessThan Comparable</a>, |
|
* the ordering on \p InputIterator2's \c value_type is a strict weak ordering, as defined in the <a href="http://www.sgi.com/tech/stl/LessThanComparable">LessThan Comparable</a> requirements, |
|
* and \p InputIterator2's \c value_type is convertable to a type in \p OutputIterator's set of \c value_types. |
|
* \tparam OutputIterator is a model of <a href="http://www.sgi.com/tech/stl/OutputIterator.html">Output Iterator</a>. |
|
* |
|
* \pre The ranges <tt>[first1, last1)</tt> and <tt>[first2, last2)</tt> shall be sorted with respect to <tt>operator<</tt>. |
|
* \pre The resulting range shall not overlap with either input range. |
|
* |
|
* The following code snippet demonstrates how to use \p set_intersection to compute the |
|
* set intersection of two sets of integers sorted in ascending order using the \p thrust::host execution |
|
* policy for parallelization: |
|
* |
|
* \code |
|
* #include <thrust/set_operations.h> |
|
* #include <thrust/execution_policy.h> |
|
* ... |
|
* int A1[6] = {1, 3, 5, 7, 9, 11}; |
|
* int A2[7] = {1, 1, 2, 3, 5, 8, 13}; |
|
* |
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* int result[7]; |
|
* |
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* int *result_end = thrust::set_intersection(thrust::host, A1, A1 + 6, A2, A2 + 7, result); |
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* // result is now {1, 3, 5} |
|
* \endcode |
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* |
|
* \see http://www.sgi.com/tech/stl/set_intersection.html |
|
* \see \p includes |
|
* \see \p set_union |
|
* \see \p set_intersection |
|
* \see \p set_symmetric_difference |
|
* \see \p sort |
|
* \see \p is_sorted |
|
*/ |
|
template<typename DerivedPolicy, |
|
typename InputIterator1, |
|
typename InputIterator2, |
|
typename OutputIterator> |
|
OutputIterator set_intersection(const thrust::detail::execution_policy_base<DerivedPolicy> &exec, |
|
InputIterator1 first1, |
|
InputIterator1 last1, |
|
InputIterator2 first2, |
|
InputIterator2 last2, |
|
OutputIterator result); |
|
|
|
|
|
/*! \p set_intersection constructs a sorted range that is the |
|
* intersection of sorted ranges <tt>[first1, last1)</tt> and |
|
* <tt>[first2, last2)</tt>. The return value is the end of the |
|
* output range. |
|
* |
|
* In the simplest case, \p set_intersection performs the |
|
* "intersection" operation from set theory: the output range |
|
* contains a copy of every element that is contained in both |
|
* <tt>[first1, last1)</tt> and <tt>[first2, last2)</tt>. The |
|
* general case is more complicated, because the input ranges may |
|
* contain duplicate elements. The generalization is that if a value |
|
* appears \c m times in <tt>[first1, last1)</tt> and \c n times in |
|
* <tt>[first2, last2)</tt> (where \c m may be zero), then it |
|
* appears <tt>min(m,n)</tt> times in the output range. |
|
* \p set_intersection is stable, meaning that both elements are |
|
* copied from the first range rather than the second, and that the |
|
* relative order of elements in the output range is the same as in |
|
* the first input range. |
|
* |
|
* This version of \p set_intersection compares objects using |
|
* \c operator<. |
|
* |
|
* \param first1 The beginning of the first input range. |
|
* \param last1 The end of the first input range. |
|
* \param first2 The beginning of the second input range. |
|
* \param last2 The end of the second input range. |
|
* \param result The beginning of the output range. |
|
* \return The end of the output range. |
|
* |
|
* \tparam InputIterator1 is a model of <a href="http://www.sgi.com/tech/stl/InputIterator.html">Input Iterator</a>, |
|
* \p InputIterator1 and \p InputIterator2 have the same \c value_type, |
|
* \p InputIterator1's \c value_type is a model of <a href="http://www.sgi.com/tech/stl/LessThanComparable">LessThan Comparable</a>, |
|
* the ordering on \p InputIterator1's \c value_type is a strict weak ordering, as defined in the <a href="http://www.sgi.com/tech/stl/LessThanComparable">LessThan Comparable</a> requirements, |
|
* and \p InputIterator1's \c value_type is convertable to a type in \p OutputIterator's set of \c value_types. |
|
* \tparam InputIterator2 is a model of <a href="http://www.sgi.com/tech/stl/InputIterator.html">Input Iterator</a>, |
|
* \p InputIterator2 and \p InputIterator1 have the same \c value_type, |
|
* \p InputIterator2's \c value_type is a model of <a href="http://www.sgi.com/tech/stl/LessThanComparable">LessThan Comparable</a>, |
|
* the ordering on \p InputIterator2's \c value_type is a strict weak ordering, as defined in the <a href="http://www.sgi.com/tech/stl/LessThanComparable">LessThan Comparable</a> requirements, |
|
* and \p InputIterator2's \c value_type is convertable to a type in \p OutputIterator's set of \c value_types. |
|
* \tparam OutputIterator is a model of <a href="http://www.sgi.com/tech/stl/OutputIterator.html">Output Iterator</a>. |
|
* |
|
* \pre The ranges <tt>[first1, last1)</tt> and <tt>[first2, last2)</tt> shall be sorted with respect to <tt>operator<</tt>. |
|
* \pre The resulting range shall not overlap with either input range. |
|
* |
|
* The following code snippet demonstrates how to use \p set_intersection to compute the |
|
* set intersection of two sets of integers sorted in ascending order. |
|
* |
|
* \code |
|
* #include <thrust/set_operations.h> |
|
* ... |
|
* int A1[6] = {1, 3, 5, 7, 9, 11}; |
|
* int A2[7] = {1, 1, 2, 3, 5, 8, 13}; |
|
* |
|
* int result[7]; |
|
* |
|
* int *result_end = thrust::set_intersection(A1, A1 + 6, A2, A2 + 7, result); |
|
* // result is now {1, 3, 5} |
|
* \endcode |
|
* |
|
* \see http://www.sgi.com/tech/stl/set_intersection.html |
|
* \see \p includes |
|
* \see \p set_union |
|
* \see \p set_intersection |
|
* \see \p set_symmetric_difference |
|
* \see \p sort |
|
* \see \p is_sorted |
|
*/ |
|
template<typename InputIterator1, |
|
typename InputIterator2, |
|
typename OutputIterator> |
|
OutputIterator set_intersection(InputIterator1 first1, |
|
InputIterator1 last1, |
|
InputIterator2 first2, |
|
InputIterator2 last2, |
|
OutputIterator result); |
|
|
|
|
|
/*! \p set_intersection constructs a sorted range that is the |
|
* intersection of sorted ranges <tt>[first1, last1)</tt> and |
|
* <tt>[first2, last2)</tt>. The return value is the end of the |
|
* output range. |
|
* |
|
* In the simplest case, \p set_intersection performs the |
|
* "intersection" operation from set theory: the output range |
|
* contains a copy of every element that is contained in both |
|
* <tt>[first1, last1)</tt> and <tt>[first2, last2)</tt>. The |
|
* general case is more complicated, because the input ranges may |
|
* contain duplicate elements. The generalization is that if a value |
|
* appears \c m times in <tt>[first1, last1)</tt> and \c n times in |
|
* <tt>[first2, last2)</tt> (where \c m may be zero), then it |
|
* appears <tt>min(m,n)</tt> times in the output range. |
|
* \p set_intersection is stable, meaning that both elements are |
|
* copied from the first range rather than the second, and that the |
|
* relative order of elements in the output range is the same as in |
|
* the first input range. |
|
* |
|
* This version of \p set_intersection compares elements using a function object \p comp. |
|
* |
|
* The algorithm's execution is parallelized as determined by \p exec. |
|
* |
|
* \param exec The execution policy to use for parallelization. |
|
* \param first1 The beginning of the first input range. |
|
* \param last1 The end of the first input range. |
|
* \param first2 The beginning of the second input range. |
|
* \param last2 The end of the second input range. |
|
* \param result The beginning of the output range. |
|
* \param comp Comparison operator. |
|
* \return The end of the output range. |
|
* |
|
* \pre The ranges <tt>[first1, last1)</tt> and <tt>[first2, last2)</tt> shall be sorted with respect to \p comp. |
|
* \pre The resulting range shall not overlap with either input range. |
|
* |
|
* \tparam DerivedPolicy The name of the derived execution policy. |
|
* \tparam InputIterator1 is a model of <a href="http://www.sgi.com/tech/stl/InputIterator.html">Input Iterator</a>, |
|
* \p InputIterator1 and \p InputIterator2 have the same \c value_type, |
|
* \p InputIterator1's \c value_type is a model of <a href="http://www.sgi.com/tech/stl/LessThanComparable">LessThan Comparable</a>, |
|
* the ordering on \p InputIterator1's \c value_type is a strict weak ordering, as defined in the <a href="http://www.sgi.com/tech/stl/LessThanComparable">LessThan Comparable</a> requirements, |
|
* and \p InputIterator1's \c value_type is convertable to a type in \p OutputIterator's set of \c value_types. |
|
* \tparam InputIterator2 is a model of <a href="http://www.sgi.com/tech/stl/InputIterator.html">Input Iterator</a>, |
|
* \p InputIterator2 and \p InputIterator1 have the same \c value_type, |
|
* \p InputIterator2's \c value_type is a model of <a href="http://www.sgi.com/tech/stl/LessThanComparable">LessThan Comparable</a>, |
|
* the ordering on \p InputIterator2's \c value_type is a strict weak ordering, as defined in the <a href="http://www.sgi.com/tech/stl/LessThanComparable">LessThan Comparable</a> requirements, |
|
* and \p InputIterator2's \c value_type is convertable to a type in \p OutputIterator's set of \c value_types. |
|
* \tparam OutputIterator is a model of <a href="http://www.sgi.com/tech/stl/OutputIterator.html">Output Iterator</a>. |
|
* |
|
* The following code snippet demonstrates how to use \p set_intersection to compute |
|
* the set intersection of sets of integers sorted in descending order using the \p thrust::host execution |
|
* policy for parallelization: |
|
* |
|
* \code |
|
* #include <thrust/set_operations.h> |
|
* #include <thrust/execution_policy.h> |
|
* ... |
|
* int A1[6] = {11, 9, 7, 5, 3, 1}; |
|
* int A2[7] = {13, 8, 5, 3, 2, 1, 1}; |
|
* |
|
* int result[3]; |
|
* |
|
* int *result_end = thrust::set_intersection(thrust::host, A1, A1 + 6, A2, A2 + 7, result, thrust::greater<int>()); |
|
* // result is now {5, 3, 1} |
|
* \endcode |
|
* |
|
* \see http://www.sgi.com/tech/stl/set_intersection.html |
|
* \see \p includes |
|
* \see \p set_union |
|
* \see \p set_intersection |
|
* \see \p set_symmetric_difference |
|
* \see \p sort |
|
* \see \p is_sorted |
|
*/ |
|
template<typename DerivedPolicy, |
|
typename InputIterator1, |
|
typename InputIterator2, |
|
typename OutputIterator, |
|
typename StrictWeakCompare> |
|
OutputIterator set_intersection(const thrust::detail::execution_policy_base<DerivedPolicy> &exec, |
|
InputIterator1 first1, |
|
InputIterator1 last1, |
|
InputIterator2 first2, |
|
InputIterator2 last2, |
|
OutputIterator result, |
|
StrictWeakCompare comp); |
|
|
|
|
|
/*! \p set_intersection constructs a sorted range that is the |
|
* intersection of sorted ranges <tt>[first1, last1)</tt> and |
|
* <tt>[first2, last2)</tt>. The return value is the end of the |
|
* output range. |
|
* |
|
* In the simplest case, \p set_intersection performs the |
|
* "intersection" operation from set theory: the output range |
|
* contains a copy of every element that is contained in both |
|
* <tt>[first1, last1)</tt> and <tt>[first2, last2)</tt>. The |
|
* general case is more complicated, because the input ranges may |
|
* contain duplicate elements. The generalization is that if a value |
|
* appears \c m times in <tt>[first1, last1)</tt> and \c n times in |
|
* <tt>[first2, last2)</tt> (where \c m may be zero), then it |
|
* appears <tt>min(m,n)</tt> times in the output range. |
|
* \p set_intersection is stable, meaning that both elements are |
|
* copied from the first range rather than the second, and that the |
|
* relative order of elements in the output range is the same as in |
|
* the first input range. |
|
* |
|
* This version of \p set_intersection compares elements using a function object \p comp. |
|
* |
|
* \param first1 The beginning of the first input range. |
|
* \param last1 The end of the first input range. |
|
* \param first2 The beginning of the second input range. |
|
* \param last2 The end of the second input range. |
|
* \param result The beginning of the output range. |
|
* \param comp Comparison operator. |
|
* \return The end of the output range. |
|
* |
|
* \pre The ranges <tt>[first1, last1)</tt> and <tt>[first2, last2)</tt> shall be sorted with respect to \p comp. |
|
* \pre The resulting range shall not overlap with either input range. |
|
* |
|
* \tparam InputIterator1 is a model of <a href="http://www.sgi.com/tech/stl/InputIterator.html">Input Iterator</a>, |
|
* \p InputIterator1 and \p InputIterator2 have the same \c value_type, |
|
* \p InputIterator1's \c value_type is a model of <a href="http://www.sgi.com/tech/stl/LessThanComparable">LessThan Comparable</a>, |
|
* the ordering on \p InputIterator1's \c value_type is a strict weak ordering, as defined in the <a href="http://www.sgi.com/tech/stl/LessThanComparable">LessThan Comparable</a> requirements, |
|
* and \p InputIterator1's \c value_type is convertable to a type in \p OutputIterator's set of \c value_types. |
|
* \tparam InputIterator2 is a model of <a href="http://www.sgi.com/tech/stl/InputIterator.html">Input Iterator</a>, |
|
* \p InputIterator2 and \p InputIterator1 have the same \c value_type, |
|
* \p InputIterator2's \c value_type is a model of <a href="http://www.sgi.com/tech/stl/LessThanComparable">LessThan Comparable</a>, |
|
* the ordering on \p InputIterator2's \c value_type is a strict weak ordering, as defined in the <a href="http://www.sgi.com/tech/stl/LessThanComparable">LessThan Comparable</a> requirements, |
|
* and \p InputIterator2's \c value_type is convertable to a type in \p OutputIterator's set of \c value_types. |
|
* \tparam OutputIterator is a model of <a href="http://www.sgi.com/tech/stl/OutputIterator.html">Output Iterator</a>. |
|
* |
|
* The following code snippet demonstrates how to use \p set_intersection to compute |
|
* the set intersection of sets of integers sorted in descending order. |
|
* |
|
* \code |
|
* #include <thrust/set_operations.h> |
|
* ... |
|
* int A1[6] = {11, 9, 7, 5, 3, 1}; |
|
* int A2[7] = {13, 8, 5, 3, 2, 1, 1}; |
|
* |
|
* int result[3]; |
|
* |
|
* int *result_end = thrust::set_intersection(A1, A1 + 6, A2, A2 + 7, result, thrust::greater<int>()); |
|
* // result is now {5, 3, 1} |
|
* \endcode |
|
* |
|
* \see http://www.sgi.com/tech/stl/set_intersection.html |
|
* \see \p includes |
|
* \see \p set_union |
|
* \see \p set_intersection |
|
* \see \p set_symmetric_difference |
|
* \see \p sort |
|
* \see \p is_sorted |
|
*/ |
|
template<typename InputIterator1, |
|
typename InputIterator2, |
|
typename OutputIterator, |
|
typename StrictWeakCompare> |
|
OutputIterator set_intersection(InputIterator1 first1, |
|
InputIterator1 last1, |
|
InputIterator2 first2, |
|
InputIterator2 last2, |
|
OutputIterator result, |
|
StrictWeakCompare comp); |
|
|
|
|
|
/*! \p set_symmetric_difference constructs a sorted range that is the set symmetric |
|
* difference of the sorted ranges <tt>[first1, last1)</tt> and <tt>[first2, last2)</tt>. |
|
* The return value is the end of the output range. |
|
* |
|
* In the simplest case, \p set_symmetric_difference performs a set theoretic calculation: |
|
* it constructs the union of the two sets A - B and B - A, where A and B are the two |
|
* input ranges. That is, the output range contains a copy of every element that is |
|
* contained in <tt>[first1, last1)</tt> but not <tt>[first2, last1)</tt>, and a copy of |
|
* every element that is contained in <tt>[first2, last2)</tt> but not <tt>[first1, last1)</tt>. |
|
* The general case is more complicated, because the input ranges may contain duplicate elements. |
|
* The generalization is that if <tt>[first1, last1)</tt> contains \c m elements that are |
|
* equivalent to each other and <tt>[first2, last1)</tt> contains \c n elements that are |
|
* equivalent to them, then <tt>|m - n|</tt> of those elements shall be copied to the output |
|
* range: the last <tt>m - n</tt> elements from <tt>[first1, last1)</tt> if <tt>m > n</tt>, and |
|
* the last <tt>n - m</tt> of these elements from <tt>[first2, last2)</tt> if <tt>m < n</tt>. |
|
* |
|
* This version of \p set_union compares elements using \c operator<. |
|
* |
|
* The algorithm's execution is parallelized as determined by \p exec. |
|
* |
|
* \param exec The execution policy to use for parallelization. |
|
* \param first1 The beginning of the first input range. |
|
* \param last1 The end of the first input range. |
|
* \param first2 The beginning of the second input range. |
|
* \param last2 The end of the second input range. |
|
* \param result The beginning of the output range. |
|
* \return The end of the output range. |
|
* |
|
* \tparam DerivedPolicy The name of the derived execution policy. |
|
* \tparam InputIterator1 is a model of <a href="http://www.sgi.com/tech/stl/InputIterator.html">Input Iterator</a>, |
|
* \p InputIterator1 and \p InputIterator2 have the same \c value_type, |
|
* \p InputIterator1's \c value_type is a model of <a href="http://www.sgi.com/tech/stl/LessThanComparable">LessThan Comparable</a>, |
|
* the ordering on \p InputIterator1's \c value_type is a strict weak ordering, as defined in the <a href="http://www.sgi.com/tech/stl/LessThanComparable">LessThan Comparable</a> requirements, |
|
* and \p InputIterator1's \c value_type is convertable to a type in \p OutputIterator's set of \c value_types. |
|
* \tparam InputIterator2 is a model of <a href="http://www.sgi.com/tech/stl/InputIterator.html">Input Iterator</a>, |
|
* \p InputIterator2 and \p InputIterator1 have the same \c value_type, |
|
* \p InputIterator2's \c value_type is a model of <a href="http://www.sgi.com/tech/stl/LessThanComparable">LessThan Comparable</a>, |
|
* the ordering on \p InputIterator2's \c value_type is a strict weak ordering, as defined in the <a href="http://www.sgi.com/tech/stl/LessThanComparable">LessThan Comparable</a> requirements, |
|
* and \p InputIterator2's \c value_type is convertable to a type in \p OutputIterator's set of \c value_types. |
|
* \tparam OutputIterator is a model of <a href="http://www.sgi.com/tech/stl/OutputIterator.html">Output Iterator</a>. |
|
* |
|
* \pre The ranges <tt>[first1, last1)</tt> and <tt>[first2, last2)</tt> shall be sorted with respect to <tt>operator<</tt>. |
|
* \pre The resulting range shall not overlap with either input range. |
|
* |
|
* The following code snippet demonstrates how to use \p set_symmetric_difference to compute |
|
* the symmetric difference of two sets of integers sorted in ascending order using the \p thrust::host |
|
* execution policy for parallelization: |
|
* |
|
* \code |
|
* #include <thrust/set_operations.h> |
|
* #include <thrust/execution_policy.h> |
|
* ... |
|
* int A1[6] = {0, 1, 2, 2, 4, 6, 7}; |
|
* int A2[5] = {1, 1, 2, 5, 8}; |
|
* |
|
* int result[6]; |
|
* |
|
* int *result_end = thrust::set_symmetric_difference(thrust::host, A1, A1 + 6, A2, A2 + 5, result); |
|
* // result = {0, 4, 5, 6, 7, 8} |
|
* \endcode |
|
* |
|
* \see http://www.sgi.com/tech/stl/set_symmetric_difference.html |
|
* \see \p merge |
|
* \see \p includes |
|
* \see \p set_difference |
|
* \see \p set_union |
|
* \see \p set_intersection |
|
* \see \p sort |
|
* \see \p is_sorted |
|
*/ |
|
template<typename DerivedPolicy, |
|
typename InputIterator1, |
|
typename InputIterator2, |
|
typename OutputIterator> |
|
OutputIterator set_symmetric_difference(const thrust::detail::execution_policy_base<DerivedPolicy> &exec, |
|
InputIterator1 first1, |
|
InputIterator1 last1, |
|
InputIterator2 first2, |
|
InputIterator2 last2, |
|
OutputIterator result); |
|
|
|
|
|
/*! \p set_symmetric_difference constructs a sorted range that is the set symmetric |
|
* difference of the sorted ranges <tt>[first1, last1)</tt> and <tt>[first2, last2)</tt>. |
|
* The return value is the end of the output range. |
|
* |
|
* In the simplest case, \p set_symmetric_difference performs a set theoretic calculation: |
|
* it constructs the union of the two sets A - B and B - A, where A and B are the two |
|
* input ranges. That is, the output range contains a copy of every element that is |
|
* contained in <tt>[first1, last1)</tt> but not <tt>[first2, last1)</tt>, and a copy of |
|
* every element that is contained in <tt>[first2, last2)</tt> but not <tt>[first1, last1)</tt>. |
|
* The general case is more complicated, because the input ranges may contain duplicate elements. |
|
* The generalization is that if <tt>[first1, last1)</tt> contains \c m elements that are |
|
* equivalent to each other and <tt>[first2, last1)</tt> contains \c n elements that are |
|
* equivalent to them, then <tt>|m - n|</tt> of those elements shall be copied to the output |
|
* range: the last <tt>m - n</tt> elements from <tt>[first1, last1)</tt> if <tt>m > n</tt>, and |
|
* the last <tt>n - m</tt> of these elements from <tt>[first2, last2)</tt> if <tt>m < n</tt>. |
|
* |
|
* This version of \p set_union compares elements using \c operator<. |
|
* |
|
* \param first1 The beginning of the first input range. |
|
* \param last1 The end of the first input range. |
|
* \param first2 The beginning of the second input range. |
|
* \param last2 The end of the second input range. |
|
* \param result The beginning of the output range. |
|
* \return The end of the output range. |
|
* |
|
* \tparam InputIterator1 is a model of <a href="http://www.sgi.com/tech/stl/InputIterator.html">Input Iterator</a>, |
|
* \p InputIterator1 and \p InputIterator2 have the same \c value_type, |
|
* \p InputIterator1's \c value_type is a model of <a href="http://www.sgi.com/tech/stl/LessThanComparable">LessThan Comparable</a>, |
|
* the ordering on \p InputIterator1's \c value_type is a strict weak ordering, as defined in the <a href="http://www.sgi.com/tech/stl/LessThanComparable">LessThan Comparable</a> requirements, |
|
* and \p InputIterator1's \c value_type is convertable to a type in \p OutputIterator's set of \c value_types. |
|
* \tparam InputIterator2 is a model of <a href="http://www.sgi.com/tech/stl/InputIterator.html">Input Iterator</a>, |
|
* \p InputIterator2 and \p InputIterator1 have the same \c value_type, |
|
* \p InputIterator2's \c value_type is a model of <a href="http://www.sgi.com/tech/stl/LessThanComparable">LessThan Comparable</a>, |
|
* the ordering on \p InputIterator2's \c value_type is a strict weak ordering, as defined in the <a href="http://www.sgi.com/tech/stl/LessThanComparable">LessThan Comparable</a> requirements, |
|
* and \p InputIterator2's \c value_type is convertable to a type in \p OutputIterator's set of \c value_types. |
|
* \tparam OutputIterator is a model of <a href="http://www.sgi.com/tech/stl/OutputIterator.html">Output Iterator</a>. |
|
* |
|
* \pre The ranges <tt>[first1, last1)</tt> and <tt>[first2, last2)</tt> shall be sorted with respect to <tt>operator<</tt>. |
|
* \pre The resulting range shall not overlap with either input range. |
|
* |
|
* The following code snippet demonstrates how to use \p set_symmetric_difference to compute |
|
* the symmetric difference of two sets of integers sorted in ascending order. |
|
* |
|
* \code |
|
* #include <thrust/set_operations.h> |
|
* ... |
|
* int A1[6] = {0, 1, 2, 2, 4, 6, 7}; |
|
* int A2[5] = {1, 1, 2, 5, 8}; |
|
* |
|
* int result[6]; |
|
* |
|
* int *result_end = thrust::set_symmetric_difference(A1, A1 + 6, A2, A2 + 5, result); |
|
* // result = {0, 4, 5, 6, 7, 8} |
|
* \endcode |
|
* |
|
* \see http://www.sgi.com/tech/stl/set_symmetric_difference.html |
|
* \see \p merge |
|
* \see \p includes |
|
* \see \p set_difference |
|
* \see \p set_union |
|
* \see \p set_intersection |
|
* \see \p sort |
|
* \see \p is_sorted |
|
*/ |
|
template<typename InputIterator1, |
|
typename InputIterator2, |
|
typename OutputIterator> |
|
OutputIterator set_symmetric_difference(InputIterator1 first1, |
|
InputIterator1 last1, |
|
InputIterator2 first2, |
|
InputIterator2 last2, |
|
OutputIterator result); |
|
|
|
|
|
/*! \p set_symmetric_difference constructs a sorted range that is the set symmetric |
|
* difference of the sorted ranges <tt>[first1, last1)</tt> and <tt>[first2, last2)</tt>. |
|
* The return value is the end of the output range. |
|
* |
|
* In the simplest case, \p set_symmetric_difference performs a set theoretic calculation: |
|
* it constructs the union of the two sets A - B and B - A, where A and B are the two |
|
* input ranges. That is, the output range contains a copy of every element that is |
|
* contained in <tt>[first1, last1)</tt> but not <tt>[first2, last1)</tt>, and a copy of |
|
* every element that is contained in <tt>[first2, last2)</tt> but not <tt>[first1, last1)</tt>. |
|
* The general case is more complicated, because the input ranges may contain duplicate elements. |
|
* The generalization is that if <tt>[first1, last1)</tt> contains \c m elements that are |
|
* equivalent to each other and <tt>[first2, last1)</tt> contains \c n elements that are |
|
* equivalent to them, then <tt>|m - n|</tt> of those elements shall be copied to the output |
|
* range: the last <tt>m - n</tt> elements from <tt>[first1, last1)</tt> if <tt>m > n</tt>, and |
|
* the last <tt>n - m</tt> of these elements from <tt>[first2, last2)</tt> if <tt>m < n</tt>. |
|
* |
|
* This version of \p set_union compares elements using a function object \p comp. |
|
* |
|
* The algorithm's execution is parallelized as determined by \p exec. |
|
* |
|
* \param exec The execution policy to use for parallelization. |
|
* \param first1 The beginning of the first input range. |
|
* \param last1 The end of the first input range. |
|
* \param first2 The beginning of the second input range. |
|
* \param last2 The end of the second input range. |
|
* \param result The beginning of the output range. |
|
* \param comp Comparison operator. |
|
* \return The end of the output range. |
|
* |
|
* \tparam DerivedPolicy The name of the derived execution policy. |
|
* \tparam InputIterator1 is a model of <a href="http://www.sgi.com/tech/stl/InputIterator.html">Input Iterator</a>, |
|
* \p InputIterator1 and \p InputIterator2 have the same \c value_type, |
|
* \p InputIterator1's \c value_type is a model of <a href="http://www.sgi.com/tech/stl/LessThanComparable">LessThan Comparable</a>, |
|
* the ordering on \p InputIterator1's \c value_type is a strict weak ordering, as defined in the <a href="http://www.sgi.com/tech/stl/LessThanComparable">LessThan Comparable</a> requirements, |
|
* and \p InputIterator1's \c value_type is convertable to a type in \p OutputIterator's set of \c value_types. |
|
* \tparam InputIterator2 is a model of <a href="http://www.sgi.com/tech/stl/InputIterator.html">Input Iterator</a>, |
|
* \p InputIterator2 and \p InputIterator1 have the same \c value_type, |
|
* \p InputIterator2's \c value_type is a model of <a href="http://www.sgi.com/tech/stl/LessThanComparable">LessThan Comparable</a>, |
|
* the ordering on \p InputIterator2's \c value_type is a strict weak ordering, as defined in the <a href="http://www.sgi.com/tech/stl/LessThanComparable">LessThan Comparable</a> requirements, |
|
* and \p InputIterator2's \c value_type is convertable to a type in \p OutputIterator's set of \c value_types. |
|
* \tparam OutputIterator is a model of <a href="http://www.sgi.com/tech/stl/OutputIterator.html">Output Iterator</a>. |
|
* |
|
* \pre The ranges <tt>[first1, last1)</tt> and <tt>[first2, last2)</tt> shall be sorted with respect to \p comp. |
|
* \pre The resulting range shall not overlap with either input range. |
|
* |
|
* The following code snippet demonstrates how to use \p set_symmetric_difference to compute |
|
* the symmetric difference of two sets of integers sorted in descending order using the \p thrust::host |
|
* execution policy for parallelization: |
|
* |
|
* \code |
|
* #include <thrust/set_operations.h> |
|
* #include <thrust/execution_policy.h> |
|
* ... |
|
* int A1[6] = {7, 6, 4, 2, 2, 1, 0}; |
|
* int A2[5] = {8, 5, 2, 1, 1}; |
|
* |
|
* int result[6]; |
|
* |
|
* int *result_end = thrust::set_symmetric_difference(thrust::host, A1, A1 + 6, A2, A2 + 5, result); |
|
* // result = {8, 7, 6, 5, 4, 0} |
|
* \endcode |
|
* |
|
* \see http://www.sgi.com/tech/stl/set_symmetric_difference.html |
|
* \see \p merge |
|
* \see \p includes |
|
* \see \p set_difference |
|
* \see \p set_union |
|
* \see \p set_intersection |
|
* \see \p sort |
|
* \see \p is_sorted |
|
*/ |
|
template<typename DerivedPolicy, |
|
typename InputIterator1, |
|
typename InputIterator2, |
|
typename OutputIterator, |
|
typename StrictWeakCompare> |
|
OutputIterator set_symmetric_difference(const thrust::detail::execution_policy_base<DerivedPolicy> &exec, |
|
InputIterator1 first1, |
|
InputIterator1 last1, |
|
InputIterator2 first2, |
|
InputIterator2 last2, |
|
OutputIterator result, |
|
StrictWeakCompare comp); |
|
|
|
|
|
/*! \p set_symmetric_difference constructs a sorted range that is the set symmetric |
|
* difference of the sorted ranges <tt>[first1, last1)</tt> and <tt>[first2, last2)</tt>. |
|
* The return value is the end of the output range. |
|
* |
|
* In the simplest case, \p set_symmetric_difference performs a set theoretic calculation: |
|
* it constructs the union of the two sets A - B and B - A, where A and B are the two |
|
* input ranges. That is, the output range contains a copy of every element that is |
|
* contained in <tt>[first1, last1)</tt> but not <tt>[first2, last1)</tt>, and a copy of |
|
* every element that is contained in <tt>[first2, last2)</tt> but not <tt>[first1, last1)</tt>. |
|
* The general case is more complicated, because the input ranges may contain duplicate elements. |
|
* The generalization is that if <tt>[first1, last1)</tt> contains \c m elements that are |
|
* equivalent to each other and <tt>[first2, last1)</tt> contains \c n elements that are |
|
* equivalent to them, then <tt>|m - n|</tt> of those elements shall be copied to the output |
|
* range: the last <tt>m - n</tt> elements from <tt>[first1, last1)</tt> if <tt>m > n</tt>, and |
|
* the last <tt>n - m</tt> of these elements from <tt>[first2, last2)</tt> if <tt>m < n</tt>. |
|
* |
|
* This version of \p set_union compares elements using a function object \p comp. |
|
* |
|
* \param first1 The beginning of the first input range. |
|
* \param last1 The end of the first input range. |
|
* \param first2 The beginning of the second input range. |
|
* \param last2 The end of the second input range. |
|
* \param result The beginning of the output range. |
|
* \param comp Comparison operator. |
|
* \return The end of the output range. |
|
* |
|
* \tparam InputIterator1 is a model of <a href="http://www.sgi.com/tech/stl/InputIterator.html">Input Iterator</a>, |
|
* \p InputIterator1 and \p InputIterator2 have the same \c value_type, |
|
* \p InputIterator1's \c value_type is a model of <a href="http://www.sgi.com/tech/stl/LessThanComparable">LessThan Comparable</a>, |
|
* the ordering on \p InputIterator1's \c value_type is a strict weak ordering, as defined in the <a href="http://www.sgi.com/tech/stl/LessThanComparable">LessThan Comparable</a> requirements, |
|
* and \p InputIterator1's \c value_type is convertable to a type in \p OutputIterator's set of \c value_types. |
|
* \tparam InputIterator2 is a model of <a href="http://www.sgi.com/tech/stl/InputIterator.html">Input Iterator</a>, |
|
* \p InputIterator2 and \p InputIterator1 have the same \c value_type, |
|
* \p InputIterator2's \c value_type is a model of <a href="http://www.sgi.com/tech/stl/LessThanComparable">LessThan Comparable</a>, |
|
* the ordering on \p InputIterator2's \c value_type is a strict weak ordering, as defined in the <a href="http://www.sgi.com/tech/stl/LessThanComparable">LessThan Comparable</a> requirements, |
|
* and \p InputIterator2's \c value_type is convertable to a type in \p OutputIterator's set of \c value_types. |
|
* \tparam OutputIterator is a model of <a href="http://www.sgi.com/tech/stl/OutputIterator.html">Output Iterator</a>. |
|
* |
|
* \pre The ranges <tt>[first1, last1)</tt> and <tt>[first2, last2)</tt> shall be sorted with respect to \p comp. |
|
* \pre The resulting range shall not overlap with either input range. |
|
* |
|
* The following code snippet demonstrates how to use \p set_symmetric_difference to compute |
|
* the symmetric difference of two sets of integers sorted in descending order. |
|
* |
|
* \code |
|
* #include <thrust/set_operations.h> |
|
* ... |
|
* int A1[6] = {7, 6, 4, 2, 2, 1, 0}; |
|
* int A2[5] = {8, 5, 2, 1, 1}; |
|
* |
|
* int result[6]; |
|
* |
|
* int *result_end = thrust::set_symmetric_difference(A1, A1 + 6, A2, A2 + 5, result); |
|
* // result = {8, 7, 6, 5, 4, 0} |
|
* \endcode |
|
* |
|
* \see http://www.sgi.com/tech/stl/set_symmetric_difference.html |
|
* \see \p merge |
|
* \see \p includes |
|
* \see \p set_difference |
|
* \see \p set_union |
|
* \see \p set_intersection |
|
* \see \p sort |
|
* \see \p is_sorted |
|
*/ |
|
template<typename InputIterator1, |
|
typename InputIterator2, |
|
typename OutputIterator, |
|
typename StrictWeakCompare> |
|
OutputIterator set_symmetric_difference(InputIterator1 first1, |
|
InputIterator1 last1, |
|
InputIterator2 first2, |
|
InputIterator2 last2, |
|
OutputIterator result, |
|
StrictWeakCompare comp); |
|
|
|
|
|
/*! \p set_union constructs a sorted range that is the union of the sorted ranges |
|
* <tt>[first1, last1)</tt> and <tt>[first2, last2)</tt>. The return value is the |
|
* end of the output range. |
|
* |
|
* In the simplest case, \p set_union performs the "union" operation from set |
|
* theory: the output range contains a copy of every element that is contained in |
|
* <tt>[first1, last1)</tt>, <tt>[first2, last1)</tt>, or both. The general case |
|
* is more complicated, because the input ranges may contain duplicate elements. |
|
* The generalization is that if <tt>[first1, last1)</tt> contains \c m elements |
|
* that are equivalent to each other and if <tt>[first2, last2)</tt> contains \c n |
|
* elements that are equivalent to them, then all \c m elements from the first |
|
* range shall be copied to the output range, in order, and then <tt>max(n - m, 0)</tt> |
|
* elements from the second range shall be copied to the output, in order. |
|
* |
|
* This version of \p set_union compares elements using \c operator<. |
|
* |
|
* The algorithm's execution is parallelized as determined by \p exec. |
|
* |
|
* \param exec The execution policy to use for parallelization. |
|
* \param first1 The beginning of the first input range. |
|
* \param last1 The end of the first input range. |
|
* \param first2 The beginning of the second input range. |
|
* \param last2 The end of the second input range. |
|
* \param result The beginning of the output range. |
|
* \return The end of the output range. |
|
* |
|
* \tparam DerivedPolicy The name of the derived execution policy. |
|
* \tparam InputIterator1 is a model of <a href="http://www.sgi.com/tech/stl/InputIterator.html">Input Iterator</a>, |
|
* \p InputIterator1 and \p InputIterator2 have the same \c value_type, |
|
* \p InputIterator1's \c value_type is a model of <a href="http://www.sgi.com/tech/stl/LessThanComparable">LessThan Comparable</a>, |
|
* the ordering on \p InputIterator1's \c value_type is a strict weak ordering, as defined in the <a href="http://www.sgi.com/tech/stl/LessThanComparable">LessThan Comparable</a> requirements, |
|
* and \p InputIterator1's \c value_type is convertable to a type in \p OutputIterator's set of \c value_types. |
|
* \tparam InputIterator2 is a model of <a href="http://www.sgi.com/tech/stl/InputIterator.html">Input Iterator</a>, |
|
* \p InputIterator2 and \p InputIterator1 have the same \c value_type, |
|
* \p InputIterator2's \c value_type is a model of <a href="http://www.sgi.com/tech/stl/LessThanComparable">LessThan Comparable</a>, |
|
* the ordering on \p InputIterator2's \c value_type is a strict weak ordering, as defined in the <a href="http://www.sgi.com/tech/stl/LessThanComparable">LessThan Comparable</a> requirements, |
|
* and \p InputIterator2's \c value_type is convertable to a type in \p OutputIterator's set of \c value_types. |
|
* \tparam OutputIterator is a model of <a href="http://www.sgi.com/tech/stl/OutputIterator.html">Output Iterator</a>. |
|
* |
|
* \pre The ranges <tt>[first1, last1)</tt> and <tt>[first2, last2)</tt> shall be sorted with respect to <tt>operator<</tt>. |
|
* \pre The resulting range shall not overlap with either input range. |
|
* |
|
* The following code snippet demonstrates how to use \p set_union to compute the union of |
|
* two sets of integers sorted in ascending order using the \p thrust::host execution policy for |
|
* parallelization: |
|
* |
|
* \code |
|
* #include <thrust/set_operations.h> |
|
* #include <thrust/execution_policy.h> |
|
* ... |
|
* int A1[6] = {0, 2, 4, 6, 8, 10, 12}; |
|
* int A2[5] = {1, 3, 5, 7, 9}; |
|
* |
|
* int result[11]; |
|
* |
|
* int *result_end = thrust::set_union(thrust::host, A1, A1 + 6, A2, A2 + 5, result); |
|
* // result = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12} |
|
* \endcode |
|
* |
|
* \see http://www.sgi.com/tech/stl/set_union.html |
|
* \see \p merge |
|
* \see \p includes |
|
* \see \p set_union |
|
* \see \p set_intersection |
|
* \see \p set_symmetric_difference |
|
* \see \p sort |
|
* \see \p is_sorted |
|
*/ |
|
template<typename DerivedPolicy, |
|
typename InputIterator1, |
|
typename InputIterator2, |
|
typename OutputIterator> |
|
OutputIterator set_union(const thrust::detail::execution_policy_base<DerivedPolicy> &exec, |
|
InputIterator1 first1, |
|
InputIterator1 last1, |
|
InputIterator2 first2, |
|
InputIterator2 last2, |
|
OutputIterator result); |
|
|
|
|
|
/*! \p set_union constructs a sorted range that is the union of the sorted ranges |
|
* <tt>[first1, last1)</tt> and <tt>[first2, last2)</tt>. The return value is the |
|
* end of the output range. |
|
* |
|
* In the simplest case, \p set_union performs the "union" operation from set |
|
* theory: the output range contains a copy of every element that is contained in |
|
* <tt>[first1, last1)</tt>, <tt>[first2, last1)</tt>, or both. The general case |
|
* is more complicated, because the input ranges may contain duplicate elements. |
|
* The generalization is that if <tt>[first1, last1)</tt> contains \c m elements |
|
* that are equivalent to each other and if <tt>[first2, last2)</tt> contains \c n |
|
* elements that are equivalent to them, then all \c m elements from the first |
|
* range shall be copied to the output range, in order, and then <tt>max(n - m, 0)</tt> |
|
* elements from the second range shall be copied to the output, in order. |
|
* |
|
* This version of \p set_union compares elements using \c operator<. |
|
* |
|
* \param first1 The beginning of the first input range. |
|
* \param last1 The end of the first input range. |
|
* \param first2 The beginning of the second input range. |
|
* \param last2 The end of the second input range. |
|
* \param result The beginning of the output range. |
|
* \return The end of the output range. |
|
* |
|
* \tparam InputIterator1 is a model of <a href="http://www.sgi.com/tech/stl/InputIterator.html">Input Iterator</a>, |
|
* \p InputIterator1 and \p InputIterator2 have the same \c value_type, |
|
* \p InputIterator1's \c value_type is a model of <a href="http://www.sgi.com/tech/stl/LessThanComparable">LessThan Comparable</a>, |
|
* the ordering on \p InputIterator1's \c value_type is a strict weak ordering, as defined in the <a href="http://www.sgi.com/tech/stl/LessThanComparable">LessThan Comparable</a> requirements, |
|
* and \p InputIterator1's \c value_type is convertable to a type in \p OutputIterator's set of \c value_types. |
|
* \tparam InputIterator2 is a model of <a href="http://www.sgi.com/tech/stl/InputIterator.html">Input Iterator</a>, |
|
* \p InputIterator2 and \p InputIterator1 have the same \c value_type, |
|
* \p InputIterator2's \c value_type is a model of <a href="http://www.sgi.com/tech/stl/LessThanComparable">LessThan Comparable</a>, |
|
* the ordering on \p InputIterator2's \c value_type is a strict weak ordering, as defined in the <a href="http://www.sgi.com/tech/stl/LessThanComparable">LessThan Comparable</a> requirements, |
|
* and \p InputIterator2's \c value_type is convertable to a type in \p OutputIterator's set of \c value_types. |
|
* \tparam OutputIterator is a model of <a href="http://www.sgi.com/tech/stl/OutputIterator.html">Output Iterator</a>. |
|
* |
|
* \pre The ranges <tt>[first1, last1)</tt> and <tt>[first2, last2)</tt> shall be sorted with respect to <tt>operator<</tt>. |
|
* \pre The resulting range shall not overlap with either input range. |
|
* |
|
* The following code snippet demonstrates how to use \p set_union to compute the union of |
|
* two sets of integers sorted in ascending order. |
|
* |
|
* \code |
|
* #include <thrust/set_operations.h> |
|
* ... |
|
* int A1[6] = {0, 2, 4, 6, 8, 10, 12}; |
|
* int A2[5] = {1, 3, 5, 7, 9}; |
|
* |
|
* int result[11]; |
|
* |
|
* int *result_end = thrust::set_union(A1, A1 + 6, A2, A2 + 5, result); |
|
* // result = {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12} |
|
* \endcode |
|
* |
|
* \see http://www.sgi.com/tech/stl/set_union.html |
|
* \see \p merge |
|
* \see \p includes |
|
* \see \p set_union |
|
* \see \p set_intersection |
|
* \see \p set_symmetric_difference |
|
* \see \p sort |
|
* \see \p is_sorted |
|
*/ |
|
template<typename InputIterator1, |
|
typename InputIterator2, |
|
typename OutputIterator> |
|
OutputIterator set_union(InputIterator1 first1, |
|
InputIterator1 last1, |
|
InputIterator2 first2, |
|
InputIterator2 last2, |
|
OutputIterator result); |
|
|
|
|
|
/*! \p set_union constructs a sorted range that is the union of the sorted ranges |
|
* <tt>[first1, last1)</tt> and <tt>[first2, last2)</tt>. The return value is the |
|
* end of the output range. |
|
* |
|
* In the simplest case, \p set_union performs the "union" operation from set |
|
* theory: the output range contains a copy of every element that is contained in |
|
* <tt>[first1, last1)</tt>, <tt>[first2, last1)</tt>, or both. The general case |
|
* is more complicated, because the input ranges may contain duplicate elements. |
|
* The generalization is that if <tt>[first1, last1)</tt> contains \c m elements |
|
* that are equivalent to each other and if <tt>[first2, last2)</tt> contains \c n |
|
* elements that are equivalent to them, then all \c m elements from the first |
|
* range shall be copied to the output range, in order, and then <tt>max(n - m, 0)</tt> |
|
* elements from the second range shall be copied to the output, in order. |
|
* |
|
* This version of \p set_union compares elements using a function object \p comp. |
|
* |
|
* The algorithm's execution is parallelized as determined by \p exec. |
|
* |
|
* \param exec The execution policy to use for parallelization. |
|
* \param first1 The beginning of the first input range. |
|
* \param last1 The end of the first input range. |
|
* \param first2 The beginning of the second input range. |
|
* \param last2 The end of the second input range. |
|
* \param result The beginning of the output range. |
|
* \param comp Comparison operator. |
|
* \return The end of the output range. |
|
* |
|
* \tparam DerivedPolicy The name of the derived execution policy. |
|
* \tparam InputIterator1 is a model of <a href="http://www.sgi.com/tech/stl/InputIterator.html">Input Iterator</a>, |
|
* \p InputIterator1's \c value_type is convertable to \p StrictWeakCompare's \c first_argument_type. |
|
* and \p InputIterator1's \c value_type is convertable to a type in \p OutputIterator's set of \c value_types. |
|
* \tparam InputIterator2 is a model of <a href="http://www.sgi.com/tech/stl/InputIterator.html">Input Iterator</a>, |
|
* \p InputIterator2's \c value_type is convertable to \p StrictWeakCompare's \c second_argument_type. |
|
* and \p InputIterator2's \c value_type is convertable to a type in \p OutputIterator's set of \c value_types. |
|
* \tparam OutputIterator is a model of <a href="http://www.sgi.com/tech/stl/OutputIterator.html">Output Iterator</a>. |
|
* \tparam StrictWeakCompare is a model of <a href="http://www.sgi.com/tech/stl/StrictWeakOrdering.html">Strict Weak Ordering</a>. |
|
* |
|
* \pre The ranges <tt>[first1, last1)</tt> and <tt>[first2, last2)</tt> shall be sorted with respect to \p comp. |
|
* \pre The resulting range shall not overlap with either input range. |
|
* |
|
* The following code snippet demonstrates how to use \p set_union to compute the union of |
|
* two sets of integers sorted in ascending order using the \p thrust::host execution policy for |
|
* parallelization: |
|
* |
|
* \code |
|
* #include <thrust/set_operations.h> |
|
* #include <thrust/functional.h> |
|
* #include <thrust/execution_policy.h> |
|
* ... |
|
* int A1[6] = {12, 10, 8, 6, 4, 2, 0}; |
|
* int A2[5] = {9, 7, 5, 3, 1}; |
|
* |
|
* int result[11]; |
|
* |
|
* int *result_end = thrust::set_union(thrust::host, A1, A1 + 6, A2, A2 + 5, result, thrust::greater<int>()); |
|
* // result = {12, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0} |
|
* \endcode |
|
* |
|
* \see http://www.sgi.com/tech/stl/set_union.html |
|
* \see \p merge |
|
* \see \p includes |
|
* \see \p set_union |
|
* \see \p set_intersection |
|
* \see \p set_symmetric_difference |
|
* \see \p sort |
|
* \see \p is_sorted |
|
*/ |
|
template<typename DerivedPolicy, |
|
typename InputIterator1, |
|
typename InputIterator2, |
|
typename OutputIterator, |
|
typename StrictWeakCompare> |
|
OutputIterator set_union(const thrust::detail::execution_policy_base<DerivedPolicy> &exec, |
|
InputIterator1 first1, |
|
InputIterator1 last1, |
|
InputIterator2 first2, |
|
InputIterator2 last2, |
|
OutputIterator result, |
|
StrictWeakCompare comp); |
|
|
|
|
|
/*! \p set_union constructs a sorted range that is the union of the sorted ranges |
|
* <tt>[first1, last1)</tt> and <tt>[first2, last2)</tt>. The return value is the |
|
* end of the output range. |
|
* |
|
* In the simplest case, \p set_union performs the "union" operation from set |
|
* theory: the output range contains a copy of every element that is contained in |
|
* <tt>[first1, last1)</tt>, <tt>[first2, last1)</tt>, or both. The general case |
|
* is more complicated, because the input ranges may contain duplicate elements. |
|
* The generalization is that if <tt>[first1, last1)</tt> contains \c m elements |
|
* that are equivalent to each other and if <tt>[first2, last2)</tt> contains \c n |
|
* elements that are equivalent to them, then all \c m elements from the first |
|
* range shall be copied to the output range, in order, and then <tt>max(n - m, 0)</tt> |
|
* elements from the second range shall be copied to the output, in order. |
|
* |
|
* This version of \p set_union compares elements using a function object \p comp. |
|
* |
|
* \param first1 The beginning of the first input range. |
|
* \param last1 The end of the first input range. |
|
* \param first2 The beginning of the second input range. |
|
* \param last2 The end of the second input range. |
|
* \param result The beginning of the output range. |
|
* \param comp Comparison operator. |
|
* \return The end of the output range. |
|
* |
|
* \tparam InputIterator1 is a model of <a href="http://www.sgi.com/tech/stl/InputIterator.html">Input Iterator</a>, |
|
* \p InputIterator1's \c value_type is convertable to \p StrictWeakCompare's \c first_argument_type. |
|
* and \p InputIterator1's \c value_type is convertable to a type in \p OutputIterator's set of \c value_types. |
|
* \tparam InputIterator2 is a model of <a href="http://www.sgi.com/tech/stl/InputIterator.html">Input Iterator</a>, |
|
* \p InputIterator2's \c value_type is convertable to \p StrictWeakCompare's \c second_argument_type. |
|
* and \p InputIterator2's \c value_type is convertable to a type in \p OutputIterator's set of \c value_types. |
|
* \tparam OutputIterator is a model of <a href="http://www.sgi.com/tech/stl/OutputIterator.html">Output Iterator</a>. |
|
* \tparam StrictWeakCompare is a model of <a href="http://www.sgi.com/tech/stl/StrictWeakOrdering.html">Strict Weak Ordering</a>. |
|
* |
|
* \pre The ranges <tt>[first1, last1)</tt> and <tt>[first2, last2)</tt> shall be sorted with respect to \p comp. |
|
* \pre The resulting range shall not overlap with either input range. |
|
* |
|
* The following code snippet demonstrates how to use \p set_union to compute the union of |
|
* two sets of integers sorted in ascending order. |
|
* |
|
* \code |
|
* #include <thrust/set_operations.h> |
|
* #include <thrust/functional.h> |
|
* ... |
|
* int A1[6] = {12, 10, 8, 6, 4, 2, 0}; |
|
* int A2[5] = {9, 7, 5, 3, 1}; |
|
* |
|
* int result[11]; |
|
* |
|
* int *result_end = thrust::set_union(A1, A1 + 6, A2, A2 + 5, result, thrust::greater<int>()); |
|
* // result = {12, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0} |
|
* \endcode |
|
* |
|
* \see http://www.sgi.com/tech/stl/set_union.html |
|
* \see \p merge |
|
* \see \p includes |
|
* \see \p set_union |
|
* \see \p set_intersection |
|
* \see \p set_symmetric_difference |
|
* \see \p sort |
|
* \see \p is_sorted |
|
*/ |
|
template<typename InputIterator1, |
|
typename InputIterator2, |
|
typename OutputIterator, |
|
typename StrictWeakCompare> |
|
OutputIterator set_union(InputIterator1 first1, |
|
InputIterator1 last1, |
|
InputIterator2 first2, |
|
InputIterator2 last2, |
|
OutputIterator result, |
|
StrictWeakCompare comp); |
|
|
|
|
|
/*! \p set_difference_by_key performs a key-value difference operation from set theory. |
|
* \p set_difference_by_key constructs a sorted range that is the difference of the sorted |
|
* ranges <tt>[keys_first1, keys_last1)</tt> and <tt>[keys_first2, keys_last2)</tt>. Associated |
|
* with each element from the input and output key ranges is a value element. The associated input |
|
* value ranges need not be sorted. |
|
* |
|
* In the simplest case, \p set_difference_by_key performs the "difference" operation from set |
|
* theory: the keys output range contains a copy of every element that is contained in |
|
* <tt>[keys_first1, keys_last1)</tt> and not contained in <tt>[keys_first2, keys_last2)</tt>. |
|
* The general case is more complicated, because the input ranges may contain duplicate elements. |
|
* The generalization is that if <tt>[keys_first1, keys_last1)</tt> contains \c m elements |
|
* that are equivalent to each other and if <tt>[keys_first2, keys_last2)</tt> contains \c n |
|
* elements that are equivalent to them, the last <tt>max(m-n,0)</tt> elements from |
|
* <tt>[keys_first1, keys_last1)</tt> range shall be copied to the output range. |
|
* |
|
* Each time a key element is copied from <tt>[keys_first1, keys_last1)</tt> or |
|
* <tt>[keys_first2, keys_last2)</tt> is copied to the keys output range, the |
|
* corresponding value element is copied from the corresponding values input range (beginning at |
|
* \p values_first1 or \p values_first2) to the values output range. |
|
* |
|
* This version of \p set_difference_by_key compares key elements using \c operator<. |
|
* |
|
* The algorithm's execution is parallelized as determined by \p exec. |
|
* |
|
* \param exec The execution policy to use for parallelization. |
|
* \param keys_first1 The beginning of the first input range of keys. |
|
* \param keys_last1 The end of the first input range of keys. |
|
* \param keys_first2 The beginning of the second input range of keys. |
|
* \param keys_last2 The end of the second input range of keys. |
|
* \param values_first1 The beginning of the first input range of values. |
|
* \param values_first2 The beginning of the first input range of values. |
|
* \param keys_result The beginning of the output range of keys. |
|
* \param values_result The beginning of the output range of values. |
|
* \return A \p pair \c p such that <tt>p.first</tt> is the end of the output range of keys, |
|
* and such that <tt>p.second</tt> is the end of the output range of values. |
|
* |
|
* \tparam DerivedPolicy The name of the derived execution policy. |
|
* \tparam InputIterator1 is a model of <a href="http://www.sgi.com/tech/stl/InputIterator.html">Input Iterator</a>, |
|
* \p InputIterator1 and \p InputIterator2 have the same \c value_type, |
|
* \p InputIterator1's \c value_type is a model of <a href="http://www.sgi.com/tech/stl/LessThanComparable">LessThan Comparable</a>, |
|
* the ordering on \p InputIterator1's \c value_type is a strict weak ordering, as defined in the <a href="http://www.sgi.com/tech/stl/LessThanComparable">LessThan Comparable</a> requirements, |
|
* and \p InputIterator1's \c value_type is convertable to a type in \p OutputIterator's set of \c value_types. |
|
* \tparam InputIterator2 is a model of <a href="http://www.sgi.com/tech/stl/InputIterator.html">Input Iterator</a>, |
|
* \p InputIterator2 and \p InputIterator1 have the same \c value_type, |
|
* \p InputIterator2's \c value_type is a model of <a href="http://www.sgi.com/tech/stl/LessThanComparable">LessThan Comparable</a>, |
|
* the ordering on \p InputIterator2's \c value_type is a strict weak ordering, as defined in the <a href="http://www.sgi.com/tech/stl/LessThanComparable">LessThan Comparable</a> requirements, |
|
* and \p InputIterator2's \c value_type is convertable to a type in \p OutputIterator's set of \c value_types. |
|
* \tparam InputIterator3 is a model of <a href="http://www.sgi.com/tech/stl/InputIterator.html">Input Iterator</a>, |
|
* and \p InputIterator3's \c value_type is convertible to a type in \p OutputIterator2's set of \c value_types. |
|
* \tparam InputIterator4 is a model of <a href="http://www.sgi.com/tech/stl/InputIterator.html">Input Iterator</a>, |
|
* and \p InputIterator4's \c value_type is convertible to a type in \p OutputIterator2's set of \c value_types. |
|
* \tparam OutputIterator1 is a model of <a href="http://www.sgi.com/tech/stl/OutputIterator.html">Output Iterator</a>. |
|
* \tparam OutputIterator2 is a model of <a href="http://www.sgi.com/tech/stl/OutputIterator.html">Output Iterator</a>. |
|
* |
|
* \pre The ranges <tt>[keys_first1, keys_last1)</tt> and <tt>[keys_first2, keys_last2)</tt> shall be sorted with respect to <tt>operator<</tt>. |
|
* \pre The resulting ranges shall not overlap with any input range. |
|
* |
|
* The following code snippet demonstrates how to use \p set_difference_by_key to compute the |
|
* set difference of two sets of integers sorted in ascending order with their values using the \p thrust::host |
|
* execution policy for parallelization: |
|
* |
|
* \code |
|
* #include <thrust/set_operations.h> |
|
* #include <thrust/execution_policy.h> |
|
* ... |
|
* int A_keys[6] = {0, 1, 3, 4, 5, 6, 9}; |
|
* int A_vals[6] = {0, 0, 0, 0, 0, 0, 0}; |
|
* |
|
* int B_keys[5] = {1, 3, 5, 7, 9}; |
|
* int B_vals[5] = {1, 1, 1, 1, 1}; |
|
* |
|
* int keys_result[3]; |
|
* int vals_result[3]; |
|
* |
|
* thrust::pair<int*,int*> end = thrust::set_difference_by_key(thrust::host, A_keys, A_keys + 6, B_keys, B_keys + 5, A_vals, B_vals, keys_result, vals_result); |
|
* // keys_result is now {0, 4, 6} |
|
* // vals_result is now {0, 0, 0} |
|
* \endcode |
|
* |
|
* \see \p set_union_by_key |
|
* \see \p set_intersection_by_key |
|
* \see \p set_symmetric_difference_by_key |
|
* \see \p sort_by_key |
|
* \see \p is_sorted |
|
*/ |
|
template<typename DerivedPolicy, |
|
typename InputIterator1, |
|
typename InputIterator2, |
|
typename InputIterator3, |
|
typename InputIterator4, |
|
typename OutputIterator1, |
|
typename OutputIterator2> |
|
thrust::pair<OutputIterator1,OutputIterator2> |
|
set_difference_by_key(const thrust::detail::execution_policy_base<DerivedPolicy> &exec, |
|
InputIterator1 keys_first1, |
|
InputIterator1 keys_last1, |
|
InputIterator2 keys_first2, |
|
InputIterator2 keys_last2, |
|
InputIterator3 values_first1, |
|
InputIterator4 values_first2, |
|
OutputIterator1 keys_result, |
|
OutputIterator2 values_result); |
|
|
|
|
|
/*! \p set_difference_by_key performs a key-value difference operation from set theory. |
|
* \p set_difference_by_key constructs a sorted range that is the difference of the sorted |
|
* ranges <tt>[keys_first1, keys_last1)</tt> and <tt>[keys_first2, keys_last2)</tt>. Associated |
|
* with each element from the input and output key ranges is a value element. The associated input |
|
* value ranges need not be sorted. |
|
* |
|
* In the simplest case, \p set_difference_by_key performs the "difference" operation from set |
|
* theory: the keys output range contains a copy of every element that is contained in |
|
* <tt>[keys_first1, keys_last1)</tt> and not contained in <tt>[keys_first2, keys_last2)</tt>. |
|
* The general case is more complicated, because the input ranges may contain duplicate elements. |
|
* The generalization is that if <tt>[keys_first1, keys_last1)</tt> contains \c m elements |
|
* that are equivalent to each other and if <tt>[keys_first2, keys_last2)</tt> contains \c n |
|
* elements that are equivalent to them, the last <tt>max(m-n,0)</tt> elements from |
|
* <tt>[keys_first1, keys_last1)</tt> range shall be copied to the output range. |
|
* |
|
* Each time a key element is copied from <tt>[keys_first1, keys_last1)</tt> or |
|
* <tt>[keys_first2, keys_last2)</tt> is copied to the keys output range, the |
|
* corresponding value element is copied from the corresponding values input range (beginning at |
|
* \p values_first1 or \p values_first2) to the values output range. |
|
* |
|
* This version of \p set_difference_by_key compares key elements using \c operator<. |
|
* |
|
* \param keys_first1 The beginning of the first input range of keys. |
|
* \param keys_last1 The end of the first input range of keys. |
|
* \param keys_first2 The beginning of the second input range of keys. |
|
* \param keys_last2 The end of the second input range of keys. |
|
* \param values_first1 The beginning of the first input range of values. |
|
* \param values_first2 The beginning of the first input range of values. |
|
* \param keys_result The beginning of the output range of keys. |
|
* \param values_result The beginning of the output range of values. |
|
* \return A \p pair \c p such that <tt>p.first</tt> is the end of the output range of keys, |
|
* and such that <tt>p.second</tt> is the end of the output range of values. |
|
* |
|
* \tparam InputIterator1 is a model of <a href="http://www.sgi.com/tech/stl/InputIterator.html">Input Iterator</a>, |
|
* \p InputIterator1 and \p InputIterator2 have the same \c value_type, |
|
* \p InputIterator1's \c value_type is a model of <a href="http://www.sgi.com/tech/stl/LessThanComparable">LessThan Comparable</a>, |
|
* the ordering on \p InputIterator1's \c value_type is a strict weak ordering, as defined in the <a href="http://www.sgi.com/tech/stl/LessThanComparable">LessThan Comparable</a> requirements, |
|
* and \p InputIterator1's \c value_type is convertable to a type in \p OutputIterator's set of \c value_types. |
|
* \tparam InputIterator2 is a model of <a href="http://www.sgi.com/tech/stl/InputIterator.html">Input Iterator</a>, |
|
* \p InputIterator2 and \p InputIterator1 have the same \c value_type, |
|
* \p InputIterator2's \c value_type is a model of <a href="http://www.sgi.com/tech/stl/LessThanComparable">LessThan Comparable</a>, |
|
* the ordering on \p InputIterator2's \c value_type is a strict weak ordering, as defined in the <a href="http://www.sgi.com/tech/stl/LessThanComparable">LessThan Comparable</a> requirements, |
|
* and \p InputIterator2's \c value_type is convertable to a type in \p OutputIterator's set of \c value_types. |
|
* \tparam InputIterator3 is a model of <a href="http://www.sgi.com/tech/stl/InputIterator.html">Input Iterator</a>, |
|
* and \p InputIterator3's \c value_type is convertible to a type in \p OutputIterator2's set of \c value_types. |
|
* \tparam InputIterator4 is a model of <a href="http://www.sgi.com/tech/stl/InputIterator.html">Input Iterator</a>, |
|
* and \p InputIterator4's \c value_type is convertible to a type in \p OutputIterator2's set of \c value_types. |
|
* \tparam OutputIterator1 is a model of <a href="http://www.sgi.com/tech/stl/OutputIterator.html">Output Iterator</a>. |
|
* \tparam OutputIterator2 is a model of <a href="http://www.sgi.com/tech/stl/OutputIterator.html">Output Iterator</a>. |
|
* |
|
* \pre The ranges <tt>[keys_first1, keys_last1)</tt> and <tt>[keys_first2, keys_last2)</tt> shall be sorted with respect to <tt>operator<</tt>. |
|
* \pre The resulting ranges shall not overlap with any input range. |
|
* |
|
* The following code snippet demonstrates how to use \p set_difference_by_key to compute the |
|
* set difference of two sets of integers sorted in ascending order with their values. |
|
* |
|
* \code |
|
* #include <thrust/set_operations.h> |
|
* ... |
|
* int A_keys[6] = {0, 1, 3, 4, 5, 6, 9}; |
|
* int A_vals[6] = {0, 0, 0, 0, 0, 0, 0}; |
|
* |
|
* int B_keys[5] = {1, 3, 5, 7, 9}; |
|
* int B_vals[5] = {1, 1, 1, 1, 1}; |
|
* |
|
* int keys_result[3]; |
|
* int vals_result[3]; |
|
* |
|
* thrust::pair<int*,int*> end = thrust::set_difference_by_key(A_keys, A_keys + 6, B_keys, B_keys + 5, A_vals, B_vals, keys_result, vals_result); |
|
* // keys_result is now {0, 4, 6} |
|
* // vals_result is now {0, 0, 0} |
|
* \endcode |
|
* |
|
* \see \p set_union_by_key |
|
* \see \p set_intersection_by_key |
|
* \see \p set_symmetric_difference_by_key |
|
* \see \p sort_by_key |
|
* \see \p is_sorted |
|
*/ |
|
template<typename InputIterator1, |
|
typename InputIterator2, |
|
typename InputIterator3, |
|
typename InputIterator4, |
|
typename OutputIterator1, |
|
typename OutputIterator2> |
|
thrust::pair<OutputIterator1,OutputIterator2> |
|
set_difference_by_key(InputIterator1 keys_first1, |
|
InputIterator1 keys_last1, |
|
InputIterator2 keys_first2, |
|
InputIterator2 keys_last2, |
|
InputIterator3 values_first1, |
|
InputIterator4 values_first2, |
|
OutputIterator1 keys_result, |
|
OutputIterator2 values_result); |
|
|
|
|
|
/*! \p set_difference_by_key performs a key-value difference operation from set theory. |
|
* \p set_difference_by_key constructs a sorted range that is the difference of the sorted |
|
* ranges <tt>[keys_first1, keys_last1)</tt> and <tt>[keys_first2, keys_last2)</tt>. Associated |
|
* with each element from the input and output key ranges is a value element. The associated input |
|
* value ranges need not be sorted. |
|
* |
|
* In the simplest case, \p set_difference_by_key performs the "difference" operation from set |
|
* theory: the keys output range contains a copy of every element that is contained in |
|
* <tt>[keys_first1, keys_last1)</tt> and not contained in <tt>[keys_first2, keys_last2)</tt>. |
|
* The general case is more complicated, because the input ranges may contain duplicate elements. |
|
* The generalization is that if <tt>[keys_first1, keys_last1)</tt> contains \c m elements |
|
* that are equivalent to each other and if <tt>[keys_first2, keys_last2)</tt> contains \c n |
|
* elements that are equivalent to them, the last <tt>max(m-n,0)</tt> elements from |
|
* <tt>[keys_first1, keys_last1)</tt> range shall be copied to the output range. |
|
* |
|
* Each time a key element is copied from <tt>[keys_first1, keys_last1)</tt> or |
|
* <tt>[keys_first2, keys_last2)</tt> is copied to the keys output range, the |
|
* corresponding value element is copied from the corresponding values input range (beginning at |
|
* \p values_first1 or \p values_first2) to the values output range. |
|
* |
|
* This version of \p set_difference_by_key compares key elements using a function object \p comp. |
|
* |
|
* The algorithm's execution is parallelized as determined by \p exec. |
|
* |
|
* \param exec The execution policy to use for parallelization. |
|
* \param keys_first1 The beginning of the first input range of keys. |
|
* \param keys_last1 The end of the first input range of keys. |
|
* \param keys_first2 The beginning of the second input range of keys. |
|
* \param keys_last2 The end of the second input range of keys. |
|
* \param values_first1 The beginning of the first input range of values. |
|
* \param values_first2 The beginning of the first input range of values. |
|
* \param keys_result The beginning of the output range of keys. |
|
* \param values_result The beginning of the output range of values. |
|
* \param comp Comparison operator. |
|
* \return A \p pair \c p such that <tt>p.first</tt> is the end of the output range of keys, |
|
* and such that <tt>p.second</tt> is the end of the output range of values. |
|
* |
|
* \tparam DerivedPolicy The name of the derived execution policy. |
|
* \tparam InputIterator1 is a model of <a href="http://www.sgi.com/tech/stl/InputIterator.html">Input Iterator</a>, |
|
* \p InputIterator1 and \p InputIterator2 have the same \c value_type, |
|
* \p InputIterator1's \c value_type is a model of <a href="http://www.sgi.com/tech/stl/LessThanComparable">LessThan Comparable</a>, |
|
* the ordering on \p InputIterator1's \c value_type is a strict weak ordering, as defined in the <a href="http://www.sgi.com/tech/stl/LessThanComparable">LessThan Comparable</a> requirements, |
|
* and \p InputIterator1's \c value_type is convertable to a type in \p OutputIterator's set of \c value_types. |
|
* \tparam InputIterator2 is a model of <a href="http://www.sgi.com/tech/stl/InputIterator.html">Input Iterator</a>, |
|
* \p InputIterator2 and \p InputIterator1 have the same \c value_type, |
|
* \p InputIterator2's \c value_type is a model of <a href="http://www.sgi.com/tech/stl/LessThanComparable">LessThan Comparable</a>, |
|
* the ordering on \p InputIterator2's \c value_type is a strict weak ordering, as defined in the <a href="http://www.sgi.com/tech/stl/LessThanComparable">LessThan Comparable</a> requirements, |
|
* and \p InputIterator2's \c value_type is convertable to a type in \p OutputIterator's set of \c value_types. |
|
* \tparam InputIterator3 is a model of <a href="http://www.sgi.com/tech/stl/InputIterator.html">Input Iterator</a>, |
|
* and \p InputIterator3's \c value_type is convertible to a type in \p OutputIterator2's set of \c value_types. |
|
* \tparam InputIterator4 is a model of <a href="http://www.sgi.com/tech/stl/InputIterator.html">Input Iterator</a>, |
|
* and \p InputIterator4's \c value_type is convertible to a type in \p OutputIterator2's set of \c value_types. |
|
* \tparam OutputIterator1 is a model of <a href="http://www.sgi.com/tech/stl/OutputIterator.html">Output Iterator</a>. |
|
* \tparam OutputIterator2 is a model of <a href="http://www.sgi.com/tech/stl/OutputIterator.html">Output Iterator</a>. |
|
* \tparam StrictWeakCompare is a model of <a href="http://www.sgi.com/tech/stl/StrictWeakOrdering.html">Strict Weak Ordering</a>. |
|
* |
|
* \pre The ranges <tt>[keys_first1, keys_last1)</tt> and <tt>[keys_first2, keys_last2)</tt> shall be sorted with respect to \p comp. |
|
* \pre The resulting ranges shall not overlap with any input range. |
|
* |
|
* The following code snippet demonstrates how to use \p set_difference_by_key to compute the |
|
* set difference of two sets of integers sorted in descending order with their values using the \p thrust::host |
|
* execution policy for parallelization: |
|
* |
|
* \code |
|
* #include <thrust/set_operations.h> |
|
* #include <thrust/functional.h> |
|
* #include <thrust/execution_policy.h> |
|
* ... |
|
* int A_keys[6] = {9, 6, 5, 4, 3, 1, 0}; |
|
* int A_vals[6] = {0, 0, 0, 0, 0, 0, 0}; |
|
* |
|
* int B_keys[5] = {9, 7, 5, 3, 1}; |
|
* int B_vals[5] = {1, 1, 1, 1, 1}; |
|
* |
|
* int keys_result[3]; |
|
* int vals_result[3]; |
|
* |
|
* thrust::pair<int*,int*> end = thrust::set_difference_by_key(thrust::host, A_keys, A_keys + 6, B_keys, B_keys + 5, A_vals, B_vals, keys_result, vals_result, thrust::greater<int>()); |
|
* // keys_result is now {0, 4, 6} |
|
* // vals_result is now {0, 0, 0} |
|
* \endcode |
|
* |
|
* \see \p set_union_by_key |
|
* \see \p set_intersection_by_key |
|
* \see \p set_symmetric_difference_by_key |
|
* \see \p sort_by_key |
|
* \see \p is_sorted |
|
*/ |
|
template<typename DerivedPolicy, |
|
typename InputIterator1, |
|
typename InputIterator2, |
|
typename InputIterator3, |
|
typename InputIterator4, |
|
typename OutputIterator1, |
|
typename OutputIterator2, |
|
typename StrictWeakCompare> |
|
thrust::pair<OutputIterator1,OutputIterator2> |
|
set_difference_by_key(const thrust::detail::execution_policy_base<DerivedPolicy> &exec, |
|
InputIterator1 keys_first1, |
|
InputIterator1 keys_last1, |
|
InputIterator2 keys_first2, |
|
InputIterator2 keys_last2, |
|
InputIterator3 values_first1, |
|
InputIterator4 values_first2, |
|
OutputIterator1 keys_result, |
|
OutputIterator2 values_result, |
|
StrictWeakCompare comp); |
|
|
|
|
|
/*! \p set_difference_by_key performs a key-value difference operation from set theory. |
|
* \p set_difference_by_key constructs a sorted range that is the difference of the sorted |
|
* ranges <tt>[keys_first1, keys_last1)</tt> and <tt>[keys_first2, keys_last2)</tt>. Associated |
|
* with each element from the input and output key ranges is a value element. The associated input |
|
* value ranges need not be sorted. |
|
* |
|
* In the simplest case, \p set_difference_by_key performs the "difference" operation from set |
|
* theory: the keys output range contains a copy of every element that is contained in |
|
* <tt>[keys_first1, keys_last1)</tt> and not contained in <tt>[keys_first2, keys_last2)</tt>. |
|
* The general case is more complicated, because the input ranges may contain duplicate elements. |
|
* The generalization is that if <tt>[keys_first1, keys_last1)</tt> contains \c m elements |
|
* that are equivalent to each other and if <tt>[keys_first2, keys_last2)</tt> contains \c n |
|
* elements that are equivalent to them, the last <tt>max(m-n,0)</tt> elements from |
|
* <tt>[keys_first1, keys_last1)</tt> range shall be copied to the output range. |
|
* |
|
* Each time a key element is copied from <tt>[keys_first1, keys_last1)</tt> or |
|
* <tt>[keys_first2, keys_last2)</tt> is copied to the keys output range, the |
|
* corresponding value element is copied from the corresponding values input range (beginning at |
|
* \p values_first1 or \p values_first2) to the values output range. |
|
* |
|
* This version of \p set_difference_by_key compares key elements using a function object \p comp. |
|
* |
|
* \param keys_first1 The beginning of the first input range of keys. |
|
* \param keys_last1 The end of the first input range of keys. |
|
* \param keys_first2 The beginning of the second input range of keys. |
|
* \param keys_last2 The end of the second input range of keys. |
|
* \param values_first1 The beginning of the first input range of values. |
|
* \param values_first2 The beginning of the first input range of values. |
|
* \param keys_result The beginning of the output range of keys. |
|
* \param values_result The beginning of the output range of values. |
|
* \param comp Comparison operator. |
|
* \return A \p pair \c p such that <tt>p.first</tt> is the end of the output range of keys, |
|
* and such that <tt>p.second</tt> is the end of the output range of values. |
|
* |
|
* \tparam InputIterator1 is a model of <a href="http://www.sgi.com/tech/stl/InputIterator.html">Input Iterator</a>, |
|
* \p InputIterator1 and \p InputIterator2 have the same \c value_type, |
|
* \p InputIterator1's \c value_type is a model of <a href="http://www.sgi.com/tech/stl/LessThanComparable">LessThan Comparable</a>, |
|
* the ordering on \p InputIterator1's \c value_type is a strict weak ordering, as defined in the <a href="http://www.sgi.com/tech/stl/LessThanComparable">LessThan Comparable</a> requirements, |
|
* and \p InputIterator1's \c value_type is convertable to a type in \p OutputIterator's set of \c value_types. |
|
* \tparam InputIterator2 is a model of <a href="http://www.sgi.com/tech/stl/InputIterator.html">Input Iterator</a>, |
|
* \p InputIterator2 and \p InputIterator1 have the same \c value_type, |
|
* \p InputIterator2's \c value_type is a model of <a href="http://www.sgi.com/tech/stl/LessThanComparable">LessThan Comparable</a>, |
|
* the ordering on \p InputIterator2's \c value_type is a strict weak ordering, as defined in the <a href="http://www.sgi.com/tech/stl/LessThanComparable">LessThan Comparable</a> requirements, |
|
* and \p InputIterator2's \c value_type is convertable to a type in \p OutputIterator's set of \c value_types. |
|
* \tparam InputIterator3 is a model of <a href="http://www.sgi.com/tech/stl/InputIterator.html">Input Iterator</a>, |
|
* and \p InputIterator3's \c value_type is convertible to a type in \p OutputIterator2's set of \c value_types. |
|
* \tparam InputIterator4 is a model of <a href="http://www.sgi.com/tech/stl/InputIterator.html">Input Iterator</a>, |
|
* and \p InputIterator4's \c value_type is convertible to a type in \p OutputIterator2's set of \c value_types. |
|
* \tparam OutputIterator1 is a model of <a href="http://www.sgi.com/tech/stl/OutputIterator.html">Output Iterator</a>. |
|
* \tparam OutputIterator2 is a model of <a href="http://www.sgi.com/tech/stl/OutputIterator.html">Output Iterator</a>. |
|
* \tparam StrictWeakCompare is a model of <a href="http://www.sgi.com/tech/stl/StrictWeakOrdering.html">Strict Weak Ordering</a>. |
|
* |
|
* \pre The ranges <tt>[keys_first1, keys_last1)</tt> and <tt>[keys_first2, keys_last2)</tt> shall be sorted with respect to \p comp. |
|
* \pre The resulting ranges shall not overlap with any input range. |
|
* |
|
* The following code snippet demonstrates how to use \p set_difference_by_key to compute the |
|
* set difference of two sets of integers sorted in descending order with their values. |
|
* |
|
* \code |
|
* #include <thrust/set_operations.h> |
|
* #include <thrust/functional.h> |
|
* ... |
|
* int A_keys[6] = {9, 6, 5, 4, 3, 1, 0}; |
|
* int A_vals[6] = {0, 0, 0, 0, 0, 0, 0}; |
|
* |
|
* int B_keys[5] = {9, 7, 5, 3, 1}; |
|
* int B_vals[5] = {1, 1, 1, 1, 1}; |
|
* |
|
* int keys_result[3]; |
|
* int vals_result[3]; |
|
* |
|
* thrust::pair<int*,int*> end = thrust::set_difference_by_key(A_keys, A_keys + 6, B_keys, B_keys + 5, A_vals, B_vals, keys_result, vals_result, thrust::greater<int>()); |
|
* // keys_result is now {0, 4, 6} |
|
* // vals_result is now {0, 0, 0} |
|
* \endcode |
|
* |
|
* \see \p set_union_by_key |
|
* \see \p set_intersection_by_key |
|
* \see \p set_symmetric_difference_by_key |
|
* \see \p sort_by_key |
|
* \see \p is_sorted |
|
*/ |
|
template<typename InputIterator1, |
|
typename InputIterator2, |
|
typename InputIterator3, |
|
typename InputIterator4, |
|
typename OutputIterator1, |
|
typename OutputIterator2, |
|
typename StrictWeakCompare> |
|
thrust::pair<OutputIterator1,OutputIterator2> |
|
set_difference_by_key(InputIterator1 keys_first1, |
|
InputIterator1 keys_last1, |
|
InputIterator2 keys_first2, |
|
InputIterator2 keys_last2, |
|
InputIterator3 values_first1, |
|
InputIterator4 values_first2, |
|
OutputIterator1 keys_result, |
|
OutputIterator2 values_result, |
|
StrictWeakCompare comp); |
|
|
|
|
|
/*! \p set_intersection_by_key performs a key-value intersection operation from set theory. |
|
* \p set_intersection_by_key constructs a sorted range that is the intersection of the sorted |
|
* ranges <tt>[keys_first1, keys_last1)</tt> and <tt>[keys_first2, keys_last2)</tt>. Associated |
|
* with each element from the input and output key ranges is a value element. The associated input |
|
* value ranges need not be sorted. |
|
* |
|
* In the simplest case, \p set_intersection_by_key performs the "intersection" operation from set |
|
* theory: the keys output range contains a copy of every element that is contained in both |
|
* <tt>[keys_first1, keys_last1)</tt> <tt>[keys_first2, keys_last2)</tt>. |
|
* The general case is more complicated, because the input ranges may contain duplicate elements. |
|
* The generalization is that if an element appears \c m times in <tt>[keys_first1, keys_last1)</tt> |
|
* and \c n times in <tt>[keys_first2, keys_last2)</tt> (where \c m may be zero), then it |
|
* appears <tt>min(m,n)</tt> times in the keys output range. |
|
* \p set_intersection_by_key is stable, meaning both that elements are copied from the first |
|
* input range rather than the second, and that the relative order of elements in the output range |
|
* is the same as the first input range. |
|
* |
|
* Each time a key element is copied from <tt>[keys_first1, keys_last1)</tt> to the keys output range, |
|
* the corresponding value element is copied from <tt>[values_first1, values_last1)</tt> to the values |
|
* output range. |
|
* |
|
* This version of \p set_intersection_by_key compares objects using \c operator<. |
|
* |
|
* The algorithm's execution is parallelized as determined by \p exec. |
|
* |
|
* \param exec The execution policy to use for parallelization. |
|
* \param keys_first1 The beginning of the first input range of keys. |
|
* \param keys_last1 The end of the first input range of keys. |
|
* \param keys_first2 The beginning of the second input range of keys. |
|
* \param keys_last2 The end of the second input range of keys. |
|
* \param values_first1 The beginning of the first input range of values. |
|
* \param keys_result The beginning of the output range of keys. |
|
* \param values_result The beginning of the output range of values. |
|
* \return A \p pair \c p such that <tt>p.first</tt> is the end of the output range of keys, |
|
* and such that <tt>p.second</tt> is the end of the output range of values. |
|
* |
|
* \note Unlike the other key-value set operations, \p set_intersection_by_key is unique in that it has no |
|
* \c values_first2 parameter because elements from the second input range are never copied to the output range. |
|
* |
|
* \tparam DerivedPolicy The name of the derived execution policy. |
|
* \tparam InputIterator1 is a model of <a href="http://www.sgi.com/tech/stl/InputIterator.html">Input Iterator</a>, |
|
* \p InputIterator1 and \p InputIterator2 have the same \c value_type, |
|
* \p InputIterator1's \c value_type is a model of <a href="http://www.sgi.com/tech/stl/LessThanComparable">LessThan Comparable</a>, |
|
* the ordering on \p InputIterator1's \c value_type is a strict weak ordering, as defined in the <a href="http://www.sgi.com/tech/stl/LessThanComparable">LessThan Comparable</a> requirements, |
|
* and \p InputIterator1's \c value_type is convertable to a type in \p OutputIterator's set of \c value_types. |
|
* \tparam InputIterator2 is a model of <a href="http://www.sgi.com/tech/stl/InputIterator.html">Input Iterator</a>, |
|
* \p InputIterator2 and \p InputIterator1 have the same \c value_type, |
|
* \p InputIterator2's \c value_type is a model of <a href="http://www.sgi.com/tech/stl/LessThanComparable">LessThan Comparable</a>, |
|
* the ordering on \p InputIterator2's \c value_type is a strict weak ordering, as defined in the <a href="http://www.sgi.com/tech/stl/LessThanComparable">LessThan Comparable</a> requirements, |
|
* and \p InputIterator2's \c value_type is convertable to a type in \p OutputIterator's set of \c value_types. |
|
* \tparam InputIterator3 is a model of <a href="http://www.sgi.com/tech/stl/InputIterator.html">Input Iterator</a>, |
|
* and \p InputIterator3's \c value_type is convertible to a type in \p OutputIterator2's set of \c value_types. |
|
* \tparam OutputIterator1 is a model of <a href="http://www.sgi.com/tech/stl/OutputIterator.html">Output Iterator</a>. |
|
* \tparam OutputIterator2 is a model of <a href="http://www.sgi.com/tech/stl/OutputIterator.html">Output Iterator</a>. |
|
* |
|
* \pre The ranges <tt>[keys_first1, keys_last1)</tt> and <tt>[keys_first2, keys_last2)</tt> shall be sorted with respect to <tt>operator<</tt>. |
|
* \pre The resulting ranges shall not overlap with any input range. |
|
* |
|
* The following code snippet demonstrates how to use \p set_intersection_by_key to compute the |
|
* set intersection of two sets of integers sorted in ascending order with their values using the \p thrust::host |
|
* execution policy for parallelization: |
|
* |
|
* \code |
|
* #include <thrust/set_operations.h> |
|
* #include <thrust/execution_policy.h> |
|
* ... |
|
* int A_keys[6] = {1, 3, 5, 7, 9, 11}; |
|
* int A_vals[6] = {0, 0, 0, 0, 0, 0}; |
|
* |
|
* int B_keys[7] = {1, 1, 2, 3, 5, 8, 13}; |
|
* |
|
* int keys_result[7]; |
|
* int vals_result[7]; |
|
* |
|
* thrust::pair<int*,int*> end = thrust::set_intersection_by_key(thrust::host, A_keys, A_keys + 6, B_keys, B_keys + 7, A_vals, keys_result, vals_result); |
|
* |
|
* // keys_result is now {1, 3, 5} |
|
* // vals_result is now {0, 0, 0} |
|
* \endcode |
|
* |
|
* \see \p set_union_by_key |
|
* \see \p set_difference_by_key |
|
* \see \p set_symmetric_difference_by_key |
|
* \see \p sort_by_key |
|
* \see \p is_sorted |
|
*/ |
|
template<typename DerivedPolicy, |
|
typename InputIterator1, |
|
typename InputIterator2, |
|
typename InputIterator3, |
|
typename OutputIterator1, |
|
typename OutputIterator2> |
|
thrust::pair<OutputIterator1,OutputIterator2> |
|
set_intersection_by_key(const thrust::detail::execution_policy_base<DerivedPolicy> &exec, |
|
InputIterator1 keys_first1, |
|
InputIterator1 keys_last1, |
|
InputIterator2 keys_first2, |
|
InputIterator2 keys_last2, |
|
InputIterator3 values_first1, |
|
OutputIterator1 keys_result, |
|
OutputIterator2 values_result); |
|
|
|
|
|
/*! \p set_intersection_by_key performs a key-value intersection operation from set theory. |
|
* \p set_intersection_by_key constructs a sorted range that is the intersection of the sorted |
|
* ranges <tt>[keys_first1, keys_last1)</tt> and <tt>[keys_first2, keys_last2)</tt>. Associated |
|
* with each element from the input and output key ranges is a value element. The associated input |
|
* value ranges need not be sorted. |
|
* |
|
* In the simplest case, \p set_intersection_by_key performs the "intersection" operation from set |
|
* theory: the keys output range contains a copy of every element that is contained in both |
|
* <tt>[keys_first1, keys_last1)</tt> <tt>[keys_first2, keys_last2)</tt>. |
|
* The general case is more complicated, because the input ranges may contain duplicate elements. |
|
* The generalization is that if an element appears \c m times in <tt>[keys_first1, keys_last1)</tt> |
|
* and \c n times in <tt>[keys_first2, keys_last2)</tt> (where \c m may be zero), then it |
|
* appears <tt>min(m,n)</tt> times in the keys output range. |
|
* \p set_intersection_by_key is stable, meaning both that elements are copied from the first |
|
* input range rather than the second, and that the relative order of elements in the output range |
|
* is the same as the first input range. |
|
* |
|
* Each time a key element is copied from <tt>[keys_first1, keys_last1)</tt> to the keys output range, |
|
* the corresponding value element is copied from <tt>[values_first1, values_last1)</tt> to the values |
|
* output range. |
|
* |
|
* This version of \p set_intersection_by_key compares objects using \c operator<. |
|
* |
|
* \param keys_first1 The beginning of the first input range of keys. |
|
* \param keys_last1 The end of the first input range of keys. |
|
* \param keys_first2 The beginning of the second input range of keys. |
|
* \param keys_last2 The end of the second input range of keys. |
|
* \param values_first1 The beginning of the first input range of values. |
|
* \param keys_result The beginning of the output range of keys. |
|
* \param values_result The beginning of the output range of values. |
|
* \return A \p pair \c p such that <tt>p.first</tt> is the end of the output range of keys, |
|
* and such that <tt>p.second</tt> is the end of the output range of values. |
|
* |
|
* \note Unlike the other key-value set operations, \p set_intersection_by_key is unique in that it has no |
|
* \c values_first2 parameter because elements from the second input range are never copied to the output range. |
|
* |
|
* \tparam InputIterator1 is a model of <a href="http://www.sgi.com/tech/stl/InputIterator.html">Input Iterator</a>, |
|
* \p InputIterator1 and \p InputIterator2 have the same \c value_type, |
|
* \p InputIterator1's \c value_type is a model of <a href="http://www.sgi.com/tech/stl/LessThanComparable">LessThan Comparable</a>, |
|
* the ordering on \p InputIterator1's \c value_type is a strict weak ordering, as defined in the <a href="http://www.sgi.com/tech/stl/LessThanComparable">LessThan Comparable</a> requirements, |
|
* and \p InputIterator1's \c value_type is convertable to a type in \p OutputIterator's set of \c value_types. |
|
* \tparam InputIterator2 is a model of <a href="http://www.sgi.com/tech/stl/InputIterator.html">Input Iterator</a>, |
|
* \p InputIterator2 and \p InputIterator1 have the same \c value_type, |
|
* \p InputIterator2's \c value_type is a model of <a href="http://www.sgi.com/tech/stl/LessThanComparable">LessThan Comparable</a>, |
|
* the ordering on \p InputIterator2's \c value_type is a strict weak ordering, as defined in the <a href="http://www.sgi.com/tech/stl/LessThanComparable">LessThan Comparable</a> requirements, |
|
* and \p InputIterator2's \c value_type is convertable to a type in \p OutputIterator's set of \c value_types. |
|
* \tparam InputIterator3 is a model of <a href="http://www.sgi.com/tech/stl/InputIterator.html">Input Iterator</a>, |
|
* and \p InputIterator3's \c value_type is convertible to a type in \p OutputIterator2's set of \c value_types. |
|
* \tparam OutputIterator1 is a model of <a href="http://www.sgi.com/tech/stl/OutputIterator.html">Output Iterator</a>. |
|
* \tparam OutputIterator2 is a model of <a href="http://www.sgi.com/tech/stl/OutputIterator.html">Output Iterator</a>. |
|
* |
|
* \pre The ranges <tt>[keys_first1, keys_last1)</tt> and <tt>[keys_first2, keys_last2)</tt> shall be sorted with respect to <tt>operator<</tt>. |
|
* \pre The resulting ranges shall not overlap with any input range. |
|
* |
|
* The following code snippet demonstrates how to use \p set_intersection_by_key to compute the |
|
* set intersection of two sets of integers sorted in ascending order with their values. |
|
* |
|
* \code |
|
* #include <thrust/set_operations.h> |
|
* ... |
|
* int A_keys[6] = {1, 3, 5, 7, 9, 11}; |
|
* int A_vals[6] = {0, 0, 0, 0, 0, 0}; |
|
* |
|
* int B_keys[7] = {1, 1, 2, 3, 5, 8, 13}; |
|
* |
|
* int keys_result[7]; |
|
* int vals_result[7]; |
|
* |
|
* thrust::pair<int*,int*> end = thrust::set_intersection_by_key(A_keys, A_keys + 6, B_keys, B_keys + 7, A_vals, keys_result, vals_result); |
|
* |
|
* // keys_result is now {1, 3, 5} |
|
* // vals_result is now {0, 0, 0} |
|
* \endcode |
|
* |
|
* \see \p set_union_by_key |
|
* \see \p set_difference_by_key |
|
* \see \p set_symmetric_difference_by_key |
|
* \see \p sort_by_key |
|
* \see \p is_sorted |
|
*/ |
|
template<typename InputIterator1, |
|
typename InputIterator2, |
|
typename InputIterator3, |
|
typename OutputIterator1, |
|
typename OutputIterator2> |
|
thrust::pair<OutputIterator1,OutputIterator2> |
|
set_intersection_by_key(InputIterator1 keys_first1, |
|
InputIterator1 keys_last1, |
|
InputIterator2 keys_first2, |
|
InputIterator2 keys_last2, |
|
InputIterator3 values_first1, |
|
OutputIterator1 keys_result, |
|
OutputIterator2 values_result); |
|
|
|
|
|
/*! \p set_intersection_by_key performs a key-value intersection operation from set theory. |
|
* \p set_intersection_by_key constructs a sorted range that is the intersection of the sorted |
|
* ranges <tt>[keys_first1, keys_last1)</tt> and <tt>[keys_first2, keys_last2)</tt>. Associated |
|
* with each element from the input and output key ranges is a value element. The associated input |
|
* value ranges need not be sorted. |
|
* |
|
* In the simplest case, \p set_intersection_by_key performs the "intersection" operation from set |
|
* theory: the keys output range contains a copy of every element that is contained in both |
|
* <tt>[keys_first1, keys_last1)</tt> <tt>[keys_first2, keys_last2)</tt>. |
|
* The general case is more complicated, because the input ranges may contain duplicate elements. |
|
* The generalization is that if an element appears \c m times in <tt>[keys_first1, keys_last1)</tt> |
|
* and \c n times in <tt>[keys_first2, keys_last2)</tt> (where \c m may be zero), then it |
|
* appears <tt>min(m,n)</tt> times in the keys output range. |
|
* \p set_intersection_by_key is stable, meaning both that elements are copied from the first |
|
* input range rather than the second, and that the relative order of elements in the output range |
|
* is the same as the first input range. |
|
* |
|
* Each time a key element is copied from <tt>[keys_first1, keys_last1)</tt> to the keys output range, |
|
* the corresponding value element is copied from <tt>[values_first1, values_last1)</tt> to the values |
|
* output range. |
|
* |
|
* This version of \p set_intersection_by_key compares objects using a function object \p comp. |
|
* |
|
* The algorithm's execution is parallelized as determined by \p exec. |
|
* |
|
* \param exec The execution policy to use for parallelization. |
|
* \param keys_first1 The beginning of the first input range of keys. |
|
* \param keys_last1 The end of the first input range of keys. |
|
* \param keys_first2 The beginning of the second input range of keys. |
|
* \param keys_last2 The end of the second input range of keys. |
|
* \param values_first1 The beginning of the first input range of values. |
|
* \param keys_result The beginning of the output range of keys. |
|
* \param values_result The beginning of the output range of values. |
|
* \param comp Comparison operator. |
|
* \return A \p pair \c p such that <tt>p.first</tt> is the end of the output range of keys, |
|
* and such that <tt>p.second</tt> is the end of the output range of values. |
|
* |
|
* \note Unlike the other key-value set operations, \p set_intersection_by_key is unique in that it has no |
|
* \c values_first2 parameter because elements from the second input range are never copied to the output range. |
|
* |
|
* \tparam DerivedPolicy The name of the derived execution policy. |
|
* \tparam InputIterator1 is a model of <a href="http://www.sgi.com/tech/stl/InputIterator.html">Input Iterator</a>, |
|
* \p InputIterator1 and \p InputIterator2 have the same \c value_type, |
|
* \p InputIterator1's \c value_type is a model of <a href="http://www.sgi.com/tech/stl/LessThanComparable">LessThan Comparable</a>, |
|
* the ordering on \p InputIterator1's \c value_type is a strict weak ordering, as defined in the <a href="http://www.sgi.com/tech/stl/LessThanComparable">LessThan Comparable</a> requirements, |
|
* and \p InputIterator1's \c value_type is convertable to a type in \p OutputIterator's set of \c value_types. |
|
* \tparam InputIterator2 is a model of <a href="http://www.sgi.com/tech/stl/InputIterator.html">Input Iterator</a>, |
|
* \p InputIterator2 and \p InputIterator1 have the same \c value_type, |
|
* \p InputIterator2's \c value_type is a model of <a href="http://www.sgi.com/tech/stl/LessThanComparable">LessThan Comparable</a>, |
|
* the ordering on \p InputIterator2's \c value_type is a strict weak ordering, as defined in the <a href="http://www.sgi.com/tech/stl/LessThanComparable">LessThan Comparable</a> requirements, |
|
* and \p InputIterator2's \c value_type is convertable to a type in \p OutputIterator's set of \c value_types. |
|
* \tparam InputIterator3 is a model of <a href="http://www.sgi.com/tech/stl/InputIterator.html">Input Iterator</a>, |
|
* and \p InputIterator3's \c value_type is convertible to a type in \p OutputIterator2's set of \c value_types. |
|
* \tparam OutputIterator1 is a model of <a href="http://www.sgi.com/tech/stl/OutputIterator.html">Output Iterator</a>. |
|
* \tparam OutputIterator2 is a model of <a href="http://www.sgi.com/tech/stl/OutputIterator.html">Output Iterator</a>. |
|
* \tparam StrictWeakCompare is a model of <a href="http://www.sgi.com/tech/stl/StrictWeakOrdering.html">Strict Weak Ordering</a>. |
|
* |
|
* \pre The ranges <tt>[keys_first1, keys_last1)</tt> and <tt>[keys_first2, keys_last2)</tt> shall be sorted with respect to \p comp. |
|
* \pre The resulting ranges shall not overlap with any input range. |
|
* |
|
* The following code snippet demonstrates how to use \p set_intersection_by_key to compute the |
|
* set intersection of two sets of integers sorted in descending order with their values using the |
|
* \p thrust::host execution policy for parallelization: |
|
* |
|
* \code |
|
* #include <thrust/set_operations.h> |
|
* #include <thrust/functional.h> |
|
* #include <thrust/execution_policy.h> |
|
* ... |
|
* int A_keys[6] = {11, 9, 7, 5, 3, 1}; |
|
* int A_vals[6] = { 0, 0, 0, 0, 0, 0}; |
|
* |
|
* int B_keys[7] = {13, 8, 5, 3, 2, 1, 1}; |
|
* |
|
* int keys_result[7]; |
|
* int vals_result[7]; |
|
* |
|
* thrust::pair<int*,int*> end = thrust::set_intersection_by_key(thrust::host, A_keys, A_keys + 6, B_keys, B_keys + 7, A_vals, keys_result, vals_result, thrust::greater<int>()); |
|
* |
|
* // keys_result is now {5, 3, 1} |
|
* // vals_result is now {0, 0, 0} |
|
* \endcode |
|
* |
|
* \see \p set_union_by_key |
|
* \see \p set_difference_by_key |
|
* \see \p set_symmetric_difference_by_key |
|
* \see \p sort_by_key |
|
* \see \p is_sorted |
|
*/ |
|
template<typename DerivedPolicy, |
|
typename InputIterator1, |
|
typename InputIterator2, |
|
typename InputIterator3, |
|
typename OutputIterator1, |
|
typename OutputIterator2, |
|
typename StrictWeakCompare> |
|
thrust::pair<OutputIterator1,OutputIterator2> |
|
set_intersection_by_key(const thrust::detail::execution_policy_base<DerivedPolicy> &exec, |
|
InputIterator1 keys_first1, |
|
InputIterator1 keys_last1, |
|
InputIterator2 keys_first2, |
|
InputIterator2 keys_last2, |
|
InputIterator3 values_first1, |
|
OutputIterator1 keys_result, |
|
OutputIterator2 values_result, |
|
StrictWeakCompare comp); |
|
|
|
|
|
/*! \p set_intersection_by_key performs a key-value intersection operation from set theory. |
|
* \p set_intersection_by_key constructs a sorted range that is the intersection of the sorted |
|
* ranges <tt>[keys_first1, keys_last1)</tt> and <tt>[keys_first2, keys_last2)</tt>. Associated |
|
* with each element from the input and output key ranges is a value element. The associated input |
|
* value ranges need not be sorted. |
|
* |
|
* In the simplest case, \p set_intersection_by_key performs the "intersection" operation from set |
|
* theory: the keys output range contains a copy of every element that is contained in both |
|
* <tt>[keys_first1, keys_last1)</tt> <tt>[keys_first2, keys_last2)</tt>. |
|
* The general case is more complicated, because the input ranges may contain duplicate elements. |
|
* The generalization is that if an element appears \c m times in <tt>[keys_first1, keys_last1)</tt> |
|
* and \c n times in <tt>[keys_first2, keys_last2)</tt> (where \c m may be zero), then it |
|
* appears <tt>min(m,n)</tt> times in the keys output range. |
|
* \p set_intersection_by_key is stable, meaning both that elements are copied from the first |
|
* input range rather than the second, and that the relative order of elements in the output range |
|
* is the same as the first input range. |
|
* |
|
* Each time a key element is copied from <tt>[keys_first1, keys_last1)</tt> to the keys output range, |
|
* the corresponding value element is copied from <tt>[values_first1, values_last1)</tt> to the values |
|
* output range. |
|
* |
|
* This version of \p set_intersection_by_key compares objects using a function object \p comp. |
|
* |
|
* \param keys_first1 The beginning of the first input range of keys. |
|
* \param keys_last1 The end of the first input range of keys. |
|
* \param keys_first2 The beginning of the second input range of keys. |
|
* \param keys_last2 The end of the second input range of keys. |
|
* \param values_first1 The beginning of the first input range of values. |
|
* \param keys_result The beginning of the output range of keys. |
|
* \param values_result The beginning of the output range of values. |
|
* \param comp Comparison operator. |
|
* \return A \p pair \c p such that <tt>p.first</tt> is the end of the output range of keys, |
|
* and such that <tt>p.second</tt> is the end of the output range of values. |
|
* |
|
* \note Unlike the other key-value set operations, \p set_intersection_by_key is unique in that it has no |
|
* \c values_first2 parameter because elements from the second input range are never copied to the output range. |
|
* |
|
* \tparam InputIterator1 is a model of <a href="http://www.sgi.com/tech/stl/InputIterator.html">Input Iterator</a>, |
|
* \p InputIterator1 and \p InputIterator2 have the same \c value_type, |
|
* \p InputIterator1's \c value_type is a model of <a href="http://www.sgi.com/tech/stl/LessThanComparable">LessThan Comparable</a>, |
|
* the ordering on \p InputIterator1's \c value_type is a strict weak ordering, as defined in the <a href="http://www.sgi.com/tech/stl/LessThanComparable">LessThan Comparable</a> requirements, |
|
* and \p InputIterator1's \c value_type is convertable to a type in \p OutputIterator's set of \c value_types. |
|
* \tparam InputIterator2 is a model of <a href="http://www.sgi.com/tech/stl/InputIterator.html">Input Iterator</a>, |
|
* \p InputIterator2 and \p InputIterator1 have the same \c value_type, |
|
* \p InputIterator2's \c value_type is a model of <a href="http://www.sgi.com/tech/stl/LessThanComparable">LessThan Comparable</a>, |
|
* the ordering on \p InputIterator2's \c value_type is a strict weak ordering, as defined in the <a href="http://www.sgi.com/tech/stl/LessThanComparable">LessThan Comparable</a> requirements, |
|
* and \p InputIterator2's \c value_type is convertable to a type in \p OutputIterator's set of \c value_types. |
|
* \tparam InputIterator3 is a model of <a href="http://www.sgi.com/tech/stl/InputIterator.html">Input Iterator</a>, |
|
* and \p InputIterator3's \c value_type is convertible to a type in \p OutputIterator2's set of \c value_types. |
|
* \tparam OutputIterator1 is a model of <a href="http://www.sgi.com/tech/stl/OutputIterator.html">Output Iterator</a>. |
|
* \tparam OutputIterator2 is a model of <a href="http://www.sgi.com/tech/stl/OutputIterator.html">Output Iterator</a>. |
|
* \tparam StrictWeakCompare is a model of <a href="http://www.sgi.com/tech/stl/StrictWeakOrdering.html">Strict Weak Ordering</a>. |
|
* |
|
* \pre The ranges <tt>[keys_first1, keys_last1)</tt> and <tt>[keys_first2, keys_last2)</tt> shall be sorted with respect to \p comp. |
|
* \pre The resulting ranges shall not overlap with any input range. |
|
* |
|
* The following code snippet demonstrates how to use \p set_intersection_by_key to compute the |
|
* set intersection of two sets of integers sorted in descending order with their values. |
|
* |
|
* \code |
|
* #include <thrust/set_operations.h> |
|
* #include <thrust/functional.h> |
|
* ... |
|
* int A_keys[6] = {11, 9, 7, 5, 3, 1}; |
|
* int A_vals[6] = { 0, 0, 0, 0, 0, 0}; |
|
* |
|
* int B_keys[7] = {13, 8, 5, 3, 2, 1, 1}; |
|
* |
|
* int keys_result[7]; |
|
* int vals_result[7]; |
|
* |
|
* thrust::pair<int*,int*> end = thrust::set_intersection_by_key(A_keys, A_keys + 6, B_keys, B_keys + 7, A_vals, keys_result, vals_result, thrust::greater<int>()); |
|
* |
|
* // keys_result is now {5, 3, 1} |
|
* // vals_result is now {0, 0, 0} |
|
* \endcode |
|
* |
|
* \see \p set_union_by_key |
|
* \see \p set_difference_by_key |
|
* \see \p set_symmetric_difference_by_key |
|
* \see \p sort_by_key |
|
* \see \p is_sorted |
|
*/ |
|
template<typename InputIterator1, |
|
typename InputIterator2, |
|
typename InputIterator3, |
|
typename OutputIterator1, |
|
typename OutputIterator2, |
|
typename StrictWeakCompare> |
|
thrust::pair<OutputIterator1,OutputIterator2> |
|
set_intersection_by_key(InputIterator1 keys_first1, |
|
InputIterator1 keys_last1, |
|
InputIterator2 keys_first2, |
|
InputIterator2 keys_last2, |
|
InputIterator3 values_first1, |
|
OutputIterator1 keys_result, |
|
OutputIterator2 values_result, |
|
StrictWeakCompare comp); |
|
|
|
|
|
/*! \p set_symmetric_difference_by_key performs a key-value symmetric difference operation from set theory. |
|
* \p set_difference_by_key constructs a sorted range that is the symmetric difference of the sorted |
|
* ranges <tt>[keys_first1, keys_last1)</tt> and <tt>[keys_first2, keys_last2)</tt>. Associated |
|
* with each element from the input and output key ranges is a value element. The associated input |
|
* value ranges need not be sorted. |
|
* |
|
* In the simplest case, \p set_symmetric_difference_by_key performs a set theoretic calculation: |
|
* it constructs the union of the two sets A - B and B - A, where A and B are the two |
|
* input ranges. That is, the output range contains a copy of every element that is |
|
* contained in <tt>[keys_first1, keys_last1)</tt> but not <tt>[keys_first2, keys_last1)</tt>, and a copy of |
|
* every element that is contained in <tt>[keys_first2, keys_last2)</tt> but not <tt>[keys_first1, keys_last1)</tt>. |
|
* The general case is more complicated, because the input ranges may contain duplicate elements. |
|
* The generalization is that if <tt>[keys_first1, keys_last1)</tt> contains \c m elements that are |
|
* equivalent to each other and <tt>[keys_first2, keys_last1)</tt> contains \c n elements that are |
|
* equivalent to them, then <tt>|m - n|</tt> of those elements shall be copied to the output |
|
* range: the last <tt>m - n</tt> elements from <tt>[keys_first1, keys_last1)</tt> if <tt>m > n</tt>, and |
|
* the last <tt>n - m</tt> of these elements from <tt>[keys_first2, keys_last2)</tt> if <tt>m < n</tt>. |
|
* |
|
* Each time a key element is copied from <tt>[keys_first1, keys_last1)</tt> or |
|
* <tt>[keys_first2, keys_last2)</tt> is copied to the keys output range, the |
|
* corresponding value element is copied from the corresponding values input range (beginning at |
|
* \p values_first1 or \p values_first2) to the values output range. |
|
* |
|
* This version of \p set_symmetric_difference_by_key compares key elements using \c operator<. |
|
* |
|
* The algorithm's execution is parallelized as determined by \p exec. |
|
* |
|
* \param exec The execution policy to use for parallelization. |
|
* \param keys_first1 The beginning of the first input range of keys. |
|
* \param keys_last1 The end of the first input range of keys. |
|
* \param keys_first2 The beginning of the second input range of keys. |
|
* \param keys_last2 The end of the second input range of keys. |
|
* \param values_first1 The beginning of the first input range of values. |
|
* \param values_first2 The beginning of the first input range of values. |
|
* \param keys_result The beginning of the output range of keys. |
|
* \param values_result The beginning of the output range of values. |
|
* \return A \p pair \c p such that <tt>p.first</tt> is the end of the output range of keys, |
|
* and such that <tt>p.second</tt> is the end of the output range of values. |
|
* |
|
* \tparam DerivedPolicy The name of the derived execution policy. |
|
* \tparam InputIterator1 is a model of <a href="http://www.sgi.com/tech/stl/InputIterator.html">Input Iterator</a>, |
|
* \p InputIterator1 and \p InputIterator2 have the same \c value_type, |
|
* \p InputIterator1's \c value_type is a model of <a href="http://www.sgi.com/tech/stl/LessThanComparable">LessThan Comparable</a>, |
|
* the ordering on \p InputIterator1's \c value_type is a strict weak ordering, as defined in the <a href="http://www.sgi.com/tech/stl/LessThanComparable">LessThan Comparable</a> requirements, |
|
* and \p InputIterator1's \c value_type is convertable to a type in \p OutputIterator's set of \c value_types. |
|
* \tparam InputIterator2 is a model of <a href="http://www.sgi.com/tech/stl/InputIterator.html">Input Iterator</a>, |
|
* \p InputIterator2 and \p InputIterator1 have the same \c value_type, |
|
* \p InputIterator2's \c value_type is a model of <a href="http://www.sgi.com/tech/stl/LessThanComparable">LessThan Comparable</a>, |
|
* the ordering on \p InputIterator2's \c value_type is a strict weak ordering, as defined in the <a href="http://www.sgi.com/tech/stl/LessThanComparable">LessThan Comparable</a> requirements, |
|
* and \p InputIterator2's \c value_type is convertable to a type in \p OutputIterator's set of \c value_types. |
|
* \tparam InputIterator3 is a model of <a href="http://www.sgi.com/tech/stl/InputIterator.html">Input Iterator</a>, |
|
* and \p InputIterator3's \c value_type is convertible to a type in \p OutputIterator2's set of \c value_types. |
|
* \tparam InputIterator4 is a model of <a href="http://www.sgi.com/tech/stl/InputIterator.html">Input Iterator</a>, |
|
* and \p InputIterator4's \c value_type is convertible to a type in \p OutputIterator2's set of \c value_types. |
|
* \tparam OutputIterator1 is a model of <a href="http://www.sgi.com/tech/stl/OutputIterator.html">Output Iterator</a>. |
|
* \tparam OutputIterator2 is a model of <a href="http://www.sgi.com/tech/stl/OutputIterator.html">Output Iterator</a>. |
|
* |
|
* \pre The ranges <tt>[keys_first1, keys_last1)</tt> and <tt>[keys_first2, keys_last2)</tt> shall be sorted with respect to <tt>operator<</tt>. |
|
* \pre The resulting ranges shall not overlap with any input range. |
|
* |
|
* The following code snippet demonstrates how to use \p set_symmetric_difference_by_key to compute the |
|
* symmetric difference of two sets of integers sorted in ascending order with their values using the |
|
* \p thrust::host execution policy for parallelization: |
|
* |
|
* \code |
|
* #include <thrust/set_operations.h> |
|
* #include <thrust/execution_policy.h> |
|
* ... |
|
* int A_keys[6] = {0, 1, 2, 2, 4, 6, 7}; |
|
* int A_vals[6] = {0, 0, 0, 0, 0, 0, 0}; |
|
* |
|
* int B_keys[5] = {1, 1, 2, 5, 8}; |
|
* int B_vals[5] = {1, 1, 1, 1, 1}; |
|
* |
|
* int keys_result[6]; |
|
* int vals_result[6]; |
|
* |
|
* thrust::pair<int*,int*> end = thrust::set_symmetric_difference_by_key(thrust::host, A_keys, A_keys + 6, B_keys, B_keys + 5, A_vals, B_vals, keys_result, vals_result); |
|
* // keys_result is now {0, 4, 5, 6, 7, 8} |
|
* // vals_result is now {0, 0, 1, 0, 0, 1} |
|
* \endcode |
|
* |
|
* \see \p set_union_by_key |
|
* \see \p set_intersection_by_key |
|
* \see \p set_difference_by_key |
|
* \see \p sort_by_key |
|
* \see \p is_sorted |
|
*/ |
|
template<typename DerivedPolicy, |
|
typename InputIterator1, |
|
typename InputIterator2, |
|
typename InputIterator3, |
|
typename InputIterator4, |
|
typename OutputIterator1, |
|
typename OutputIterator2> |
|
thrust::pair<OutputIterator1,OutputIterator2> |
|
set_symmetric_difference_by_key(const thrust::detail::execution_policy_base<DerivedPolicy> &exec, |
|
InputIterator1 keys_first1, |
|
InputIterator1 keys_last1, |
|
InputIterator2 keys_first2, |
|
InputIterator2 keys_last2, |
|
InputIterator3 values_first1, |
|
InputIterator4 values_first2, |
|
OutputIterator1 keys_result, |
|
OutputIterator2 values_result); |
|
|
|
|
|
/*! \p set_symmetric_difference_by_key performs a key-value symmetric difference operation from set theory. |
|
* \p set_difference_by_key constructs a sorted range that is the symmetric difference of the sorted |
|
* ranges <tt>[keys_first1, keys_last1)</tt> and <tt>[keys_first2, keys_last2)</tt>. Associated |
|
* with each element from the input and output key ranges is a value element. The associated input |
|
* value ranges need not be sorted. |
|
* |
|
* In the simplest case, \p set_symmetric_difference_by_key performs a set theoretic calculation: |
|
* it constructs the union of the two sets A - B and B - A, where A and B are the two |
|
* input ranges. That is, the output range contains a copy of every element that is |
|
* contained in <tt>[keys_first1, keys_last1)</tt> but not <tt>[keys_first2, keys_last1)</tt>, and a copy of |
|
* every element that is contained in <tt>[keys_first2, keys_last2)</tt> but not <tt>[keys_first1, keys_last1)</tt>. |
|
* The general case is more complicated, because the input ranges may contain duplicate elements. |
|
* The generalization is that if <tt>[keys_first1, keys_last1)</tt> contains \c m elements that are |
|
* equivalent to each other and <tt>[keys_first2, keys_last1)</tt> contains \c n elements that are |
|
* equivalent to them, then <tt>|m - n|</tt> of those elements shall be copied to the output |
|
* range: the last <tt>m - n</tt> elements from <tt>[keys_first1, keys_last1)</tt> if <tt>m > n</tt>, and |
|
* the last <tt>n - m</tt> of these elements from <tt>[keys_first2, keys_last2)</tt> if <tt>m < n</tt>. |
|
* |
|
* Each time a key element is copied from <tt>[keys_first1, keys_last1)</tt> or |
|
* <tt>[keys_first2, keys_last2)</tt> is copied to the keys output range, the |
|
* corresponding value element is copied from the corresponding values input range (beginning at |
|
* \p values_first1 or \p values_first2) to the values output range. |
|
* |
|
* This version of \p set_symmetric_difference_by_key compares key elements using \c operator<. |
|
* |
|
* \param keys_first1 The beginning of the first input range of keys. |
|
* \param keys_last1 The end of the first input range of keys. |
|
* \param keys_first2 The beginning of the second input range of keys. |
|
* \param keys_last2 The end of the second input range of keys. |
|
* \param values_first1 The beginning of the first input range of values. |
|
* \param values_first2 The beginning of the first input range of values. |
|
* \param keys_result The beginning of the output range of keys. |
|
* \param values_result The beginning of the output range of values. |
|
* \return A \p pair \c p such that <tt>p.first</tt> is the end of the output range of keys, |
|
* and such that <tt>p.second</tt> is the end of the output range of values. |
|
* |
|
* \tparam InputIterator1 is a model of <a href="http://www.sgi.com/tech/stl/InputIterator.html">Input Iterator</a>, |
|
* \p InputIterator1 and \p InputIterator2 have the same \c value_type, |
|
* \p InputIterator1's \c value_type is a model of <a href="http://www.sgi.com/tech/stl/LessThanComparable">LessThan Comparable</a>, |
|
* the ordering on \p InputIterator1's \c value_type is a strict weak ordering, as defined in the <a href="http://www.sgi.com/tech/stl/LessThanComparable">LessThan Comparable</a> requirements, |
|
* and \p InputIterator1's \c value_type is convertable to a type in \p OutputIterator's set of \c value_types. |
|
* \tparam InputIterator2 is a model of <a href="http://www.sgi.com/tech/stl/InputIterator.html">Input Iterator</a>, |
|
* \p InputIterator2 and \p InputIterator1 have the same \c value_type, |
|
* \p InputIterator2's \c value_type is a model of <a href="http://www.sgi.com/tech/stl/LessThanComparable">LessThan Comparable</a>, |
|
* the ordering on \p InputIterator2's \c value_type is a strict weak ordering, as defined in the <a href="http://www.sgi.com/tech/stl/LessThanComparable">LessThan Comparable</a> requirements, |
|
* and \p InputIterator2's \c value_type is convertable to a type in \p OutputIterator's set of \c value_types. |
|
* \tparam InputIterator3 is a model of <a href="http://www.sgi.com/tech/stl/InputIterator.html">Input Iterator</a>, |
|
* and \p InputIterator3's \c value_type is convertible to a type in \p OutputIterator2's set of \c value_types. |
|
* \tparam InputIterator4 is a model of <a href="http://www.sgi.com/tech/stl/InputIterator.html">Input Iterator</a>, |
|
* and \p InputIterator4's \c value_type is convertible to a type in \p OutputIterator2's set of \c value_types. |
|
* \tparam OutputIterator1 is a model of <a href="http://www.sgi.com/tech/stl/OutputIterator.html">Output Iterator</a>. |
|
* \tparam OutputIterator2 is a model of <a href="http://www.sgi.com/tech/stl/OutputIterator.html">Output Iterator</a>. |
|
* |
|
* \pre The ranges <tt>[keys_first1, keys_last1)</tt> and <tt>[keys_first2, keys_last2)</tt> shall be sorted with respect to <tt>operator<</tt>. |
|
* \pre The resulting ranges shall not overlap with any input range. |
|
* |
|
* The following code snippet demonstrates how to use \p set_symmetric_difference_by_key to compute the |
|
* symmetric difference of two sets of integers sorted in ascending order with their values. |
|
* |
|
* \code |
|
* #include <thrust/set_operations.h> |
|
* ... |
|
* int A_keys[6] = {0, 1, 2, 2, 4, 6, 7}; |
|
* int A_vals[6] = {0, 0, 0, 0, 0, 0, 0}; |
|
* |
|
* int B_keys[5] = {1, 1, 2, 5, 8}; |
|
* int B_vals[5] = {1, 1, 1, 1, 1}; |
|
* |
|
* int keys_result[6]; |
|
* int vals_result[6]; |
|
* |
|
* thrust::pair<int*,int*> end = thrust::set_symmetric_difference_by_key(A_keys, A_keys + 6, B_keys, B_keys + 5, A_vals, B_vals, keys_result, vals_result); |
|
* // keys_result is now {0, 4, 5, 6, 7, 8} |
|
* // vals_result is now {0, 0, 1, 0, 0, 1} |
|
* \endcode |
|
* |
|
* \see \p set_union_by_key |
|
* \see \p set_intersection_by_key |
|
* \see \p set_difference_by_key |
|
* \see \p sort_by_key |
|
* \see \p is_sorted |
|
*/ |
|
template<typename InputIterator1, |
|
typename InputIterator2, |
|
typename InputIterator3, |
|
typename InputIterator4, |
|
typename OutputIterator1, |
|
typename OutputIterator2> |
|
thrust::pair<OutputIterator1,OutputIterator2> |
|
set_symmetric_difference_by_key(InputIterator1 keys_first1, |
|
InputIterator1 keys_last1, |
|
InputIterator2 keys_first2, |
|
InputIterator2 keys_last2, |
|
InputIterator3 values_first1, |
|
InputIterator4 values_first2, |
|
OutputIterator1 keys_result, |
|
OutputIterator2 values_result); |
|
|
|
|
|
/*! \p set_symmetric_difference_by_key performs a key-value symmetric difference operation from set theory. |
|
* \p set_difference_by_key constructs a sorted range that is the symmetric difference of the sorted |
|
* ranges <tt>[keys_first1, keys_last1)</tt> and <tt>[keys_first2, keys_last2)</tt>. Associated |
|
* with each element from the input and output key ranges is a value element. The associated input |
|
* value ranges need not be sorted. |
|
* |
|
* In the simplest case, \p set_symmetric_difference_by_key performs a set theoretic calculation: |
|
* it constructs the union of the two sets A - B and B - A, where A and B are the two |
|
* input ranges. That is, the output range contains a copy of every element that is |
|
* contained in <tt>[keys_first1, keys_last1)</tt> but not <tt>[keys_first2, keys_last1)</tt>, and a copy of |
|
* every element that is contained in <tt>[keys_first2, keys_last2)</tt> but not <tt>[keys_first1, keys_last1)</tt>. |
|
* The general case is more complicated, because the input ranges may contain duplicate elements. |
|
* The generalization is that if <tt>[keys_first1, keys_last1)</tt> contains \c m elements that are |
|
* equivalent to each other and <tt>[keys_first2, keys_last1)</tt> contains \c n elements that are |
|
* equivalent to them, then <tt>|m - n|</tt> of those elements shall be copied to the output |
|
* range: the last <tt>m - n</tt> elements from <tt>[keys_first1, keys_last1)</tt> if <tt>m > n</tt>, and |
|
* the last <tt>n - m</tt> of these elements from <tt>[keys_first2, keys_last2)</tt> if <tt>m < n</tt>. |
|
* |
|
* Each time a key element is copied from <tt>[keys_first1, keys_last1)</tt> or |
|
* <tt>[keys_first2, keys_last2)</tt> is copied to the keys output range, the |
|
* corresponding value element is copied from the corresponding values input range (beginning at |
|
* \p values_first1 or \p values_first2) to the values output range. |
|
* |
|
* This version of \p set_symmetric_difference_by_key compares key elements using a function object \c comp. |
|
* |
|
* The algorithm's execution is parallelized as determined by \p exec. |
|
* |
|
* \param exec The execution policy to use for parallelization. |
|
* \param keys_first1 The beginning of the first input range of keys. |
|
* \param keys_last1 The end of the first input range of keys. |
|
* \param keys_first2 The beginning of the second input range of keys. |
|
* \param keys_last2 The end of the second input range of keys. |
|
* \param values_first1 The beginning of the first input range of values. |
|
* \param values_first2 The beginning of the first input range of values. |
|
* \param keys_result The beginning of the output range of keys. |
|
* \param values_result The beginning of the output range of values. |
|
* \param comp Comparison operator. |
|
* \return A \p pair \c p such that <tt>p.first</tt> is the end of the output range of keys, |
|
* and such that <tt>p.second</tt> is the end of the output range of values. |
|
* |
|
* \tparam DerivedPolicy The name of the derived execution policy. |
|
* \tparam InputIterator1 is a model of <a href="http://www.sgi.com/tech/stl/InputIterator.html">Input Iterator</a>, |
|
* \p InputIterator1 and \p InputIterator2 have the same \c value_type, |
|
* \p InputIterator1's \c value_type is a model of <a href="http://www.sgi.com/tech/stl/LessThanComparable">LessThan Comparable</a>, |
|
* the ordering on \p InputIterator1's \c value_type is a strict weak ordering, as defined in the <a href="http://www.sgi.com/tech/stl/LessThanComparable">LessThan Comparable</a> requirements, |
|
* and \p InputIterator1's \c value_type is convertable to a type in \p OutputIterator's set of \c value_types. |
|
* \tparam InputIterator2 is a model of <a href="http://www.sgi.com/tech/stl/InputIterator.html">Input Iterator</a>, |
|
* \p InputIterator2 and \p InputIterator1 have the same \c value_type, |
|
* \p InputIterator2's \c value_type is a model of <a href="http://www.sgi.com/tech/stl/LessThanComparable">LessThan Comparable</a>, |
|
* the ordering on \p InputIterator2's \c value_type is a strict weak ordering, as defined in the <a href="http://www.sgi.com/tech/stl/LessThanComparable">LessThan Comparable</a> requirements, |
|
* and \p InputIterator2's \c value_type is convertable to a type in \p OutputIterator's set of \c value_types. |
|
* \tparam InputIterator3 is a model of <a href="http://www.sgi.com/tech/stl/InputIterator.html">Input Iterator</a>, |
|
* and \p InputIterator3's \c value_type is convertible to a type in \p OutputIterator2's set of \c value_types. |
|
* \tparam InputIterator4 is a model of <a href="http://www.sgi.com/tech/stl/InputIterator.html">Input Iterator</a>, |
|
* and \p InputIterator4's \c value_type is convertible to a type in \p OutputIterator2's set of \c value_types. |
|
* \tparam OutputIterator1 is a model of <a href="http://www.sgi.com/tech/stl/OutputIterator.html">Output Iterator</a>. |
|
* \tparam OutputIterator2 is a model of <a href="http://www.sgi.com/tech/stl/OutputIterator.html">Output Iterator</a>. |
|
* \tparam StrictWeakCompare is a model of <a href="http://www.sgi.com/tech/stl/StrictWeakOrdering.html">Strict Weak Ordering</a>. |
|
* |
|
* \pre The ranges <tt>[keys_first1, keys_last1)</tt> and <tt>[keys_first2, keys_last2)</tt> shall be sorted with respect to \p comp. |
|
* \pre The resulting ranges shall not overlap with any input range. |
|
* |
|
* The following code snippet demonstrates how to use \p set_symmetric_difference_by_key to compute the |
|
* symmetric difference of two sets of integers sorted in descending order with their values using the |
|
* \p thrust::host execution policy for parallelization: |
|
* |
|
* \code |
|
* #include <thrust/set_operations.h> |
|
* #include <thrust/functional.h> |
|
* #include <thrust/execution_policy.h> |
|
* ... |
|
* int A_keys[6] = {7, 6, 4, 2, 2, 1, 0}; |
|
* int A_vals[6] = {0, 0, 0, 0, 0, 0, 0}; |
|
* |
|
* int B_keys[5] = {8, 5, 2, 1, 1}; |
|
* int B_vals[5] = {1, 1, 1, 1, 1}; |
|
* |
|
* int keys_result[6]; |
|
* int vals_result[6]; |
|
* |
|
* thrust::pair<int*,int*> end = thrust::set_symmetric_difference_by_key(thrust::host, A_keys, A_keys + 6, B_keys, B_keys + 5, A_vals, B_vals, keys_result, vals_result); |
|
* // keys_result is now {8, 7, 6, 5, 4, 0} |
|
* // vals_result is now {1, 0, 0, 1, 0, 0} |
|
* \endcode |
|
* |
|
* \see \p set_union_by_key |
|
* \see \p set_intersection_by_key |
|
* \see \p set_difference_by_key |
|
* \see \p sort_by_key |
|
* \see \p is_sorted |
|
*/ |
|
template<typename DerivedPolicy, |
|
typename InputIterator1, |
|
typename InputIterator2, |
|
typename InputIterator3, |
|
typename InputIterator4, |
|
typename OutputIterator1, |
|
typename OutputIterator2, |
|
typename StrictWeakCompare> |
|
thrust::pair<OutputIterator1,OutputIterator2> |
|
set_symmetric_difference_by_key(const thrust::detail::execution_policy_base<DerivedPolicy> &exec, |
|
InputIterator1 keys_first1, |
|
InputIterator1 keys_last1, |
|
InputIterator2 keys_first2, |
|
InputIterator2 keys_last2, |
|
InputIterator3 values_first1, |
|
InputIterator4 values_first2, |
|
OutputIterator1 keys_result, |
|
OutputIterator2 values_result, |
|
StrictWeakCompare comp); |
|
|
|
|
|
/*! \p set_symmetric_difference_by_key performs a key-value symmetric difference operation from set theory. |
|
* \p set_difference_by_key constructs a sorted range that is the symmetric difference of the sorted |
|
* ranges <tt>[keys_first1, keys_last1)</tt> and <tt>[keys_first2, keys_last2)</tt>. Associated |
|
* with each element from the input and output key ranges is a value element. The associated input |
|
* value ranges need not be sorted. |
|
* |
|
* In the simplest case, \p set_symmetric_difference_by_key performs a set theoretic calculation: |
|
* it constructs the union of the two sets A - B and B - A, where A and B are the two |
|
* input ranges. That is, the output range contains a copy of every element that is |
|
* contained in <tt>[keys_first1, keys_last1)</tt> but not <tt>[keys_first2, keys_last1)</tt>, and a copy of |
|
* every element that is contained in <tt>[keys_first2, keys_last2)</tt> but not <tt>[keys_first1, keys_last1)</tt>. |
|
* The general case is more complicated, because the input ranges may contain duplicate elements. |
|
* The generalization is that if <tt>[keys_first1, keys_last1)</tt> contains \c m elements that are |
|
* equivalent to each other and <tt>[keys_first2, keys_last1)</tt> contains \c n elements that are |
|
* equivalent to them, then <tt>|m - n|</tt> of those elements shall be copied to the output |
|
* range: the last <tt>m - n</tt> elements from <tt>[keys_first1, keys_last1)</tt> if <tt>m > n</tt>, and |
|
* the last <tt>n - m</tt> of these elements from <tt>[keys_first2, keys_last2)</tt> if <tt>m < n</tt>. |
|
* |
|
* Each time a key element is copied from <tt>[keys_first1, keys_last1)</tt> or |
|
* <tt>[keys_first2, keys_last2)</tt> is copied to the keys output range, the |
|
* corresponding value element is copied from the corresponding values input range (beginning at |
|
* \p values_first1 or \p values_first2) to the values output range. |
|
* |
|
* This version of \p set_symmetric_difference_by_key compares key elements using a function object \c comp. |
|
* |
|
* \param keys_first1 The beginning of the first input range of keys. |
|
* \param keys_last1 The end of the first input range of keys. |
|
* \param keys_first2 The beginning of the second input range of keys. |
|
* \param keys_last2 The end of the second input range of keys. |
|
* \param values_first1 The beginning of the first input range of values. |
|
* \param values_first2 The beginning of the first input range of values. |
|
* \param keys_result The beginning of the output range of keys. |
|
* \param values_result The beginning of the output range of values. |
|
* \param comp Comparison operator. |
|
* \return A \p pair \c p such that <tt>p.first</tt> is the end of the output range of keys, |
|
* and such that <tt>p.second</tt> is the end of the output range of values. |
|
* |
|
* \tparam InputIterator1 is a model of <a href="http://www.sgi.com/tech/stl/InputIterator.html">Input Iterator</a>, |
|
* \p InputIterator1 and \p InputIterator2 have the same \c value_type, |
|
* \p InputIterator1's \c value_type is a model of <a href="http://www.sgi.com/tech/stl/LessThanComparable">LessThan Comparable</a>, |
|
* the ordering on \p InputIterator1's \c value_type is a strict weak ordering, as defined in the <a href="http://www.sgi.com/tech/stl/LessThanComparable">LessThan Comparable</a> requirements, |
|
* and \p InputIterator1's \c value_type is convertable to a type in \p OutputIterator's set of \c value_types. |
|
* \tparam InputIterator2 is a model of <a href="http://www.sgi.com/tech/stl/InputIterator.html">Input Iterator</a>, |
|
* \p InputIterator2 and \p InputIterator1 have the same \c value_type, |
|
* \p InputIterator2's \c value_type is a model of <a href="http://www.sgi.com/tech/stl/LessThanComparable">LessThan Comparable</a>, |
|
* the ordering on \p InputIterator2's \c value_type is a strict weak ordering, as defined in the <a href="http://www.sgi.com/tech/stl/LessThanComparable">LessThan Comparable</a> requirements, |
|
* and \p InputIterator2's \c value_type is convertable to a type in \p OutputIterator's set of \c value_types. |
|
* \tparam InputIterator3 is a model of <a href="http://www.sgi.com/tech/stl/InputIterator.html">Input Iterator</a>, |
|
* and \p InputIterator3's \c value_type is convertible to a type in \p OutputIterator2's set of \c value_types. |
|
* \tparam InputIterator4 is a model of <a href="http://www.sgi.com/tech/stl/InputIterator.html">Input Iterator</a>, |
|
* and \p InputIterator4's \c value_type is convertible to a type in \p OutputIterator2's set of \c value_types. |
|
* \tparam OutputIterator1 is a model of <a href="http://www.sgi.com/tech/stl/OutputIterator.html">Output Iterator</a>. |
|
* \tparam OutputIterator2 is a model of <a href="http://www.sgi.com/tech/stl/OutputIterator.html">Output Iterator</a>. |
|
* \tparam StrictWeakCompare is a model of <a href="http://www.sgi.com/tech/stl/StrictWeakOrdering.html">Strict Weak Ordering</a>. |
|
* |
|
* \pre The ranges <tt>[keys_first1, keys_last1)</tt> and <tt>[keys_first2, keys_last2)</tt> shall be sorted with respect to \p comp. |
|
* \pre The resulting ranges shall not overlap with any input range. |
|
* |
|
* The following code snippet demonstrates how to use \p set_symmetric_difference_by_key to compute the |
|
* symmetric difference of two sets of integers sorted in descending order with their values. |
|
* |
|
* \code |
|
* #include <thrust/set_operations.h> |
|
* #include <thrust/functional.h> |
|
* ... |
|
* int A_keys[6] = {7, 6, 4, 2, 2, 1, 0}; |
|
* int A_vals[6] = {0, 0, 0, 0, 0, 0, 0}; |
|
* |
|
* int B_keys[5] = {8, 5, 2, 1, 1}; |
|
* int B_vals[5] = {1, 1, 1, 1, 1}; |
|
* |
|
* int keys_result[6]; |
|
* int vals_result[6]; |
|
* |
|
* thrust::pair<int*,int*> end = thrust::set_symmetric_difference_by_key(A_keys, A_keys + 6, B_keys, B_keys + 5, A_vals, B_vals, keys_result, vals_result); |
|
* // keys_result is now {8, 7, 6, 5, 4, 0} |
|
* // vals_result is now {1, 0, 0, 1, 0, 0} |
|
* \endcode |
|
* |
|
* \see \p set_union_by_key |
|
* \see \p set_intersection_by_key |
|
* \see \p set_difference_by_key |
|
* \see \p sort_by_key |
|
* \see \p is_sorted |
|
*/ |
|
template<typename InputIterator1, |
|
typename InputIterator2, |
|
typename InputIterator3, |
|
typename InputIterator4, |
|
typename OutputIterator1, |
|
typename OutputIterator2, |
|
typename StrictWeakCompare> |
|
thrust::pair<OutputIterator1,OutputIterator2> |
|
set_symmetric_difference_by_key(InputIterator1 keys_first1, |
|
InputIterator1 keys_last1, |
|
InputIterator2 keys_first2, |
|
InputIterator2 keys_last2, |
|
InputIterator3 values_first1, |
|
InputIterator4 values_first2, |
|
OutputIterator1 keys_result, |
|
OutputIterator2 values_result, |
|
StrictWeakCompare comp); |
|
|
|
|
|
/*! \p set_union_by_key performs a key-value union operation from set theory. |
|
* \p set_union_by_key constructs a sorted range that is the union of the sorted |
|
* ranges <tt>[keys_first1, keys_last1)</tt> and <tt>[keys_first2, keys_last2)</tt>. Associated |
|
* with each element from the input and output key ranges is a value element. The associated input |
|
* value ranges need not be sorted. |
|
* |
|
* In the simplest case, \p set_union_by_key performs the "union" operation from set theory: |
|
* the output range contains a copy of every element that is contained in |
|
* <tt>[keys_first1, keys_last1)</tt>, <tt>[keys_first2, keys_last1)</tt>, or both. The general case |
|
* is more complicated, because the input ranges may contain duplicate elements. |
|
* The generalization is that if <tt>[keys_first1, keys_last1)</tt> contains \c m elements |
|
* that are equivalent to each other and if <tt>[keys_first2, keys_last2)</tt> contains \c n |
|
* elements that are equivalent to them, then all \c m elements from the first |
|
* range shall be copied to the output range, in order, and then <tt>max(n - m, 0)</tt> |
|
* elements from the second range shall be copied to the output, in order. |
|
* |
|
* Each time a key element is copied from <tt>[keys_first1, keys_last1)</tt> or |
|
* <tt>[keys_first2, keys_last2)</tt> is copied to the keys output range, the |
|
* corresponding value element is copied from the corresponding values input range (beginning at |
|
* \p values_first1 or \p values_first2) to the values output range. |
|
* |
|
* This version of \p set_union_by_key compares key elements using \c operator<. |
|
* |
|
* The algorithm's execution is parallelized as determined by \p exec. |
|
* |
|
* \param exec The execution policy to use for parallelization. |
|
* \param keys_first1 The beginning of the first input range of keys. |
|
* \param keys_last1 The end of the first input range of keys. |
|
* \param keys_first2 The beginning of the second input range of keys. |
|
* \param keys_last2 The end of the second input range of keys. |
|
* \param values_first1 The beginning of the first input range of values. |
|
* \param values_first2 The beginning of the first input range of values. |
|
* \param keys_result The beginning of the output range of keys. |
|
* \param values_result The beginning of the output range of values. |
|
* \return A \p pair \c p such that <tt>p.first</tt> is the end of the output range of keys, |
|
* and such that <tt>p.second</tt> is the end of the output range of values. |
|
* |
|
* \tparam DerivedPolicy The name of the derived execution policy. |
|
* \tparam InputIterator1 is a model of <a href="http://www.sgi.com/tech/stl/InputIterator.html">Input Iterator</a>, |
|
* \p InputIterator1 and \p InputIterator2 have the same \c value_type, |
|
* \p InputIterator1's \c value_type is a model of <a href="http://www.sgi.com/tech/stl/LessThanComparable">LessThan Comparable</a>, |
|
* the ordering on \p InputIterator1's \c value_type is a strict weak ordering, as defined in the <a href="http://www.sgi.com/tech/stl/LessThanComparable">LessThan Comparable</a> requirements, |
|
* and \p InputIterator1's \c value_type is convertable to a type in \p OutputIterator's set of \c value_types. |
|
* \tparam InputIterator2 is a model of <a href="http://www.sgi.com/tech/stl/InputIterator.html">Input Iterator</a>, |
|
* \p InputIterator2 and \p InputIterator1 have the same \c value_type, |
|
* \p InputIterator2's \c value_type is a model of <a href="http://www.sgi.com/tech/stl/LessThanComparable">LessThan Comparable</a>, |
|
* the ordering on \p InputIterator2's \c value_type is a strict weak ordering, as defined in the <a href="http://www.sgi.com/tech/stl/LessThanComparable">LessThan Comparable</a> requirements, |
|
* and \p InputIterator2's \c value_type is convertable to a type in \p OutputIterator's set of \c value_types. |
|
* \tparam InputIterator3 is a model of <a href="http://www.sgi.com/tech/stl/InputIterator.html">Input Iterator</a>, |
|
* and \p InputIterator3's \c value_type is convertible to a type in \p OutputIterator2's set of \c value_types. |
|
* \tparam InputIterator4 is a model of <a href="http://www.sgi.com/tech/stl/InputIterator.html">Input Iterator</a>, |
|
* and \p InputIterator4's \c value_type is convertible to a type in \p OutputIterator2's set of \c value_types. |
|
* \tparam OutputIterator1 is a model of <a href="http://www.sgi.com/tech/stl/OutputIterator.html">Output Iterator</a>. |
|
* \tparam OutputIterator2 is a model of <a href="http://www.sgi.com/tech/stl/OutputIterator.html">Output Iterator</a>. |
|
* |
|
* \pre The ranges <tt>[keys_first1, keys_last1)</tt> and <tt>[keys_first2, keys_last2)</tt> shall be sorted with respect to <tt>operator<</tt>. |
|
* \pre The resulting ranges shall not overlap with any input range. |
|
* |
|
* The following code snippet demonstrates how to use \p set_symmetric_difference_by_key to compute the |
|
* symmetric difference of two sets of integers sorted in ascending order with their values using the |
|
* \p thrust::host execution policy for parallelization: |
|
* |
|
* \code |
|
* #include <thrust/set_operations.h> |
|
* #include <thrust/execution_policy.h> |
|
* ... |
|
* int A_keys[6] = {0, 2, 4, 6, 8, 10, 12}; |
|
* int A_vals[6] = {0, 0, 0, 0, 0, 0, 0}; |
|
* |
|
* int B_keys[5] = {1, 3, 5, 7, 9}; |
|
* int B_vals[5] = {1, 1, 1, 1, 1}; |
|
* |
|
* int keys_result[11]; |
|
* int vals_result[11]; |
|
* |
|
* thrust::pair<int*,int*> end = thrust::set_symmetric_difference_by_key(thrust::host, A_keys, A_keys + 6, B_keys, B_keys + 5, A_vals, B_vals, keys_result, vals_result); |
|
* // keys_result is now {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12} |
|
* // vals_result is now {0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 0} |
|
* \endcode |
|
* |
|
* \see \p set_symmetric_difference_by_key |
|
* \see \p set_intersection_by_key |
|
* \see \p set_difference_by_key |
|
* \see \p sort_by_key |
|
* \see \p is_sorted |
|
*/ |
|
template<typename DerivedPolicy, |
|
typename InputIterator1, |
|
typename InputIterator2, |
|
typename InputIterator3, |
|
typename InputIterator4, |
|
typename OutputIterator1, |
|
typename OutputIterator2> |
|
thrust::pair<OutputIterator1,OutputIterator2> |
|
set_union_by_key(const thrust::detail::execution_policy_base<DerivedPolicy> &exec, |
|
InputIterator1 keys_first1, |
|
InputIterator1 keys_last1, |
|
InputIterator2 keys_first2, |
|
InputIterator2 keys_last2, |
|
InputIterator3 values_first1, |
|
InputIterator4 values_first2, |
|
OutputIterator1 keys_result, |
|
OutputIterator2 values_result); |
|
|
|
|
|
/*! \p set_union_by_key performs a key-value union operation from set theory. |
|
* \p set_union_by_key constructs a sorted range that is the union of the sorted |
|
* ranges <tt>[keys_first1, keys_last1)</tt> and <tt>[keys_first2, keys_last2)</tt>. Associated |
|
* with each element from the input and output key ranges is a value element. The associated input |
|
* value ranges need not be sorted. |
|
* |
|
* In the simplest case, \p set_union_by_key performs the "union" operation from set theory: |
|
* the output range contains a copy of every element that is contained in |
|
* <tt>[keys_first1, keys_last1)</tt>, <tt>[keys_first2, keys_last1)</tt>, or both. The general case |
|
* is more complicated, because the input ranges may contain duplicate elements. |
|
* The generalization is that if <tt>[keys_first1, keys_last1)</tt> contains \c m elements |
|
* that are equivalent to each other and if <tt>[keys_first2, keys_last2)</tt> contains \c n |
|
* elements that are equivalent to them, then all \c m elements from the first |
|
* range shall be copied to the output range, in order, and then <tt>max(n - m, 0)</tt> |
|
* elements from the second range shall be copied to the output, in order. |
|
* |
|
* Each time a key element is copied from <tt>[keys_first1, keys_last1)</tt> or |
|
* <tt>[keys_first2, keys_last2)</tt> is copied to the keys output range, the |
|
* corresponding value element is copied from the corresponding values input range (beginning at |
|
* \p values_first1 or \p values_first2) to the values output range. |
|
* |
|
* This version of \p set_union_by_key compares key elements using \c operator<. |
|
* |
|
* \param keys_first1 The beginning of the first input range of keys. |
|
* \param keys_last1 The end of the first input range of keys. |
|
* \param keys_first2 The beginning of the second input range of keys. |
|
* \param keys_last2 The end of the second input range of keys. |
|
* \param values_first1 The beginning of the first input range of values. |
|
* \param values_first2 The beginning of the first input range of values. |
|
* \param keys_result The beginning of the output range of keys. |
|
* \param values_result The beginning of the output range of values. |
|
* \return A \p pair \c p such that <tt>p.first</tt> is the end of the output range of keys, |
|
* and such that <tt>p.second</tt> is the end of the output range of values. |
|
* |
|
* \tparam InputIterator1 is a model of <a href="http://www.sgi.com/tech/stl/InputIterator.html">Input Iterator</a>, |
|
* \p InputIterator1 and \p InputIterator2 have the same \c value_type, |
|
* \p InputIterator1's \c value_type is a model of <a href="http://www.sgi.com/tech/stl/LessThanComparable">LessThan Comparable</a>, |
|
* the ordering on \p InputIterator1's \c value_type is a strict weak ordering, as defined in the <a href="http://www.sgi.com/tech/stl/LessThanComparable">LessThan Comparable</a> requirements, |
|
* and \p InputIterator1's \c value_type is convertable to a type in \p OutputIterator's set of \c value_types. |
|
* \tparam InputIterator2 is a model of <a href="http://www.sgi.com/tech/stl/InputIterator.html">Input Iterator</a>, |
|
* \p InputIterator2 and \p InputIterator1 have the same \c value_type, |
|
* \p InputIterator2's \c value_type is a model of <a href="http://www.sgi.com/tech/stl/LessThanComparable">LessThan Comparable</a>, |
|
* the ordering on \p InputIterator2's \c value_type is a strict weak ordering, as defined in the <a href="http://www.sgi.com/tech/stl/LessThanComparable">LessThan Comparable</a> requirements, |
|
* and \p InputIterator2's \c value_type is convertable to a type in \p OutputIterator's set of \c value_types. |
|
* \tparam InputIterator3 is a model of <a href="http://www.sgi.com/tech/stl/InputIterator.html">Input Iterator</a>, |
|
* and \p InputIterator3's \c value_type is convertible to a type in \p OutputIterator2's set of \c value_types. |
|
* \tparam InputIterator4 is a model of <a href="http://www.sgi.com/tech/stl/InputIterator.html">Input Iterator</a>, |
|
* and \p InputIterator4's \c value_type is convertible to a type in \p OutputIterator2's set of \c value_types. |
|
* \tparam OutputIterator1 is a model of <a href="http://www.sgi.com/tech/stl/OutputIterator.html">Output Iterator</a>. |
|
* \tparam OutputIterator2 is a model of <a href="http://www.sgi.com/tech/stl/OutputIterator.html">Output Iterator</a>. |
|
* |
|
* \pre The ranges <tt>[keys_first1, keys_last1)</tt> and <tt>[keys_first2, keys_last2)</tt> shall be sorted with respect to <tt>operator<</tt>. |
|
* \pre The resulting ranges shall not overlap with any input range. |
|
* |
|
* The following code snippet demonstrates how to use \p set_symmetric_difference_by_key to compute the |
|
* symmetric difference of two sets of integers sorted in ascending order with their values. |
|
* |
|
* \code |
|
* #include <thrust/set_operations.h> |
|
* ... |
|
* int A_keys[6] = {0, 2, 4, 6, 8, 10, 12}; |
|
* int A_vals[6] = {0, 0, 0, 0, 0, 0, 0}; |
|
* |
|
* int B_keys[5] = {1, 3, 5, 7, 9}; |
|
* int B_vals[5] = {1, 1, 1, 1, 1}; |
|
* |
|
* int keys_result[11]; |
|
* int vals_result[11]; |
|
* |
|
* thrust::pair<int*,int*> end = thrust::set_symmetric_difference_by_key(A_keys, A_keys + 6, B_keys, B_keys + 5, A_vals, B_vals, keys_result, vals_result); |
|
* // keys_result is now {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12} |
|
* // vals_result is now {0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 0} |
|
* \endcode |
|
* |
|
* \see \p set_symmetric_difference_by_key |
|
* \see \p set_intersection_by_key |
|
* \see \p set_difference_by_key |
|
* \see \p sort_by_key |
|
* \see \p is_sorted |
|
*/ |
|
template<typename InputIterator1, |
|
typename InputIterator2, |
|
typename InputIterator3, |
|
typename InputIterator4, |
|
typename OutputIterator1, |
|
typename OutputIterator2> |
|
thrust::pair<OutputIterator1,OutputIterator2> |
|
set_union_by_key(InputIterator1 keys_first1, |
|
InputIterator1 keys_last1, |
|
InputIterator2 keys_first2, |
|
InputIterator2 keys_last2, |
|
InputIterator3 values_first1, |
|
InputIterator4 values_first2, |
|
OutputIterator1 keys_result, |
|
OutputIterator2 values_result); |
|
|
|
|
|
/*! \p set_union_by_key performs a key-value union operation from set theory. |
|
* \p set_union_by_key constructs a sorted range that is the union of the sorted |
|
* ranges <tt>[keys_first1, keys_last1)</tt> and <tt>[keys_first2, keys_last2)</tt>. Associated |
|
* with each element from the input and output key ranges is a value element. The associated input |
|
* value ranges need not be sorted. |
|
* |
|
* In the simplest case, \p set_union_by_key performs the "union" operation from set theory: |
|
* the output range contains a copy of every element that is contained in |
|
* <tt>[keys_first1, keys_last1)</tt>, <tt>[keys_first2, keys_last1)</tt>, or both. The general case |
|
* is more complicated, because the input ranges may contain duplicate elements. |
|
* The generalization is that if <tt>[keys_first1, keys_last1)</tt> contains \c m elements |
|
* that are equivalent to each other and if <tt>[keys_first2, keys_last2)</tt> contains \c n |
|
* elements that are equivalent to them, then all \c m elements from the first |
|
* range shall be copied to the output range, in order, and then <tt>max(n - m, 0)</tt> |
|
* elements from the second range shall be copied to the output, in order. |
|
* |
|
* Each time a key element is copied from <tt>[keys_first1, keys_last1)</tt> or |
|
* <tt>[keys_first2, keys_last2)</tt> is copied to the keys output range, the |
|
* corresponding value element is copied from the corresponding values input range (beginning at |
|
* \p values_first1 or \p values_first2) to the values output range. |
|
* |
|
* This version of \p set_union_by_key compares key elements using a function object \c comp. |
|
* |
|
* The algorithm's execution is parallelized as determined by \p exec. |
|
* |
|
* \param exec The execution policy to use for parallelization. |
|
* \param keys_first1 The beginning of the first input range of keys. |
|
* \param keys_last1 The end of the first input range of keys. |
|
* \param keys_first2 The beginning of the second input range of keys. |
|
* \param keys_last2 The end of the second input range of keys. |
|
* \param values_first1 The beginning of the first input range of values. |
|
* \param values_first2 The beginning of the first input range of values. |
|
* \param keys_result The beginning of the output range of keys. |
|
* \param values_result The beginning of the output range of values. |
|
* \param comp Comparison operator. |
|
* \return A \p pair \c p such that <tt>p.first</tt> is the end of the output range of keys, |
|
* and such that <tt>p.second</tt> is the end of the output range of values. |
|
* |
|
* \tparam DerivedPolicy The name of the derived execution policy. |
|
* \tparam InputIterator1 is a model of <a href="http://www.sgi.com/tech/stl/InputIterator.html">Input Iterator</a>, |
|
* \p InputIterator1 and \p InputIterator2 have the same \c value_type, |
|
* \p InputIterator1's \c value_type is a model of <a href="http://www.sgi.com/tech/stl/LessThanComparable">LessThan Comparable</a>, |
|
* the ordering on \p InputIterator1's \c value_type is a strict weak ordering, as defined in the <a href="http://www.sgi.com/tech/stl/LessThanComparable">LessThan Comparable</a> requirements, |
|
* and \p InputIterator1's \c value_type is convertable to a type in \p OutputIterator's set of \c value_types. |
|
* \tparam InputIterator2 is a model of <a href="http://www.sgi.com/tech/stl/InputIterator.html">Input Iterator</a>, |
|
* \p InputIterator2 and \p InputIterator1 have the same \c value_type, |
|
* \p InputIterator2's \c value_type is a model of <a href="http://www.sgi.com/tech/stl/LessThanComparable">LessThan Comparable</a>, |
|
* the ordering on \p InputIterator2's \c value_type is a strict weak ordering, as defined in the <a href="http://www.sgi.com/tech/stl/LessThanComparable">LessThan Comparable</a> requirements, |
|
* and \p InputIterator2's \c value_type is convertable to a type in \p OutputIterator's set of \c value_types. |
|
* \tparam InputIterator3 is a model of <a href="http://www.sgi.com/tech/stl/InputIterator.html">Input Iterator</a>, |
|
* and \p InputIterator3's \c value_type is convertible to a type in \p OutputIterator2's set of \c value_types. |
|
* \tparam InputIterator4 is a model of <a href="http://www.sgi.com/tech/stl/InputIterator.html">Input Iterator</a>, |
|
* and \p InputIterator4's \c value_type is convertible to a type in \p OutputIterator2's set of \c value_types. |
|
* \tparam OutputIterator1 is a model of <a href="http://www.sgi.com/tech/stl/OutputIterator.html">Output Iterator</a>. |
|
* \tparam OutputIterator2 is a model of <a href="http://www.sgi.com/tech/stl/OutputIterator.html">Output Iterator</a>. |
|
* \tparam StrictWeakCompare is a model of <a href="http://www.sgi.com/tech/stl/StrictWeakOrdering.html">Strict Weak Ordering</a>. |
|
* |
|
* \pre The ranges <tt>[keys_first1, keys_last1)</tt> and <tt>[keys_first2, keys_last2)</tt> shall be sorted with respect to \p comp. |
|
* \pre The resulting ranges shall not overlap with any input range. |
|
* |
|
* The following code snippet demonstrates how to use \p set_symmetric_difference_by_key to compute the |
|
* symmetric difference of two sets of integers sorted in descending order with their values using the |
|
* \p thrust::host execution policy for parallelization: |
|
* |
|
* \code |
|
* #include <thrust/set_operations.h> |
|
* #include <thrust/functional.h> |
|
* #include <thrust/execution_policy.h> |
|
* ... |
|
* int A_keys[6] = {12, 10, 8, 6, 4, 2, 0}; |
|
* int A_vals[6] = { 0, 0, 0, 0, 0, 0, 0}; |
|
* |
|
* int B_keys[5] = {9, 7, 5, 3, 1}; |
|
* int B_vals[5] = {1, 1, 1, 1, 1}; |
|
* |
|
* int keys_result[11]; |
|
* int vals_result[11]; |
|
* |
|
* thrust::pair<int*,int*> end = thrust::set_symmetric_difference_by_key(thrust::host, A_keys, A_keys + 6, B_keys, B_keys + 5, A_vals, B_vals, keys_result, vals_result, thrust::greater<int>()); |
|
* // keys_result is now {12, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0} |
|
* // vals_result is now { 0, 1, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0} |
|
* \endcode |
|
* |
|
* \see \p set_symmetric_difference_by_key |
|
* \see \p set_intersection_by_key |
|
* \see \p set_difference_by_key |
|
* \see \p sort_by_key |
|
* \see \p is_sorted |
|
*/ |
|
template<typename DerivedPolicy, |
|
typename InputIterator1, |
|
typename InputIterator2, |
|
typename InputIterator3, |
|
typename InputIterator4, |
|
typename OutputIterator1, |
|
typename OutputIterator2, |
|
typename StrictWeakCompare> |
|
thrust::pair<OutputIterator1,OutputIterator2> |
|
set_union_by_key(const thrust::detail::execution_policy_base<DerivedPolicy> &exec, |
|
InputIterator1 keys_first1, |
|
InputIterator1 keys_last1, |
|
InputIterator2 keys_first2, |
|
InputIterator2 keys_last2, |
|
InputIterator3 values_first1, |
|
InputIterator4 values_first2, |
|
OutputIterator1 keys_result, |
|
OutputIterator2 values_result, |
|
StrictWeakCompare comp); |
|
|
|
|
|
/*! \p set_union_by_key performs a key-value union operation from set theory. |
|
* \p set_union_by_key constructs a sorted range that is the union of the sorted |
|
* ranges <tt>[keys_first1, keys_last1)</tt> and <tt>[keys_first2, keys_last2)</tt>. Associated |
|
* with each element from the input and output key ranges is a value element. The associated input |
|
* value ranges need not be sorted. |
|
* |
|
* In the simplest case, \p set_union_by_key performs the "union" operation from set theory: |
|
* the output range contains a copy of every element that is contained in |
|
* <tt>[keys_first1, keys_last1)</tt>, <tt>[keys_first2, keys_last1)</tt>, or both. The general case |
|
* is more complicated, because the input ranges may contain duplicate elements. |
|
* The generalization is that if <tt>[keys_first1, keys_last1)</tt> contains \c m elements |
|
* that are equivalent to each other and if <tt>[keys_first2, keys_last2)</tt> contains \c n |
|
* elements that are equivalent to them, then all \c m elements from the first |
|
* range shall be copied to the output range, in order, and then <tt>max(n - m, 0)</tt> |
|
* elements from the second range shall be copied to the output, in order. |
|
* |
|
* Each time a key element is copied from <tt>[keys_first1, keys_last1)</tt> or |
|
* <tt>[keys_first2, keys_last2)</tt> is copied to the keys output range, the |
|
* corresponding value element is copied from the corresponding values input range (beginning at |
|
* \p values_first1 or \p values_first2) to the values output range. |
|
* |
|
* This version of \p set_union_by_key compares key elements using a function object \c comp. |
|
* |
|
* \param keys_first1 The beginning of the first input range of keys. |
|
* \param keys_last1 The end of the first input range of keys. |
|
* \param keys_first2 The beginning of the second input range of keys. |
|
* \param keys_last2 The end of the second input range of keys. |
|
* \param values_first1 The beginning of the first input range of values. |
|
* \param values_first2 The beginning of the first input range of values. |
|
* \param keys_result The beginning of the output range of keys. |
|
* \param values_result The beginning of the output range of values. |
|
* \param comp Comparison operator. |
|
* \return A \p pair \c p such that <tt>p.first</tt> is the end of the output range of keys, |
|
* and such that <tt>p.second</tt> is the end of the output range of values. |
|
* |
|
* \tparam InputIterator1 is a model of <a href="http://www.sgi.com/tech/stl/InputIterator.html">Input Iterator</a>, |
|
* \p InputIterator1 and \p InputIterator2 have the same \c value_type, |
|
* \p InputIterator1's \c value_type is a model of <a href="http://www.sgi.com/tech/stl/LessThanComparable">LessThan Comparable</a>, |
|
* the ordering on \p InputIterator1's \c value_type is a strict weak ordering, as defined in the <a href="http://www.sgi.com/tech/stl/LessThanComparable">LessThan Comparable</a> requirements, |
|
* and \p InputIterator1's \c value_type is convertable to a type in \p OutputIterator's set of \c value_types. |
|
* \tparam InputIterator2 is a model of <a href="http://www.sgi.com/tech/stl/InputIterator.html">Input Iterator</a>, |
|
* \p InputIterator2 and \p InputIterator1 have the same \c value_type, |
|
* \p InputIterator2's \c value_type is a model of <a href="http://www.sgi.com/tech/stl/LessThanComparable">LessThan Comparable</a>, |
|
* the ordering on \p InputIterator2's \c value_type is a strict weak ordering, as defined in the <a href="http://www.sgi.com/tech/stl/LessThanComparable">LessThan Comparable</a> requirements, |
|
* and \p InputIterator2's \c value_type is convertable to a type in \p OutputIterator's set of \c value_types. |
|
* \tparam InputIterator3 is a model of <a href="http://www.sgi.com/tech/stl/InputIterator.html">Input Iterator</a>, |
|
* and \p InputIterator3's \c value_type is convertible to a type in \p OutputIterator2's set of \c value_types. |
|
* \tparam InputIterator4 is a model of <a href="http://www.sgi.com/tech/stl/InputIterator.html">Input Iterator</a>, |
|
* and \p InputIterator4's \c value_type is convertible to a type in \p OutputIterator2's set of \c value_types. |
|
* \tparam OutputIterator1 is a model of <a href="http://www.sgi.com/tech/stl/OutputIterator.html">Output Iterator</a>. |
|
* \tparam OutputIterator2 is a model of <a href="http://www.sgi.com/tech/stl/OutputIterator.html">Output Iterator</a>. |
|
* \tparam StrictWeakCompare is a model of <a href="http://www.sgi.com/tech/stl/StrictWeakOrdering.html">Strict Weak Ordering</a>. |
|
* |
|
* \pre The ranges <tt>[keys_first1, keys_last1)</tt> and <tt>[keys_first2, keys_last2)</tt> shall be sorted with respect to \p comp. |
|
* \pre The resulting ranges shall not overlap with any input range. |
|
* |
|
* The following code snippet demonstrates how to use \p set_symmetric_difference_by_key to compute the |
|
* symmetric difference of two sets of integers sorted in descending order with their values. |
|
* |
|
* \code |
|
* #include <thrust/set_operations.h> |
|
* #include <thrust/functional.h> |
|
* ... |
|
* int A_keys[6] = {12, 10, 8, 6, 4, 2, 0}; |
|
* int A_vals[6] = { 0, 0, 0, 0, 0, 0, 0}; |
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* |
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* int B_keys[5] = {9, 7, 5, 3, 1}; |
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* int B_vals[5] = {1, 1, 1, 1, 1}; |
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* |
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* int keys_result[11]; |
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* int vals_result[11]; |
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* |
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* thrust::pair<int*,int*> end = thrust::set_symmetric_difference_by_key(A_keys, A_keys + 6, B_keys, B_keys + 5, A_vals, B_vals, keys_result, vals_result, thrust::greater<int>()); |
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* // keys_result is now {12, 10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0} |
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* // vals_result is now { 0, 1, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0} |
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* \endcode |
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* |
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* \see \p set_symmetric_difference_by_key |
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* \see \p set_intersection_by_key |
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* \see \p set_difference_by_key |
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* \see \p sort_by_key |
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* \see \p is_sorted |
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*/ |
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template<typename InputIterator1, |
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typename InputIterator2, |
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typename InputIterator3, |
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typename InputIterator4, |
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typename OutputIterator1, |
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typename OutputIterator2, |
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typename StrictWeakCompare> |
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thrust::pair<OutputIterator1,OutputIterator2> |
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set_union_by_key(InputIterator1 keys_first1, |
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InputIterator1 keys_last1, |
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InputIterator2 keys_first2, |
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InputIterator2 keys_last2, |
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InputIterator3 values_first1, |
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InputIterator4 values_first2, |
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OutputIterator1 keys_result, |
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OutputIterator2 values_result, |
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StrictWeakCompare comp); |
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/*! \} // end set_operations |
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*/ |
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} // end thrust |
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#include <thrust/detail/set_operations.inl> |
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