You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
150 lines
4.1 KiB
150 lines
4.1 KiB
/* |
|
* Copyright 2008-2012 NVIDIA Corporation |
|
* |
|
* Licensed under the Apache License, Version 2.0 (the "License"); |
|
* you may not use this file except in compliance with the License. |
|
* You may obtain a copy of the License at |
|
* |
|
* http://www.apache.org/licenses/LICENSE-2.0 |
|
* |
|
* Unless required by applicable law or agreed to in writing, software |
|
* distributed under the License is distributed on an "AS IS" BASIS, |
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
|
* See the License for the specific language governing permissions and |
|
* limitations under the License. |
|
*/ |
|
|
|
#include <thrust/detail/config.h> |
|
#include <thrust/detail/cstdint.h> |
|
#include <thrust/system/cuda/detail/detail/set_operation.h> |
|
|
|
namespace thrust |
|
{ |
|
namespace system |
|
{ |
|
namespace cuda |
|
{ |
|
namespace detail |
|
{ |
|
namespace set_symmetric_difference_detail |
|
{ |
|
|
|
|
|
struct serial_bounded_set_symmetric_difference |
|
{ |
|
// max_input_size <= 32 |
|
template<typename Size, typename InputIterator1, typename InputIterator2, typename OutputIterator, typename Compare> |
|
inline __device__ |
|
thrust::detail::uint32_t operator()(Size max_input_size, |
|
InputIterator1 first1, InputIterator1 last1, |
|
InputIterator2 first2, InputIterator2 last2, |
|
OutputIterator result, |
|
Compare comp) |
|
{ |
|
thrust::detail::uint32_t active_mask = 0; |
|
thrust::detail::uint32_t active_bit = 1; |
|
|
|
while(first1 != last1 && first2 != last2) |
|
{ |
|
if(comp(*first1,*first2)) |
|
{ |
|
*result = *first1; |
|
active_mask |= active_bit; |
|
++first1; |
|
} // end if |
|
else if(comp(*first2,*first1)) |
|
{ |
|
*result = *first2; |
|
active_mask |= active_bit; |
|
++first2; |
|
} // end else if |
|
else |
|
{ |
|
++first1; |
|
++first2; |
|
} // end else |
|
|
|
++result; |
|
active_bit <<= 1; |
|
} // end while |
|
|
|
while(first1 != last1) |
|
{ |
|
*result = *first1; |
|
++first1; |
|
++result; |
|
active_mask |= active_bit; |
|
active_bit <<= 1; |
|
} |
|
|
|
while(first2 != last2) |
|
{ |
|
*result = *first2; |
|
++first2; |
|
++result; |
|
active_mask |= active_bit; |
|
active_bit <<= 1; |
|
} |
|
|
|
return active_mask; |
|
} |
|
|
|
|
|
template<typename Size, typename InputIterator1, typename InputIterator2, typename Compare> |
|
inline __device__ |
|
Size count(Size max_input_size, |
|
InputIterator1 first1, InputIterator1 last1, |
|
InputIterator2 first2, InputIterator2 last2, |
|
Compare comp) |
|
{ |
|
Size result = 0; |
|
|
|
while(first1 != last1 && first2 != last2) |
|
{ |
|
if(comp(*first1,*first2)) |
|
{ |
|
++first1; |
|
++result; |
|
} // end if |
|
else if(comp(*first2,*first1)) |
|
{ |
|
++first2; |
|
++result; |
|
} // end else if |
|
else |
|
{ |
|
++first1; |
|
++first2; |
|
} // end else |
|
} // end while |
|
|
|
return result + thrust::max(last1 - first1,last2 - first2); |
|
} |
|
}; // end serial_bounded_set_symmetric_difference |
|
|
|
|
|
} // end namespace set_symmetric_difference_detail |
|
|
|
|
|
template<typename DerivedPolicy, |
|
typename RandomAccessIterator1, |
|
typename RandomAccessIterator2, |
|
typename RandomAccessIterator3, |
|
typename Compare> |
|
RandomAccessIterator3 set_symmetric_difference(execution_policy<DerivedPolicy> &exec, |
|
RandomAccessIterator1 first1, |
|
RandomAccessIterator1 last1, |
|
RandomAccessIterator2 first2, |
|
RandomAccessIterator2 last2, |
|
RandomAccessIterator3 result, |
|
Compare comp) |
|
{ |
|
return thrust::system::cuda::detail::detail::set_operation(exec, first1, last1, first2, last2, result, comp, set_symmetric_difference_detail::serial_bounded_set_symmetric_difference()); |
|
} // end set_symmetric_difference |
|
|
|
|
|
} // end namespace detail |
|
} // end namespace cuda |
|
} // end namespace system |
|
} // end namespace thrust |
|
|
|
|