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.
115 lines
3.6 KiB
115 lines
3.6 KiB
11 years ago
|
/*
|
||
|
|
* 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.
|
||
|
|
*/
|
||
|
|
|
||
|
|
|
||
|
|
/*! \file unique.inl
|
||
|
|
* \brief Inline file for unique.h.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#pragma once
|
||
|
|
|
||
|
|
#include <thrust/detail/config.h>
|
||
|
|
#include <thrust/system/detail/generic/unique.h>
|
||
|
|
#include <thrust/iterator/iterator_traits.h>
|
||
|
|
#include <thrust/transform.h>
|
||
|
|
#include <thrust/unique.h>
|
||
|
|
#include <thrust/detail/temporary_array.h>
|
||
|
|
#include <thrust/detail/internal_functional.h>
|
||
|
|
#include <thrust/detail/copy_if.h>
|
||
|
|
#include <thrust/distance.h>
|
||
|
|
#include <thrust/functional.h>
|
||
|
|
|
||
|
|
namespace thrust
|
||
|
|
{
|
||
|
|
namespace system
|
||
|
|
{
|
||
|
|
namespace detail
|
||
|
|
{
|
||
|
|
namespace generic
|
||
|
|
{
|
||
|
|
|
||
|
|
|
||
|
|
template<typename DerivedPolicy,
|
||
|
|
typename ForwardIterator>
|
||
|
|
ForwardIterator unique(thrust::execution_policy<DerivedPolicy> &exec,
|
||
|
|
ForwardIterator first,
|
||
|
|
ForwardIterator last)
|
||
|
|
{
|
||
|
|
typedef typename thrust::iterator_traits<ForwardIterator>::value_type InputType;
|
||
|
|
|
||
|
|
return thrust::unique(exec, first, last, thrust::equal_to<InputType>());
|
||
|
|
} // end unique()
|
||
|
|
|
||
|
|
|
||
|
|
template<typename DerivedPolicy,
|
||
|
|
typename ForwardIterator,
|
||
|
|
typename BinaryPredicate>
|
||
|
|
ForwardIterator unique(thrust::execution_policy<DerivedPolicy> &exec,
|
||
|
|
ForwardIterator first,
|
||
|
|
ForwardIterator last,
|
||
|
|
BinaryPredicate binary_pred)
|
||
|
|
{
|
||
|
|
typedef typename thrust::iterator_traits<ForwardIterator>::value_type InputType;
|
||
|
|
|
||
|
|
thrust::detail::temporary_array<InputType,DerivedPolicy> input(exec, first, last);
|
||
|
|
|
||
|
|
return thrust::unique_copy(exec, input.begin(), input.end(), first, binary_pred);
|
||
|
|
} // end unique()
|
||
|
|
|
||
|
|
|
||
|
|
template<typename DerivedPolicy,
|
||
|
|
typename InputIterator,
|
||
|
|
typename OutputIterator>
|
||
|
|
OutputIterator unique_copy(thrust::execution_policy<DerivedPolicy> &exec,
|
||
|
|
InputIterator first,
|
||
|
|
InputIterator last,
|
||
|
|
OutputIterator output)
|
||
|
|
{
|
||
|
|
typedef typename thrust::iterator_value<InputIterator>::type value_type;
|
||
|
|
return thrust::unique_copy(exec, first,last,output,thrust::equal_to<value_type>());
|
||
|
|
} // end unique_copy()
|
||
|
|
|
||
|
|
|
||
|
|
template<typename DerivedPolicy,
|
||
|
|
typename InputIterator,
|
||
|
|
typename OutputIterator,
|
||
|
|
typename BinaryPredicate>
|
||
|
|
OutputIterator unique_copy(thrust::execution_policy<DerivedPolicy> &exec,
|
||
|
|
InputIterator first,
|
||
|
|
InputIterator last,
|
||
|
|
OutputIterator output,
|
||
|
|
BinaryPredicate binary_pred)
|
||
|
|
{
|
||
|
|
// empty sequence
|
||
|
|
if(first == last)
|
||
|
|
return output;
|
||
|
|
|
||
|
|
thrust::detail::temporary_array<int,DerivedPolicy> stencil(exec, thrust::distance(first, last));
|
||
|
|
|
||
|
|
// mark first element in each group
|
||
|
|
stencil[0] = 1;
|
||
|
|
thrust::transform(exec, first, last - 1, first + 1, stencil.begin() + 1, thrust::detail::not2(binary_pred));
|
||
|
|
|
||
|
|
return thrust::copy_if(exec, first, last, stencil.begin(), output, thrust::identity<int>());
|
||
|
|
} // end unique_copy()
|
||
|
|
|
||
|
|
|
||
|
|
} // end namespace generic
|
||
|
|
} // end namespace detail
|
||
|
|
} // end namespace system
|
||
|
|
} // end namespace thrust
|
||
|
|
|