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/*
* Copyright 2008-2013 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.
*/
#pragma once
#include <thrust/detail/config.h>
#include <thrust/system/detail/generic/remove.h>
#include <thrust/iterator/iterator_traits.h>
#include <thrust/detail/copy_if.h>
#include <thrust/detail/internal_functional.h>
#include <thrust/detail/temporary_array.h>
#include <thrust/remove.h>
THRUST_NAMESPACE_BEGIN
namespace system
{
namespace detail
{
namespace generic
{
template<typename DerivedPolicy,
typename ForwardIterator,
typename T>
__host__ __device__
ForwardIterator remove(thrust::execution_policy<DerivedPolicy> &exec,
ForwardIterator first,
ForwardIterator last,
const T &value)
{
thrust::detail::equal_to_value<T> pred(value);
// XXX consider using a placeholder here
return thrust::remove_if(exec, first, last, pred);
} // end remove()
template<typename DerivedPolicy,
typename InputIterator,
typename OutputIterator,
typename T>
__host__ __device__
OutputIterator remove_copy(thrust::execution_policy<DerivedPolicy> &exec,
InputIterator first,
InputIterator last,
OutputIterator result,
const T &value)
{
thrust::detail::equal_to_value<T> pred(value);
// XXX consider using a placeholder here
return thrust::remove_copy_if(exec, first, last, result, pred);
} // end remove_copy()
template<typename DerivedPolicy,
typename ForwardIterator,
typename Predicate>
__host__ __device__
ForwardIterator remove_if(thrust::execution_policy<DerivedPolicy> &exec,
ForwardIterator first,
ForwardIterator last,
Predicate pred)
{
typedef typename thrust::iterator_traits<ForwardIterator>::value_type InputType;
// create temporary storage for an intermediate result
thrust::detail::temporary_array<InputType,DerivedPolicy> temp(exec, first, last);
// remove into temp
return thrust::remove_copy_if(exec, temp.begin(), temp.end(), temp.begin(), first, pred);
} // end remove_if()
template<typename DerivedPolicy,
typename ForwardIterator,
typename InputIterator,
typename Predicate>
__host__ __device__
ForwardIterator remove_if(thrust::execution_policy<DerivedPolicy> &exec,
ForwardIterator first,
ForwardIterator last,
InputIterator stencil,
Predicate pred)
{
typedef typename thrust::iterator_traits<ForwardIterator>::value_type InputType;
// create temporary storage for an intermediate result
thrust::detail::temporary_array<InputType,DerivedPolicy> temp(exec, first, last);
// remove into temp
return thrust::remove_copy_if(exec, temp.begin(), temp.end(), stencil, first, pred);
} // end remove_if()
template<typename DerivedPolicy,
typename InputIterator,
typename OutputIterator,
typename Predicate>
__host__ __device__
OutputIterator remove_copy_if(thrust::execution_policy<DerivedPolicy> &exec,
InputIterator first,
InputIterator last,
OutputIterator result,
Predicate pred)
{
return thrust::remove_copy_if(exec, first, last, first, result, pred);
} // end remove_copy_if()
template<typename DerivedPolicy,
typename InputIterator1,
typename InputIterator2,
typename OutputIterator,
typename Predicate>
__host__ __device__
OutputIterator remove_copy_if(thrust::execution_policy<DerivedPolicy> &exec,
InputIterator1 first,
InputIterator1 last,
InputIterator2 stencil,
OutputIterator result,
Predicate pred)
{
return thrust::copy_if(exec, first, last, stencil, result, thrust::detail::not1(pred));
} // end remove_copy_if()
} // end namespace generic
} // end namespace detail
} // end namespace system
THRUST_NAMESPACE_END
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