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/*
* Copyright 2008-2021 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/iterator/reverse_iterator.h>
#include <thrust/iterator/iterator_traits.h>
THRUST_NAMESPACE_BEGIN
namespace detail
{
__thrust_exec_check_disable__
template<typename Iterator>
__host__ __device__
Iterator prior(Iterator x)
{
return --x;
} // end prior()
} // end detail
template<typename BidirectionalIterator>
__host__ __device__
reverse_iterator<BidirectionalIterator>
::reverse_iterator(BidirectionalIterator x)
:super_t(x)
{
} // end reverse_iterator::reverse_iterator()
template<typename BidirectionalIterator>
template<typename OtherBidirectionalIterator>
__host__ __device__
reverse_iterator<BidirectionalIterator>
::reverse_iterator(reverse_iterator<OtherBidirectionalIterator> const &r
// XXX msvc screws this up
#if THRUST_HOST_COMPILER != THRUST_HOST_COMPILER_MSVC
, typename thrust::detail::enable_if<
thrust::detail::is_convertible<
OtherBidirectionalIterator,
BidirectionalIterator
>::value
>::type *
#endif // MSVC
)
:super_t(r.base())
{
} // end reverse_iterator::reverse_iterator()
template<typename BidirectionalIterator>
__host__ __device__
typename reverse_iterator<BidirectionalIterator>::super_t::reference
reverse_iterator<BidirectionalIterator>
::dereference() const
{
return *thrust::detail::prior(this->base());
} // end reverse_iterator::increment()
template<typename BidirectionalIterator>
__host__ __device__
void reverse_iterator<BidirectionalIterator>
::increment()
{
--this->base_reference();
} // end reverse_iterator::increment()
template<typename BidirectionalIterator>
__host__ __device__
void reverse_iterator<BidirectionalIterator>
::decrement()
{
++this->base_reference();
} // end reverse_iterator::decrement()
template<typename BidirectionalIterator>
__host__ __device__
void reverse_iterator<BidirectionalIterator>
::advance(typename super_t::difference_type n)
{
this->base_reference() += -n;
} // end reverse_iterator::advance()
template<typename BidirectionalIterator>
template<typename OtherBidirectionalIterator>
__host__ __device__
typename reverse_iterator<BidirectionalIterator>::super_t::difference_type
reverse_iterator<BidirectionalIterator>
::distance_to(reverse_iterator<OtherBidirectionalIterator> const &y) const
{
return this->base_reference() - y.base();
} // end reverse_iterator::distance_to()
template<typename BidirectionalIterator>
__host__ __device__
reverse_iterator<BidirectionalIterator> make_reverse_iterator(BidirectionalIterator x)
{
return reverse_iterator<BidirectionalIterator>(x);
} // end make_reverse_iterator()
THRUST_NAMESPACE_END
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