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109 lines
3.2 KiB
109 lines
3.2 KiB
11 years ago
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/*
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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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#include <thrust/iterator/reverse_iterator.h>
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#include <thrust/iterator/iterator_traits.h>
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namespace thrust
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{
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namespace detail
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{
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__thrust_hd_warning_disable__
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template<typename Iterator>
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__host__ __device__
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Iterator prior(Iterator x)
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{
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return --x;
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} // end prior()
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} // end detail
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template<typename BidirectionalIterator>
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reverse_iterator<BidirectionalIterator>
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::reverse_iterator(BidirectionalIterator x)
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:super_t(x)
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{
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} // end reverse_iterator::reverse_iterator()
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template<typename BidirectionalIterator>
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template<typename OtherBidirectionalIterator>
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reverse_iterator<BidirectionalIterator>
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::reverse_iterator(reverse_iterator<OtherBidirectionalIterator> const &r
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// XXX msvc screws this up
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#ifndef _MSC_VER
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, typename thrust::detail::enable_if<
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thrust::detail::is_convertible<
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OtherBidirectionalIterator,
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BidirectionalIterator
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>::value
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>::type *
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#endif // _MSC_VER
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)
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:super_t(r.base())
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{
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} // end reverse_iterator::reverse_iterator()
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template<typename BidirectionalIterator>
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typename reverse_iterator<BidirectionalIterator>::super_t::reference
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reverse_iterator<BidirectionalIterator>
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::dereference(void) const
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{
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return *thrust::detail::prior(this->base());
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} // end reverse_iterator::increment()
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template<typename BidirectionalIterator>
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void reverse_iterator<BidirectionalIterator>
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::increment(void)
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{
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--this->base_reference();
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} // end reverse_iterator::increment()
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template<typename BidirectionalIterator>
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void reverse_iterator<BidirectionalIterator>
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::decrement(void)
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{
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++this->base_reference();
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} // end reverse_iterator::decrement()
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template<typename BidirectionalIterator>
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void reverse_iterator<BidirectionalIterator>
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::advance(typename super_t::difference_type n)
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{
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this->base_reference() += -n;
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} // end reverse_iterator::advance()
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template<typename BidirectionalIterator>
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template<typename OtherBidirectionalIterator>
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typename reverse_iterator<BidirectionalIterator>::super_t::difference_type
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reverse_iterator<BidirectionalIterator>
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::distance_to(reverse_iterator<OtherBidirectionalIterator> const &y) const
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{
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return this->base_reference() - y.base();
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} // end reverse_iterator::distance_to()
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template<typename BidirectionalIterator>
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__host__ __device__
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reverse_iterator<BidirectionalIterator> make_reverse_iterator(BidirectionalIterator x)
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{
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return reverse_iterator<BidirectionalIterator>(x);
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} // end make_reverse_iterator()
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} // end thrust
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