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43 lines
1.2 KiB
43 lines
1.2 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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#pragma once
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#include <thrust/detail/config.h>
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#include <thrust/detail/type_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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// since both arguments are known to be specializations of iterator_facade,
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// it's legal to access IteratorFacade2::difference_type
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template<typename IteratorFacade1, typename IteratorFacade2>
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struct distance_from_result
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: eval_if<
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is_convertible<IteratorFacade2,IteratorFacade1>::value,
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identity_<typename IteratorFacade1::difference_type>,
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identity_<typename IteratorFacade2::difference_type>
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>
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{};
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} // end detail
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} // end thrust
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