/usr/include/thrust/detail/casts.h is in libthrust-dev 1.6.0-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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* 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 casts.h
* \brief Unsafe casts for internal use.
*/
#pragma once
#include <thrust/iterator/iterator_traits.h>
namespace thrust
{
namespace detail
{
namespace dispatch
{
template<typename TrivialIterator>
typename thrust::iterator_traits<TrivialIterator>::value_type *
raw_pointer_cast(TrivialIterator i,
thrust::random_access_host_iterator_tag)
{
typedef typename thrust::iterator_traits<TrivialIterator>::value_type * Pointer;
// cast away constness
return const_cast<Pointer>(&*i);
} // end raw_pointer_cast()
// this path will work for device_ptr & device_vector::iterator
template<typename TrivialIterator>
typename thrust::iterator_traits<TrivialIterator>::value_type *
raw_pointer_cast(TrivialIterator i,
thrust::random_access_device_iterator_tag)
{
typedef typename thrust::iterator_traits<TrivialIterator>::value_type * Pointer;
// cast away constness
return const_cast<Pointer>((&*i).get());
} // end raw_pointer_cast()
} // end dispatch
template<typename TrivialIterator>
typename thrust::iterator_traits<TrivialIterator>::value_type *raw_pointer_cast(TrivialIterator i)
{
return detail::dispatch::raw_pointer_cast(i, thrust::iterator_traits<TrivialIterator>::iterator_category());
} // end raw_pointer_cast()
} // end detail
} // end thrust
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