/*
 *  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>

namespace thrust
{
namespace system
{
namespace detail
{
namespace sequential
{


__thrust_exec_check_disable__
template<typename BidirectionalIterator1,
         typename BidirectionalIterator2>
__host__ __device__
BidirectionalIterator2 copy_backward(BidirectionalIterator1 first, 
                                     BidirectionalIterator1 last, 
                                     BidirectionalIterator2 result)
{
  while (first != last)
  {
    --last;
    --result;
    *result = *last;
  }

  return result;
}


} // end namespace sequential
} // end namespace detail
} // end namespace system
} // end namespace thrust