/*
 *  Copyright 2008-2010 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.
 */


namespace thrust
{
namespace detail
{
namespace host
{
namespace detail
{

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

    return result;
}

} // end namespace detail
} // end namespace host
} // end namespace detail
} // end namespace thrust

