/*
 *  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>
#include <thrust/system/detail/generic/tag.h>

THRUST_NAMESPACE_BEGIN
namespace system
{
namespace detail
{
namespace generic
{


template<typename DerivedPolicy,
         typename InputIterator,
         typename RandomAccessIterator,
         typename OutputIterator>
__host__ __device__
  OutputIterator gather(thrust::execution_policy<DerivedPolicy> &exec,
                        InputIterator                            map_first,
                        InputIterator                            map_last,
                        RandomAccessIterator                     input_first,
                        OutputIterator                           result);


template<typename DerivedPolicy,
         typename InputIterator1,
         typename InputIterator2,
         typename RandomAccessIterator,
         typename OutputIterator>
__host__ __device__
  OutputIterator gather_if(thrust::execution_policy<DerivedPolicy> &exec,
                           InputIterator1                           map_first,
                           InputIterator1                           map_last,
                           InputIterator2                           stencil,
                           RandomAccessIterator                     input_first,
                           OutputIterator                           result);


template<typename DerivedPolicy,
         typename InputIterator1,
         typename InputIterator2,
         typename RandomAccessIterator,
         typename OutputIterator,
         typename Predicate>
__host__ __device__
  OutputIterator gather_if(thrust::execution_policy<DerivedPolicy> &exec,
                           InputIterator1                           map_first,
                           InputIterator1                           map_last,
                           InputIterator2                           stencil,
                           RandomAccessIterator                     input_first,
                           OutputIterator                           result,
                           Predicate                                pred);


} // end namespace generic
} // end namespace detail
} // end namespace system
THRUST_NAMESPACE_END

#include <thrust/system/detail/generic/gather.inl>