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#pragma once

#include <thrust/detail/config.h>

#if THRUST_DEVICE_COMPILER == THRUST_DEVICE_COMPILER_HIP
#include <iterator>
#include <thrust/distance.h>
#include <thrust/system/hip/detail/reduce.h>

THRUST_NAMESPACE_BEGIN
namespace hip_rocprim
{

template <class Derived, class InputIt, class TransformOp, class T, class ReduceOp>
T THRUST_HIP_FUNCTION
transform_reduce(execution_policy<Derived>& policy,
                 InputIt                    first,
                 InputIt                    last,
                 TransformOp                transform_op,
                 T                          init,
                 ReduceOp                   reduce_op)
{
    typedef typename iterator_traits<InputIt>::difference_type size_type;
    size_type num_items = static_cast<size_type>(thrust::distance(first, last));
    typedef transform_input_iterator_t<T, InputIt, TransformOp> transformed_iterator_t;

    return reduce_n(
        policy, transformed_iterator_t(first, transform_op), num_items, init, reduce_op
    );
}

} // namespace hip_rocprim
THRUST_NAMESPACE_END
#endif
