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#pragma once

#if THRUST_DEVICE_COMPILER == THRUST_DEVICE_COMPILER_HCC
#include <thrust/distance.h>
#include <thrust/pair.h>
#include <thrust/system/hip/config.h>
#include <thrust/system/hip/detail/execution_policy.h>

BEGIN_NS_THRUST
namespace hip_rocprim
{

    template <class Derived, class InputIt1, class InputIt2, class BinaryPred>
    pair<InputIt1, InputIt2> THRUST_HIP_FUNCTION
    mismatch(execution_policy<Derived>& policy,
             InputIt1                   first1,
             InputIt1                   last1,
             InputIt2                   first2,
             BinaryPred                 binary_pred);

    template <class Derived, class InputIt1, class InputIt2>
    pair<InputIt1, InputIt2> THRUST_HIP_FUNCTION
    mismatch(execution_policy<Derived>& policy,
             InputIt1                   first1,
             InputIt1                   last1,
             InputIt2                   first2);
} // namespace hip_rocprim
END_NS_THRUST

#include <thrust/system/hip/detail/find.h>

BEGIN_NS_THRUST
namespace hip_rocprim
{

    template <class Derived, class InputIt1, class InputIt2, class BinaryPred>
    pair<InputIt1, InputIt2> THRUST_HIP_FUNCTION
    mismatch(execution_policy<Derived>& policy,
             InputIt1                   first1,
             InputIt1                   last1,
             InputIt2                   first2,
             BinaryPred                 binary_pred)
    {
        typedef transform_pair_of_input_iterators_t<bool, InputIt1, InputIt2, BinaryPred>
            transform_t;

        transform_t transform_first = transform_t(first1, first2, binary_pred);

        transform_t result = hip_rocprim::find_if_not(
            policy, transform_first, transform_first + thrust::distance(first1, last1), identity());

        return make_pair(first1 + thrust::distance(transform_first, result),
                         first2 + thrust::distance(transform_first, result));
    }

    template <class Derived, class InputIt1, class InputIt2>
    pair<InputIt1, InputIt2> THRUST_HIP_FUNCTION
    mismatch(execution_policy<Derived>& policy,
             InputIt1                   first1,
             InputIt1                   last1,
             InputIt2                   first2)
    {
        typedef typename thrust::iterator_value<InputIt1>::type InputType1;
        return hip_rocprim::mismatch(policy, first1, last1, first2, equal_to<InputType1>());
    }

} // namespace hip_rocprim
END_NS_THRUST
#endif