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/*! \file
  \brief Functor performing reduction operations used by epilogues.
*/

#pragma once

#include "cutlass/cutlass.h"
#include "cutlass/numeric_types.h"
#include "cutlass/array.h"
#include "cutlass/functional.h"
#include "cutlass/numeric_conversion.h"

/////////////////////////////////////////////////////////////////////////////////////////////////

namespace cutlass {
namespace epilogue {
namespace thread {

/////////////////////////////////////////////////////////////////////////////////////////////////

/// Applies a reduction sum to an array of elements.
///
///
template <
  typename Element_,                             ///< Data type used to load and store tensors
  int Count                                      ///< Number of elements computed per operation
>
class ReductionOpPlus {
public:

  using Element = Element_;
  static int const kCount = Count;

  using Fragment = Array<Element, kCount>;
  using Operator = plus<Fragment>;

  /// Host-constructable parameters structure
  struct Params { };

private:

  /// reduction operator
  Operator operator_;

public:

  /// Constructs the function object, possibly loading from pointers in host memory
  CUTLASS_HOST_DEVICE
  ReductionOpPlus(Params const &params) {

  }

  /// Computes Compute => 
  CUTLASS_HOST_DEVICE
  Fragment operator()(
    Fragment const &lhs,
    Fragment const &rhs) const {

    return operator_(lhs, rhs);
  }
};

/////////////////////////////////////////////////////////////////////////////////////////////////

} // namespace thread
} // namespace epilogue
} // namespace cutlass
