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/*! \file
    \brief Matrix multiply
*/

#pragma once

#include "cutlass/arch/mma.h"
#include "cutlass/complex.h"
#include "cutlass/quaternion.h"
#include "cutlass/functional.h"

#include "cutlass/layout/matrix.h"
#include "cutlass/gemm/gemm.h"

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

namespace cutlass {
namespace arch {

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

/// Matrix multiply-add operation
template <
  /// Layout of A matrix
  typename LayoutA,
  /// Layout of B matrix
  typename LayoutB,
  /// Layout of C matrix
  typename LayoutC
>
struct Mma<gemm::GemmShape<1, 1, 1>, 1, float, LayoutA, float, LayoutB, float, LayoutC, OpMultiplyAdd> {

  using Shape = gemm::GemmShape<1, 1, 1>;
  using Operator = OpMultiplyAdd;
  using ElementC = float;

  CUTLASS_HOST_DEVICE
  void operator()(
    Array<float, 1> &d,
    Array<float, 1> const &a,
    Array<float, 1> const &b,
    Array<float, 1> const &c
  ) {
    d[0] = a[0] * b[0] + c[0];
  }
};

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

/// Matrix multiply-add operation
template <
  /// Layout of A matrix
  typename LayoutA,
  /// Layout of B matrix
  typename LayoutB,
  /// Layout of C matrix
  typename LayoutC
>
struct Mma<gemm::GemmShape<1, 1, 1>, 1, double, LayoutA, double, LayoutB, double, LayoutC, OpMultiplyAdd> {

  using Shape = gemm::GemmShape<1, 1, 1>;
  using Operator = OpMultiplyAdd;
  using ElementC = double;

  CUTLASS_HOST_DEVICE
  void operator()(
    Array<double, 1> &d,
    Array<double, 1> const &a,
    Array<double, 1> const &b,
    Array<double, 1> const &c
  ) {

    d[0] = a[0] * b[0] + c[0];
  }
};

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

/// Matrix multiply-add operation
template <
  /// Layout of A matrix
  typename LayoutA,
  /// Layout of B matrix
  typename LayoutB,
  /// Layout of C matrix
  typename LayoutC
>
struct Mma<gemm::GemmShape<1, 1, 1>, 1, int, LayoutA, int, LayoutB, int, LayoutC, OpMultiplyAdd> {

  using Shape = gemm::GemmShape<1, 1, 1>;
  using Operator = OpMultiplyAdd;
  using ElementC = int;

  CUTLASS_HOST_DEVICE
  void operator()(
    Array<int, 1> &d,
    Array<int, 1> const &a,
    Array<int, 1> const &b,
    Array<int, 1> const &c
  ) {

    d[0] = a[0] * b[0] + c[0];
  }
};

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

/// Matrix multiply-add operation
template <
  /// Layout of A matrix
  typename LayoutA,
  /// Layout of B matrix
  typename LayoutB,
  /// Layout of C matrix
  typename LayoutC
>
struct Mma<
  gemm::GemmShape<1, 1, 1>,
  1,
  complex<float>,
  LayoutA,
  complex<float>,
  LayoutB,
  complex<float>,
  LayoutC,
  OpMultiplyAdd> {

  using Shape = gemm::GemmShape<1, 1, 1>;
  using Operator = OpMultiplyAddComplex;
  using ElementC = complex<float>;

  CUTLASS_HOST_DEVICE
  void operator()(
    Array<complex<float>, 1> &d,
    Array<complex<float>, 1> const &a,
    Array<complex<float>, 1> const &b,
    Array<complex<float>, 1> const &c
  ) {

    d[0].real() = a[0].real() * b[0].real() + c[0].real();
    d[0].imag() = a[0].imag() * b[0].real() + c[0].imag();
    d[0].real() = -a[0].imag() * b[0].imag() + d[0].real();
    d[0].imag() = a[0].real() * b[0].imag() + d[0].imag();
  }
};

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

/// Matrix multiply-add operation
template <
  /// Layout of A matrix
  typename LayoutA,
  /// Layout of B matrix
  typename LayoutB,
  /// Layout of C matrix
  typename LayoutC
>
struct Mma<
  gemm::GemmShape<1, 1, 1>,
  1,
  complex<float>,
  LayoutA,
  float,
  LayoutB,
  complex<float>,
  LayoutC,
  OpMultiplyAdd> {

  using Shape = gemm::GemmShape<1, 1, 1>;
  using Operator = OpMultiplyAddComplex;
  using ElementC = complex<float>;

  CUTLASS_HOST_DEVICE
  void operator()(
    Array<complex<float>, 1> &d,
    Array<complex<float>, 1> const &a,
    Array<float, 1> const &b,
    Array<complex<float>, 1> const &c
  ) {

    d[0].real() = a[0].real() * b[0] + c[0].real();
    d[0].imag() = a[0].imag() * b[0] + c[0].imag();
  }
};

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

/// Matrix multiply-add operation
template <
  /// Layout of A matrix
  typename LayoutA,
  /// Layout of B matrix
  typename LayoutB,
  /// Layout of C matrix
  typename LayoutC
>
struct Mma<
  gemm::GemmShape<1, 1, 1>,
  1,
  float,
  LayoutA,
  complex<float>,
  LayoutB,
  complex<float>,
  LayoutC,
  OpMultiplyAdd> {

  using Shape = gemm::GemmShape<1, 1, 1>;
  using Operator = OpMultiplyAddComplex;
  using ElementC = complex<float>;

  CUTLASS_HOST_DEVICE
  void operator()(
    Array<complex<float>, 1> &d,
    Array<float, 1> const &a,
    Array<complex<float>, 1> const &b,
    Array<complex<float>, 1> const &c
  ) {

    d[0].real() = a[0] * b[0].real() + c[0].real();
    d[0].imag() = a[0] * b[0].imag() + d[0].imag();
  }
};

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

/// Matrix multiply-add operation
template <
  /// Layout of A matrix
  typename LayoutA,
  /// Layout of B matrix
  typename LayoutB,
  /// Layout of C matrix
  typename LayoutC
>
struct Mma<
  gemm::GemmShape<1, 1, 1>,
  1,
  complex<double>,
  LayoutA,
  complex<double>,
  LayoutB,
  complex<double>,
  LayoutC,
  OpMultiplyAdd> {

  using Shape = gemm::GemmShape<1, 1, 1>;
  using Operator = OpMultiplyAddComplex;
  using ElementC = complex<double>;

  CUTLASS_HOST_DEVICE
  void operator()(
    Array<complex<double>, 1> &d,
    Array<complex<double>, 1> const &a,
    Array<complex<double>, 1> const &b,
    Array<complex<double>, 1> const &c
  ) {

    d[0].real() = a[0].real() * b[0].real() + c[0].real();
    d[0].imag() = a[0].imag() * b[0].real() + c[0].imag();
    d[0].real() = -a[0].imag() * b[0].imag() + d[0].real();
    d[0].imag() = a[0].real() * b[0].imag() + d[0].imag();
  }
};

/// Matrix multiply-add operation
template <
  /// Layout of A matrix
  typename LayoutA,
  /// Layout of B matrix
  typename LayoutB,
  /// Layout of C matrix
  typename LayoutC
>
struct Mma<
  gemm::GemmShape<1, 1, 1>,
  1,
  complex<double>,
  LayoutA,
  double,
  LayoutB,
  complex<double>,
  LayoutC,
  OpMultiplyAdd> {

  using Shape = gemm::GemmShape<1, 1, 1>;
  using Operator = OpMultiplyAddComplex;
  using ElementC = complex<double>;

  CUTLASS_HOST_DEVICE
  void operator()(
    Array<complex<double>, 1> &d,
    Array<complex<double>, 1> const &a,
    Array<double, 1> const &b,
    Array<complex<double>, 1> const &c
  ) {

    d[0].real() = a[0].real() * b[0] + c[0].real();
    d[0].imag() = a[0].imag() * b[0] + c[0].imag();
  }
};

/// Matrix multiply-add operation
template <
  /// Layout of A matrix
  typename LayoutA,
  /// Layout of B matrix
  typename LayoutB,
  /// Layout of C matrix
  typename LayoutC
>
struct Mma<
  gemm::GemmShape<1, 1, 1>,
  1,
  double,
  LayoutA,
  complex<double>,
  LayoutB,
  complex<double>,
  LayoutC,
  OpMultiplyAdd> {

  using Shape = gemm::GemmShape<1, 1, 1>;
  using Operator = OpMultiplyAddComplex;
  using ElementC = complex<double>;

  CUTLASS_HOST_DEVICE
  void operator()(
    Array<complex<double>, 1> &d,
    Array<double, 1> const &a,
    Array<complex<double>, 1> const &b,
    Array<complex<double>, 1> const &c
  ) {

    d[0].real() = a[0] * b[0].real() + c[0].real();
    d[0].imag() = a[0] * b[0].imag() + d[0].imag();
  }
};

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

/// Matrix multiply-add operation
template <
  /// Layout of A matrix
  typename LayoutA,
  /// Layout of B matrix
  typename LayoutB,
  /// Layout of C matrix
  typename LayoutC
>
struct Mma<gemm::GemmShape<1, 1, 1>, 1, half_t, LayoutA, half_t, LayoutB, float, LayoutC, OpMultiplyAdd> {

  using Shape = gemm::GemmShape<1, 1, 1>;
  using Operator = OpMultiplyAdd;
  using ElementC = float;

  CUTLASS_HOST_DEVICE
  void operator()(
    Array<float, 1> &d,
    Array<half_t, 1> const &a,
    Array<half_t, 1> const &b,
    Array<float, 1> const &c
  ) {
    d[0] = float(a[0]) * float(b[0]) + c[0];
  }
};

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

/// Matrix multiply-add operation for Quaternions
template <
  /// Layout of A matrix
  typename LayoutA,
  /// Layout of B matrix
  typename LayoutB,
  /// Layout of C matrix
  typename LayoutC
>
struct Mma<gemm::GemmShape<1, 1, 1>, 1, Quaternion<float>, LayoutA, Quaternion<float>, LayoutB, Quaternion<float>, LayoutC, OpMultiplyAdd> {

  using Shape = gemm::GemmShape<1, 1, 1>;
  using Operator = OpMultiplyAdd;
  using Element = Quaternion<float>;
  using ElementC = Element;

  CUTLASS_HOST_DEVICE
  void operator()(
    Array<Element, 1> &d,
    Array<Element, 1> const &a,
    Array<Element, 1> const &b,
    Array<Element, 1> const &c
  ) {
    multiply_add<Element, Element, Element> op;
    d[0] = op(a[0], b[0], c[0]);
  }

};

}
}

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