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Enable 2d FFT #29

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Sep 22, 2024
Merged

Enable 2d FFT #29

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30 changes: 30 additions & 0 deletions MKL.NET.Native/dfti.c
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Original file line number Diff line number Diff line change
Expand Up @@ -22,6 +22,36 @@ DLLEXPORT MKL_LONG ComputeForward(const int n, MKL_Complex16 x[], MKL_Complex16
return status;
}

DLLEXPORT MKL_LONG ComputeForward2D(const int n, const int m, MKL_Complex16 *x, MKL_Complex16 *y)
{
DFTI_DESCRIPTOR_HANDLE handle;

MKL_LONG dims[2];
dims[0] = n;
dims[1] = m;
MKL_LONG status = DftiCreateDescriptor(&handle, DFTI_DOUBLE, DFTI_COMPLEX, 2, dims);
status = DftiSetValue(handle, DFTI_PLACEMENT, DFTI_NOT_INPLACE);
status = DftiCommitDescriptor(handle);
status = DftiComputeForward(handle, x, y);
status = DftiFreeDescriptor(&handle);
return status;
}

DLLEXPORT MKL_LONG ComputeBackward2D(const int n, const int m, MKL_Complex16 *x, MKL_Complex16 *y)
{
DFTI_DESCRIPTOR_HANDLE handle;

MKL_LONG dims[2];
dims[0] = n;
dims[1] = m;
MKL_LONG status = DftiCreateDescriptor(&handle, DFTI_DOUBLE, DFTI_COMPLEX, 2, dims);
status = DftiSetValue(handle, DFTI_PLACEMENT, DFTI_NOT_INPLACE);
status = DftiCommitDescriptor(handle);
status = DftiComputeBackward(handle, x, y);
status = DftiFreeDescriptor(&handle);
return status;
}

DLLEXPORT MKL_LONG ComputeForwardReal(const int n, double x[], MKL_Complex16 y[])
{
DFTI_DESCRIPTOR_HANDLE handle;
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28 changes: 28 additions & 0 deletions MKL.NET/Dfti.cs
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Original file line number Diff line number Diff line change
Expand Up @@ -49,6 +49,34 @@ public static long ComputeForward(double[] x_in, Complex[] y_out)
public static long ComputeForward(Complex[] x_in, Complex[] y_out)
=> ComputeForward(x_in.Length, x_in, y_out);

[DllImport(MKL.NATIVE_DLL, CallingConvention = CallingConvention.Cdecl, ExactSpelling = true)]
static extern unsafe long ComputeForward2D(int n, int m, Complex* x_in, Complex* y_out);

public static unsafe long ComputeForward(Complex[,] x_in, Complex[,] y_out)
{
fixed (Complex* fixed_in = x_in)
{
fixed (Complex* fixed_out = y_out)
{
return ComputeForward2D(x_in.GetLength(0), x_in.GetLength(1), fixed_in, fixed_out);
}
}
}

[DllImport(MKL.NATIVE_DLL, CallingConvention = CallingConvention.Cdecl, ExactSpelling = true)]
static extern unsafe long ComputeBackward2D(int n, int m, Complex* x_in, Complex* y_out);

public static unsafe long ComputeBackward(Complex[,] x_in, Complex[,] y_out)
{
fixed (Complex* fixed_in = x_in)
{
fixed (Complex* fixed_out = y_out)
{
return ComputeBackward2D(x_in.GetLength(0), x_in.GetLength(1), fixed_in, fixed_out);
}
}
}

[DllImport(MKL.NATIVE_DLL, CallingConvention = CallingConvention.Cdecl, ExactSpelling = true)]
static extern long ComputeForwardScaleInplace(int n, [In, Out] Complex[] x_inout, double scale);
public static long ComputeForward(Complex[] x_inout, double scale)
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