private static void ValidateSign(FftwSign sign)
{
if (sign != FftwSign.FFTW_FORWARD && sign != FftwSign.FFTW_BACKWARD)
{
throw new ArgumentException($"Sign is not one of FFTW_FORWARD, FFTW_BACKWARD", nameof(sign));
}
}
public static FftwPlan Dft(int[] n, out FftwArray inArray, out FftwArray outArray,
FftwSign sign = FftwSign.FFTW_FORWARD, FftwFlags flags = FftwFlags.FFTW_MEASURE)
{
int length = DftLength(n);
inArray = new FftwArray(length);
outArray = new FftwArray(length);
return(Dft(n, inArray, outArray, sign, flags));
}
public static FftwPlan Dft(int[] n, FftwArray inArray, FftwArray outArray,
FftwSign sign = FftwSign.FFTW_FORWARD, FftwFlags flags = FftwFlags.FFTW_MEASURE)
{
int length = DftLength(n);
ValidateSign(sign);
ValidateArray(inArray, length, nameof(inArray));
ValidateArray(outArray, length, nameof(outArray));
return(new FftwPlan(flags,
fftw_plan_dft(n.Length, n,
inArray.Pointer, outArray.Pointer,
(int_t)sign, (uint_t)flags),
inArray, outArray));
}
public static FftwPlan Dft(int[] n, out FftwArray ioArray,
FftwSign sign = FftwSign.FFTW_FORWARD, FftwFlags flags = FftwFlags.FFTW_MEASURE)
{
ioArray = new FftwArray(DftLength(n));
return(Dft(n, ioArray, ioArray, sign, flags));
}
public static FftwPlan Dft3D(int n0, int n1, int n2, out FftwArray ioArray,
FftwSign sign = FftwSign.FFTW_FORWARD, FftwFlags flags = FftwFlags.FFTW_MEASURE)
{
ioArray = new FftwArray(DftLength(n0, n1, n2));
return(Dft3D(n0, n1, n2, ioArray, ioArray, sign, flags));
}