/// <summary>
/// Create a real transform plan (fftwf_plan_r2r).
/// </summary>
/// <param name="rank">Number of dimensions.</param>
/// <param name="n">Array containing the logical size along each dimension.</param>
/// <param name="input">FFTW array of 4-byte real numbers.</param>
/// <param name="output">FFTW array of 4-byte real numbers.</param>
/// <param name="kind">An array containing the kind of real-to-real transform to compute along each dimension.</param>
/// <param name="flags">Flags that specify the behavior of the planner.</param>
/// <returns>The FFTW plan.</returns>
public static Plan Create(int rank, int[] n, RealArray input, RealArray output, Transform[] kind, Options flags)
{
mutex.WaitOne();
var handle = NativeMethods.fftwf_plan_r2r(rank, n, input.Handle, output.Handle, kind, flags);
mutex.ReleaseMutex();
return(new Plan(handle, input, output, false));
}
/// <summary>
/// Create a 1D real to complex transform plan (fftwf_plan_dft_r2c_1d).
/// </summary>
/// <param name="n">The logical size of the transform.</param>
/// <param name="input">FFTW array of 4-byte real numbers.</param>
/// <param name="output">FFTW array of 8-byte complex numbers.</param>
/// <param name="flags">Flags that specify the behavior of the planner.</param>
/// <returns>The FFTW plan.</returns>
public static Plan Create1(int n, RealArray input, ComplexArray output, Options flags)
{
mutex.WaitOne();
var handle = NativeMethods.fftwf_plan_dft_r2c_1d(n, input.Handle, output.Handle, flags);
mutex.ReleaseMutex();
return(new Plan(handle, input, output, false));
}
/// <summary>
/// Create a 2D real transform plan (fftwf_plan_r2r_2d).
/// </summary>
/// <param name="nx">The logical size of the transform along the first dimension.</param>
/// <param name="ny">The logical size of the transform along the second dimension.</param>
/// <param name="input">FFTW array of 4-byte real numbers.</param>
/// <param name="output">FFTW array of 4-byte real numbers.</param>
/// <param name="kindx">The kind of real-to-real transform to compute along the first dimension.</param>
/// <param name="kindy">The kind of real-to-real transform to compute along the second dimension.</param>
/// <param name="flags">Flags that specify the behavior of the planner.</param>
/// <returns>The FFTW plan.</returns>
public static Plan Create2(int nx, int ny, RealArray input, RealArray output, Transform kindx, Transform kindy, Options flags)
{
mutex.WaitOne();
var handle = NativeMethods.fftwf_plan_r2r_2d(nx, ny, input.Handle, output.Handle, kindx, kindy, flags);
mutex.ReleaseMutex();
return(new Plan(handle, input, output, false));
}
