/// <summary>
/// Create a 1D real to complex transform plan (fftw_plan_dft_r2c_1d).
/// </summary>
/// <param name="n">The logical size of the transform.</param>
/// <param name="input">FFTW array of 8-byte real numbers.</param>
/// <param name="output">FFTW array of 16-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.fftw_plan_dft_r2c_1d(n, input.Handle, output.Handle, flags);
mutex.ReleaseMutex();
return(new Plan(handle, input, output, false));
}
/// <summary>
/// Create a complex transform plan (fftw_plan_dft).
/// </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 16-byte complex numbers.</param>
/// <param name="output">FFTW array of 16-byte complex numbers.</param>
/// <param name="direction"></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, ComplexArray input, ComplexArray output, Direction direction, Options flags)
{
mutex.WaitOne();
var handle = NativeMethods.fftw_plan_dft(rank, n, input.Handle, output.Handle, direction, flags);
mutex.ReleaseMutex();
return(new Plan(handle, input, output, false));
}