Re: [eigen] A complex FFT for Eigen

[Benjamin Schindler <bschindler@xxxxxxxxxxxxxxx>]

Benoit Jacob wrote:
> <snip>
>
> Let's give us a bit more time to determine whether we want FFT inside
> Eigen -- don't want to sound un-enthusiastic, it's rather that I'm
> currently busy and I don't want to make the wrong decision.
>
> Anybody reading this, opinions?
>   
May be I'm completely wrong on this. But my understanding is that most 
usually, fft/dft is done on dynamic size data, or at least on fixed size 
data with N not too small. What I would look into whether it would be 
easy to use fftw with eigen. From what I gather fftw is really one of 
the fastest FFT library out there. Even if eigen could get close to the 
performance of fftw the question still remains whether it's worth it. 
May be an optional module that integrates Eigen into fftw could be coded 
quickly and would reduce code duplication. fftw is gpl, so there are no 
issues there

Just my 2 cents

Cheers
Benjamin
> Cheers,
> Benoit
>
>   
> > Cheers
> >
> > Tim
> >
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