[Haskell-cafe] ANN: two new packages: carray, fft

[Henning Thielemann]

On Thu, 14 Feb 2008, Jed Brown wrote:

> Hopefully these are mature enough to be generally useful.  I would
> appreciate any comments regarding the interface.  The FFTW API is not
> particularly nice for building a pure interface on.

because FFTW stores global data (called 'plan's)

>  Some of the transforms could be made slightly faster at the expense of
> a much nastier interface, but unless someone needs the extra few
> percent, or is pushing the memory limits on their machine, I'm not
> inclined to expose the underlying nastiness.

I want to mention once again that there is already a Fast Fourier
transform for arbitrary length that is coded entirely in Haskell.
  http://hackage.haskell.org/packages/archive/dsp/0.2/doc/html/Numeric-Transform-Fourier-FFT.html