[Gsll-devel] fast-fourier-transform branch in repo.or.cz

[Liam Healy]

Sumant,

Thanks for your work.  This is a much-awaited addition.  I will look
it over this weekend with the idea of merging it into master; there
shouldn't be any reason not to but I do run the tests on SBCL and CCL
prior to committing to master just to make sure there are no
regressions.

I've been trying to make it a practice to port the GSL tests to GSLL.
These tests are obtained by running "make check" when building GSL.
The tests for FFT look like they are in fft/test*.c.  I will look at
porting those tests, but if you have any insight/tips in doing that
port, I'd appreciate your ideas.

Liam


On Mon, Oct 26, 2009 at 7:54 PM, Sumant Oemrawsingh <soemraws at xs4all.nl> wrote:
> Hey guys,
>
> As discussed on #lisp with LiamH, I have pushed a branch containing some
> preliminary stuff to get GSL's FFTs working. Unsurprisingly, the branch is
> called fast-fourier-transform, and should actually be easily merged with
> master without causing things to break. I just thought to make a branch out of
> it in case I totally, completely and utterly break stuff, since these are my
> first contributions to GSLL and my first non-trivial experience with git.
>
> What is implemented: All complex FFT (double and single floats) are
> implemented.
>
> What works/is tested: radix 2 and mixed radix stuff is working and tested with
> the examples in the manual. I will push the examples translated to lisp as
> well when I clean it up.
>
> What isn't tested: The decimation-in-frequency functions are implemented, but
> I have no idea what they are supposed to do.
>
> Over the next days, I will be implementing the real transforms as well, test
> all the functions with respect to their C counterparts and finally make some
> nicer wrapper functions around them (unless people are radically opposed to
> that).
>
> Thanks,
> Sumant Oemrawsingh
> (Sikander on #lisp)
>
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