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@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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