[SciPy-Dev] Scipy 1.0 roadmap
Dag Sverre Seljebotn
Tue Sep 24 15:33:06 CDT 2013
[Forwarding from Martin who's not subscribed.]
> It seems to me all the FORTRAN code there is plain vanilla Netlib
> extra ND and convolutions etc. are in C?
> But indeed, seems like Martin's C port doesn't include the DCT and
DST parts of
> FFTPACK, only complex and real FFT. That makes it not completely
trivial, but I
> wouldn't say "significant rewrite" is accurate either, it's just
> the C port of FFTPACK complete.
> Martin (on CC), how long did it take to port the complex/real FFTs
> to C?
Difficult to say, I spent much more time tweaking and polishing the code
porting, and I also had a template C implementation to begin with ...
But please have a look at http://www.netlib.org/fftpack/fft.c
This is a C port by Christopher Montgomery (of Ogg Vorbis/Opus fame),
put into public domain. This file should have DCTs/DSTs (single
but changing that should be trivial).
Hope this helps,
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