[squeak-dev] Re: FFT >> #transformForward: doesn't use FFTPlugin

Andreas Raab andreas.raab at gmx.de
Tue Aug 3 03:44:28 UTC 2010


On 8/2/2010 8:37 PM, Levente Uzonyi wrote:
> I just realized that FFT >> #transformForward: doesn't use
> primitiveFFTTransformData from FFTPlugin. I took an old convolution test
> and found that it's ~11x faster with the primitive (220ms vs 19ms).
> Is it intentional that this method doesn't use the primitive?

Not intentional at all. Just a left over (IIRC) from some FloatArray 
speedup testing. Apparently, I left it side-by-side and nobody ever 
cared enough to notice the cheap 10x speedup :-)

Cheers,
   - Andreas



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