[vorbis-dev] gcc 2.95.2/irix/Laguerre_With_Deflation/inifinte loop
xiphmont at xiph.org
Mon Jul 2 10:41:18 PDT 2001
> >From the archive between my shoulders... and a different vorbis era...
> At one point I stumbled across some NaN's in the vq libs that garbled, rarely,
> an occasional file. I believe that one was in the vq "metrics" somewhere and
> fixed by doing a paranoia-check for sqrt(even-so-slightly--ve). Don't recall
> details, but it was "easily" fixed (once found) and didn't cause an infinite loop,
> I did change my encoder/vq to add trapping on -all- FPU exceptions after I
> caught that one, though, just in case. Didn't find more, but my test input
> was small (only around 10 Gigs of CD)and it wasn't mainstream libvorbis
I expect that the problem he found is a) real and b) similar to the
bug you describe but not the same thing. I was worried at first that
Laguerre wasn't converging (that should be impossible), but it getting
garbage input is likely to be something very simple.
--- >8 ----
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