[PD] readsf~ harddisc access [denormals once again]

Tim Blechmann TimBlechmann at gmx.net
Tue Jun 15 20:39:11 CEST 2004


> > i'm still experiencing denormal problems with steve harris's ladspa
> > plugins ...
> 
> Tom Szilagyi is going through some serious work on his TAP plugins for
> exactly the same reason. He never tested them on Pentium before.
developers should have slow machines with big denormal problems ;-)

> What is SuSE's exact position on licenses? Not to open this box one
> more time for theoretical squabbling, but I wonder if they have
> cribbed something from the Intel compiler?
i'm not sure ... maybe they used a commercial compiler...
it it said, that the intel compiler had some improvements to detect and
remove denormal numbers, but i've never been able to prove that ... i
tried several compiler flags without success, the only success i had was
changing the PD_BADFLOAT macro...
the best sollution would probably be to rewrite the critical operations
in assembler for the critical (p4) systems ... using sse instructions...

thomas grill did something like that, but iirc only for altivec and
visual c, not for gcc (although i don't know the difference between vc
and gcc) ... when i have too much time, i'll probably look into it...

cheers...

-- 
 Tim                          mailto:TimBlechmann at gmx.de
                              ICQ: 96771783
--
The only people for me are the mad ones, the ones who are mad to live,
mad to talk, mad to be saved, desirous of everything at the same time,
the ones who never yawn or say a commonplace thing, but burn, burn,
burn, like fabulous yellow roman candles exploding like spiders across
the stars and in the middle you see the blue centerlight pop and
everybody goes "Awww!"
                                                          Jack Kerouac





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