Re: [linux-audio-dev] swh plugins and fixing undenormalize

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Subject: Re: [linux-audio-dev] swh plugins and fixing undenormalize
From: Tim Blechmann (TimBlechmann_AT_gmx.net)
Date: Fri Jun 25 2004 - 21:49:35 EEST

> I have a denormal fix without a branch but you probably don't want to
> see it ;-)
> It's pretty simple, just OR the bits of the exponent together which
> gives either
> 0 (denormal) or 1, typecast that to float, and then multiply the
> original float by that (0.0 or 1.0). Voila, no branch, but it is
> messy looking ;-)

there is one problem ... if you multiply the denormal number with the 1
or 0, you will probably have one denormal operation on the cpu instead
of a branch ... i don't know, that's worse ...
but definitely, some benchmarks would be useful for any denormal
flushing algorithm...

cheers... 

-- 
mailto:TimBlechmann_AT_gmx.de    ICQ: 96771783

After one look at this planet any visitor from outer space 
would say "I want to see the manager."
				      William S. Burroughs

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