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

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Subject: Re: [linux-audio-dev] swh plugins and fixing undenormalize
From: eviltwin69_AT_cableone.net
Date: Thu Jun 24 2004 - 17:30:16 EEST

('binary' encoding is not supported, stored as-is) 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 ;-)

Jan

On Thu, 24 Jun 2004 11:03 , Tim Blechmann <TimBlechmann_AT_gmx.net> sent:

>> Since the problem is denormalised numbers, has anybody thought of
>> adding a small DC offset (1e-15) or alternating the
>> addition/subraction of a small value?
>of course it is possible to add a small dc offset ... but what if we are
>working in a feedback loop? or even worse with a high pass filter?
>if you alter addition/substraction and send it throuth a low pass filer?
>the denormal problem is not a trivial one, but afaik a macro like this
>is the only one working for sure...
>
>cheers .... tim
>
>--
>TimBlechmann_AT_gmx.de','','','')">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."

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