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

[Jan Depner]

On Sun, 2004-06-27 at 07:43, Tim Goetze wrote:
> [Tim Blechmann]
> >On Fri, 25 Jun 2004 17:38:24 -0500
> >Jan Depner <eviltwin69 at cableone.net> wrote:
> >
> >> On Fri, 2004-06-25 at 13:49, Tim Blechmann wrote:
> >> > > 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 ;-)
> 
> indeed sounds more like a fun proposal; nonetheless i'm wondering how
> many cycles 'ORing the exponent bits together' would take. with an
> 8-bit exponent and no assumption about its value made, 8 binary
> 'shift', 7 'or' and 1 'and' statement if i'm not badly mistaken. and
> if i'm not, a branch will probably hurt less.
> 

	That's why I said you probably don't want to see it.  I did it mostly
for fun.  When I finished coding it I was laughing too hard to test it.

Jan