Subject: Re: [linux-audio-user] Freeverb (packaged with CMT) and Ardour beta17.1 UPDATE!
From: Russell Hanaghan (hanaghan_AT_starband.net)
Date: Thu Jul 08 2004 - 01:45:19 EEST
On Wed, 2004-07-07 at 15:21, Malcolm Baldridge wrote:
> > The float denormal macro defined in Freeverb/Components/denormals.h
> > doesn't come out too well with recent gcc - I replaced it with this
> > (which turned up on this list during a discussion about denormal
> > handling):
> >
> > static inline float
> > undenormalise(volatile float s)
> > {
> > s += 9.8607615E-32f;
> > return s - 9.8607615E-32f;
> > }
>
> You might also be inadvertantly coming up against some "bugs" (the gcc team
> doesn't admit they are bugs) in modern GCC compilers with respect to
> floating point intermediate formats and potential losses (or increases) of
> precision.
Hmmm...well, me thinks I'm up against someone elses problem as I install
RPMS. This package was from a MDK 10.0 Contrib server.
>
> If you're using a CPU with SSE (Pentium 3 or newer, or AthlonXP or newer),
> try recompiling your binaries with -mfpmath=sse and see if the bug persists.
> Depending on the nature of the code, you may gain a measurable speed boost.
It's an Athalon XP +2500 (Barton). I sure hope thats not the problem.
I'll have to have a ceremonial burning of the bare bones box and resort
to my old Dell CPxj and CII Docking station. (Ugh!) :)
Can't I just use some "bug Spray" ? :/
R~
>
> The GCC team call this "the most reported non-bug", but I don't really agree
> with them on this being a non-bug.
>
> Read more at <http://gcc.gnu.org/bugzilla/show_bug.cgi?id=13719>
>
> =MB=
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