[PD] Pd 0.37-2 released

Miller Puckette mpuckett at man104-1.ucsd.edu
Fri Jul 23 17:56:42 CEST 2004

Hi Tim,

Use "PD_BIGORSMALL" instead (I thought PD_BADFLOAT wouldn't be the
right name for a thing that was getting close to denormal.  The
new PD_BIGORSMALL zeros anything whose exponent falls out of the range
(-64,64) -- assuming I've coded it right.  This fixes underflow problems
with delay loops, for instance, and also protects agains unstable loops

Duh, I forgot to mention this in the "release notes", sorry.


On Fri, Jul 23, 2004 at 11:38:51AM +0200, Tim Blechmann wrote:
> hi miller, hi list,
> i was looking at the diffs between 0.37-1 and 0.37-2.
> you still have the PD_BADFLOAT script like this:
>   #define PD_BADFLOAT(f) ((((*(unsigned int*)&(f))&0x7f800000)==0) || \
>       (((*(unsigned int*)&(f))&0x7f800000)==0x7f800000))
> if you would use this:
> #define PD_BADFLOAT(f) ((((*(unsigned int*)&(f))&0x7f800000) <
> 0x08000000) || \    (((*(unsigned int*)&(f))&0x7f800000)==0x7f800000))
> almost denormal numbers would be flushed to zero, too...
> i had severe problems with denormals before adding this to the cvs, so
> i'd ask you, if you could apply this, too...
> cheers ... tim
> -- 
> 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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