[PD] subnormal numbers explained

[James Dunn]

Quoth katja, on 13/03/2013 10:14:
> Subnormal numbers are a pain in the ass, they cause substantially 
> increased CPU load without doing anything useful for audio DSP. 
> Unfortunately it can happen in some Pd objects (notably [freeverb~]), 
> and spoil the performance of a Pd patch.
Yes I eventually found this out and started putting [freeverb~] in a 
subpatch with a [env~] connected to [sel 0] and then to a [switch~] 
object to turn off dsp when the reverb tail has finished. The logic 
ended up getting quite complicated but it did the job!

James