[LAD] denormal handling

Erik de Castro Lopo mle+la at mega-nerd.com
Sat Sep 29 22:09:35 UTC 2007

Jens M Andreasen wrote:

> Although you are approximately right in many parts of this discussion,
> you are wrong on the cost of the CPU flags to round twards zero. The
> cost is nil.

My memory of this is that changing the FPU flags causes a pipeline flush.
If the happens inside an inner loop, this has a **huge** performance

> Unlike other forms of Voodoo, we can neasure this.

Have you?

Erik de Castro Lopo
Orcad Express 9: "Its a nice demo but I wouldn't want to use it
on a day-to-day basis" -- me

More information about the Linux-audio-dev mailing list