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

Erik de Castro Lopo erikd-lad at mega-nerd.com
Thu Jun 24 08:36:47 UTC 2004


On Thu, 24 Jun 2004 10:37:35 +0100
Simon Jenkins <sjenkins at blueyonder.co.uk> wrote:
> inline float FlushToZero( volatile float f )
> {
>    f += 9.8607615E-32f;
>    return f - 9.8607615E-32f;
> }
> 
> /* end */
> 
> The people who discovered it first call this method
> "Elimination by Quantification".
> 
> Its slightly blunt because it damages the precision of
> extremely low but not yet denormal numbers: Anything
> of magnitude < 2 ** -103 loses one bit of precision for
> each binary order of magnitude it is below that number.
> (This means that denormal numbers lose /all/ of their
> precision and become zero).

There we go!!! That is an elegant solution.

Erik
-- 
+-----------------------------------------------------------+
  Erik de Castro Lopo  nospam at mega-nerd.com (Yes it's valid)
+-----------------------------------------------------------+
"Republicans understand the importance of bondage between
mother and child." - George W. Bush
-- 
+-----------------------------------------------------------+
  Erik de Castro Lopo  nospam at mega-nerd.com (Yes it's valid)
+-----------------------------------------------------------+
Everyone seems to assume that the current system in America is capitalism.
I beg to differ. True capitalism does not involve false advertising,
distribution cartels, or political lobbying for special advantages in the
market. How can you call Microsoft or the RIAA capitalist, when their main
business is interfering with a free market? Some of us would like to see a
*return* to capitalism in this country. - Jim Flynn on Linuxtoday.com



More information about the Linux-audio-dev mailing list