[linux-audio-dev] Fixed vs. floating point

Jens M Andreasen jens.andreasen at chello.se
Sun Oct 16 01:33:56 UTC 2005


On Fri, 2005-10-14 at 22:57 +0200, fons adriaensen wrote:
> ... ... Worse, unless you are using some specialised DSP chips that can do
> clipping in the ALU, implementing clipping in fixed point software usually leads
> to an immense waste of processing power.

The hardware need not be that specialized. Both mmx and altivec
implements 16bit saturating add and sub. Signed as well as unsigned.





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