Patch to mouse accel code

[Keith Packard]

Around 14 o'clock on Nov 11, Jim Gettys wrote:

> It would be better if the algorithm was coded to avoid floating point,
> if it isn't too hard.

This isn't a performance problem; at 100Hz, any system should be able to 
execute a few software FP ops.  As the existing X server arc and line 
drawing code requires FP, I don't see a problem with having the mouse code 
use it as well.

That said, code which can easily avoid FP is always nicer.

-keith


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