> > > because we choose to represent floating point
> > > exceptions with the special values Infinity
> > Are you using projective or affine infinity?
>
> I have absolutely no idea. Which one should we be using? How do we
> find out which one we are using?
If (-1)/0 is -Infinity you are using affine, if it's Infinity you
are using projective. IEEE754 allows you to have both (selectable
in some fashion). One is not better than the other; they are both
useful. The affine completion of the number axis makes the use of
-0 more comprehensible (1/(-Infinity) == -0, 1/(-0) == -Infinity).
-- Lennart
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