>It isn't a very serious problem(you shouldn't expect a surface there
>anyway), and to catch these cases might take too much overhead...I don't
>know the isosurface code very well though. It might be possible to weed
>out functions resulting in these values.
>And are you sure about it evaluating to +infinity? I thought it was
>NaN...
>
>

Depends. If you play with the mathematics it can be proved that
x/0 = infinity where x!= 0 and that 0/0 can equal any number.

Generally however division by zero is undefined.

Gail
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