On Tue, 04 Jan 2000 11:30:40 -0700, Kevin Wampler wrote:
>I'm afraid that I can't help you with you question, but I have another
>similar question:
>
>Why does y-exp(-(x^2)-(z^2)) render the same as y-exp(-(x^2)-z^2) but
>differently from y-exp(-x^2-(z^2)) and y-exp(-x^2-z^2)?

Without looking at the code, it looks like it's using too high a priority 
for unary minus, so it's treating "-x^2" as "(-x)^2".  BTW, I suspect you'd
get better performance with the sqr() function.

-- 
These are my opinions.  I do NOT speak for the POV-Team.
The superpatch: http://www2.fwi.com/~parkerr/superpatch/
My other stuff: http://www2.fwi.com/~parkerr/traces.html

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