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- To: LISP-FORUM at MIT-MC
- From: Jeffrey P. Golden <JPG at MIT-MC>
- Date: Tue ,8 Dec 81 19:47:00 EDT
I do not agree with VaughanW.REFLECS that sqrt(-4) "ought" to return
(2*i, -2*i) or ERROR. I think most LISP users would expect 2*i or ERROR.
(Who's to say "sqrt" doesn't mean principal branch of sqrt, anyway?
LISP documentation should make this clear.)
After all, how many LISPs now return (2.0, -2.0) for (sqrt 4.0) ?