GNU bug report logs - #30426
division inconsistency?

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Message #14 received at 30426 <at> debbugs.gnu.org (full text, mbox):

From: bil <at> ccrma.Stanford.EDU
To: Mark H Weaver <mhw <at> netris.org>
Cc: 30426 <at> debbugs.gnu.org
Subject: Re: bug#30426: division inconsistency?
Date: Mon, 12 Feb 2018 13:59:24 -0800

Thanks very much for the informative answer!  I am not sure what
(* 0 +nan.0) should return.  I lean toward +nan.0 mainly because
I assume NaNs exist to indicate an error somewhere, and you want
that to be returned. For (* 0 +inf.0) I have no druthers.
For (/ 0.0 0) and (/ +nan.0 0) s7 throws a divide-by-zero error,
but I have no good reason for doing this.  In s7, I'd prefer
to say (/ x y ...) is equal to (/ x (* y ...)) in all cases.

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