From: Tom Link Date: 2009-01-12T22:28:35+09:00 Subject: Re: Behavior of 0 and 0.0... > Relying on IEEE results is likely to cause problems downstream, so it's > best to catch these things at the earliest opportunity IMHO. You're probably right. This thread made me wonder though if I'd actually consider a division by zero error more ruby-like as the OP seemed to suggest. BTW in the meantime, I also checked maple and R and they both report 1.0/0.0 as infinity.