From: matz@... (Yukihiro Matsumoto) Date: 2002-06-04T00:09:29+09:00 Subject: Re: Infinity (?!) Hi, In message "Re: Infinity (?!)" on 02/06/03, Paul Brannan writes: |I would expect that it is valid for two NaN's to equal each other, but |that because there are many different possible NaN's, they need not |necessarily equal each other. No, NaN should not be equal each other in any case, by its definition (IEEE 754). I don't know why Sean get "true". matz.