From: Yukihiro Matsumoto <matz@...>
Date: 2004-10-16T11:18:46+09:00
Subject: Re: "nan".to_f ?

Hi,

In message "Re: "nan".to_f ?"
    on Sat, 16 Oct 2004 05:54:36 +0900, furufuru@ccsr.u-tokyo.ac.jp (Ryo Furue) writes:

|   x = 0.0/0.0  #=> NaN
|   x.to_s       #=> "NaN"
|
|*then*
|
|   y = "NaN".to_f  # y *should* be NaN.

I agree that it's good to be so.  The point is how I can implement
that in portable way.  I'm waiting someone to enlighten me the way to
generate NaN portably, or that I can assume IEEE 754 for all the
platforms.  Maybe Gotoken is saying the latter in [ruby-talk:116791],
but I'm not sure yet.

							matz.