From: Tim Pease <tim.pease@...>
Date: 2008-10-28T05:40:27+09:00
Subject: Re: float equality


On Oct 27, 2008, at 2:29 PM, Bilyk, Alex wrote:

> Mathematically 1.(0) is the same thing as 0.(9). Computers simply  
> represent this to whatever precision they can.
>

Hmmm ... my humor is a little to obtuse today. I was hoping the word  
"precisely" would cause a mental link to the word "precision" which is  
what this problem is all about -- precision and computer  
representations of floating point values.

Alas. I'll stick with my day job of writing software.

Blessings,
TwP

> -----Original Message-----
> From: Tim Pease [mailto:tim.pease@gmail.com]
> Sent: Monday, October 27, 2008 1:11 PM
> To: ruby-talk ML
> Subject: Re: float equality
>
> On Mon, Oct 27, 2008 at 11:09 AM, Todd Benson <caduceass@gmail.com>  
> wrote:
>>
>> Totally off-topic, but has any one figured out exactly why 1/9
>> (0.111...) plus 8/9 (0.888...) is 1 instead of 0.999... :-)
>>
>
> I figured it out once, but I can't remember precisely how it worked.
>
> TwP
>
>