From: ara.t.howard@...
Date: 2006-11-09T02:54:51+09:00
Subject: Re: Simple Math Problem

On Thu, 9 Nov 2006, Tim Pease wrote:

> Machine roundoff error. Floating point values are never precise on any 
> computer.
>
> The best way to compare two floating point values is to take there
> difference and make sure it lies withing some acceptable error limit.
>
> v1 = 80.04
> v2 = 0.12 * 667
> diff = v1-v2
> diff.abs < Float::EPSILON
>
> That last line returns false, so you need to choose a different epsilon ...
>
> diff.abs < 1.0e-12
>
> That will return true.

boy,  how bout an rcr for that behaviour if one write this

   2.0 =~ 2.0

??

-a
-- 
my religion is very simple.  my religion is kindness. -- the dalai lama