From: Hal Fulton <hal9000@...>
Date: 2004-05-20T08:10:02+09:00
Subject: Re: bad maths

Martin larsson wrote:
> Hi
> 
> i = 0
> 100.times {
>    p i += 0.6
> }
> 
> results in:
> 5.6
> 5.7
> 5.8
> 5.9
> 5.99999999999999
> 6.09999999999999
> 6.19999999999999
> 
> on my XP maching with ruby 1.8.1-13. I used rubyinstaller to install it 
> if that matters
> 
> anyone more have this problem? anyway to fix it?

Look for a thread about a week or so ago. :)

I suggest you round off the numbers for output and/or for
calculations. And use integer arithmetic wherever you can.


Hal