From: Chris Hulan <chris.hulan@...>
Date: 2009-07-24T23:05:08+09:00
Subject: Re: Arithmetic operation bug

On Jul 24, 9:11 am, Manoj Chourasia <manojchoura...@aol.com> wrote:
> v1="128.015"
> puts((v1.to_f*1000).to_i).to_s // giving 128014 instead of 128015
>
> Why the the result is rounding up to 128014 but the correct result
> should be 128015.
> --
> Posted viahttp://www.ruby-forum.com/.

Floats are tricky:
(120..130).each{|x| puts x,((x+0.015)*1000).to_i}

Have a look at "What Every Computer Scientist Should Know About
Floating-Point Arithmetic" (http://docs.sun.com/source/806-3568/
ncg_goldberg.html)