From: Cameron McBride <cameron.mcbride@...>
Date: 2007-11-27T09:51:56+09:00
Subject: Re: Bizarre Floating point errors in Ruby? Serious bug?

Samuel,

Nothing is amiss.  You're just not interpreting the floating point correctly.

On 11/26/07, space.ship.traveller@gmail.com
<space.ship.traveller@gmail.com> wrote:
> Hi,
>
> I've come across a strange bug in ruby (running 1.8.6 on Linux, but
> confirmed also in 1.8.5 on an older Mac).
>
> >> (-140.14 * 100).to_i
> => -14013

Not strange at all, look at this:
>> puts "%.16f" % (-140.14*100)
-14013.9999999999981810

So, when you truncate with the #to_i, you get -14013 -- perfectly
consistent and logical.

Cameron