From: Mike Gold <mike.gold.4433@...>
Date: 2009-02-13T14:56:53+09:00
Subject: Re: Bug in converting float to int?

Jeff Vogt wrote:
> I just tried this on 1.8.6.  Is this a bug or am I missing something?
> 
>>> a=10.12
> => 10.12
>>> (a*100).to_i
> => 1011
> 
> And if this is in fact intended behavior, how can I actually get the
> results I want? (Converting dollars and cents into cents)

A FAQ.

irb(main):001:0> sprintf("%.16f", 100*10.12)
=> "1011.9999999999998863"

http://en.wikipedia.org/wiki/Floating_point#Accuracy_problems
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