From: Stefan Rusterholz <apeiros@...>
Date: 2007-07-19T23:11:54+09:00
Subject: Re: Float.to_int not working ??

unknown wrote:
> Hi all,
> 
> I must admit that I am new to Ruby, so maybe this is not a real bug?!
> 
> Trying the following
> 
> print "#{((1.0 + 0.025)/0.0002 + 1.0)} \n"
> print "#{((1.0 + 0.025)/0.0002 + 1.0).to_i} \n"
> 
> I get (with ruby 1.8.4 & 1.8.5, Linux) as output
> 
> 5126.0
> 5125
> 
> Any suggestions?

Yes. Learn about floats. Floats are approximations, that has some 
consequences. As for your code above:
printf "%.40f\n",((1.0 + 0.025)/0.0002 + 1.0) # prints:
5125.9999999999990905052982270717620849609375

Now you see why .to_i gives you 5125.

Regards
Stefan

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