From: Gary Wright <gwtmp01@...>
Date: 2008-01-09T06:17:55+09:00
Subject: Re: Precision of Float


On Jan 8, 2008, at 3:50 PM, Kornelius Kalnbach wrote:

> Gary Wright write:
>> You're getting confused because Float#to_s rounds.
> ...while to_i and to_int are just chopping off the integer part,  
> like #floor, I guess?
>
> irb(main):020:0> "%0.15f" % (8.2 * 100)
> => "819.999999999999886"
>
> floats are weird things.

I think a lot of the mystery comes from the implicit base2/base10  
conversions that most programmers don't take into consideration.

Gary Wright