From: Aldric Giacomoni <aldric@...>
Date: 2009-10-29T03:48:31+09:00
Subject: Re: Ruby can't subtract ?

Matthew K. Williams wrote:
> On Thu, 29 Oct 2009, Aldric Giacomoni wrote:
> 
>> I bash my head against the wall? :)
> Pamphlet -> http://en.wikipedia.org/wiki/IEEE_754-2008
> 
> Popcorn, well, it's kinda hard to transmit over the wire. ;-)
> 
> As a rule of thumb, if you really care about the decimals, either use
> BigDecimal or integers (and keep track of where the decimal should be --
> this is common for $$$$).  Unfortunately, this is not limited to ruby,
> either -- C, Java, and a host of other languages all are subject.
> 
> Matt

Thanks. Both my head and the wall are safe for now. As one may have 
surmised, I don't deal with floating point values much, but this is 
frustrating. I do see that there are a couple of people who wrote gems 
on Rubyforge to handle this issue :)
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