From: Stefano Crocco <stefano.crocco@...>
Date: 2008-08-26T20:12:59+09:00
Subject: Re: BigDecimal with Float comparision bug.

On Tuesday 26 August 2008, Maciej Tomaka wrote:
> Hello,
>
> I have noticed that BigDecimal may fail in many cases when you try to
> compare it with float:
>
> Float:
> >> BigDecimal.new("25.0") == 25.0
>
> => false
>
> Decimal:
> >> BigDecimal.new("25.0") == 25
>
> => true
>
> >> (1..1000).select { |d| BigDecimal.new("#{d}.0") != d.to_f }.size
>
> => 414
>
> So 41.4% such comparisions are false!!!
>
> What do you think about it?
>
> Regards

It works correctly for me (ruby 1.8.7-p72) on gentoo linux (linux 2.6.25, gcc 
4.3.1). Which version of ruby are you using?

Stefano