From: Robert Parker <rlp1938@...>
Date: 2008-11-08T16:55:36+09:00
Subject: Re: what's easiest way to compare a Float & BigDecimal (i.e. like a equals mechanism)

On Sat, Nov 8, 2008 at 2:44 PM, Greg Hauptmann
<greg.hauptmann.ruby@gmail.com> wrote:
> that works - but my 6.5 number doesn't work - does the following also
> not work for you?
>
>>> a = BigDecimal.new('6.5')
> => #<BigDecimal:238875c,'0.65E1',8(8)>
>>> b = 6.5
> => 6.5
>>> a == b
> => false
>>> a.class
> => BigDecimal
>>> b.class
> => Float
>>>
>

You can rely on comparing floating point numbers for less than or
greater than only.
You can not reliably compare floating point numbers for equality period.
-- 
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