From: Eric Anderson <eric@...>
Date: 2004-10-14T22:34:39+09:00
Subject: Re: Rounding to X digits

Eric Anderson wrote:
> Obviously I could also enhance round to take an optional 
> argument but I wanted to see if there was an already existing function 
> in the Ruby std library that will do it for me.

To follow up my own post. If there isn't a function like what I am 
looking for in the standard library, I am using the following to make it 
like I want.

class Float
	alias :oldround :round
	def round( sd=0 )
		return (self * (10 ** sd)).oldround.to_f / (10**sd)
	end
end