From: James Edward Gray II <james@...>
Date: 2005-12-23T13:11:13+09:00
Subject: Re: BigDecimal#sqrt

On Dec 22, 2005, at 4:04 PM, James Edward Gray II wrote:

> I'm trying to understand the argument to BigDecimal#sqrt.  I  
> figured it was for precision and it does seem to affect it, but I  
> can't understand the exactly relationship.  Can anyone tell me what  
> the argument controls and how?

Let me try asking me question a different way...  Is this the correct  
way to get a printable sqrt() with 16 digits precision?

 >> sprintf "%.16f", BigDecimal.new("66543").sqrt(16)
=> "257.9592991151890260"

James Edward Gray II