From: "erlercw@..." <erlercw@...>
Date: 2004-11-15T10:53:36+09:00
Subject: Re: rational.rb Integer#lcm correction

Sorry, I forgot Integer#gcdlcm.

>  def lcm(other)
>    if self.zero? or other.zero?
>      0
>    else
>      (self.div(self.gcd(other)) * other).abs
>    end
>  end

  def gcdlcm(other)
    gcd = self.gcd(other)
    if self.zero? or other.zero?
      [gcd, 0]
    else
      [gcd, (self.div(gcd) * other).abs]
    end
  end