to_d

# File ext/bigdecimal/lib/bigdecimal/util.rb, line 46
  def to_d(nFig=0)
    num = self.numerator.to_s
    if nFig<=0
      nFig = BigDecimal.double_fig*2+1
    end
    BigDecimal.new(num).div(self.denominator,nFig)
  end