Round a float : float « Number « Ruby

1. Ruby
2. Number
3. float

Round a float

class Float

  def roundf(places)
    temp = self.to_s.length
    sprintf("%#{temp}.#{places}f",self).to_f
  end

  def round2
    whole = self.floor
    fraction = self - whole
    if fraction == 0.5
      if (whole %2) == 0
        whole
      else
        whole+1
      end
    else
      self.round
    end

   end
end

 

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