/**
 * Some useful functions you might apply to rational numbers.
 *
 * @author Lots of people
 * @version Early
 */
public class RationalUtilities
{
  /**
   * Double a rational number (compute 2xX).
   */
  public static Rational dubble(Rational rat)
  {
    return rat.add(rat);
  } // dubble(Rational)
} // class RationalUtilities