/**
 * Write a description of class Custom here.
 *
 * @author (your name)
 * @version (a version number or a date)
 */
public class Custom
{
    public static double round(double x)
    {
        return Math.round (x);
    }
    
    public static double abs(double x)
    {
        return Math.abs (x);
    }
}