public static double calumRound(double arg, int places) {
        double tmp = (double) arg * (pow(10,places));
        int tmp1 = (int)Math.floor( tmp + 0.5 );
        double tmp2 = (double) tmp1 / (pow(10,places));
        return tmp2;
    }

    public static int pow(int arg, int times){
        int ret = 1;
        for ( int i = 1 ; i <= times ; i++ ) {
            ret = ret * arg;
        }
        return ret;
    }