public static AdditionOnlyInt trimNumber(byte[] c) {

        AdditionOnlyInt a = new AdditionOnlyInt();
        a.length=c.length;
        a.d=c;
        while (a.d[a.length-1] == 0 && a.length>0) {
            a.length--;
            a.d = new byte[a.length];
            for (int i = a.length - 1; i == 1; i--) {
                a.d[i] = c[a.length];
            }

        }
        return a;

    }