@Override
  public int compareTo(UnsignedInt128 o) {
    return compareTo(o.v);
  }
Serialize this object to the given array, putting only 32 bits data.

@param array
         array to write values to
@param offset
         offset of the int array
common/src/java/org/apache/hadoop/hive/common/type/UnsignedInt128.java