private static void fastSerializeIntPartForHiveDecimal(ByteBuffer buf, 
        int pos, int value, byte signum, boolean isFirstNonZero) {
      if (signum == -1 && value != 0) {
        value = (isFirstNonZero ? -value : ~value);
      }
      buf.putInt(pos, value);
    }
Updates the value of {@link #count} by checking {@link #v}.
common/src/java/org/apache/hadoop/hive/common/type/UnsignedInt128.java