public Decimal128 update(long val) {
    return update(val, (short) 0);
  }
Update the value of this object with the given {@code long}. The scale of
the {@code Decimal128} is zero.

@param val
         {@code long} value to be set to {@code Decimal128}.
common/src/java/org/apache/hadoop/hive/common/type/Decimal128.java