public UnsignedInt128 getUnscaledValue() {
    return unscaledValue;
  }
Returns unscaled value of this {@code Decimal128}. Be careful because
changes on the returned object will affect the object. It is not
recommended to modify the object this method returns.

@return the unscaled value of this {@code Decimal128}.
common/src/java/org/apache/hadoop/hive/common/type/Decimal128.java