 according to the current
      <a href='#decimal-places'><code>DECIMAL_PLACES</code></a>
      and <a href='#rounding-mode'><code>ROUNDING_MODE</code></a> settings.
    </p>
    <p>
      If a base is not specified, and this BigNumber has a positive
      exponent that is equal to or greater than the positive component of the
      current <a href="#exponential-at"><code>EXPONENTIAL_AT</code></a> setting,
      or a negative exponent equal to or less than the negative component of the
      setting, then e