s evaluated at exactly -2, the function approaches different limiting
            values depending upon whether you approach from just above or just below
            -2. Hence the function has no well defined value at this point and a
            Pole Error will be raised.
          </p></dd>
<dt><span class="term">Overflow Error</span></dt>
<dd><p>
            Occurs when the result is either infinite, or too large to represent
            in the numeric type being returned by the function.
          </p>