o avoid numerical overflow the power terms that prefix the series and continued
        fraction parts are collected together into:
      </p>
<p>
        <span class="inlinemediaobject"><img src="../../../equations/beta8.svg"></span>
      </p>
<p>
        where la, lb and lc are the integration limits used for a, b, and a+b.
      </p>
<p>
        There are a few special cases worth mentioning:
      </p>
<p>
        When <span class="emphasis"><em>a</em></span> or <span class="emphasis"><em>b</em></span>