/span><a class="link" href="ibeta_function.html#math_toolkit.special.sf_beta.ibeta_function.implementation">Implementation</a>
        </h5>
<p>
          This implementation is closely based upon <a href="http://portal.acm.org/citation.cfm?doid=131766.131776" target="_top">"Algorithm
          708; Significant digit computation of the incomplete beta function ratios",
          DiDonato and Morris, ACM, 1992.</a>
        </p>
<p>
          All four of these functions share a common implementation: this is 