ions/ibeta2.png"></span>
        </p>
<h5>
<a name="math_toolkit.special.sf_beta.ibeta_function.h2"></a>
          <span class="phrase"><a name="math_toolkit.special.sf_beta.ibeta_function.accuracy"></a></span><a class="link" href="ibeta_function.html#math_toolkit.special.sf_beta.ibeta_function.accuracy">Accuracy</a>
        </h5>
<p>
          The following tables give peak and mean relative errors in over various
          domains of a, b and x, along with comparisons to the <a href="http://www.gnu.org/so