efeld, Potra and Shi that is asymptotically the most efficient known,
      and has been shown to be optimal for a certain classes of smooth functions.
      Variants with and without <a class="link" href="../policy.html" title="Chapter&#160;18.&#160;Policies: Controlling Precision, Error Handling etc">Policies</a> are provided.
    </p>
<p>
      Alternatively, <a class="link" href="roots_noderiv/bisect.html" title="Bisection">bisect</a>
      is a simple <a href="https://en.wikipedia.org/wiki/Bisection" t