as no convergence,
        </li>
<li class="listitem">
          Both were rejected if they didn't agree.
        </li>
</ul></div>
<p>
      Over the built-in types and range tested, errors are less than 10 std::numeric_limits&lt;RealType&gt;::epsilon().
    </p>
<p>
      However, that there was a whole domain (large <span class="emphasis"><em>h</em></span>, small
      <span class="emphasis"><em>a</em></span>) where it was not possible to generate any reliable
      test values (all the methods got rejec