n><span class="special">(</span><span class="identifier">r</span><span class="special">.</span><span class="identifier">first</span><span class="special">,</span> <span class="identifier">r</span><span class="special">.</span><span class="identifier">second</span><span class="special">)</span> <span class="special">==</span> <span class="keyword">true</span>
</pre>
<p>
        or
      </p>
<pre class="programlisting"><span class="identifier">max_iter</span> <span class="special">&gt;=</span> <span class="i