ontroller</span> <span class="identifier">type</span><span class="special">;</span>
<span class="special">};</span>

<span class="special">}</span> <span class="special">}</span> <span class="special">}</span>
</pre>
<p>
      </p>
<p>
        The second one is a factory class <code class="computeroutput"><span class="identifier">boost</span><span class="special">::</span><span class="identifier">numeric</span><span class="special">::</span><span class="identifier">odeint</span><span class="special">::</spa