n> <span class="special">};</span>
</pre>
<p>
      Integration is simply a matter of calling the <code class="computeroutput"><span class="identifier">gauss</span><span class="special">&lt;</span><span class="keyword">double</span><span class="special">,</span>
      <span class="number">7</span><span class="special">&gt;::</span><span class="identifier">integrate</span></code> method:
    </p>
<pre class="programlisting"><span class="keyword">double</span> <span class="identifier">Q</span> <span class="sp