ength <span class="emphasis"><em>n</em></span>. In addition, we must
      not forget the discretization error which is <span class="emphasis"><em>O</em></span>(Δ
      <span class="emphasis"><em>t</em></span><sup><span class="emphasis"><em>p</em></span></sup>). You can play around with the
      approximation order <span class="emphasis"><em>p</em></span> and the filter length <span class="emphasis"><em>n</em></span>:
    </p>
<pre class="programlisting"><span class="identifier">size_t</span> <span class=