ier">Time</span> end_time<span class="special">,</span> <span class="identifier">Time</span> dt<span class="special">,</span> <span class="identifier">Observer</span> observer<span class="special">)</span><span class="special">;</span></pre></div>
<div class="refsect1">
<a name="idp28449712"></a><h2>Description</h2>
<p>This function integrates the ODE given by system with the given stepper. The observer is called after each step. If the stepper has no error control, the step size remains constant and the ob