er.html#boost_numeric_odeint.concepts.stepper.associated_types">Associated
        types</a>
      </h5>
<div class="itemizedlist"><ul class="itemizedlist" style="list-style-type: disc; ">
<li class="listitem">
            <p><span class="bold"><strong>state_type</strong></span></p>
<p><code class="computeroutput"><span class="identifier">Stepper</span><span class="special">::</span><span class="identifier">state_type</span></code></p>
<p>The
            type characterizing the state of the ODE, hence <span