ier">odeint</span> <span class="special">{</span>

<span class="keyword">template</span><span class="special">&lt;&gt;</span>
<span class="keyword">struct</span> <span class="identifier">controller_factory</span><span class="special">&lt;</span> <span class="identifier">custom_stepper</span> <span class="special">,</span> <span class="identifier">custom_controller</span> <span class="special">&gt;</span>
<span class="special">{</span>
    <span class="identifier">custom_controller</span> <span class="keywor