In<span class="special">&gt;</span> <span class="keyword">void</span> <a class="link" href="runge_kutta4_classic.html#idp20678336-bb"><span class="identifier">adjust_size</span></a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">StateIn</span> <span class="special">&amp;</span><span class="special">)</span><span class="special">;</span>
  <span class="identifier">algebra_type</span> <span class="special">&amp;</span> <a class="link" href="runge_kutta4_classic.html#i