ifier">deriv_type</span> <span class="special">&amp;</span> <a class="link" href="dense_output_r_idp20189216.html#idp20213328-bb"><span class="identifier">get_current_deriv</span></a><span class="special">(</span><span class="keyword">void</span><span class="special">)</span><span class="special">;</span>
  <span class="keyword">const</span> <span class="identifier">deriv_type</span> <span class="special">&amp;</span> <a class="link" href="dense_output_r_idp20189216.html#idp20214144-bb"><span class="identif