,</span> <span class="keyword">float</span><span class="special">(</span><span class="keyword">float</span><span class="special">,</span> <span class="keyword">float</span><span class="special">),</span> <span class="keyword">int</span><span class="special">(</span><span class="keyword">int</span><span class="special">,</span> <span class="keyword">int</span><span class="special">)&gt;(</span><span class="identifier">lib</span><span class="special">,</span> <span class="string">"calculate"</span><span class