l">,</span>
                           <span class="identifier">function_type</span> <span class="identifier">func</span><span class="special">)</span>
<span class="special">{</span>
   <span class="keyword">unsigned</span> <span class="identifier">n</span> <span class="special">=</span> <span class="number">1U</span><span class="special">;</span>

   <span class="identifier">value_type</span> <span class="identifier">h</span> <span class="special">=</span> <span class="special">(</span><span class="identif