dentifier">birth_size</span> <span class="special">-</span> <span class="identifier">offset</span> <span class="special">-</span> <span class="number">1</span><span class="special">);</span>
      <span class="keyword">unsigned</span> <span class="keyword">char</span> <span class="identifier">result</span> <span class="special">=</span> <span class="special">(</span><span class="identifier">x</span><span class="special">.</span><span class="identifier">birth</span> <span class="special">&amp;</span> <span c