fier">s</span> <span class="special">)</span> <span class="keyword">const</span> <span class="special">;</span>

        <span class="comment">// Internal member functions:</span>

        <span class="keyword">static</span> <span class="identifier">range_check_result</span> <span class="identifier">out_of_range</span>      <span class="special">(</span> <span class="identifier">argument_type</span> <span class="identifier">s</span> <span class="special">)</span> <span class="special">;</span>
        <span