            <code class="computeroutput"><span class="identifier">std</span><span class="special">::</span><span class="identifier">length_error</span></code>
                    </p>
                  </td>
<td>
                    <p>
                      <code class="computeroutput"><span class="special">!</span> <span class="keyword">this</span><span class="special">-&gt;</span><span class="identifier">is_uint64</span><span class="special">()</span></code>
                    </p>
                  </t