   </td>
</tr>
<tr>
<td>
                <p>
                  g()
                </p>
              </td>
<td>
                <p>
                  Returns an object of type Gen::result_type.
                </p>
                <p>
                  Each time this operator is called then the next pair of <span class="emphasis"><em>a</em></span>
                  and <span class="emphasis"><em>b</em></span> values is returned. Or, if result_type
                  is an arithmetic type, then the next <spa