nchor" ></span>
              real(kind=real64),
            </td>
<td>intent(out),</td>
              <td>optional</td>            <td>
              
            </td>
            <td>::</td>
            <td><strong>fout</strong></td>
            <td>
                <p>An optional output, that if provided, returns the value of the 
function at x.</p>
            </td>
        </tr>
        <tr>
            <td>
              <span class="anchor" ></span>
              type(<a href='../type/iteration_beha