ontaining the equation to optimize. </td></tr>
    <tr><td class="paramdir">[in,out]</td><td class="paramname">x</td><td>On input, the initial guess at the optimal point. On output, the updated optimal point estimate. </td></tr>
    <tr><td class="paramdir">[out]</td><td class="paramname">fout</td><td>An optional output, that if provided, returns the value of the function at <code>x</code>. </td></tr>
    <tr><td class="paramdir">[out]</td><td class="paramname">ib</td><td>An optional output, that if provide