t *&#160;</td>
          <td class="paramname"><em>output_data</em>&#160;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td></td>
        </tr>
      </table>
</div><div class="memdoc">
<dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramdir">[in,out]</td><td class="paramname">ctx</td><td>Function context (e.g. temporary buffer). Check the function definition file to see if an additional buffer is required. Optional functi