oup>
<col align="left" valign="top">
<col>
</colgroup>
<tbody>
<tr>
<td><p><span class="term"><code class="computeroutput">comm</code></span></p></td>
<td><p>The communicator over which the prefix reduction will occur.</p></td>
</tr>
<tr>
<td><p><span class="term"><code class="computeroutput">in_value</code></span></p></td>
<td><p>The local value to be combined with the local values of other processes. For the array variant, the <code class="computeroutput">in_values</code> parameter points to the <code cla