T_Err_Invalid_Argument</code> is returned, and <code>len</code> is set to the required size (the number of designs). If the size of the array is greater than the number of designs, the remaining entries are set to&nbsp;0. On successful completion, <code>len</code> is set to the number of designs (i.e., the number of values written to the array).</p>
</td></tr>
</table>

<h4>output</h4>

<table class="fields">
<tr><td class="val" id="weightvector">weightvector</td><td class="desc">
<p>An array to be filled.<