=LEFT VALIGN=TOP><B>k    </B></TD><TD>&nbsp;- (optional) number of elements in the leading group
</TD></TR></TABLE>
<P>
<H3><FONT COLOR="#883300">Notes</FONT></H3>
This routine sorts the arrays provided in eigr and eigi, and also
sorts the dense system stored inside ds (assumed to be in condensed form).
The sorting criterion is specified with <A HREF="../DS/DSSetSlepcSC.html#DSSetSlepcSC">DSSetSlepcSC</A>().
<P>
If arrays rr and ri are provided, then a (partial) reordering based on these
values rather than 