st (in
  magnitude) polynomial coefficients is relatively big, and either
  ALPHA or DELTA has the largest magnitude, then a standard
  eigenproblem is solved using the QR algorithm, and EVQ(I) are set
  to 1, for I = 1,2,3.

</PRE>
<A name="Numerical Aspects"><B><FONT SIZE="+1">Numerical Aspects</FONT></B></A>
<PRE>
  The algorithm is numerically stable.

</PRE>

<A name="Comments"><B><FONT SIZE="+1">Further Comments</FONT></B></A>
<PRE>
  None
</PRE>

<A name="Example"><B><FONT SIZE="+1">Example</FONT></B