0+IWORK(3)) (if INIT = 'L' or 'B'), are set as
          described above.

</PRE>
<B>Error Indicator</B>
<PRE>
  INFO    INTEGER
          = 0:  successful exit;
          &lt; 0:  if INFO = -i, the i-th argument had an illegal
                value;
                otherwise, INFO has the value k*100 + j*10 + i,
                where k is defined below, i refers to the whole
                optimization process, and j refers to the
                initialization step (j = 0, if INIT = 'L' or 'N'),
        