ult
          tolerance, defined by TOLDEF = EPS, is used instead, where
          EPS is the machine precision (see LAPACK Library routine
          DLAMCH).
          This parameter is not referenced if ABSCHU = 'S',
          ULA = 'U', and ULB = 'U'.

</PRE>
<B>Workspace</B>
<PRE>
  IWORK   INTEGER array, dimension (2*MAX(M,N))
          This parameter is not referenced if ABSCHU = 'S',
          ULA = 'U', and ULB = 'U'.

  DWORK   DOUBLE PRECISION array, dimension (LDWORK)
          This parameter is 