ed transformations.

</PRE>
<A name="Comments"><B><FONT SIZE="+1">Further Comments</FONT></B></A>
<PRE>
  The individual non-unitary transformation matrices used in the
  reduction of A and B to a block-diagonal form have condition
  numbers of the order PMAX. This does not guarantee that their
  product is well-conditioned enough. The routine can be easily
  modified to provide estimates for the condition numbers of the
  clusters of generalized eigenvalues.
  For efficiency reasons, the "absolute value" (