au is the power of the
  base of the arithmetic closest to MAX(1, ||A||, ||G||, ||Q||) and
  ||.|| denotes the 1-norm.

</PRE>
<A name="References"><B><FONT SIZE="+1">References</FONT></B></A>
<PRE>
  [1] Benner, P., Byers, R., and Barth, E.
      Fortran 77 Subroutines for Computing the Eigenvalues of
      Hamiltonian Matrices. I: The Square-Reduced Method.
      ACM Trans. Math. Software, 26, 1, pp. 49-77, 2000.

</PRE>
<A name="Numerical Aspects"><B><FONT SIZE="+1">Numerical Aspects</FONT></B></A>
<PRE>