merical Aspects"><B><FONT SIZE="+1">Numerical Aspects</FONT></B></A>
<PRE>                                                            3
  The algorithm is numerically backward stable and needs O(N )
  floating point operations.

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<A name="Comments"><B><FONT SIZE="+1">Further Comments</FONT></B></A>
<PRE>
  This routine does not perform any scaling of the matrices. Scaling
  might sometimes be useful, and it should be done externally.

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