 is the conjugate transpose of A,
         and ZLACON must be re-called with all the other parameters   
          unchanged.</pre><p>
<pre>   EST    (output) DOUBLE PRECISION   
          An estimate (a lower bound) for norm(A).</pre><p>
<pre>   KASE   (input/output) INT
          On the initial call to ZLACON, KASE should be 0.   
          On an intermediate return, KASE will be 1 or 2, indicating   
          whether X should be overwritten by A * X  or A' * X.   
          On the final return from ZLAC