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<p>
<pre>
   Purpose   
   =======</pre><p>
<pre>   SLACON estimates the 1-norm of a square matrix A.   
   Reverse communication is used for evaluating matrix-vector products.</pre><p>
<pre>   Arguments   
   =========</pre><p>
<pre>   N      (input) INT
          The order of the matrix.  N &gt;= 1.</pre><p>
<pre>   V      (workspace) FLOAT PRECISION array, dimension (N)   
          On the final return, V = A*W,  where  EST = norm(V)/norm(W)   
   