equivalent in <tt>PMI</tt>.
         </p>
         <p>The meaning of the last (optional) argument <tt>pointchanged</tt>: if <tt>pointchanged = 1</tt> then the values of <tt>x,Y</tt> have changed and this call is the first one supplying the new values; if <tt>pointchanged = 0</tt> we supply the "old" point.
         </p>
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         <h2>PENlab and YALMIP<a name="7"></a></h2>
         <p>PENlab can be used to solve LMI and BMI problems generat