=penlab(penm);
 [alx,aldx,alddx] = setuptestpoint(prob,'datafiles/pensdpa_truss1.dcf','pensdp');
 prob.eval_alx();
 % alx vs. prob.ALx
 alx
 prob.ALx</pre><p>For PENNLP problems:</p><pre> penm=nlp_define('../../problems/ampl-nl/camshape100.nl');
 prob=penlab(penm);
 [alx,aldx,alddx] = setuptestpoint(prob,'datafiles/pennlp_camshape100_a.dcf','pennlp');
 prob.eval_alx();
 prob.ALx
 alx</pre><p><b>Other problems stored in ./datafiles:</b></p>
         <p>truss1 - very small matrices, no inequalities</p><pre>sd