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<p class=MsoNormal><font size=2 color=black face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:black'>Hi guys,</span></font></p>
<p class=MsoNormal><font size=2 color=black face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:black'> </span></font></p>
<p class=MsoNormal><font size=2 color=black face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:black'>It doesn’t seem possible to either
initialize or change the value of dual variables during the optimization in the
C++ implementation of IPOPT. Seems all the callbacks have a <i><span
style='font-style:italic'>const</span></i> in the signature, and the code does
not seem to provide hooks to influence the iterations between evaluations. Is
this correct? Are there any workarounds you can suggest?</span></font></p>
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10.0pt;font-family:Arial;color:black'> </span></font></p>
<p class=MsoNormal><font size=2 color=black face=Arial><span style='font-size:
10.0pt;font-family:Arial;color:black'>Thanks,</span></font></p>
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10.0pt;font-family:Arial;color:black'> </span></font></p>
<p class=MsoAutoSig><font size=2 color=black face=Arial><span lang=PT-BR
style='font-size:10.0pt;font-family:Arial;color:black'>--Ivan.</span></font></p>
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lang=PT-BR style='font-size:12.0pt;color:black'> </span></font></p>
<p class=MsoAutoSig><font size=2 color=black face=Courier><span lang=PT-BR
style='font-size:10.0pt;font-family:Courier;color:black'>----------------------------</span></font></p>
<p class=MsoAutoSig><font size=2 color=black face=Courier><span lang=PT-BR
style='font-size:10.0pt;font-family:Courier;color:black'>Ivan B. Oliveira</span></font></p>
<p class=MsoAutoSig><font size=2 color=black face=Courier><span lang=PT-BR
style='font-size:10.0pt;font-family:Courier;color:black'>SC12-205</span></font></p>
<p class=MsoAutoSig><font size=2 color=black face=Courier><span
style='font-size:10.0pt;font-family:Courier;color:black'>(408)765-0584</span></font></p>
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