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<DIV>Hi all,</DIV>
<DIV>I noticed there is a new_x flag in every eval_* function,the Ipopt's document said about the new_x flag:<BR><BR>The boolean variable new_x will be false if the last call to any of the evaluation methods(eval_*) used<BR>the same x values.This can be helpful when users have efficient implementations that calculate multiple<BR>outputs at once. Ipopt internally caches results from the TNLP and generally,this flag can be ignored.</DIV>
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<DIV>However, I don't understand the flag very clearly.I want to understand the meaning of new_x flag and how I should use this flag in eval_* function. Anyone one can give me some <SPAN class="keyword">explanations </SPAN>in detail? Thank you very much in advance!<BR></DIV><br><br><span title="neteasefooter"/></span>