Hi. How to use the derivative check with the C++ interface? The documentation of the interface seems to not mention that: https://www.coin-or.org/Ipopt/documentation/node23.html Thank you. -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://list.coin-or.org/pipermail/ipopt/attachments/20181021/6fbfba9b/attachment.html>