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OS/Ipopt gives wrong sign on constraint dual values #11

Closed svigerske closed 5 years ago

svigerske commented 5 years ago

Issue created by migration from Trac.

Original creator: @svigerske

Original creation time: 2009-11-02 17:19:07

Assignee: somebody

Version:

Hi,

the sign of the dual values returned from the OS interface to Ipopt is flipped compared to those from Cbc, for example.

Note that the point lambda given in finalize_solution need to be negated.

I used OS/stable/2.0

Stefan

svigerske commented 5 years ago

Comment by kmartin created at 2009-11-05 06:35:47

Resolution: fixed