Xpress: sos constraint do not support linear expression
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Bug
Solver: MathOpt
Solver: Xpress
- Dominant language
- C++
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Description
like gurobi, xpress solver do not support natively linear sos contraint...
But contrary to gurobi_solver.cc which introduce temp variable to make it work out of the box, xpress did not
ref:
* https://www.fico.com/fico-xpress-optimization/docs/latest/solver/optimizer/HTML/xprscxx/classxpress_1_1objects_1_1SOS.html
* https://www.fico.com/fico-xpress-optimization/docs/latest/mosel/mosel_lang/dhtml/makesos1.html
* https://docs.gurobi.com/projects/optimizer/en/current/reference/c/model.html#c.GRBaddsos
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