[Osi] (no subject)

[Horand Gassmann]

Coin (CoinMpsIO.cpp) allows several extensions to the MPS format, namely

    QUADOBJ
    SOS
    CSECTION
    BASIS

The Clp and Cbc projects have use cases for these, but I have been having trouble accessing them through the OsiClpSolverInterface.

For instance, it seems that OsiClpSolverInterface does not have a method loadQuadraticObjective(), but neither, it seems, does ClpSimplex. (Or ClpInterior, for that matter.)

Worse, when I try to

make DRIVER=testQP.cpp

I get the error message

../../../Clp/examples/testQP.cpp:31:15: error: ‘status’ was not declared in this scope

I think that entire if(status) statement should be moved inside the  construct #if defined(SAMPLEDIR), but even that does not help me much.

My main question is this: Which of the MPS extensions listed above should I be able to access through OsiClpSolverInterface, and how?

Thanks so much.

gus gassmann

-------------------------------------------------------

Horand I. Gassmann, Professor

Kenneth C. Rowe School of Business, Dalhousie University
6100 University Avenue, PO Box 15000
Halifax, Nova Scotia, Canada, B3H 4R2
ph. (902) 494-1844
fax (902) 494-1107

http://myweb.dal.ca/gassmann/