Changes between Version 2 and Version 4 of Ticket #18733


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Timestamp:
06/22/15 19:32:53 (6 years ago)
Author:
mkoeppe
Comment:

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  • Ticket #18733 – Description

    v2 v4  
    22
    33The Sage interface should, of course, be designed to work consistently across all solvers. There are some subtleties here. Best to be compatible with a library that has already sorted most of it out: In the COIN open solver interface, there are the functions [https://projects.coin-or.org/Osi/browser/trunk/Osi/src/Osi/OsiSolverInterface.hpp#L1860 getBInvARow], getBInvRow, getBInvACol, getBInvCol.
    4 Unfortunately these functions do not seem to be implemented in Osi's GLPK backend; so one needs to use one of Osi more complete backends such as CPLEX to find the precise definition.
     4Unfortunately these functions do not seem to be implemented in Osi's GLPK backend; so one needs to use one of Osi more complete backends such as CPLEX or CLP to find the precise definition.
    55
    6 #18732 adds the necessary backend functions for the GLPK backend. This kind of information is available in every solver.
     6#18732 adds the necessary backend functions for the GLPK backend.
     7#18763 adds the necessary backend functions for the COIN (CBC/CLP) backend.
     8
     9This kind of information is available in every solver.
    710
    811See also #18688.