Scippy

    SCIP

    Solving Constraint Integer Programs

    Data Fields
    SCIP_RowSolVals Struct Reference

    Detailed Description

    collected values of a row which depend on the LP solution We store these values in each row to recover the LP solution at start of diving or probing mode, say, without having to resolve the LP. We do not store the dualfarkas value since we expect a node with infeasible LP to be pruned anyway. In this unlikely case, we have to resolve the LP.

    Definition at line 106 of file struct_lp.h.

    #include <struct_lp.h>

    Data Fields

    SCIP_Real dualsol
     
    SCIP_Real activity
     
    unsigned int basisstatus:2
     

    Field Documentation

    ◆ dualsol

    SCIP_Real SCIP_RowSolVals::dualsol

    dual solution value in LP, is 0 if row is not in LP

    Definition at line 108 of file struct_lp.h.

    Referenced by rowRestoreSolVals(), rowStoreSolVals(), and SCIPconflictAnalyzeLP().

    ◆ activity

    SCIP_Real SCIP_RowSolVals::activity

    row activity value in LP, or SCIP_INVALID if not yet calculated

    Definition at line 109 of file struct_lp.h.

    Referenced by rowRestoreSolVals(), rowStoreSolVals(), and SCIPconflictAnalyzeLP().

    ◆ basisstatus

    unsigned int SCIP_RowSolVals::basisstatus

    basis status of row in last LP solution, invalid for non-LP rows

    Definition at line 110 of file struct_lp.h.

    Referenced by rowRestoreSolVals(), rowStoreSolVals(), and SCIPconflictAnalyzeLP().