Scippy

    SCIP

    Solving Constraint Integer Programs

    Public Member Functions | Data Fields
    SCIP_Presol Struct Reference

    Detailed Description

    presolver

    Definition at line 46 of file struct_presol.h.

    #include <struct_presol.h>

    Public Member Functions

     SCIP_DECL_PRESOLCOPY ((*presolcopy))
     
     SCIP_DECL_PRESOLFREE ((*presolfree))
     
     SCIP_DECL_PRESOLINIT ((*presolinit))
     
     SCIP_DECL_PRESOLEXIT ((*presolexit))
     
     SCIP_DECL_PRESOLINITPRE ((*presolinitpre))
     
     SCIP_DECL_PRESOLEXITPRE ((*presolexitpre))
     
     SCIP_DECL_PRESOLEXEC ((*presolexec))
     

    Data Fields

    char * name
     
    char * desc
     
    SCIP_PRESOLDATA * presoldata
     
    SCIP_CLOCK * setuptime
     
    SCIP_CLOCK * presolclock
     
    int priority
     
    int maxrounds
     
    int lastnfixedvars
     
    int lastnaggrvars
     
    int lastnchgvartypes
     
    int lastnchgbds
     
    int lastnaddholes
     
    int lastndelconss
     
    int lastnaddconss
     
    int lastnupgdconss
     
    int lastnchgcoefs
     
    int lastnchgsides
     
    int nfixedvars
     
    int naggrvars
     
    int nchgvartypes
     
    int nchgbds
     
    int naddholes
     
    int ndelconss
     
    int naddconss
     
    int nupgdconss
     
    int nchgcoefs
     
    int nchgsides
     
    int ncalls
     
    SCIP_Bool initialized
     
    SCIP_Bool exact
     
    SCIP_PRESOLTIMING timing
     

    Member Function Documentation

    ◆ SCIP_DECL_PRESOLCOPY()

    SCIP_Presol::SCIP_DECL_PRESOLCOPY ( *  presolcopy)

    copy method of presolver or NULL if you don't want to copy your plugin into sub-SCIPs

    ◆ SCIP_DECL_PRESOLFREE()

    SCIP_Presol::SCIP_DECL_PRESOLFREE ( *  presolfree)

    destructor of presolver to free user data (called when SCIP is exiting)

    ◆ SCIP_DECL_PRESOLINIT()

    SCIP_Presol::SCIP_DECL_PRESOLINIT ( *  presolinit)

    initialization method of presolver (called after problem was transformed)

    ◆ SCIP_DECL_PRESOLEXIT()

    SCIP_Presol::SCIP_DECL_PRESOLEXIT ( *  presolexit)

    deinitialization method of presolver (called before transformed problem is freed)

    ◆ SCIP_DECL_PRESOLINITPRE()

    SCIP_Presol::SCIP_DECL_PRESOLINITPRE ( *  presolinitpre)

    presolving initialization method of presolver (called when presolving is about to begin)

    ◆ SCIP_DECL_PRESOLEXITPRE()

    SCIP_Presol::SCIP_DECL_PRESOLEXITPRE ( *  presolexitpre)

    presolving deinitialization method of presolver (called after presolving has been finished)

    ◆ SCIP_DECL_PRESOLEXEC()

    SCIP_Presol::SCIP_DECL_PRESOLEXEC ( *  presolexec)

    execution method of presolver

    Field Documentation

    ◆ name

    char* SCIP_Presol::name

    name of presolver

    Definition at line 48 of file struct_presol.h.

    Referenced by SCIPpresolExec(), SCIPpresolExit(), SCIPpresolGetName(), and SCIPpresolInit().

    ◆ desc

    char* SCIP_Presol::desc

    description of presolver

    Definition at line 49 of file struct_presol.h.

    Referenced by SCIPpresolGetDesc().

    ◆ presoldata

    SCIP_PRESOLDATA* SCIP_Presol::presoldata

    presolver data

    Definition at line 57 of file struct_presol.h.

    Referenced by SCIPpresolGetData(), and SCIPpresolSetData().

    ◆ setuptime

    SCIP_CLOCK* SCIP_Presol::setuptime

    time spend for setting up this presolver for the next stages

    Definition at line 58 of file struct_presol.h.

    Referenced by SCIPcopyConcurrentSolvingStats(), SCIPpresolEnableOrDisableClocks(), SCIPpresolExit(), SCIPpresolExitpre(), SCIPpresolGetSetupTime(), SCIPpresolInit(), and SCIPpresolInitpre().

    ◆ presolclock

    SCIP_CLOCK* SCIP_Presol::presolclock

    presolving time

    Definition at line 59 of file struct_presol.h.

    Referenced by SCIPcopyConcurrentSolvingStats(), SCIPpresolEnableOrDisableClocks(), SCIPpresolExec(), SCIPpresolGetTime(), and SCIPpresolInit().

    ◆ priority

    int SCIP_Presol::priority

    priority of the presolver

    Definition at line 60 of file struct_presol.h.

    Referenced by SCIPpresolGetPriority(), and SCIPpresolSetPriority().

    ◆ maxrounds

    int SCIP_Presol::maxrounds

    maximal number of presolving rounds the presolver participates in (-1: no limit)

    Definition at line 61 of file struct_presol.h.

    Referenced by SCIPpresolExec(), and SCIPpresolGetMaxrounds().

    ◆ lastnfixedvars

    int SCIP_Presol::lastnfixedvars

    number of variables fixed before the last call to the presolver

    Definition at line 62 of file struct_presol.h.

    Referenced by SCIPpresolExec(), SCIPpresolInit(), and SCIPpresolInitpre().

    ◆ lastnaggrvars

    int SCIP_Presol::lastnaggrvars

    number of variables aggregated before the last call to the presolver

    Definition at line 63 of file struct_presol.h.

    Referenced by SCIPpresolExec(), SCIPpresolInit(), and SCIPpresolInitpre().

    ◆ lastnchgvartypes

    int SCIP_Presol::lastnchgvartypes

    number of variable type changes before the last call to the presolver

    Definition at line 64 of file struct_presol.h.

    Referenced by SCIPpresolExec(), SCIPpresolInit(), and SCIPpresolInitpre().

    ◆ lastnchgbds

    int SCIP_Presol::lastnchgbds

    number of variable bounds tightened before the last call to the presolver

    Definition at line 65 of file struct_presol.h.

    Referenced by SCIPpresolExec(), SCIPpresolInit(), and SCIPpresolInitpre().

    ◆ lastnaddholes

    int SCIP_Presol::lastnaddholes

    number of domain holes added before the last call to the presolver

    Definition at line 66 of file struct_presol.h.

    Referenced by SCIPpresolExec(), SCIPpresolInit(), and SCIPpresolInitpre().

    ◆ lastndelconss

    int SCIP_Presol::lastndelconss

    number of deleted constraints before the last call to the presolver

    Definition at line 67 of file struct_presol.h.

    Referenced by SCIPpresolExec(), SCIPpresolInit(), and SCIPpresolInitpre().

    ◆ lastnaddconss

    int SCIP_Presol::lastnaddconss

    number of added constraints before the last call to the presolver

    Definition at line 68 of file struct_presol.h.

    Referenced by SCIPpresolExec(), SCIPpresolInit(), and SCIPpresolInitpre().

    ◆ lastnupgdconss

    int SCIP_Presol::lastnupgdconss

    number of upgraded constraints before the last call to the presolver

    Definition at line 69 of file struct_presol.h.

    Referenced by SCIPpresolExec(), SCIPpresolInit(), and SCIPpresolInitpre().

    ◆ lastnchgcoefs

    int SCIP_Presol::lastnchgcoefs

    number of changed coefficients before the last call to the presolver

    Definition at line 70 of file struct_presol.h.

    Referenced by SCIPpresolExec(), SCIPpresolInit(), and SCIPpresolInitpre().

    ◆ lastnchgsides

    int SCIP_Presol::lastnchgsides

    number of changed left or right hand sides before the last call

    Definition at line 71 of file struct_presol.h.

    Referenced by SCIPpresolExec(), SCIPpresolInit(), and SCIPpresolInitpre().

    ◆ nfixedvars

    int SCIP_Presol::nfixedvars

    total number of variables fixed by this presolver

    Definition at line 72 of file struct_presol.h.

    Referenced by SCIPcopyConcurrentSolvingStats(), SCIPpresolExec(), SCIPpresolGetNFixedVars(), and SCIPpresolInit().

    ◆ naggrvars

    int SCIP_Presol::naggrvars

    total number of variables aggregated by this presolver

    Definition at line 73 of file struct_presol.h.

    Referenced by SCIPcopyConcurrentSolvingStats(), SCIPpresolExec(), SCIPpresolGetNAggrVars(), and SCIPpresolInit().

    ◆ nchgvartypes

    int SCIP_Presol::nchgvartypes

    total number of variable type changes by this presolver

    Definition at line 74 of file struct_presol.h.

    Referenced by SCIPcopyConcurrentSolvingStats(), SCIPpresolExec(), SCIPpresolGetNChgVarTypes(), and SCIPpresolInit().

    ◆ nchgbds

    int SCIP_Presol::nchgbds

    total number of variable bounds tightened by this presolver

    Definition at line 75 of file struct_presol.h.

    Referenced by SCIPcopyConcurrentSolvingStats(), SCIPpresolExec(), SCIPpresolGetNChgBds(), and SCIPpresolInit().

    ◆ naddholes

    int SCIP_Presol::naddholes

    total number of domain holes added by this presolver

    Definition at line 76 of file struct_presol.h.

    Referenced by SCIPcopyConcurrentSolvingStats(), SCIPpresolExec(), SCIPpresolGetNAddHoles(), and SCIPpresolInit().

    ◆ ndelconss

    int SCIP_Presol::ndelconss

    total number of deleted constraints by this presolver

    Definition at line 77 of file struct_presol.h.

    Referenced by SCIPcopyConcurrentSolvingStats(), SCIPpresolExec(), SCIPpresolGetNDelConss(), and SCIPpresolInit().

    ◆ naddconss

    int SCIP_Presol::naddconss

    total number of added constraints by this presolver

    Definition at line 78 of file struct_presol.h.

    Referenced by SCIPcopyConcurrentSolvingStats(), SCIPpresolExec(), SCIPpresolGetNAddConss(), and SCIPpresolInit().

    ◆ nupgdconss

    int SCIP_Presol::nupgdconss

    total number of upgraded constraints by this presolver

    Definition at line 79 of file struct_presol.h.

    Referenced by SCIPcopyConcurrentSolvingStats(), SCIPpresolExec(), SCIPpresolGetNUpgdConss(), and SCIPpresolInit().

    ◆ nchgcoefs

    int SCIP_Presol::nchgcoefs

    total number of changed coefficients by this presolver

    Definition at line 80 of file struct_presol.h.

    Referenced by SCIPcopyConcurrentSolvingStats(), SCIPpresolExec(), SCIPpresolGetNChgCoefs(), and SCIPpresolInit().

    ◆ nchgsides

    int SCIP_Presol::nchgsides

    total number of changed left or right hand sides by this presolver

    Definition at line 81 of file struct_presol.h.

    Referenced by SCIPcopyConcurrentSolvingStats(), SCIPpresolExec(), SCIPpresolGetNChgSides(), and SCIPpresolInit().

    ◆ ncalls

    int SCIP_Presol::ncalls

    number of times the presolver was called and tried to find reductions

    Definition at line 82 of file struct_presol.h.

    Referenced by SCIPcopyConcurrentSolvingStats(), SCIPpresolExec(), SCIPpresolGetNCalls(), and SCIPpresolInit().

    ◆ initialized

    SCIP_Bool SCIP_Presol::initialized

    is presolver initialized?

    Definition at line 83 of file struct_presol.h.

    Referenced by SCIPpresolExit(), SCIPpresolInit(), and SCIPpresolIsInitialized().

    ◆ exact

    SCIP_Bool SCIP_Presol::exact

    is the presolver safe to be used in exact solving mode?

    Definition at line 84 of file struct_presol.h.

    Referenced by SCIPpresolExec(), and SCIPpresolMarkExact().

    ◆ timing

    SCIP_PRESOLTIMING SCIP_Presol::timing

    timing of the presolver

    Definition at line 85 of file struct_presol.h.

    Referenced by SCIPpresolExec(), SCIPpresolGetTiming(), and SCIPpresolSetTiming().