Scippy

    SCIP

    Solving Constraint Integer Programs

    Public Member Functions
    tsp::HeurFrats Class Reference

    Detailed Description

    C++ rounding heuristic for TSP

    Definition at line 43 of file HeurFrats.h.

    #include <HeurFrats.h>

    Public Member Functions

     HeurFrats (SCIP *scip)
     
    virtual ~HeurFrats ()
     
    virtual SCIP_DECL_HEURFREE (scip_free)
     
    virtual SCIP_DECL_HEURINIT (scip_init)
     
    virtual SCIP_DECL_HEUREXIT (scip_exit)
     
    virtual SCIP_DECL_HEURINITSOL (scip_initsol)
     
    virtual SCIP_DECL_HEUREXITSOL (scip_exitsol)
     
    virtual SCIP_DECL_HEUREXEC (scip_exec)
     
    virtual SCIP_DECL_HEURCLONE (ObjCloneable *clone)
     
    virtual SCIP_DECL_HEURISCLONEABLE (iscloneable)
     
    - Public Member Functions inherited from scip::ObjHeur
     ObjHeur (SCIP *scip, const char *name, const char *desc, char dispchar, int priority, int freq, int freqofs, int maxdepth, SCIP_HEURTIMING timingmask, SCIP_Bool usessubscip)
     
     ObjHeur (const ObjHeur &o)
     
     ObjHeur (ObjHeur &&o)
     
    virtual ~ObjHeur ()
     
    ObjHeur & operator= (const ObjHeur &o)=delete
     
    ObjHeur & operator= (ObjHeur &&o)=delete
     
    virtual SCIP_DECL_HEURFREE (scip_free)
     
    virtual SCIP_DECL_HEURINIT (scip_init)
     
    virtual SCIP_DECL_HEUREXIT (scip_exit)
     
    virtual SCIP_DECL_HEURINITSOL (scip_initsol)
     
    virtual SCIP_DECL_HEUREXITSOL (scip_exitsol)
     
    virtual SCIP_DECL_HEUREXEC (scip_exec)=0
     
    - Public Member Functions inherited from scip::ObjCloneable
    virtual ~ObjCloneable ()
     
    ObjCloneable & operator= (const ObjCloneable &o)=delete
     
    ObjCloneable & operator= (ObjCloneable &&o)=delete
     
    virtual SCIP_DECL_OBJCLONEABLECLONE (ObjCloneable *clone)
     
    virtual SCIP_DECL_OBJCLONEABLEISCLONEABLE (iscloneable)
     

    Additional Inherited Members

    - Data Fields inherited from scip::ObjHeur
    SCIP * scip_
     
    char * scip_name_
     
    char * scip_desc_
     
    const char scip_dispchar_
     
    const int scip_priority_
     
    const int scip_freq_
     
    const int scip_freqofs_
     
    const int scip_maxdepth_
     
    const SCIP_HEURTIMING scip_timingmask_
     
    const SCIP_Bool scip_usessubscip_
     

    Constructor & Destructor Documentation

    ◆ HeurFrats()

    tsp::HeurFrats::HeurFrats ( SCIP *  scip)
    		inline

    default constructor

    Definition at line 50 of file HeurFrats.h.

    ◆ ~HeurFrats()

    virtual tsp::HeurFrats::~HeurFrats ( )
    		inlinevirtual

    destructor

    Definition at line 61 of file HeurFrats.h.

    Member Function Documentation

    ◆ SCIP_DECL_HEURFREE()

    virtual tsp::HeurFrats::SCIP_DECL_HEURFREE ( scip_free  )
    		virtual

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

    Reimplemented from scip::ObjHeur.

    ◆ SCIP_DECL_HEURINIT()

    virtual tsp::HeurFrats::SCIP_DECL_HEURINIT ( scip_init  )
    		virtual

    initialization method of primal heuristic (called after problem was transformed)

    Reimplemented from scip::ObjHeur.

    ◆ SCIP_DECL_HEUREXIT()

    virtual tsp::HeurFrats::SCIP_DECL_HEUREXIT ( scip_exit  )
    		virtual

    deinitialization method of primal heuristic (called before transformed problem is freed)

    Reimplemented from scip::ObjHeur.

    ◆ SCIP_DECL_HEURINITSOL()

    virtual tsp::HeurFrats::SCIP_DECL_HEURINITSOL ( scip_initsol  )
    		virtual

    solving process initialization method of primal heuristic (called when branch and bound process is about to begin)

    This method is called when the presolving was finished and the branch and bound process is about to begin. The primal heuristic may use this call to initialize its branch and bound specific data.

    Reimplemented from scip::ObjHeur.

    ◆ SCIP_DECL_HEUREXITSOL()

    virtual tsp::HeurFrats::SCIP_DECL_HEUREXITSOL ( scip_exitsol  )
    		virtual

    solving process deinitialization method of primal heuristic (called before branch and bound process data is freed)

    This method is called before the branch and bound process is freed. The primal heuristic should use this call to clean up its branch and bound data.

    Reimplemented from scip::ObjHeur.

    ◆ SCIP_DECL_HEUREXEC()

    virtual tsp::HeurFrats::SCIP_DECL_HEUREXEC ( scip_exec  )
    		virtual

    execution method of primal heuristic

    Searches for feasible primal solutions. The method is called in the node processing loop.

    possible return values for *result:

    • SCIP_FOUNDSOL : at least one feasible primal solution was found
    • SCIP_DIDNOTFIND : the heuristic searched, but did not find a feasible solution
    • SCIP_DIDNOTRUN : the heuristic was skipped
    • SCIP_DELAYED : the heuristic was skipped, but should be called again as soon as possible, disregarding its frequency

    Implements scip::ObjHeur.

    ◆ SCIP_DECL_HEURCLONE()

    virtual tsp::HeurFrats::SCIP_DECL_HEURCLONE ( ObjCloneable *  clone)
    		virtual

    clone method which will be used to copy a objective plugin

    ◆ SCIP_DECL_HEURISCLONEABLE()

    virtual tsp::HeurFrats::SCIP_DECL_HEURISCLONEABLE ( iscloneable  )
    		inlinevirtual

    returns whether the objective plugin is copyable

    Definition at line 106 of file HeurFrats.h.

    References TRUE.