HeurFrats.cpp File Reference

Detailed Description

fractional travelling salesman heuristic - Rounding heuristic for TSP

Author

Timo Berthold

Definition in file HeurFrats.cpp.

#include "HeurFrats.h"
#include "ProbDataTSP.h"

Go to the source code of this file.

Functions
	SCIP_DECL_HEURFREE (HeurFrats::scip_free)
	SCIP_DECL_HEURINIT (HeurFrats::scip_init)
	SCIP_DECL_HEUREXIT (HeurFrats::scip_exit)
	SCIP_DECL_HEURINITSOL (HeurFrats::scip_initsol)
	SCIP_DECL_HEUREXITSOL (HeurFrats::scip_exitsol)
	SCIP_DECL_HEUREXEC (HeurFrats::scip_exec)
	SCIP_DECL_HEURCLONE (scip::ObjCloneable *HeurFrats::clone)

Function Documentation

SCIP_DECL_HEURFREE()

SCIP_DECL_HEURFREE

(

HeurFrats::scip_free

)

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

Definition at line 49 of file HeurFrats.cpp.

References SCIP_OKAY.

SCIP_DECL_HEURINIT()

SCIP_DECL_HEURINIT

(

HeurFrats::scip_init

)

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

Definition at line 55 of file HeurFrats.cpp.

References capture_graph(), tsp::ProbDataTSP::getGraph(), NULL, SCIP_CALL, SCIP_OKAY, SCIPcreateSol(), and SCIPgetObjProbData().

SCIP_DECL_HEUREXIT()

SCIP_DECL_HEUREXIT

(

HeurFrats::scip_exit

)

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

Definition at line 75 of file HeurFrats.cpp.

References release_graph(), SCIP_CALL, SCIP_OKAY, and SCIPfreeSol().

SCIP_DECL_HEURINITSOL()

SCIP_DECL_HEURINITSOL

(

HeurFrats::scip_initsol

)

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.

Definition at line 90 of file HeurFrats.cpp.

References SCIP_OKAY.

SCIP_DECL_HEUREXITSOL()

SCIP_DECL_HEUREXITSOL

(

HeurFrats::scip_exitsol

)

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.

Definition at line 100 of file HeurFrats.cpp.

References SCIP_OKAY.

SCIP_DECL_HEUREXEC()

SCIP_DECL_HEUREXEC

(

HeurFrats::scip_exec

)

execution method of primal heuristic

Definition at line 106 of file HeurFrats.cpp.

References GraphEdge::adjac, BMSclearMemoryArray, FALSE, GraphNode::first_edge, GraphNode::id, GraphEdge::next, nnodes, NULL, SCIP_Bool, SCIP_CALL, SCIP_DIDNOTFIND, SCIP_DIDNOTRUN, SCIP_FOUNDSOL, SCIP_LPSOLSTAT_OPTIMAL, SCIP_OKAY, SCIP_Real, SCIPallocBufferArray, SCIPcreateSol(), SCIPfreeBufferArray, SCIPfreeSol(), SCIPgetLPSolstat(), SCIPgetSolVal(), SCIPhasCurrentNodeLP(), SCIPisFeasLE(), SCIPlinkLPSol(), SCIPsetSolVal(), SCIPtrySol(), SCIPvarGetUbGlobal(), TRUE, and GraphEdge::var.

SCIP_DECL_HEURCLONE()

SCIP_DECL_HEURCLONE

(

scip::ObjCloneable *HeurFrats::clone

)

clone method which will be used to copy a objective plugin

Definition at line 239 of file HeurFrats.cpp.