heur_trivialnegation.c
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31/*---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8----+----9----+----0----+----1----+----2*/
48#define HEUR_DESC "negate solution entries if an objective coefficient changes the sign, enters or leaves the objective."
150 /* check if variable entered or left the objective, or if its objective coefficient changed sign */
158 SCIPdebugMsg(scip, "check variable <%s> which has %schanged from %g to %g\n", SCIPvarGetName(transvar), changed ? "" : "not ", oldcoef, newcoef);
SCIP_RETCODE SCIPincludeHeurTrivialnegation(SCIP *scip)
Definition: heur_trivialnegation.c:258
SCIP_RETCODE SCIPsetHeurCopy(SCIP *scip, SCIP_HEUR *heur, SCIP_DECL_HEURCOPY((*heurcopy)))
Definition: scip_heur.c:162
SCIP_RETCODE SCIPincludeHeurBasic(SCIP *scip, SCIP_HEUR **heur, const char *name, const char *desc, char dispchar, int priority, int freq, int freqofs, int maxdepth, SCIP_HEURTIMING timingmask, SCIP_Bool usessubscip, SCIP_DECL_HEUREXEC((*heurexec)), SCIP_HEURDATA *heurdata)
Definition: scip_heur.c:117
SCIP_RETCODE SCIPgetReoptOldObjCoef(SCIP *scip, SCIP_VAR *var, int run, SCIP_Real *objcoef)
Definition: scip_solve.c:3158
SCIP_RETCODE SCIPcreateSol(SCIP *scip, SCIP_SOL **sol, SCIP_HEUR *heur)
Definition: scip_sol.c:184
SCIP_RETCODE SCIPprintSol(SCIP *scip, SCIP_SOL *sol, FILE *file, SCIP_Bool printzeros)
Definition: scip_sol.c:1631
SCIP_RETCODE SCIPtrySol(SCIP *scip, SCIP_SOL *sol, SCIP_Bool printreason, SCIP_Bool completely, SCIP_Bool checkbounds, SCIP_Bool checkintegrality, SCIP_Bool checklprows, SCIP_Bool *stored)
Definition: scip_sol.c:2954
SCIP_RETCODE SCIPsetSolVal(SCIP *scip, SCIP_SOL *sol, SCIP_VAR *var, SCIP_Real val)
Definition: scip_sol.c:1077
SCIP_Real SCIPgetSolVal(SCIP *scip, SCIP_SOL *sol, SCIP_VAR *var)
Definition: scip_sol.c:1217
SCIP_Real SCIPgetSolTransObj(SCIP *scip, SCIP_SOL *sol)
Definition: scip_sol.c:1347
SCIP_Bool SCIPisFeasEQ(SCIP *scip, SCIP_Real val1, SCIP_Real val2)
Definition: scip_numerics.c:780
SCIP_Bool SCIPisFeasLT(SCIP *scip, SCIP_Real val1, SCIP_Real val2)
Definition: scip_numerics.c:793
static SCIP_DECL_HEURCOPY(heurCopyTrivialnegation)
Definition: heur_trivialnegation.c:63
static SCIP_DECL_HEUREXEC(heurExecTrivialnegation)
Definition: heur_trivialnegation.c:78
trivialnegation primal heuristic
Definition: objbenders.h:44
public methods for primal heuristics
public methods for message output
public methods for primal CIP solutions
public methods for problem variables
public methods for primal heuristic plugins and divesets
public methods for message handling
public methods for numerical tolerances
public methods for global and local (sub)problems
public methods for solutions
public solving methods
public methods for querying solving statistics
Definition: struct_heur.h:98
Definition: struct_sol.h:74
Definition: struct_var.h:208
Definition: struct_scip.h:70