heur_trivialnegation.c
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22 /*---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8----+----9----+----0----+----1----+----2*/
39 #define HEUR_DESC "negate solution entries if an objective coefficient changes the sign, enters or leaves the objective."
141 /* check if variable entered or left the objective, or if its objective coefficient changed sign */
149 SCIPdebugMsg(scip, "check variable <%s> which has %schanged from %g to %g\n", SCIPvarGetName(transvar), changed ? "" : "not ", oldcoef, newcoef);
Definition: type_result.h:33
Definition: type_result.h:47
trivialnegation primal heuristic
SCIP_RETCODE SCIPsetSolVal(SCIP *scip, SCIP_SOL *sol, SCIP_VAR *var, SCIP_Real val)
Definition: scip_sol.c:1213
Definition: struct_scip.h:59
static SCIP_DECL_HEURCOPY(heurCopyTrivialnegation)
Definition: heur_trivialnegation.c:54
SCIP_Real SCIPgetSolVal(SCIP *scip, SCIP_SOL *sol, SCIP_VAR *var)
Definition: scip_sol.c:1353
public solving methods
Definition: struct_var.h:198
Definition: type_var.h:53
public methods for problem variables
static SCIP_DECL_HEUREXEC(heurExecTrivialnegation)
Definition: heur_trivialnegation.c:69
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:3126
public methods for numerical tolerances
SCIP_RETCODE SCIPcreateSol(SCIP *scip, SCIP_SOL **sol, SCIP_HEUR *heur)
Definition: scip_sol.c:320
public methods for querying solving statistics
Definition: struct_sol.h:64
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:108
Definition: type_result.h:35
SCIP_Bool SCIPisFeasEQ(SCIP *scip, SCIP_Real val1, SCIP_Real val2)
Definition: scip_numerics.c:773
Definition: type_retcode.h:33
public methods for primal CIP solutions
Definition: struct_heur.h:88
public methods for primal heuristic plugins and divesets
SCIP_RETCODE SCIPgetReoptOldObjCoef(SCIP *scip, SCIP_VAR *var, int run, SCIP_Real *objcoef)
Definition: scip_solve.c:3171
public methods for solutions
SCIP_RETCODE SCIPsetHeurCopy(SCIP *scip, SCIP_HEUR *heur, SCIP_DECL_HEURCOPY((*heurcopy)))
Definition: scip_heur.c:153
SCIP_Bool SCIPisFeasLT(SCIP *scip, SCIP_Real val1, SCIP_Real val2)
Definition: scip_numerics.c:786
public methods for message output
SCIP_Real SCIPgetSolTransObj(SCIP *scip, SCIP_SOL *sol)
Definition: scip_sol.c:1483
SCIP_RETCODE SCIPprintSol(SCIP *scip, SCIP_SOL *sol, FILE *file, SCIP_Bool printzeros)
Definition: scip_sol.c:1767
public methods for message handling
public methods for primal heuristics
SCIP_RETCODE SCIPincludeHeurTrivialnegation(SCIP *scip)
Definition: heur_trivialnegation.c:249
Definition: objbenders.h:33
public methods for global and local (sub)problems