relax_nlp.c
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21 /*---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8----+----9----+----0----+----1----+----2*/
54 /** solving process initialization method of relaxator (called when branch and bound process is about to begin) */
62 /** solving process deinitialization method of relaxator (called before branch and bound process data is freed) */
85 if( !SCIPisNLPConstructed(scip) || SCIPinProbing(scip) || SCIPinDive(scip) || !SCIPallColsInLP(scip) || (SCIPgetNNlpis(scip) == 0) )
98 SCIP_CALL( SCIPcreateNlpiProb(scip, nlpi, nlrows, nnlrows, nlpiprob, var2idx, NULL, NULL, SCIPgetCutoffbound(scip),
100 SCIP_CALL( SCIPaddNlpiProbRows(scip, nlpi, nlpiprob, var2idx, SCIPgetLPRows(scip), SCIPgetNLPRows(scip)) );
116 SCIP_CALL( SCIPnlpiSetRealPar(nlpi, nlpiprob, SCIP_NLPPAR_FEASTOL, SCIPfeastol(scip) * FEASTOLFAC) );
117 SCIP_CALL( SCIPnlpiSetRealPar(nlpi, nlpiprob, SCIP_NLPPAR_RELOBJTOL, SCIPfeastol(scip) * RELOBJTOLFAC) );
123 /* forward solution if we solved to optimality; local optimality is enough since the NLP is convex */
137 /* store relaxation solution in original SCIP if it improves the best relaxation solution thus far */
153 SCIPdebugMsg(scip, "relax value of %s = %g in [%g,%g]\n", SCIPvarGetName(vars[i]), primal[i], lb, ub);
193 SCIP_CALL( SCIPincludeRelaxBasic(scip, &relax, RELAX_NAME, RELAX_DESC, RELAX_PRIORITY, RELAX_FREQ,
Definition: type_nlpi.h:46
Definition: type_result.h:33
SCIP_RETCODE SCIPmarkRelaxSolValid(SCIP *scip, SCIP_RELAX *relax, SCIP_Bool includeslp)
Definition: scip_var.c:2561
Definition: type_nlpi.h:51
Definition: struct_scip.h:59
Definition: type_result.h:49
internal methods for NLPI solver interfaces
Definition: struct_var.h:198
SCIP_RETCODE SCIPnlpiCreateProblem(SCIP_NLPI *nlpi, SCIP_NLPIPROBLEM **problem, const char *name)
Definition: nlpi.c:212
Definition: type_nlpi.h:47
SCIP_RETCODE SCIPnlpiSetRealPar(SCIP_NLPI *nlpi, SCIP_NLPIPROBLEM *problem, SCIP_NLPPARAM type, SCIP_Real dval)
Definition: nlpi.c:672
SCIP_RETCODE SCIPsetRelaxSolVal(SCIP *scip, SCIP_RELAX *relax, SCIP_VAR *var, SCIP_Real val)
Definition: scip_var.c:2418
SCIP_Bool SCIPisLE(SCIP *scip, SCIP_Real val1, SCIP_Real val2)
Definition: scip_numerics.c:464
Definition: struct_misc.h:128
SCIP_RETCODE SCIPsetRelaxExitsol(SCIP *scip, SCIP_RELAX *relax, SCIP_DECL_RELAXEXITSOL((*relaxexitsol)))
Definition: scip_relax.c:208
Definition: type_nlpi.h:52
SCIP_RETCODE SCIPnlpiGetSolution(SCIP_NLPI *nlpi, SCIP_NLPIPROBLEM *problem, SCIP_Real **primalvalues, SCIP_Real **consdualvalues, SCIP_Real **varlbdualvalues, SCIP_Real **varubdualvalues, SCIP_Real *objval)
Definition: nlpi.c:538
SCIP_NLPSOLSTAT SCIPnlpiGetSolstat(SCIP_NLPI *nlpi, SCIP_NLPIPROBLEM *problem)
Definition: nlpi.c:512
SCIP_RETCODE SCIPcreateNlpiProb(SCIP *scip, SCIP_NLPI *nlpi, SCIP_NLROW **nlrows, int nnlrows, SCIP_NLPIPROBLEM *nlpiprob, SCIP_HASHMAP *var2idx, SCIP_HASHMAP *nlrow2idx, SCIP_Real *nlscore, SCIP_Real cutoffbound, SCIP_Bool setobj, SCIP_Bool onlyconvex)
Definition: scip_nonlinear.c:959
Definition: type_retcode.h:33
SCIP_RETCODE SCIPgetRealParam(SCIP *scip, const char *name, SCIP_Real *value)
Definition: scip_param.c:298
SCIP_RETCODE SCIPhashmapCreate(SCIP_HASHMAP **hashmap, BMS_BLKMEM *blkmem, int mapsize)
Definition: misc.c:3013
SCIP_RETCODE SCIPincludeRelaxBasic(SCIP *scip, SCIP_RELAX **relaxptr, const char *name, const char *desc, int priority, int freq, SCIP_DECL_RELAXEXEC((*relaxexec)), SCIP_RELAXDATA *relaxdata)
Definition: scip_relax.c:94
SCIP_RETCODE SCIPnlpiSetIntPar(SCIP_NLPI *nlpi, SCIP_NLPIPROBLEM *problem, SCIP_NLPPARAM type, int ival)
Definition: nlpi.c:637
SCIP_RETCODE SCIPnlpiSolve(SCIP_NLPI *nlpi, SCIP_NLPIPROBLEM *problem)
Definition: nlpi.c:498
SCIP_RETCODE SCIPclearRelaxSolVals(SCIP *scip, SCIP_RELAX *relax)
Definition: scip_var.c:2368
Definition: type_nlpi.h:48
SCIP_RETCODE SCIPsetRelaxInitsol(SCIP *scip, SCIP_RELAX *relax, SCIP_DECL_RELAXINITSOL((*relaxinitsol)))
Definition: scip_relax.c:192
SCIP_RETCODE SCIPnlpiFreeProblem(SCIP_NLPI *nlpi, SCIP_NLPIPROBLEM **problem)
Definition: nlpi.c:225
Definition: struct_nlp.h:63
SCIP_Bool SCIPisGT(SCIP *scip, SCIP_Real val1, SCIP_Real val2)
Definition: scip_numerics.c:477
Definition: struct_relax.h:37
Definition: type_nlpi.h:62
Definition: objbenders.h:33
nlp relaxator
Definition: nlpi_all.c:47
SCIP_RETCODE SCIPaddNlpiProbRows(SCIP *scip, SCIP_NLPI *nlpi, SCIP_NLPIPROBLEM *nlpiprob, SCIP_HASHMAP *var2idx, SCIP_ROW **rows, int nrows)
Definition: scip_nonlinear.c:1342
Definition: struct_nlpi.h:35