nlp.c File Reference

Detailed Description

NLP management methods.

Author

Thorsten Gellermann

Stefan Vigerske

In NLP management, we have to distinguish between the current NLP and the NLPI problem stored in the NLP solver. All NLP methods affect the current NLP only. Before solving the current NLP with the NLP solver, the NLP solvers data has to be updated to the current NLP with a call to SCIPnlpFlush().

Definition in file nlp.c.

#include "scip/nlpi.h"
#include "scip/pub_expr.h"
#include "scip/expr.h"
#include "scip/expr_varidx.h"
#include "scip/clock.h"
#include "scip/event.h"
#include "scip/nlp.h"
#include "scip/primal.h"
#include "scip/pub_event.h"
#include "scip/pub_lp.h"
#include "scip/pub_message.h"
#include "scip/pub_misc.h"
#include "scip/pub_misc_sort.h"
#include "scip/pub_nlp.h"
#include "scip/pub_var.h"
#include "scip/set.h"
#include "scip/sol.h"
#include "scip/struct_nlp.h"
#include "scip/struct_scip.h"
#include "scip/struct_mem.h"
#include "scip/struct_set.h"
#include "scip/struct_stat.h"
#include "scip/var.h"
#include <string.h>

Go to the source code of this file.

Macros
#define	EVENTHDLR_NAME   "nlpEventHdlr"
#define	EVENTHDLR_DESC   "handles all events necessary for maintaining NLP data"
#define	ADDNAMESTONLPI   0

Functions
static	SCIP_DECL_EVENTEXEC (eventExecNlp)
static SCIP_RETCODE	nlpRowChanged (SCIP_NLP *nlp, SCIP_SET *set, SCIP_STAT *stat, SCIP_NLROW *nlrow)
static SCIP_RETCODE	nlrowLinearCoefChanged (SCIP_NLROW *nlrow, SCIP_SET *set, SCIP_STAT *stat, SCIP_VAR *var, SCIP_Real coef, SCIP_NLP *nlp)
static	SCIP_DECL_EXPR_MAPEXPR (mapvar2varidx)
static SCIP_RETCODE	nlrowExprChanged (SCIP_NLROW *nlrow, BMS_BLKMEM *blkmem, SCIP_SET *set, SCIP_STAT *stat, SCIP_NLP *nlp)
static SCIP_RETCODE	nlrowSideChanged (SCIP_NLROW *nlrow, SCIP_SET *set, SCIP_STAT *stat, SCIP_NLP *nlp)
static SCIP_RETCODE	nlrowConstantChanged (SCIP_NLROW *nlrow, SCIP_SET *set, SCIP_STAT *stat, SCIP_NLP *nlp)
static void	nlrowAddToStat (SCIP_NLP *nlp, SCIP_SET *set, SCIP_NLROW *nlrow, int incr)
static void	nlrowSortLinear (SCIP_NLROW *nlrow)
static int	nlrowSearchLinearCoef (SCIP_NLROW *nlrow, SCIP_VAR *var)
static void	nlrowMoveLinearCoef (SCIP_NLROW *nlrow, int oldpos, int newpos)
static SCIP_RETCODE	nlrowAddLinearCoef (SCIP_NLROW *nlrow, BMS_BLKMEM *blkmem, SCIP_SET *set, SCIP_STAT *stat, SCIP_NLP *nlp, SCIP_VAR *var, SCIP_Real coef)
static SCIP_RETCODE	nlrowDelLinearCoefPos (SCIP_NLROW *nlrow, SCIP_SET *set, SCIP_STAT *stat, SCIP_NLP *nlp, int pos)
static SCIP_RETCODE	nlrowChgLinearCoefPos (SCIP_NLROW *nlrow, SCIP_SET *set, SCIP_STAT *stat, SCIP_NLP *nlp, int pos, SCIP_Real coef)
static SCIP_RETCODE	nlrowCalcActivityBounds (SCIP_NLROW *nlrow, BMS_BLKMEM *blkmem, SCIP_SET *set, SCIP_STAT *stat)
static SCIP_RETCODE	nlrowRemoveFixedLinearCoefPos (SCIP_NLROW *nlrow, BMS_BLKMEM *blkmem, SCIP_SET *set, SCIP_STAT *stat, SCIP_NLP *nlp, int pos)
static SCIP_RETCODE	nlrowRemoveFixedLinearCoefs (SCIP_NLROW *nlrow, BMS_BLKMEM *blkmem, SCIP_SET *set, SCIP_STAT *stat, SCIP_NLP *nlp)
static SCIP_RETCODE	nlrowSimplifyExpr (SCIP_NLROW *nlrow, BMS_BLKMEM *blkmem, SCIP_SET *set, SCIP_STAT *stat, SCIP_NLP *nlp)
static SCIP_RETCODE	nlrowRemoveFixedVar (SCIP_NLROW *nlrow, BMS_BLKMEM *blkmem, SCIP_SET *set, SCIP_STAT *stat, SCIP_NLP *nlp, SCIP_VAR *var)
SCIP_RETCODE	SCIPnlrowCreate (SCIP_NLROW **nlrow, BMS_BLKMEM *blkmem, SCIP_SET *set, SCIP_STAT *stat, const char *name, SCIP_Real constant, int nlinvars, SCIP_VAR **linvars, SCIP_Real *lincoefs, SCIP_EXPR *expr, SCIP_Real lhs, SCIP_Real rhs, SCIP_EXPRCURV curvature)
SCIP_RETCODE	SCIPnlrowCreateCopy (SCIP_NLROW **nlrow, BMS_BLKMEM *blkmem, SCIP_SET *set, SCIP_STAT *stat, SCIP_NLROW *sourcenlrow)
SCIP_RETCODE	SCIPnlrowCreateFromRow (SCIP_NLROW **nlrow, BMS_BLKMEM *blkmem, SCIP_SET *set, SCIP_STAT *stat, SCIP_ROW *row)
SCIP_RETCODE	SCIPnlrowPrint (SCIP_NLROW *nlrow, BMS_BLKMEM *blkmem, SCIP_SET *set, SCIP_STAT *stat, SCIP_MESSAGEHDLR *messagehdlr, FILE *file)
void	SCIPnlrowCapture (SCIP_NLROW *nlrow)
SCIP_RETCODE	SCIPnlrowRelease (SCIP_NLROW **nlrow, BMS_BLKMEM *blkmem, SCIP_SET *set, SCIP_STAT *stat)
SCIP_RETCODE	SCIPnlrowEnsureLinearSize (SCIP_NLROW *nlrow, BMS_BLKMEM *blkmem, SCIP_SET *set, int num)
SCIP_RETCODE	SCIPnlrowAddLinearCoef (SCIP_NLROW *nlrow, BMS_BLKMEM *blkmem, SCIP_SET *set, SCIP_STAT *stat, SCIP_NLP *nlp, SCIP_VAR *var, SCIP_Real val)
SCIP_RETCODE	SCIPnlrowDelLinearCoef (SCIP_NLROW *nlrow, SCIP_SET *set, SCIP_STAT *stat, SCIP_NLP *nlp, SCIP_VAR *var)
SCIP_RETCODE	SCIPnlrowChgLinearCoef (SCIP_NLROW *nlrow, BMS_BLKMEM *blkmem, SCIP_SET *set, SCIP_STAT *stat, SCIP_NLP *nlp, SCIP_VAR *var, SCIP_Real coef)
SCIP_RETCODE	SCIPnlrowChgExpr (SCIP_NLROW *nlrow, BMS_BLKMEM *blkmem, SCIP_SET *set, SCIP_STAT *stat, SCIP_NLP *nlp, SCIP_EXPR *expr)
SCIP_RETCODE	SCIPnlrowChgConstant (SCIP_NLROW *nlrow, SCIP_SET *set, SCIP_STAT *stat, SCIP_NLP *nlp, SCIP_Real constant)
SCIP_RETCODE	SCIPnlrowChgLhs (SCIP_NLROW *nlrow, SCIP_SET *set, SCIP_STAT *stat, SCIP_NLP *nlp, SCIP_Real lhs)
SCIP_RETCODE	SCIPnlrowChgRhs (SCIP_NLROW *nlrow, SCIP_SET *set, SCIP_STAT *stat, SCIP_NLP *nlp, SCIP_Real rhs)
void	SCIPnlrowSetCurvature (SCIP_NLP *nlp, SCIP_SET *set, SCIP_NLROW *nlrow, SCIP_EXPRCURV curvature)
SCIP_RETCODE	SCIPnlrowSimplify (SCIP_NLROW *nlrow, BMS_BLKMEM *blkmem, SCIP_SET *set, SCIP_STAT *stat, SCIP_NLP *nlp)
SCIP_RETCODE	SCIPnlrowRecalcNLPActivity (SCIP_NLROW *nlrow, BMS_BLKMEM *blkmem, SCIP_SET *set, SCIP_STAT *stat, SCIP_PRIMAL *primal, SCIP_TREE *tree, SCIP_NLP *nlp)
SCIP_RETCODE	SCIPnlrowGetNLPActivity (SCIP_NLROW *nlrow, BMS_BLKMEM *blkmem, SCIP_SET *set, SCIP_STAT *stat, SCIP_PRIMAL *primal, SCIP_TREE *tree, SCIP_NLP *nlp, SCIP_Real *activity)
SCIP_RETCODE	SCIPnlrowGetNLPFeasibility (SCIP_NLROW *nlrow, BMS_BLKMEM *blkmem, SCIP_SET *set, SCIP_STAT *stat, SCIP_PRIMAL *primal, SCIP_TREE *tree, SCIP_NLP *nlp, SCIP_Real *feasibility)
SCIP_RETCODE	SCIPnlrowRecalcPseudoActivity (SCIP_NLROW *nlrow, BMS_BLKMEM *blkmem, SCIP_SET *set, SCIP_STAT *stat, SCIP_PROB *prob, SCIP_PRIMAL *primal, SCIP_TREE *tree, SCIP_LP *lp)
SCIP_RETCODE	SCIPnlrowGetPseudoActivity (SCIP_NLROW *nlrow, BMS_BLKMEM *blkmem, SCIP_SET *set, SCIP_STAT *stat, SCIP_PROB *prob, SCIP_PRIMAL *primal, SCIP_TREE *tree, SCIP_LP *lp, SCIP_Real *pseudoactivity)
SCIP_RETCODE	SCIPnlrowGetPseudoFeasibility (SCIP_NLROW *nlrow, BMS_BLKMEM *blkmem, SCIP_SET *set, SCIP_STAT *stat, SCIP_PROB *prob, SCIP_PRIMAL *primal, SCIP_TREE *tree, SCIP_LP *lp, SCIP_Real *pseudofeasibility)
SCIP_RETCODE	SCIPnlrowGetSolActivity (SCIP_NLROW *nlrow, BMS_BLKMEM *blkmem, SCIP_SET *set, SCIP_STAT *stat, SCIP_SOL *sol, SCIP_Real *activity)
SCIP_RETCODE	SCIPnlrowGetSolFeasibility (SCIP_NLROW *nlrow, BMS_BLKMEM *blkmem, SCIP_SET *set, SCIP_STAT *stat, SCIP_SOL *sol, SCIP_Real *feasibility)
SCIP_RETCODE	SCIPnlrowGetActivityBounds (SCIP_NLROW *nlrow, BMS_BLKMEM *blkmem, SCIP_SET *set, SCIP_STAT *stat, SCIP_Real *minactivity, SCIP_Real *maxactivity)
SCIP_RETCODE	SCIPnlrowIsRedundant (SCIP_NLROW *nlrow, BMS_BLKMEM *blkmem, SCIP_SET *set, SCIP_STAT *stat, SCIP_Bool *isredundant)
SCIP_Real	SCIPnlrowGetConstant (SCIP_NLROW *nlrow)
int	SCIPnlrowGetNLinearVars (SCIP_NLROW *nlrow)
SCIP_VAR **	SCIPnlrowGetLinearVars (SCIP_NLROW *nlrow)
SCIP_Real *	SCIPnlrowGetLinearCoefs (SCIP_NLROW *nlrow)
SCIP_EXPR *	SCIPnlrowGetExpr (SCIP_NLROW *nlrow)
SCIP_Real	SCIPnlrowGetLhs (SCIP_NLROW *nlrow)
SCIP_Real	SCIPnlrowGetRhs (SCIP_NLROW *nlrow)
SCIP_EXPRCURV	SCIPnlrowGetCurvature (SCIP_NLROW *nlrow)
const char *	SCIPnlrowGetName (SCIP_NLROW *nlrow)
int	SCIPnlrowGetNLPPos (SCIP_NLROW *nlrow)
SCIP_Bool	SCIPnlrowIsInNLP (SCIP_NLROW *nlrow)
SCIP_Real	SCIPnlrowGetDualsol (SCIP_NLROW *nlrow)
static SCIP_RETCODE	nlpAddNlRows (SCIP_NLP *nlp, BMS_BLKMEM *blkmem, SCIP_SET *set, SCIP_STAT *stat, int nnlrows, SCIP_NLROW **nlrows)
static void	nlpMoveNlrow (SCIP_NLP *nlp, int oldpos, int newpos)
static SCIP_RETCODE	nlpDelNlRowPos (SCIP_NLP *nlp, BMS_BLKMEM *blkmem, SCIP_SET *set, SCIP_STAT *stat, int pos)
static SCIP_RETCODE	nlpUpdateVarBounds (SCIP_NLP *nlp, SCIP_SET *set, SCIP_VAR *var, SCIP_Bool tightened)
static SCIP_RETCODE	nlpUpdateObjCoef (SCIP_SET *set, SCIP_NLP *nlp, SCIP_VAR *var)
static SCIP_RETCODE	nlpAddVars (SCIP_NLP *nlp, BMS_BLKMEM *blkmem, SCIP_SET *set, int nvars, SCIP_VAR **vars)
static SCIP_RETCODE	nlpMoveVar (SCIP_NLP *nlp, int oldpos, int newpos)
static SCIP_RETCODE	nlpDelVarPos (SCIP_NLP *nlp, BMS_BLKMEM *blkmem, SCIP_SET *set, SCIP_STAT *stat, SCIP_EVENTQUEUE *eventqueue, SCIP_LP *lp, int pos)
static SCIP_RETCODE	nlpRemoveFixedVar (SCIP_NLP *nlp, BMS_BLKMEM *blkmem, SCIP_SET *set, SCIP_STAT *stat, SCIP_EVENTQUEUE *eventqueue, SCIP_LP *lp, SCIP_VAR *var)
static SCIP_RETCODE	nlpSetupNlpiIndices (SCIP_NLP *nlp, SCIP_SET *set, SCIP_NLROW *nlrow, int **linidxs)
static SCIP_RETCODE	nlpEnsureVarsSolverSize (SCIP_NLP *nlp, BMS_BLKMEM *blkmem, SCIP_SET *set, int num)
static SCIP_RETCODE	nlpEnsureNlRowsSolverSize (SCIP_NLP *nlp, BMS_BLKMEM *blkmem, SCIP_SET *set, int num)
static SCIP_RETCODE	nlpFlushNlRowDeletions (SCIP_NLP *nlp, BMS_BLKMEM *blkmem, SCIP_SET *set)
static SCIP_RETCODE	nlpFlushVarDeletions (SCIP_NLP *nlp, BMS_BLKMEM *blkmem, SCIP_SET *set)
static SCIP_RETCODE	nlpFlushNlRowAdditions (SCIP_NLP *nlp, BMS_BLKMEM *blkmem, SCIP_SET *set, SCIP_STAT *stat)
static SCIP_RETCODE	nlpFlushVarAdditions (SCIP_NLP *nlp, BMS_BLKMEM *blkmem, SCIP_SET *set)
static SCIP_RETCODE	nlpFlushObjective (SCIP_NLP *nlp, BMS_BLKMEM *blkmem, SCIP_SET *set)
static SCIP_RETCODE	nlpSolve (SCIP_NLP *nlp, BMS_BLKMEM *blkmem, SCIP_SET *set, SCIP_MESSAGEHDLR *messagehdlr, SCIP_STAT *stat, SCIP_PRIMAL *primal, SCIP_TREE *tree, SCIP_NLPPARAM *nlpparam)
static SCIP_RETCODE	nlpCalcFracVars (SCIP_NLP *nlp, BMS_BLKMEM *blkmem, SCIP_SET *set, SCIP_STAT *stat)
SCIP_RETCODE	SCIPnlpInclude (SCIP_SET *set, BMS_BLKMEM *blkmem)
SCIP_RETCODE	SCIPnlpCreate (SCIP_NLP **nlp, BMS_BLKMEM *blkmem, SCIP_SET *set, SCIP_STAT *stat, const char *name, int nvars_estimate)
SCIP_RETCODE	SCIPnlpFree (SCIP_NLP **nlp, BMS_BLKMEM *blkmem, SCIP_SET *set, SCIP_STAT *stat, SCIP_EVENTQUEUE *eventqueue, SCIP_LP *lp)
SCIP_RETCODE	SCIPnlpReset (SCIP_NLP *nlp, BMS_BLKMEM *blkmem, SCIP_SET *set, SCIP_STAT *stat, SCIP_EVENTQUEUE *eventqueue, SCIP_LP *lp)
SCIP_Bool	SCIPnlpHasCurrentNodeNLP (SCIP_NLP *nlp)
SCIP_RETCODE	SCIPnlpEnsureVarsSize (SCIP_NLP *nlp, BMS_BLKMEM *blkmem, SCIP_SET *set, int num)
SCIP_RETCODE	SCIPnlpAddVar (SCIP_NLP *nlp, BMS_BLKMEM *blkmem, SCIP_SET *set, SCIP_VAR *var)
SCIP_RETCODE	SCIPnlpAddVars (SCIP_NLP *nlp, BMS_BLKMEM *blkmem, SCIP_SET *set, int nvars, SCIP_VAR **vars)
SCIP_RETCODE	SCIPnlpDelVar (SCIP_NLP *nlp, BMS_BLKMEM *blkmem, SCIP_SET *set, SCIP_STAT *stat, SCIP_EVENTQUEUE *eventqueue, SCIP_LP *lp, SCIP_VAR *var)
SCIP_RETCODE	SCIPnlpEnsureNlRowsSize (SCIP_NLP *nlp, BMS_BLKMEM *blkmem, SCIP_SET *set, int num)
SCIP_RETCODE	SCIPnlpAddNlRow (SCIP_NLP *nlp, BMS_BLKMEM *blkmem, SCIP_SET *set, SCIP_STAT *stat, SCIP_NLROW *nlrow)
SCIP_RETCODE	SCIPnlpAddNlRows (SCIP_NLP *nlp, BMS_BLKMEM *blkmem, SCIP_SET *set, SCIP_STAT *stat, int nnlrows, SCIP_NLROW **nlrows)
SCIP_RETCODE	SCIPnlpDelNlRow (SCIP_NLP *nlp, BMS_BLKMEM *blkmem, SCIP_SET *set, SCIP_STAT *stat, SCIP_NLROW *nlrow)
SCIP_RETCODE	SCIPnlpFlush (SCIP_NLP *nlp, BMS_BLKMEM *blkmem, SCIP_SET *set, SCIP_STAT *stat)
SCIP_RETCODE	SCIPnlpSolve (SCIP_NLP *nlp, BMS_BLKMEM *blkmem, SCIP_SET *set, SCIP_MESSAGEHDLR *messagehdlr, SCIP_STAT *stat, SCIP_PRIMAL *primal, SCIP_TREE *tree, SCIP_NLPPARAM *nlpparam)
SCIP_Real	SCIPnlpGetObjval (SCIP_NLP *nlp)
SCIP_RETCODE	SCIPnlpGetPseudoObjval (SCIP_NLP *nlp, BMS_BLKMEM *blkmem, SCIP_SET *set, SCIP_STAT *stat, SCIP_PROB *prob, SCIP_PRIMAL *primal, SCIP_TREE *tree, SCIP_LP *lp, SCIP_Real *pseudoobjval)
SCIP_RETCODE	SCIPnlpGetFracVars (SCIP_NLP *nlp, BMS_BLKMEM *blkmem, SCIP_SET *set, SCIP_STAT *stat, SCIP_VAR ***fracvars, SCIP_Real **fracvarssol, SCIP_Real **fracvarsfrac, int *nfracvars, int *npriofracvars)
SCIP_RETCODE	SCIPnlpRemoveRedundantNlRows (SCIP_NLP *nlp, BMS_BLKMEM *blkmem, SCIP_SET *set, SCIP_STAT *stat)
SCIP_RETCODE	SCIPnlpSetInitialGuess (SCIP_SET *set, SCIP_NLP *nlp, BMS_BLKMEM *blkmem, SCIP_Real *initguess)
SCIP_RETCODE	SCIPnlpWrite (SCIP_NLP *nlp, BMS_BLKMEM *blkmem, SCIP_SET *set, SCIP_STAT *stat, SCIP_MESSAGEHDLR *messagehdlr, const char *fname)
SCIP_VAR **	SCIPnlpGetVars (SCIP_NLP *nlp)
int	SCIPnlpGetNVars (SCIP_NLP *nlp)
SCIP_RETCODE	SCIPnlpGetVarsNonlinearity (SCIP_NLP *nlp, BMS_BLKMEM *blkmem, SCIP_SET *set, SCIP_STAT *stat, int *nlcount)
SCIP_RETCODE	SCIPnlpHasContinuousNonlinearity (SCIP_NLP *nlp, BMS_BLKMEM *blkmem, SCIP_SET *set, SCIP_STAT *stat, SCIP_Bool *result)
SCIP_Real *	SCIPnlpGetVarsLbDualsol (SCIP_NLP *nlp)
SCIP_Real *	SCIPnlpGetVarsUbDualsol (SCIP_NLP *nlp)
SCIP_NLROW **	SCIPnlpGetNlRows (SCIP_NLP *nlp)
int	SCIPnlpGetNNlRows (SCIP_NLP *nlp)
void	SCIPnlpGetNlRowsStat (SCIP_NLP *nlp, int *nlinear, int *nconvexineq, int *nnonconvexineq, int *nnonlineareq)
SCIP_NLPI *	SCIPnlpGetNLPI (SCIP_NLP *nlp)
SCIP_NLPIPROBLEM *	SCIPnlpGetNLPIProblem (SCIP_NLP *nlp)
SCIP_Bool	SCIPnlpIsDiving (SCIP_NLP *nlp)
SCIP_NLPSOLSTAT	SCIPnlpGetSolstat (SCIP_NLP *nlp)
SCIP_NLPTERMSTAT	SCIPnlpGetTermstat (SCIP_NLP *nlp)
SCIP_RETCODE	SCIPnlpGetStatistics (SCIP_SET *set, SCIP_NLP *nlp, SCIP_NLPSTATISTICS *statistics)
SCIP_Bool	SCIPnlpHasSolution (SCIP_NLP *nlp)
SCIP_RETCODE	SCIPnlpStartDive (SCIP_NLP *nlp, BMS_BLKMEM *blkmem, SCIP_SET *set, SCIP_STAT *stat)
SCIP_RETCODE	SCIPnlpEndDive (SCIP_NLP *nlp, BMS_BLKMEM *blkmem, SCIP_SET *set, SCIP_STAT *stat)
SCIP_RETCODE	SCIPnlpChgVarObjDive (SCIP_NLP *nlp, BMS_BLKMEM *blkmem, SCIP_SET *set, SCIP_STAT *stat, SCIP_VAR *var, SCIP_Real coef)
SCIP_RETCODE	SCIPnlpChgVarBoundsDive (SCIP_SET *set, SCIP_NLP *nlp, SCIP_VAR *var, SCIP_Real lb, SCIP_Real ub)
SCIP_RETCODE	SCIPnlpChgVarsBoundsDive (SCIP_NLP *nlp, SCIP_SET *set, int nvars, SCIP_VAR **vars, SCIP_Real *lbs, SCIP_Real *ubs)
SCIP_Bool	SCIPnlpIsDivingObjChanged (SCIP_NLP *nlp)

Macro Definition Documentation

EVENTHDLR_NAME

#define EVENTHDLR_NAME   "nlpEventHdlr"

name of NLP event handler that catches variable events

Definition at line 71 of file nlp.c.

EVENTHDLR_DESC

#define EVENTHDLR_DESC   "handles all events necessary for maintaining NLP data"

description of NLP event handler

Definition at line 72 of file nlp.c.

ADDNAMESTONLPI

#define ADDNAMESTONLPI   0

whether to give variable and row names to NLPI

Definition at line 73 of file nlp.c.

Function Documentation

SCIP_DECL_EVENTEXEC()

static SCIP_DECL_EVENTEXEC ( eventExecNlp  )

static

NLP event handler execution method

event handling for variable events

Definition at line 3454 of file nlp.c.

References nlpRemoveFixedVar(), nlpUpdateObjCoef(), nlpUpdateVarBounds(), NULL, SCIP_Bool, SCIP_CALL, SCIP_ERROR, SCIP_EVENTTYPE_BOUNDCHANGED, SCIP_EVENTTYPE_BOUNDTIGHTENED, SCIP_EVENTTYPE_FORMAT, SCIP_EVENTTYPE_OBJCHANGED, SCIP_EVENTTYPE_VARADDED, SCIP_EVENTTYPE_VARDELETED, SCIP_EVENTTYPE_VARFIXED, SCIP_OKAY, SCIPdebugMessage, SCIPerrorMessage, SCIPeventGetType(), SCIPeventGetVar(), SCIPnlpAddVar(), SCIPnlpDelVar(), and SCIPvarGetName().

nlpRowChanged()

static SCIP_RETCODE nlpRowChanged ( SCIP_NLP *  nlp, SCIP_SET *  set, SCIP_STAT *  stat, SCIP_NLROW *  nlrow  )

static

announces, that a row of the NLP was modified

adjusts status of current solution; calling method has to ensure that change is passed on to the NLPI!

announces, that a row of the NLP was modified adjusts status of current solution calling method has to ensure that change is passed to the NLPI!

Parameters

nlp	current NLP data
set	global SCIP settings
stat	problem statistics data
nlrow	nonlinear row which was changed

Definition at line 1986 of file nlp.c.

References SCIP_Nlp::indiving, SCIP_NlRow::nlpindex, NULL, SCIP_NLPSOLSTAT_FEASIBLE, SCIP_NLPSOLSTAT_LOCINFEASIBLE, SCIP_NLPSOLSTAT_UNKNOWN, SCIP_OKAY, and SCIP_Nlp::solstat.

Referenced by nlrowConstantChanged(), nlrowExprChanged(), nlrowLinearCoefChanged(), and nlrowSideChanged().

nlrowLinearCoefChanged()

static SCIP_RETCODE nlrowLinearCoefChanged ( SCIP_NLROW *  nlrow, SCIP_SET *  set, SCIP_STAT *  stat, SCIP_VAR *  var, SCIP_Real  coef, SCIP_NLP *  nlp  )

static

announces, that the given linear coefficient in the constraint matrix changed

Parameters

nlrow	nonlinear row
set	global SCIP settings
stat	problem statistics data
var	variable which coefficient changed
coef	new coefficient of variable, 0.0 if deleted
nlp	current NLP data

Definition at line 106 of file nlp.c.

References SCIP_NlRow::activity, SCIP_NlRow::maxactivity, SCIP_NlRow::minactivity, SCIP_NlRow::nlpiindex, SCIP_NlRow::nlpindex, nlpRowChanged(), NULL, SCIP_Nlp::problem, SCIP_NlRow::pseudoactivity, SCIP_CALL, SCIP_INVALID, SCIP_OKAY, SCIPhashmapExists(), SCIPhashmapGetImageInt(), SCIPnlpiChgLinearCoefs(), SCIP_Nlp::solver, SCIP_NlRow::validactivitybdsdomchg, SCIP_NlRow::validactivitynlp, SCIP_NlRow::validpsactivitydomchg, SCIP_Nlp::varhash, and SCIP_Nlp::varmap_nlp2nlpi.

Referenced by nlrowAddLinearCoef(), nlrowChgLinearCoefPos(), nlrowDelLinearCoefPos(), and nlrowRemoveFixedLinearCoefPos().

SCIP_DECL_EXPR_MAPEXPR()

static SCIP_DECL_EXPR_MAPEXPR ( mapvar2varidx  )

static

create varidx expression for var expression

called when expr is duplicated for addition to NLPI

Definition at line 159 of file nlp.c.

References NULL, SCIP_Nlp::nvars_solver, SCIP_CALL, SCIP_OKAY, SCIPcreateExprVaridx(), SCIPexprIsVar(), SCIPgetVarExprVar(), SCIPhashmapExists(), SCIPhashmapGetImageInt(), SCIPvarIsActive(), SCIP_Nlp::varhash, and SCIP_Nlp::varmap_nlp2nlpi.

nlrowExprChanged()

static SCIP_RETCODE nlrowExprChanged ( SCIP_NLROW *  nlrow, BMS_BLKMEM *  blkmem, SCIP_SET *  set, SCIP_STAT *  stat, SCIP_NLP *  nlp  )

static

announces, that an expression changed

Parameters

nlrow	nonlinear row
blkmem	block memory
set	global SCIP settings
stat	problem statistics data
nlp	current NLP data

Definition at line 192 of file nlp.c.

References SCIP_NlRow::activity, SCIP_NlRow::expr, SCIP_NlRow::maxactivity, SCIP_NlRow::minactivity, SCIP_NlRow::nlpiindex, SCIP_NlRow::nlpindex, nlpRowChanged(), NULL, SCIP_NlRow::pseudoactivity, SCIP_CALL, SCIP_INVALID, SCIP_OKAY, SCIPexprCopy(), SCIPexprRelease(), SCIPnlpiChgExpr(), SCIP_NlRow::validactivitybdsdomchg, SCIP_NlRow::validactivitynlp, and SCIP_NlRow::validpsactivitydomchg.

Referenced by nlrowSimplifyExpr(), and SCIPnlrowChgExpr().

nlrowSideChanged()

static SCIP_RETCODE nlrowSideChanged ( SCIP_NLROW *  nlrow, SCIP_SET *  set, SCIP_STAT *  stat, SCIP_NLP *  nlp  )

static

notifies nonlinear row, that its sides were changed

Parameters

nlrow	nonlinear row
set	global SCIP settings
stat	problem statistics data
nlp	current NLP data

Definition at line 233 of file nlp.c.

References SCIP_NlRow::constant, SCIP_NlRow::lhs, SCIP_NlRow::nlpiindex, SCIP_NlRow::nlpindex, nlpRowChanged(), NULL, SCIP_Nlp::problem, SCIP_NlRow::rhs, SCIP_CALL, SCIP_OKAY, SCIP_Real, SCIPnlpiChgConsSides(), SCIPsetIsInfinity(), and SCIP_Nlp::solver.

Referenced by SCIPnlrowChgLhs(), and SCIPnlrowChgRhs().

nlrowConstantChanged()

static SCIP_RETCODE nlrowConstantChanged ( SCIP_NLROW *  nlrow, SCIP_SET *  set, SCIP_STAT *  stat, SCIP_NLP *  nlp  )

static

notifies nonlinear row, that its constant was changed

Parameters

nlrow	nonlinear row
set	global SCIP settings
stat	problem statistics data
nlp	current NLP data

Definition at line 271 of file nlp.c.

References SCIP_NlRow::activity, SCIP_NlRow::constant, SCIP_NlRow::lhs, SCIP_NlRow::maxactivity, SCIP_NlRow::minactivity, SCIP_NlRow::nlpiindex, SCIP_NlRow::nlpindex, nlpRowChanged(), NULL, SCIP_Nlp::problem, SCIP_NlRow::pseudoactivity, SCIP_NlRow::rhs, SCIP_CALL, SCIP_INVALID, SCIP_OKAY, SCIP_Real, SCIPnlpiChgConsSides(), SCIPsetIsInfinity(), SCIP_Nlp::solver, SCIP_NlRow::validactivitybdsdomchg, SCIP_NlRow::validactivitynlp, and SCIP_NlRow::validpsactivitydomchg.

Referenced by nlrowRemoveFixedLinearCoefPos(), and SCIPnlrowChgConstant().

nlrowAddToStat()

static void nlrowAddToStat ( SCIP_NLP *  nlp, SCIP_SET *  set, SCIP_NLROW *  nlrow, int  incr  )

static

increments or decrements count of NLROW in NLP statistics

Updates count on linear/convex/nonconvex NLP rows w.r.t. given NLROW.

Parameters

nlp	NLP
set	global SCIP settings
nlrow	nonlinear row
incr	by how much to increment statistic: +1 or -1

Definition at line 320 of file nlp.c.

References SCIP_NlRow::curvature, SCIP_NlRow::expr, SCIP_NlRow::lhs, SCIP_Nlp::nnlrowconvexineq, SCIP_Nlp::nnlrowlinear, SCIP_Nlp::nnlrownonconvexineq, SCIP_Nlp::nnlrownonlineareq, NULL, SCIP_NlRow::rhs, SCIP_EXPRCURV_CONCAVE, SCIP_EXPRCURV_CONVEX, and SCIPsetIsInfinity().

Referenced by nlpAddNlRows(), nlpDelNlRowPos(), nlrowSimplifyExpr(), SCIPnlrowChgExpr(), SCIPnlrowChgLhs(), SCIPnlrowChgRhs(), and SCIPnlrowSetCurvature().

nlrowSortLinear()

static void nlrowSortLinear ( SCIP_NLROW *  nlrow )

static

sorts linear part of row entries such that lower variable indices precede higher ones

Parameters

nlrow

nonlinear row to be sorted

Definition at line 360 of file nlp.c.

References SCIP_NlRow::lincoefs, SCIP_NlRow::linvars, SCIP_NlRow::linvarssorted, SCIP_NlRow::nlinvars, NULL, SCIPsortPtrReal(), and TRUE.

Referenced by nlrowSearchLinearCoef().

nlrowSearchLinearCoef()

static int nlrowSearchLinearCoef ( SCIP_NLROW *  nlrow, SCIP_VAR *  var  )

static

searches linear variable in nonlinear row, returns position in linvars vector or -1 if not found

Parameters

nlrow	nonlinear row to be searched in
var	variable to be searched for

Definition at line 378 of file nlp.c.

References SCIP_NlRow::linvars, SCIP_NlRow::nlinvars, nlrowSortLinear(), NULL, and SCIPsortedvecFindPtr().

Referenced by nlpDelVarPos(), nlrowRemoveFixedVar(), SCIPnlrowChgLinearCoef(), and SCIPnlrowDelLinearCoef().

nlrowMoveLinearCoef()

static void nlrowMoveLinearCoef ( SCIP_NLROW *  nlrow, int  oldpos, int  newpos  )

static

moves a coefficient in a nonlinear row to a different place, and updates all corresponding data structures

Parameters

nlrow	NLP row
oldpos	old position of coefficient
newpos	new position of coefficient

Definition at line 400 of file nlp.c.

References FALSE, SCIP_NlRow::lincoefs, SCIP_NlRow::linvars, SCIP_NlRow::linvarssorted, and NULL.

Referenced by nlrowDelLinearCoefPos(), and nlrowRemoveFixedLinearCoefPos().

nlrowAddLinearCoef()

static SCIP_RETCODE nlrowAddLinearCoef ( SCIP_NLROW *  nlrow, BMS_BLKMEM *  blkmem, SCIP_SET *  set, SCIP_STAT *  stat, SCIP_NLP *  nlp, SCIP_VAR *  var, SCIP_Real  coef  )

static

adds a previously non existing linear coefficient to a nonlinear row

Parameters

nlrow	nonlinear row
blkmem	block memory
set	global SCIP settings
stat	problem statistics data
nlp	current NLP data
var	variable
coef	value of coefficient

Definition at line 423 of file nlp.c.

References FALSE, SCIP_NlRow::lincoefs, SCIP_NlRow::linvars, SCIP_NlRow::linvarssorted, SCIP_NlRow::name, SCIP_NlRow::nlinvars, SCIP_NlRow::nlpindex, nlrowLinearCoefChanged(), NULL, SCIP_CALL, SCIP_OKAY, SCIPnlrowEnsureLinearSize(), SCIPsetDebugMsg, SCIPvarCompare(), SCIPvarGetName(), and SCIPvarIsActive().

Referenced by nlrowRemoveFixedLinearCoefPos(), SCIPnlrowAddLinearCoef(), and SCIPnlrowChgLinearCoef().

nlrowDelLinearCoefPos()

static SCIP_RETCODE nlrowDelLinearCoefPos ( SCIP_NLROW *  nlrow, SCIP_SET *  set, SCIP_STAT *  stat, SCIP_NLP *  nlp, int  pos  )

static

deletes coefficient at given position from row

Parameters

nlrow	nonlinear row to be changed
set	global SCIP settings
stat	problem statistics data
nlp	current NLP data
pos	position in row vector to delete

Definition at line 552 of file nlp.c.

References FALSE, SCIP_NlRow::linvars, SCIP_NlRow::linvarssorted, SCIP_NlRow::nlinvars, nlrowLinearCoefChanged(), nlrowMoveLinearCoef(), NULL, SCIP_CALL, and SCIP_OKAY.

Referenced by nlrowChgLinearCoefPos(), nlrowRemoveFixedLinearCoefPos(), and SCIPnlrowDelLinearCoef().

nlrowChgLinearCoefPos()

static SCIP_RETCODE nlrowChgLinearCoefPos ( SCIP_NLROW *  nlrow, SCIP_SET *  set, SCIP_STAT *  stat, SCIP_NLP *  nlp, int  pos, SCIP_Real  coef  )

static

changes a coefficient at given position of a nonlinear row

Parameters

nlrow	NLP row
set	global SCIP settings
stat	problem statistics data
nlp	current NLP data
pos	position in row vector to change
coef	new value of coefficient

Definition at line 581 of file nlp.c.

References SCIP_NlRow::lincoefs, SCIP_NlRow::linvars, nlrowDelLinearCoefPos(), nlrowLinearCoefChanged(), NULL, SCIP_CALL, SCIP_OKAY, SCIPsetIsEQ(), and SCIPsetIsZero().

Referenced by SCIPnlrowChgLinearCoef().

nlrowCalcActivityBounds()

static SCIP_RETCODE nlrowCalcActivityBounds ( SCIP_NLROW *  nlrow, BMS_BLKMEM *  blkmem, SCIP_SET *  set, SCIP_STAT *  stat  )

static

calculates minimal and maximal activity of row w.r.t. the variable's bounds

Parameters

nlrow	nonlinear row
blkmem	block memory
set	global SCIP settings
stat	problem statistics data

Definition at line 612 of file nlp.c.

References SCIP_NlRow::constant, SCIP_Stat::domchgcount, SCIP_NlRow::expr, SCIP_NlRow::lincoefs, SCIP_NlRow::linvars, SCIP_NlRow::maxactivity, SCIP_NlRow::minactivity, SCIP_NlRow::nlinvars, NULL, SCIP_CALL, SCIP_OKAY, SCIP_Real, SCIPexprEvalActivity(), SCIPexprGetActivity(), SCIPintervalAdd(), SCIPintervalGetInf(), SCIPintervalGetSup(), SCIPintervalIsEntire(), SCIPintervalMulScalar(), SCIPintervalSet(), SCIPintervalSetBounds(), SCIPsetInfinity(), SCIPvarGetLbLocal(), SCIPvarGetUbLocal(), and SCIP_NlRow::validactivitybdsdomchg.

Referenced by SCIPnlrowGetActivityBounds().

nlrowRemoveFixedLinearCoefPos()

static SCIP_RETCODE nlrowRemoveFixedLinearCoefPos ( SCIP_NLROW *  nlrow, BMS_BLKMEM *  blkmem, SCIP_SET *  set, SCIP_STAT *  stat, SCIP_NLP *  nlp, int  pos  )

static

makes sure that there is no fixed variable at position pos of the linear part of a nonlinear row

a fixed variable is replaced with the corresponding constant or disaggregated term

Parameters

nlrow	nonlinear row
blkmem	block memory
set	global SCIP settings
stat	problem statistics data
nlp	current NLP data
pos	position of variable in linear variables array

Definition at line 658 of file nlp.c.

References SCIP_NlRow::constant, FALSE, SCIP_NlRow::lincoefs, SCIP_NlRow::linvars, SCIP_NlRow::linvarssorted, SCIP_NlRow::nlinvars, nlrowAddLinearCoef(), nlrowConstantChanged(), nlrowDelLinearCoefPos(), nlrowLinearCoefChanged(), nlrowMoveLinearCoef(), nlrowRemoveFixedLinearCoefPos(), NULL, SCIP_CALL, SCIP_OKAY, SCIP_Real, SCIP_VARSTATUS_MULTAGGR, SCIPnlrowEnsureLinearSize(), SCIPsetIsZero(), SCIPvarGetMultaggrConstant(), SCIPvarGetMultaggrNVars(), SCIPvarGetMultaggrScalars(), SCIPvarGetMultaggrVars(), SCIPvarGetProbvarSum(), SCIPvarGetStatus(), and SCIPvarIsActive().

Referenced by nlrowRemoveFixedLinearCoefPos(), nlrowRemoveFixedLinearCoefs(), and nlrowRemoveFixedVar().

nlrowRemoveFixedLinearCoefs()

static SCIP_RETCODE nlrowRemoveFixedLinearCoefs ( SCIP_NLROW *  nlrow, BMS_BLKMEM *  blkmem, SCIP_SET *  set, SCIP_STAT *  stat, SCIP_NLP *  nlp  )

static

removes fixed variables from the linear part of a nonlinear row

Parameters

nlrow	nonlinear row
blkmem	block memory
set	global SCIP settings
stat	problem statistics data
nlp	current NLP data

Definition at line 760 of file nlp.c.

References SCIP_NlRow::linvars, MIN, SCIP_NlRow::nlinvars, nlrowRemoveFixedLinearCoefPos(), NULL, SCIP_CALL, and SCIP_OKAY.

Referenced by SCIPnlrowSimplify().

nlrowSimplifyExpr()

static SCIP_RETCODE nlrowSimplifyExpr ( SCIP_NLROW *  nlrow, BMS_BLKMEM *  blkmem, SCIP_SET *  set, SCIP_STAT *  stat, SCIP_NLP *  nlp  )

static

removes fixed variables from expression of a nonlinear row

Parameters

nlrow	nonlinear row
blkmem	block memory
set	global SCIP settings
stat	problem statistics data
nlp	current NLP data

Definition at line 786 of file nlp.c.

References SCIP_NlRow::constant, SCIP_NlRow::curvature, SCIP_NlRow::expr, SCIP_NlRow::nlpindex, nlrowAddToStat(), nlrowExprChanged(), NULL, SCIP_Bool, SCIP_CALL, SCIP_EXPRCURV_LINEAR, SCIP_OKAY, SCIPexprIsValue(), SCIPexprRelease(), SCIPexprSimplify(), SCIPgetValueExprValue(), and SCIPnlrowChgConstant().

Referenced by nlrowRemoveFixedVar(), and SCIPnlrowSimplify().

nlrowRemoveFixedVar()

static SCIP_RETCODE nlrowRemoveFixedVar ( SCIP_NLROW *  nlrow, BMS_BLKMEM *  blkmem, SCIP_SET *  set, SCIP_STAT *  stat, SCIP_NLP *  nlp, SCIP_VAR *  var  )

static

removes fixed variable from nonlinear row

Parameters

nlrow	nonlinear row
blkmem	block memory
set	global SCIP settings
stat	problem statistics data
nlp	current NLP data
var	variable that had been fixed

Definition at line 838 of file nlp.c.

References SCIP_NlRow::expr, nlrowRemoveFixedLinearCoefPos(), nlrowSearchLinearCoef(), nlrowSimplifyExpr(), NULL, SCIP_CALL, SCIP_OKAY, and SCIPvarIsActive().

Referenced by nlpRemoveFixedVar().

nlpAddNlRows()

static SCIP_RETCODE nlpAddNlRows ( SCIP_NLP *  nlp, BMS_BLKMEM *  blkmem, SCIP_SET *  set, SCIP_STAT *  stat, int  nnlrows, SCIP_NLROW **  nlrows  )

static

adds a set of nonlinear rows to the NLP and captures them

Parameters

nlp	NLP data
blkmem	block memory
set	global SCIP settings
stat	problem statistics data
nnlrows	number of nonlinear rows to add
nlrows	nonlinear rows to add

Definition at line 2022 of file nlp.c.

References SCIP_NlRow::expr, SCIP_Nlp::indiving, SCIP_NlRow::linvars, SCIP_NlRow::nlinvars, SCIP_NlRow::nlpiindex, SCIP_NlRow::nlpindex, nlrowAddToStat(), SCIP_Nlp::nlrows, SCIP_Nlp::nnlrows, NULL, SCIP_Nlp::nunflushednlrowadd, SCIP_CALL, SCIP_EXPRITER_DFS, SCIP_NLPSOLSTAT_FEASIBLE, SCIP_NLPSOLSTAT_LOCINFEASIBLE, SCIP_NLPSOLSTAT_UNBOUNDED, SCIP_NLPSOLSTAT_UNKNOWN, SCIP_OKAY, SCIPexprIsVar(), SCIPexpriterCreate(), SCIPexpriterFree(), SCIPexpriterGetNext(), SCIPexpriterInit(), SCIPexpriterIsEnd(), SCIPgetVarExprVar(), SCIPhashmapExists(), SCIPnlpEnsureNlRowsSize(), SCIPnlrowCapture(), SCIPnlrowSimplify(), SCIP_Nlp::solstat, TRUE, and SCIP_Nlp::varhash.

Referenced by SCIPnlpAddNlRow(), and SCIPnlpAddNlRows().

nlpMoveNlrow()

static void nlpMoveNlrow ( SCIP_NLP *  nlp, int  oldpos, int  newpos  )

static

moves a nonlinear row to a different place, and updates all corresponding data structures

Parameters

nlp	NLP data structure
oldpos	old position of nonlinear row
newpos	new position of nonlinear row

Definition at line 2111 of file nlp.c.

References SCIP_NlRow::nlpiindex, SCIP_NlRow::nlpindex, SCIP_Nlp::nlrowmap_nlpi2nlp, SCIP_Nlp::nlrows, NULL, and SCIP_Nlp::sizenlrows_solver.

Referenced by nlpDelNlRowPos().

nlpDelNlRowPos()

static SCIP_RETCODE nlpDelNlRowPos ( SCIP_NLP *  nlp, BMS_BLKMEM *  blkmem, SCIP_SET *  set, SCIP_STAT *  stat, int  pos  )

static

deletes nonlinear row with given position from NLP

Parameters

nlp	NLP data structure
blkmem	block memory
set	global SCIP settings
stat	problem statistics data
pos	position of nonlinear row that is to be removed

Definition at line 2139 of file nlp.c.

References SCIP_Nlp::indiving, SCIP_NlRow::nlpiindex, SCIP_NlRow::nlpindex, nlpMoveNlrow(), nlrowAddToStat(), SCIP_Nlp::nlrowmap_nlpi2nlp, SCIP_Nlp::nlrows, SCIP_Nlp::nnlrows, SCIP_Nlp::nnlrows_solver, NULL, SCIP_Nlp::nunflushednlrowadd, SCIP_Nlp::nunflushednlrowdel, SCIP_CALL, SCIP_NLPSOLSTAT_FEASIBLE, SCIP_NLPSOLSTAT_GLOBINFEASIBLE, SCIP_NLPSOLSTAT_LOCINFEASIBLE, SCIP_NLPSOLSTAT_LOCOPT, SCIP_OKAY, SCIPnlrowRelease(), and SCIP_Nlp::solstat.

Referenced by SCIPnlpDelNlRow(), SCIPnlpRemoveRedundantNlRows(), and SCIPnlpReset().

nlpUpdateVarBounds()

static SCIP_RETCODE nlpUpdateVarBounds ( SCIP_NLP *  nlp, SCIP_SET *  set, SCIP_VAR *  var, SCIP_Bool  tightened  )

static

updates bounds on a variable in the NLPI problem

Parameters

nlp	NLP data
set	global SCIP settings
var	variable which bounds have changed
tightened	whether the bound change was a bound tightening

Definition at line 2197 of file nlp.c.

References SCIP_Nlp::indiving, NULL, SCIP_Nlp::problem, SCIP_CALL, SCIP_NLPSOLSTAT_FEASIBLE, SCIP_NLPSOLSTAT_LOCINFEASIBLE, SCIP_NLPSOLSTAT_UNBOUNDED, SCIP_NLPSOLSTAT_UNKNOWN, SCIP_OKAY, SCIP_Real, SCIPhashmapExists(), SCIPhashmapGetImageInt(), SCIPnlpiChgVarBounds(), SCIPsetIsFeasGE(), SCIPsetIsFeasLE(), SCIPsetIsInfinity(), SCIPvarGetLbLocal(), SCIPvarGetNLPSol(), SCIPvarGetUbLocal(), SCIP_Nlp::solstat, SCIP_Nlp::solver, SCIP_Nlp::varhash, and SCIP_Nlp::varmap_nlp2nlpi.

Referenced by SCIP_DECL_EVENTEXEC().

nlpUpdateObjCoef()

static SCIP_RETCODE nlpUpdateObjCoef ( SCIP_SET *  set, SCIP_NLP *  nlp, SCIP_VAR *  var  )

static

updates coefficient of a variable in the objective

Parameters

set	global SCIP settings
nlp	NLP data
var	variable which bounds have changed

Definition at line 2256 of file nlp.c.

References FALSE, SCIP_Nlp::indiving, NULL, SCIP_Nlp::objflushed, SCIP_Nlp::problem, SCIP_CALL, SCIP_NLPSOLSTAT_FEASIBLE, SCIP_OKAY, SCIP_Real, SCIPhashmapExists(), SCIPhashmapGetImageInt(), SCIPnlpiChgLinearCoefs(), SCIPvarGetObj(), SCIP_Nlp::solstat, SCIP_Nlp::solver, SCIP_Nlp::varhash, and SCIP_Nlp::varmap_nlp2nlpi.

Referenced by nlpAddVars(), and SCIP_DECL_EVENTEXEC().

nlpAddVars()

static SCIP_RETCODE nlpAddVars ( SCIP_NLP *  nlp, BMS_BLKMEM *  blkmem, SCIP_SET *  set, int  nvars, SCIP_VAR **  vars  )

static

adds new variables to the NLP

Parameters

nlp	NLP data structure
blkmem	block memory
set	global SCIP settings
nvars	number of variables to add
vars	variable to add to NLP

Definition at line 2318 of file nlp.c.

References SCIP_Nlp::eventhdlr, SCIP_Nlp::haveinitguess, SCIP_Nlp::indiving, SCIP_Nlp::initialguess, nlpUpdateObjCoef(), NULL, SCIP_Nlp::nunflushedvaradd, SCIP_Nlp::nvars, SCIP_Nlp::primalsolobjval, SCIP_CALL, SCIP_EVENTTYPE_BOUNDCHANGED, SCIP_EVENTTYPE_OBJCHANGED, SCIP_EVENTTYPE_VARFIXED, SCIP_NLPSOLSTAT_FEASIBLE, SCIP_OKAY, SCIPhashmapExists(), SCIPhashmapInsertInt(), SCIPnlpEnsureVarsSize(), SCIPvarCapture(), SCIPvarCatchEvent(), SCIPvarGetBestBoundLocal(), SCIPvarGetObj(), SCIPvarIsActive(), SCIPvarIsTransformed(), SCIPvarSetNLPSol(), SCIP_Nlp::sizevars, SCIP_Nlp::solstat, SCIP_Nlp::varhash, SCIP_Nlp::varlbdualvals, SCIP_Nlp::varmap_nlp2nlpi, SCIP_Nlp::vars, and SCIP_Nlp::varubdualvals.

Referenced by SCIPnlpAddVar(), and SCIPnlpAddVars().

nlpMoveVar()

static SCIP_RETCODE nlpMoveVar ( SCIP_NLP *  nlp, int  oldpos, int  newpos  )

static

moves a variable to a different place, and updates all corresponding data structures

Parameters

nlp	NLP data structure
oldpos	old position of variable
newpos	new position of variable

Definition at line 2397 of file nlp.c.

References SCIP_Nlp::initialguess, NULL, SCIP_CALL, SCIP_OKAY, SCIPhashmapSetImageInt(), SCIP_Nlp::varhash, SCIP_Nlp::varlbdualvals, SCIP_Nlp::varmap_nlp2nlpi, SCIP_Nlp::varmap_nlpi2nlp, SCIP_Nlp::vars, and SCIP_Nlp::varubdualvals.

Referenced by nlpDelVarPos().

nlpDelVarPos()

static SCIP_RETCODE nlpDelVarPos ( SCIP_NLP *  nlp, BMS_BLKMEM *  blkmem, SCIP_SET *  set, SCIP_STAT *  stat, SCIP_EVENTQUEUE *  eventqueue, SCIP_LP *  lp, int  pos  )

static

deletes variable with given position from NLP

Parameters

nlp	NLP data structure
blkmem	block memory
set	global SCIP settings
stat	problem statistics data
eventqueue	event queue
lp	SCIP LP, needed if a column-variable is freed
pos	position of nonlinear row that is to be removed

Definition at line 2430 of file nlp.c.

References SCIP_Nlp::eventhdlr, SCIP_NlRow::expr, SCIP_Nlp::indiving, SCIP_NlRow::linvars, SCIP_NlRow::linvarssorted, SCIP_NlRow::nlinvars, nlpMoveVar(), SCIP_Nlp::nlrows, nlrowSearchLinearCoef(), SCIP_Nlp::nnlrows, NULL, SCIP_Nlp::nunflushedvaradd, SCIP_Nlp::nunflushedvardel, SCIP_Nlp::nvars, SCIP_Nlp::primalsolobjval, SCIP_CALL, SCIP_EVENTTYPE_BOUNDCHANGED, SCIP_EVENTTYPE_OBJCHANGED, SCIP_EVENTTYPE_VARFIXED, SCIP_EXPRITER_DFS, SCIP_NLPSOLSTAT_FEASIBLE, SCIP_NLPSOLSTAT_UNBOUNDED, SCIP_NLPSOLSTAT_UNKNOWN, SCIP_OKAY, SCIPexprIsVar(), SCIPexpriterCreate(), SCIPexpriterFree(), SCIPexpriterGetNext(), SCIPexpriterInit(), SCIPexpriterIsEnd(), SCIPgetVarExprVar(), SCIPhashmapRemove(), SCIPvarDropEvent(), SCIPvarGetNLPSol(), SCIPvarGetObj(), SCIPvarRelease(), SCIP_Nlp::solstat, TRUE, SCIP_Nlp::varhash, SCIP_Nlp::varmap_nlp2nlpi, SCIP_Nlp::varmap_nlpi2nlp, and SCIP_Nlp::vars.

Referenced by SCIPnlpDelVar(), and SCIPnlpReset().

nlpRemoveFixedVar()

static SCIP_RETCODE nlpRemoveFixedVar ( SCIP_NLP *  nlp, BMS_BLKMEM *  blkmem, SCIP_SET *  set, SCIP_STAT *  stat, SCIP_EVENTQUEUE *  eventqueue, SCIP_LP *  lp, SCIP_VAR *  var  )

static

notifies NLP that a variable was fixed, so it is removed from objective, all rows, and the NLP variables

Parameters

nlp	NLP data
blkmem	block memory
set	global SCIP settings
stat	problem statistics data
eventqueue	event queue
lp	SCIP LP, needed to release variable
var	variable that has been fixed

Definition at line 2524 of file nlp.c.

References SCIP_Nlp::indiving, nlrowRemoveFixedVar(), SCIP_Nlp::nlrows, SCIP_Nlp::nnlrows, NULL, SCIP_CALL, SCIP_OKAY, SCIPhashmapExists(), SCIPnlpDelVar(), SCIPvarIsActive(), and SCIP_Nlp::varhash.

Referenced by SCIP_DECL_EVENTEXEC().

nlpSetupNlpiIndices()

static SCIP_RETCODE nlpSetupNlpiIndices ( SCIP_NLP *  nlp, SCIP_SET *  set, SCIP_NLROW *  nlrow, int **  linidxs  )

static

creates arrays with NLPI variable indices of linear variables in a nonlinear row

Parameters

nlp	NLP data
set	global SCIP settings
nlrow	nonlinear row
linidxs	buffer to store pointer to NLPI indices of linear variables

Definition at line 2556 of file nlp.c.

References SCIP_NlRow::lincoefs, SCIP_NlRow::linvars, SCIP_NlRow::nlinvars, NULL, SCIP_CALL, SCIP_OKAY, SCIPhashmapExists(), SCIPhashmapGetImageInt(), SCIPsetAllocBufferArray, SCIPvarIsActive(), SCIP_Nlp::varhash, and SCIP_Nlp::varmap_nlp2nlpi.

Referenced by nlpFlushNlRowAdditions().

nlpEnsureVarsSolverSize()

static SCIP_RETCODE nlpEnsureVarsSolverSize ( SCIP_NLP *  nlp, BMS_BLKMEM *  blkmem, SCIP_SET *  set, int  num  )

static

ensures, that NLPI variables array of NLP can store at least num entries

Parameters

nlp	NLP data
blkmem	block memory
set	global SCIP settings
num	minimum number of entries to store

Definition at line 2598 of file nlp.c.

References BMSreallocBlockMemoryArray, NULL, SCIP_Nlp::nvars_solver, SCIP_ALLOC, SCIP_OKAY, SCIPsetCalcMemGrowSize(), SCIP_Nlp::sizevars_solver, and SCIP_Nlp::varmap_nlpi2nlp.

Referenced by nlpFlushVarAdditions().

nlpEnsureNlRowsSolverSize()

static SCIP_RETCODE nlpEnsureNlRowsSolverSize ( SCIP_NLP *  nlp, BMS_BLKMEM *  blkmem, SCIP_SET *  set, int  num  )

static

ensures, that NLPI nonlinear rows array of NLP can store at least num entries

Parameters

nlp	NLP data
blkmem	block memory
set	global SCIP settings
num	minimum number of entries to store

Definition at line 2626 of file nlp.c.

References BMSreallocBlockMemoryArray, SCIP_Nlp::nlrowmap_nlpi2nlp, SCIP_Nlp::nnlrows_solver, NULL, SCIP_ALLOC, SCIP_OKAY, SCIPsetCalcMemGrowSize(), and SCIP_Nlp::sizenlrows_solver.

Referenced by nlpFlushNlRowAdditions().

nlpFlushNlRowDeletions()

static SCIP_RETCODE nlpFlushNlRowDeletions ( SCIP_NLP *  nlp, BMS_BLKMEM *  blkmem, SCIP_SET *  set  )

static

deletes rows from the NLPI problem that have been marked as to remove

Parameters

nlp	NLP data
blkmem	block memory
set	global SCIP settings

Definition at line 2654 of file nlp.c.

References SCIP_Nlp::indiving, SCIP_NlRow::nlpiindex, SCIP_NlRow::nlpindex, SCIP_Nlp::nlrowmap_nlpi2nlp, SCIP_Nlp::nlrows, SCIP_Nlp::nnlrows, SCIP_Nlp::nnlrows_solver, NULL, SCIP_Nlp::nunflushednlrowdel, SCIP_Nlp::problem, SCIP_CALL, SCIP_OKAY, SCIPnlpiDelConsSet(), SCIPsetAllocBufferArray, SCIPsetFreeBufferArray, and SCIP_Nlp::solver.

Referenced by SCIPnlpFlush().

nlpFlushVarDeletions()

static SCIP_RETCODE nlpFlushVarDeletions ( SCIP_NLP *  nlp, BMS_BLKMEM *  blkmem, SCIP_SET *  set  )

static

deletes variables from the NLPI problem that have been marked as to remove

assumes that there are no pending row deletions (nlpFlushNlRowDeletions() should be called first)

Parameters

nlp	NLP data
blkmem	block memory
set	global SCIP settings

Definition at line 2748 of file nlp.c.

References SCIP_Nlp::indiving, NULL, SCIP_Nlp::nunflushednlrowdel, SCIP_Nlp::nunflushedvardel, SCIP_Nlp::nvars, SCIP_Nlp::nvars_solver, SCIP_Nlp::problem, SCIP_CALL, SCIP_OKAY, SCIPnlpiDelVarSet(), SCIPsetAllocBufferArray, SCIPsetFreeBufferArray, SCIP_Nlp::solver, SCIP_Nlp::varmap_nlp2nlpi, and SCIP_Nlp::varmap_nlpi2nlp.

Referenced by SCIPnlpFlush().

nlpFlushNlRowAdditions()

static SCIP_RETCODE nlpFlushNlRowAdditions ( SCIP_NLP *  nlp, BMS_BLKMEM *  blkmem, SCIP_SET *  set, SCIP_STAT *  stat  )

static

adds nonlinear rows to NLPI problem that have been added to NLP before

assumes that there are no pending variable additions or deletions (nlpFlushVarDeletions() and nlpFlushVarAdditions() should be called first)

Parameters

nlp	NLP data
blkmem	block memory
set	global SCIP settings
stat	problem statistics

Definition at line 2844 of file nlp.c.

References SCIP_NlRow::constant, SCIP_NlRow::expr, SCIP_Nlp::indiving, SCIP_NlRow::lhs, SCIP_NlRow::lincoefs, SCIP_NlRow::name, SCIP_NlRow::nlinvars, nlpEnsureNlRowsSolverSize(), SCIP_NlRow::nlpiindex, nlpSetupNlpiIndices(), SCIP_Nlp::nlrowmap_nlpi2nlp, SCIP_Nlp::nlrows, SCIP_Nlp::nnlrows, SCIP_Nlp::nnlrows_solver, NULL, SCIP_Nlp::nunflushednlrowadd, SCIP_Nlp::nunflushedvaradd, SCIP_Nlp::nunflushedvardel, SCIP_Nlp::problem, SCIP_NlRow::rhs, SCIP_CALL, SCIP_OKAY, SCIP_Real, SCIPexprCopy(), SCIPexprRelease(), SCIPnlpiAddConstraints(), SCIPsetAllocBufferArray, SCIPsetFreeBufferArray, SCIPsetIsEQ(), SCIPsetIsInfinity(), and SCIP_Nlp::solver.

Referenced by SCIPnlpFlush().

nlpFlushVarAdditions()

static SCIP_RETCODE nlpFlushVarAdditions ( SCIP_NLP *  nlp, BMS_BLKMEM *  blkmem, SCIP_SET *  set  )

static

adds variables to NLPI problem that have been added to NLP before

may set nlp->objflushed to FALSE if a variable with nonzero objective coefficient is added to the NLPI problem

Parameters

nlp	NLP data
blkmem	block memory
set	global SCIP settings

Definition at line 2992 of file nlp.c.

References FALSE, SCIP_Nlp::indiving, nlpEnsureVarsSolverSize(), NULL, SCIP_Nlp::nunflushedvaradd, SCIP_Nlp::nvars, SCIP_Nlp::nvars_solver, SCIP_Nlp::objflushed, SCIP_Nlp::problem, SCIP_CALL, SCIP_OKAY, SCIP_Real, SCIPnlpiAddVars(), SCIPsetAllocBufferArray, SCIPsetFreeBufferArray, SCIPsetIsZero(), SCIPvarGetLbLocal(), SCIPvarGetName(), SCIPvarGetObj(), SCIPvarGetUbLocal(), SCIP_Nlp::solver, SCIP_Nlp::varmap_nlp2nlpi, SCIP_Nlp::varmap_nlpi2nlp, and SCIP_Nlp::vars.

Referenced by SCIPnlpFlush().

nlpFlushObjective()

static SCIP_RETCODE nlpFlushObjective ( SCIP_NLP *  nlp, BMS_BLKMEM *  blkmem, SCIP_SET *  set  )

static

updates the objective in the NLPI problem, if necessary

assumes that there are no unflushed variable additions or deletions (nlpFlushVarDeletions() and nlpFlushVarAdditions() should be called first)

Parameters

nlp	NLP data
blkmem	block memory
set	global SCIP settings

Definition at line 3081 of file nlp.c.

References SCIP_Nlp::indiving, NULL, SCIP_Nlp::nunflushedvaradd, SCIP_Nlp::nunflushedvardel, SCIP_Nlp::nvars_solver, SCIP_Nlp::objflushed, SCIP_Nlp::problem, SCIP_CALL, SCIP_OKAY, SCIP_Real, SCIPnlpiSetObjective(), SCIPsetAllocBufferArray, SCIPsetFreeBufferArray, SCIPsetIsZero(), SCIPvarGetObj(), SCIP_Nlp::solver, TRUE, SCIP_Nlp::varmap_nlpi2nlp, and SCIP_Nlp::vars.

Referenced by SCIPnlpFlush().

nlpSolve()

static SCIP_RETCODE nlpSolve ( SCIP_NLP *  nlp, BMS_BLKMEM *  blkmem, SCIP_SET *  set, SCIP_MESSAGEHDLR *  messagehdlr, SCIP_STAT *  stat, SCIP_PRIMAL *  primal, SCIP_TREE *  tree, SCIP_NLPPARAM *  nlpparam  )

static

solves the NLP (or diving NLP), assuming it has been flushed already

Parameters

nlp	NLP data
blkmem	block memory buffers
set	global SCIP settings
messagehdlr	message handler
stat	problem statistics
primal	primal data
tree	branch and bound tree
nlpparam	NLP solve parameters

Definition at line 3139 of file nlp.c.

References BMSclearMemoryArray, SCIP_Nlp::divingobj, SCIP_NlRow::dualsol, SCIP_Nlp::haveinitguess, SCIP_Nlp::indiving, SCIP_Nlp::initialguess, SCIP_NlRow::nlpiindex, SCIP_Stat::nlpsoltime, SCIP_Nlp::nlrows, SCIP_Stat::nnlps, SCIP_Nlp::nnlrows, NULL, SCIP_Nlp::nvars, SCIP_Nlp::nvars_solver, SCIP_Nlp::primalsolobjval, SCIP_Nlp::problem, SCIP_CALL, SCIP_INVALID, SCIP_NLPSOLSTAT_FEASIBLE, SCIP_NLPSOLSTAT_GLOBOPT, SCIP_NLPSOLSTAT_LOCINFEASIBLE, SCIP_NLPSOLSTAT_LOCOPT, SCIP_NLPSOLSTAT_UNKNOWN, SCIP_NLPTERMSTAT_OTHER, SCIP_OKAY, SCIP_Real, SCIPclockStart(), SCIPclockStop(), SCIPmessagePrintWarning(), SCIPnlpiGetSolstat(), SCIPnlpiGetSolution(), SCIPnlpiGetTermstat(), SCIPnlpiSetInitialGuess(), SCIPnlpiSolve(), SCIPnlrowGetNLPActivity(), SCIPsetAllocBufferArray, SCIPsetFreeBufferArray, SCIPsetIsFeasGE(), SCIPsetIsFeasLE(), SCIPsetIsInfinity(), SCIPvarGetLbLocal(), SCIPvarGetObj(), SCIPvarGetUbLocal(), SCIPvarSetNLPSol(), SCIP_Nlp::solstat, SCIP_Nlp::solver, SCIP_Nlp::termstat, SCIP_Nlp::varlbdualvals, SCIP_Nlp::varmap_nlp2nlpi, SCIP_Nlp::varmap_nlpi2nlp, SCIP_Nlp::vars, SCIP_Nlp::varubdualvals, and SCIP_NlpParam::warmstart.

Referenced by SCIPnlpSolve().

nlpCalcFracVars()

static SCIP_RETCODE nlpCalcFracVars ( SCIP_NLP *  nlp, BMS_BLKMEM *  blkmem, SCIP_SET *  set, SCIP_STAT *  stat  )

static

assembles list of fractional variables in last NLP solution

Parameters

nlp	NLP data
blkmem	block memory buffers
set	global SCIP settings
stat	problem statistics

Definition at line 3300 of file nlp.c.

References BMSallocBlockMemoryArray, BMSreallocBlockMemoryArray, SCIP_Nlp::fracvars, SCIP_Nlp::fracvarsfrac, SCIP_Nlp::fracvarssize, SCIP_Nlp::fracvarssol, SCIP_Nlp::nfracvars, SCIP_Stat::nnlps, SCIP_Nlp::npriofracvars, NULL, SCIP_Nlp::nvars, SCIP_ALLOC, SCIP_INVALID, SCIP_LONGINT_FORMAT, SCIP_NLPSOLSTAT_LOCINFEASIBLE, SCIP_OKAY, SCIP_Real, SCIPnlpHasSolution(), SCIPsetCalcMemGrowSize(), SCIPsetDebugMsg, SCIPsetFeasFrac(), SCIPsetFeastol(), SCIPsetIsFeasFracIntegral(), SCIPsetIsGE(), SCIPvarGetBranchPriority(), SCIPvarGetLbLocal(), SCIPvarGetName(), SCIPvarGetNLPSol(), SCIPvarGetUbLocal(), SCIPvarIsNonimpliedIntegral(), SCIP_Nlp::solstat, SCIP_Nlp::validfracvars, and SCIP_Nlp::vars.

Referenced by SCIPnlpGetFracVars().

SCIPnlpInclude()

SCIP_RETCODE SCIPnlpInclude	(	SCIP_SET *	set,
		BMS_BLKMEM *	blkmem
	)

includes event handler that is used by NLP

Parameters

set	global SCIP settings
blkmem	block memory

Definition at line 3511 of file nlp.c.

References EVENTHDLR_DESC, EVENTHDLR_NAME, NULL, SCIP_CALL, SCIP_INVALIDDATA, SCIP_OKAY, SCIP_STAGE_INIT, SCIPerrorMessage, SCIPeventhdlrCreate(), SCIPsetFindEventhdlr(), and SCIPsetIncludeEventhdlr().

Referenced by doScipCreate().

SCIPnlpCreate()

SCIP_RETCODE SCIPnlpCreate	(	SCIP_NLP **	nlp,
		BMS_BLKMEM *	blkmem,
		SCIP_SET *	set,
		SCIP_STAT *	stat,
		const char *	name,
		int	nvars_estimate
	)

construct a new empty NLP

Parameters

nlp	NLP handler, call by reference
blkmem	block memory
set	global SCIP settings
stat	problem statistics
name	problem name
nvars_estimate	an estimate on the number of variables that may be added to the NLP later

Definition at line 3537 of file nlp.c.

References BMSallocMemory, BMSduplicateBlockMemoryArray, EVENTHDLR_NAME, FALSE, NULL, SCIP_ALLOC, SCIP_CALL, SCIP_EVENTTYPE_VARADDED, SCIP_EVENTTYPE_VARDELETED, SCIP_INVALID, SCIP_NLPSOLSTAT_UNKNOWN, SCIP_NLPTERMSTAT_OTHER, SCIP_OKAY, SCIP_PLUGINNOTFOUND, SCIPerrorMessage, SCIPeventfilterAdd(), SCIPhashmapCreate(), SCIPnlpiCreateProblem(), SCIPsetFindEventhdlr(), SCIPsetFindNlpi(), SCIPsetSortNlpis(), and TRUE.

Referenced by initSolve().

SCIPnlpFree()

SCIP_RETCODE SCIPnlpFree	(	SCIP_NLP **	nlp,
		BMS_BLKMEM *	blkmem,
		SCIP_SET *	set,
		SCIP_STAT *	stat,
		SCIP_EVENTQUEUE *	eventqueue,
		SCIP_LP *	lp
	)

frees NLP data object

Parameters

nlp	pointer to NLP data object
blkmem	block memory
set	global SCIP settings
stat	problem statistics
eventqueue	event queue
lp	SCIP LP, needed for releasing variables

Definition at line 3661 of file nlp.c.

References BMSfreeBlockMemoryArray, BMSfreeBlockMemoryArrayNull, BMSfreeMemory, NULL, SCIP_CALL, SCIP_EVENTTYPE_VARADDED, SCIP_EVENTTYPE_VARDELETED, SCIP_OKAY, SCIPeventfilterDel(), SCIPhashmapFree(), SCIPnlpiFreeProblem(), and SCIPnlpReset().

Referenced by freeReoptSolve(), and freeSolve().

SCIPnlpReset()

SCIP_RETCODE SCIPnlpReset	(	SCIP_NLP *	nlp,
		BMS_BLKMEM *	blkmem,
		SCIP_SET *	set,
		SCIP_STAT *	stat,
		SCIP_EVENTQUEUE *	eventqueue,
		SCIP_LP *	lp
	)

resets the NLP to the empty NLP by removing all variables and rows from NLP, releasing all rows, and flushing the changes to the NLP solver

Parameters

nlp	NLP data
blkmem	block memory
set	global SCIP settings
stat	problem statistics data
eventqueue	event queue
lp	SCIP LP, needed for releasing variables

Definition at line 3721 of file nlp.c.

References BMSfreeBlockMemoryArrayNull, FALSE, SCIP_Nlp::haveinitguess, SCIP_Nlp::indiving, SCIP_Nlp::initialguess, nlpDelNlRowPos(), nlpDelVarPos(), SCIP_Nlp::nnlrows, NULL, SCIP_Nlp::nvars, SCIP_CALL, SCIP_NLPSOLSTAT_UNKNOWN, SCIP_NLPTERMSTAT_OTHER, SCIP_OKAY, SCIPnlpEndDive(), SCIPnlpFlush(), SCIP_Nlp::sizevars, SCIP_Nlp::solstat, and SCIP_Nlp::termstat.

Referenced by SCIPnlpFree().

SCIPnlpHasCurrentNodeNLP()

SCIP_Bool SCIPnlpHasCurrentNodeNLP

(

SCIP_NLP *

nlp

)

currently a dummy function that always returns TRUE

Parameters

nlp

NLP data

Definition at line 3763 of file nlp.c.

References NULL, and TRUE.

Referenced by SCIPgetNlRowActivity(), SCIPgetNlRowFeasibility(), SCIPgetNlRowSolActivity(), SCIPgetNlRowSolFeasibility(), and SCIPrecalcNlRowActivity().

SCIPnlpEnsureVarsSize()

SCIP_RETCODE SCIPnlpEnsureVarsSize	(	SCIP_NLP *	nlp,
		BMS_BLKMEM *	blkmem,
		SCIP_SET *	set,
		int	num
	)

ensures, that variables array of NLP can store at least num entries

Parameters

nlp	NLP data
blkmem	block memory
set	global SCIP settings
num	minimum number of entries to store

Definition at line 3772 of file nlp.c.

References BMSreallocBlockMemoryArray, SCIP_Nlp::initialguess, NULL, SCIP_Nlp::nvars, SCIP_ALLOC, SCIP_OKAY, SCIPsetCalcMemGrowSize(), SCIP_Nlp::sizevars, SCIP_Nlp::varlbdualvals, SCIP_Nlp::varmap_nlp2nlpi, SCIP_Nlp::vars, and SCIP_Nlp::varubdualvals.

Referenced by nlpAddVars().

SCIPnlpAddVar()

SCIP_RETCODE SCIPnlpAddVar	(	SCIP_NLP *	nlp,
		BMS_BLKMEM *	blkmem,
		SCIP_SET *	set,
		SCIP_VAR *	var
	)

adds a variable to the NLP and captures the variable

Parameters

nlp	NLP data
blkmem	block memory
set	global SCIP settings
var	variable

Definition at line 3806 of file nlp.c.

References SCIP_Nlp::indiving, nlpAddVars(), NULL, SCIP_CALL, SCIP_ERROR, SCIP_OKAY, SCIPerrorMessage, SCIPhashmapExists(), SCIPvarIsTransformed(), and SCIP_Nlp::varhash.

Referenced by SCIP_DECL_EVENTEXEC().

SCIPnlpAddVars()

SCIP_RETCODE SCIPnlpAddVars	(	SCIP_NLP *	nlp,
		BMS_BLKMEM *	blkmem,
		SCIP_SET *	set,
		int	nvars,
		SCIP_VAR **	vars
	)

adds a set of variables to the NLP and captures the variables

Parameters

nlp	NLP data
blkmem	block memory
set	global SCIP settings
nvars	number of variables to add
vars	variables to add

Definition at line 3832 of file nlp.c.

References SCIP_Nlp::indiving, nlpAddVars(), NULL, SCIP_CALL, SCIP_ERROR, SCIP_OKAY, and SCIPerrorMessage.

Referenced by initSolve().

SCIPnlpDelVar()

SCIP_RETCODE SCIPnlpDelVar	(	SCIP_NLP *	nlp,
		BMS_BLKMEM *	blkmem,
		SCIP_SET *	set,
		SCIP_STAT *	stat,
		SCIP_EVENTQUEUE *	eventqueue,
		SCIP_LP *	lp,
		SCIP_VAR *	var
	)

deletes a variable from the NLP and releases the variable

Parameters

nlp	NLP data
blkmem	block memory
set	global SCIP settings
stat	problem statistics data
eventqueue	event queue
lp	SCIP LP, needed to release variable
var	variable

Definition at line 3857 of file nlp.c.

References SCIP_Nlp::indiving, nlpDelVarPos(), NULL, SCIP_CALL, SCIP_ERROR, SCIP_OKAY, SCIPerrorMessage, SCIPhashmapExists(), SCIPhashmapGetImageInt(), SCIPvarGetName(), and SCIP_Nlp::varhash.

Referenced by nlpRemoveFixedVar(), and SCIP_DECL_EVENTEXEC().

SCIPnlpEnsureNlRowsSize()

SCIP_RETCODE SCIPnlpEnsureNlRowsSize	(	SCIP_NLP *	nlp,
		BMS_BLKMEM *	blkmem,
		SCIP_SET *	set,
		int	num
	)

ensures, that nonlinear rows array of NLP can store at least num entries

Parameters

nlp	NLP data
blkmem	block memory
set	global SCIP settings
num	minimum number of entries to store

Definition at line 3894 of file nlp.c.

References BMSreallocBlockMemoryArray, SCIP_Nlp::nlrows, SCIP_Nlp::nnlrows, NULL, SCIP_ALLOC, SCIP_OKAY, SCIPsetCalcMemGrowSize(), and SCIP_Nlp::sizenlrows.

Referenced by nlpAddNlRows().

SCIPnlpAddNlRow()

SCIP_RETCODE SCIPnlpAddNlRow	(	SCIP_NLP *	nlp,
		BMS_BLKMEM *	blkmem,
		SCIP_SET *	set,
		SCIP_STAT *	stat,
		SCIP_NLROW *	nlrow
	)

adds a nonlinear row to the NLP and captures it

all variables of the row need to be present in the NLP

Parameters

nlp	NLP data
blkmem	block memory
set	global SCIP settings
stat	problem statistics data
nlrow	nonlinear row

Definition at line 3924 of file nlp.c.

References SCIP_Nlp::indiving, nlpAddNlRows(), NULL, SCIP_CALL, SCIP_ERROR, SCIP_OKAY, and SCIPerrorMessage.

Referenced by SCIPaddNlRow().

SCIPnlpAddNlRows()

SCIP_RETCODE SCIPnlpAddNlRows	(	SCIP_NLP *	nlp,
		BMS_BLKMEM *	blkmem,
		SCIP_SET *	set,
		SCIP_STAT *	stat,
		int	nnlrows,
		SCIP_NLROW **	nlrows
	)

adds nonlinear rows to the NLP and captures them

all variables of the row need to be present in the NLP

Parameters

nlp	NLP data
blkmem	block memory
set	global SCIP settings
stat	problem statistics data
nnlrows	number of rows to add
nlrows	rows to add

Definition at line 3950 of file nlp.c.

References SCIP_Nlp::indiving, nlpAddNlRows(), NULL, SCIP_CALL, SCIP_ERROR, SCIP_OKAY, and SCIPerrorMessage.

SCIPnlpDelNlRow()

SCIP_RETCODE SCIPnlpDelNlRow	(	SCIP_NLP *	nlp,
		BMS_BLKMEM *	blkmem,
		SCIP_SET *	set,
		SCIP_STAT *	stat,
		SCIP_NLROW *	nlrow
	)

deletes a nonlinear row from the NLP

does nothing if nonlinear row is not in NLP

Parameters

nlp	NLP data
blkmem	block memory
set	global SCIP settings
stat	problem statistics data
nlrow	nonlinear row

Definition at line 3980 of file nlp.c.

References SCIP_Nlp::indiving, nlpDelNlRowPos(), SCIP_NlRow::nlpindex, SCIP_Nlp::nnlrows, NULL, SCIP_CALL, SCIP_ERROR, SCIP_OKAY, and SCIPerrorMessage.

Referenced by SCIPdelNlRow().

SCIPnlpFlush()

SCIP_RETCODE SCIPnlpFlush	(	SCIP_NLP *	nlp,
		BMS_BLKMEM *	blkmem,
		SCIP_SET *	set,
		SCIP_STAT *	stat
	)

applies all cached changes to the NLP solver

Parameters

nlp	current NLP data
blkmem	block memory
set	global SCIP settings
stat	problem statistics

Definition at line 4012 of file nlp.c.

References SCIP_Nlp::indiving, nlpFlushNlRowAdditions(), nlpFlushNlRowDeletions(), nlpFlushObjective(), nlpFlushVarAdditions(), nlpFlushVarDeletions(), SCIP_Nlp::nnlrows, SCIP_Nlp::nnlrows_solver, NULL, SCIP_Nlp::nunflushednlrowadd, SCIP_Nlp::nunflushednlrowdel, SCIP_Nlp::nunflushedvaradd, SCIP_Nlp::nunflushedvardel, SCIP_Nlp::nvars, SCIP_Nlp::nvars_solver, SCIP_Nlp::objflushed, SCIP_CALL, SCIP_ERROR, SCIP_OKAY, SCIPerrorMessage, and TRUE.

Referenced by SCIPflushNLP(), SCIPnlpReset(), SCIPnlpSolve(), and SCIPnlpStartDive().

SCIPnlpSolve()

SCIP_RETCODE SCIPnlpSolve	(	SCIP_NLP *	nlp,
		BMS_BLKMEM *	blkmem,
		SCIP_SET *	set,
		SCIP_MESSAGEHDLR *	messagehdlr,
		SCIP_STAT *	stat,
		SCIP_PRIMAL *	primal,
		SCIP_TREE *	tree,
		SCIP_NLPPARAM *	nlpparam
	)

solves the NLP or diving NLP

Parameters

nlp	NLP data
blkmem	block memory buffers
set	global SCIP settings
messagehdlr	message handler
stat	problem statistics
primal	primal data
tree	branch and bound tree
nlpparam	NLP solve parameters

Definition at line 4050 of file nlp.c.

References SCIP_Nlp::indiving, nlpSolve(), NULL, SCIP_CALL, SCIP_OKAY, and SCIPnlpFlush().

Referenced by SCIPsolveNLPParam().

SCIPnlpGetObjval()

SCIP_Real SCIPnlpGetObjval

(

SCIP_NLP *

nlp

)

gets objective value of current NLP

Parameters

nlp	current NLP data

Definition at line 4077 of file nlp.c.

References NULL, and SCIP_Nlp::primalsolobjval.

Referenced by SCIPgetNLPObjval(), and SCIPsolLinkNLPSol().

SCIPnlpGetPseudoObjval()

SCIP_RETCODE SCIPnlpGetPseudoObjval	(	SCIP_NLP *	nlp,
		BMS_BLKMEM *	blkmem,
		SCIP_SET *	set,
		SCIP_STAT *	stat,
		SCIP_PROB *	prob,
		SCIP_PRIMAL *	primal,
		SCIP_TREE *	tree,
		SCIP_LP *	lp,
		SCIP_Real *	pseudoobjval
	)

gives current pseudo objective value

Parameters

nlp	current NLP data
blkmem	block memory
set	global SCIP settings
stat	problem statistics data
prob	SCIP problem
primal	primal data
tree	branch and bound tree
lp	SCIP LP
pseudoobjval	buffer to store pseudo objective value

Definition at line 4087 of file nlp.c.

References SCIP_Nlp::divingobj, SCIP_Nlp::indiving, NULL, SCIP_Nlp::nvars, SCIP_CALL, SCIP_OKAY, SCIPnlrowGetPseudoActivity(), SCIPvarGetBestBoundLocal(), SCIPvarGetObj(), and SCIP_Nlp::vars.

SCIPnlpGetFracVars()

SCIP_RETCODE SCIPnlpGetFracVars	(	SCIP_NLP *	nlp,
		BMS_BLKMEM *	blkmem,
		SCIP_SET *	set,
		SCIP_STAT *	stat,
		SCIP_VAR ***	fracvars,
		SCIP_Real **	fracvarssol,
		SCIP_Real **	fracvarsfrac,
		int *	nfracvars,
		int *	npriofracvars
	)

gets fractional variables of last NLP solution along with solution values and fractionalities

Parameters

nlp	NLP data structure
blkmem	block memory
set	global SCIP settings
stat	problem statistics
fracvars	pointer to store the array of NLP fractional variables, or NULL
fracvarssol	pointer to store the array of NLP fractional variables solution values, or NULL
fracvarsfrac	pointer to store the array of NLP fractional variables fractionalities, or NULL
nfracvars	pointer to store the number of NLP fractional variables , or NULL
npriofracvars	pointer to store the number of NLP fractional variables with maximal branching priority, or NULL

Definition at line 4121 of file nlp.c.

References SCIP_Nlp::fracvars, SCIP_Nlp::fracvarsfrac, SCIP_Nlp::fracvarssol, SCIP_Nlp::nfracvars, nlpCalcFracVars(), SCIP_Nlp::npriofracvars, NULL, SCIP_CALL, and SCIP_OKAY.

Referenced by SCIPgetNLPFracVars().

SCIPnlpRemoveRedundantNlRows()

SCIP_RETCODE SCIPnlpRemoveRedundantNlRows	(	SCIP_NLP *	nlp,
		BMS_BLKMEM *	blkmem,
		SCIP_SET *	set,
		SCIP_STAT *	stat
	)

removes all redundant nonlinear rows

Parameters

nlp	current NLP data
blkmem	block memory buffers
set	global SCIP settings
stat	problem statistics

Definition at line 4155 of file nlp.c.

References SCIP_Nlp::indiving, nlpDelNlRowPos(), SCIP_Nlp::nlrows, SCIP_Nlp::nnlrows, NULL, SCIP_Bool, SCIP_CALL, SCIP_ERROR, SCIP_OKAY, SCIPerrorMessage, SCIPnlrowIsRedundant(), and SCIP_Nlp::solstat.

SCIPnlpSetInitialGuess()

SCIP_RETCODE SCIPnlpSetInitialGuess	(	SCIP_SET *	set,
		SCIP_NLP *	nlp,
		BMS_BLKMEM *	blkmem,
		SCIP_Real *	initguess
	)

set initial guess (approximate primal solution) for next solve

array initguess must be NULL or have length at least SCIPnlpGetNVars()

Parameters

set	global SCIP settings
nlp	current NLP data
blkmem	block memory buffers
initguess	new initial guess, or NULL to clear previous one

Definition at line 4201 of file nlp.c.

References BMSallocBlockMemoryArray, BMScopyMemoryArray, FALSE, SCIP_Nlp::haveinitguess, SCIP_Nlp::initialguess, NULL, SCIP_Nlp::nvars, SCIP_Nlp::problem, SCIP_ALLOC, SCIP_CALL, SCIP_OKAY, SCIPnlpiSetInitialGuess(), SCIP_Nlp::sizevars, SCIP_Nlp::solver, and TRUE.

Referenced by SCIPsetNLPInitialGuess(), and SCIPsetNLPInitialGuessSol().

SCIPnlpWrite()

SCIP_RETCODE SCIPnlpWrite	(	SCIP_NLP *	nlp,
		BMS_BLKMEM *	blkmem,
		SCIP_SET *	set,
		SCIP_STAT *	stat,
		SCIP_MESSAGEHDLR *	messagehdlr,
		const char *	fname
	)

writes NLP to a file

Parameters

nlp	current NLP data
blkmem	block memory buffers
set	global SCIP settings
stat	problem statistics
messagehdlr	message handler
fname	file name

Definition at line 4237 of file nlp.c.

References SCIP_Nlp::name, SCIP_Nlp::nlrows, SCIP_Nlp::nnlrows, NULL, SCIP_Nlp::nvars, SCIP_CALL, SCIP_CALL_TERMINATE, SCIP_FILECREATEERROR, SCIP_OKAY, SCIPerrorMessage, SCIPmessageFPrintInfo(), SCIPnlrowPrint(), SCIPvarPrint(), and SCIP_Nlp::vars.

Referenced by SCIPwriteNLP().

SCIPnlpGetVars()

SCIP_VAR ** SCIPnlpGetVars

(

SCIP_NLP *

nlp

)

gets array with variables of the NLP

Parameters

nlp	current NLP data

Definition at line 4292 of file nlp.c.

References NULL, and SCIP_Nlp::vars.

Referenced by SCIPgetNLPVars(), SCIPgetNLPVarsData(), SCIPsetNLPInitialGuessSol(), and SCIPsolLinkNLPSol().

SCIPnlpGetNVars()

int SCIPnlpGetNVars

(

SCIP_NLP *

nlp

)

gets current number of variables in NLP

Parameters

nlp	current NLP data

Definition at line 4302 of file nlp.c.

References NULL, and SCIP_Nlp::nvars.

Referenced by SCIPgetNLPVarsData(), SCIPgetNNLPVars(), SCIPsetNLPInitialGuessSol(), and SCIPsolLinkNLPSol().

SCIPnlpGetVarsNonlinearity()

SCIP_RETCODE SCIPnlpGetVarsNonlinearity	(	SCIP_NLP *	nlp,
		BMS_BLKMEM *	blkmem,
		SCIP_SET *	set,
		SCIP_STAT *	stat,
		int *	nlcount
	)

computes for each variables the number of NLP rows in which the variable appears in a nonlinear var

Parameters

nlp	current NLP data
blkmem	block memory buffers
set	global SCIP settings
stat	problem statistics
nlcount	an array of length at least SCIPnlpGetNVars() to store nonlinearity counts of variables

Definition at line 4312 of file nlp.c.

References BMSclearMemoryArray, SCIP_NlRow::expr, FALSE, SCIP_Nlp::nlrows, SCIP_Nlp::nnlrows, NULL, SCIP_Nlp::nvars, SCIP_CALL, SCIP_EXPRITER_DFS, SCIP_OKAY, SCIPexprIsVar(), SCIPexpriterCreate(), SCIPexpriterFree(), SCIPexpriterGetNext(), SCIPexpriterInit(), SCIPexpriterIsEnd(), SCIPgetVarExprVar(), SCIPhashmapExists(), SCIPhashmapGetImageInt(), and SCIP_Nlp::varhash.

Referenced by SCIPgetNLPVarsNonlinearity().

SCIPnlpHasContinuousNonlinearity()

SCIP_RETCODE SCIPnlpHasContinuousNonlinearity	(	SCIP_NLP *	nlp,
		BMS_BLKMEM *	blkmem,
		SCIP_SET *	set,
		SCIP_STAT *	stat,
		SCIP_Bool *	result
	)

indicates whether there exists a row that contains a continuous variable in a nonlinear term

Note

The method may have to touch every row and nonlinear term to compute its result.

Parameters

nlp	current NLP data
blkmem	block memory buffers
set	global SCIP settings
stat	problem statistics
result	buffer to store whether continuous variable present in an expression of any row

Definition at line 4366 of file nlp.c.

References SCIP_NlRow::expr, FALSE, SCIP_Nlp::nlrows, SCIP_Nlp::nnlrows, NULL, SCIP_CALL, SCIP_EXPRITER_DFS, SCIP_OKAY, SCIPexprIsVar(), SCIPexpriterCreate(), SCIPexpriterFree(), SCIPexpriterGetNext(), SCIPexpriterInit(), SCIPexpriterIsEnd(), SCIPexpriterRestartDFS(), SCIPgetVarExprVar(), SCIPvarIsIntegral(), and TRUE.

Referenced by SCIPhasNLPContinuousNonlinearity().

SCIPnlpGetVarsLbDualsol()

SCIP_Real * SCIPnlpGetVarsLbDualsol

(

SCIP_NLP *

nlp

)

gives dual solution values associated with lower bounds of NLP variables

Parameters

nlp	current NLP data

Definition at line 4409 of file nlp.c.

References NULL, and SCIP_Nlp::varlbdualvals.

Referenced by SCIPgetNLPVarsLbDualsol().

SCIPnlpGetVarsUbDualsol()

SCIP_Real * SCIPnlpGetVarsUbDualsol

(

SCIP_NLP *

nlp

)

gives dual solution values associated with upper bounds of NLP variables

Parameters

nlp	current NLP data

Definition at line 4419 of file nlp.c.

References NULL, and SCIP_Nlp::varubdualvals.

Referenced by SCIPgetNLPVarsUbDualsol().

SCIPnlpGetNlRows()

SCIP_NLROW ** SCIPnlpGetNlRows

(

SCIP_NLP *

nlp

)

gets array with nonlinear rows of the NLP

Parameters

nlp	current NLP data

Definition at line 4429 of file nlp.c.

References SCIP_Nlp::nlrows, and NULL.

Referenced by SCIPgetNLPNlRows(), and SCIPgetNLPNlRowsData().

SCIPnlpGetNNlRows()

int SCIPnlpGetNNlRows

(

SCIP_NLP *

nlp

)

gets current number of nonlinear rows in NLP

Parameters

nlp	current NLP data

Definition at line 4439 of file nlp.c.

References SCIP_Nlp::nnlrows, and NULL.

Referenced by SCIPgetNLPNlRowsData(), and SCIPgetNNLPNlRows().

SCIPnlpGetNlRowsStat()

void SCIPnlpGetNlRowsStat	(	SCIP_NLP *	nlp,
		int *	nlinear,
		int *	nconvexineq,
		int *	nnonconvexineq,
		int *	nnonlineareq
	)

gets statistics on convexity of nonlinear rows in NLP

Parameters

nlp	current NLP data
nlinear	buffer to store number of linear rows in NLP, or NULL
nconvexineq	buffer to store number of convex inequalities in NLP, or NULL
nnonconvexineq	buffer to store number of nonconvex inequalities in NLP, or NULL
nnonlineareq	buffer to store number of nonlinear equalities or ranged rows in NLP, or NULL

Definition at line 4449 of file nlp.c.

References SCIP_Nlp::nnlrowconvexineq, SCIP_Nlp::nnlrowlinear, SCIP_Nlp::nnlrownonconvexineq, SCIP_Nlp::nnlrownonlineareq, and NULL.

Referenced by SCIPgetNLPNlRowsStat().

SCIPnlpGetNLPI()

SCIP_NLPI * SCIPnlpGetNLPI

(

SCIP_NLP *

nlp

)

gets the NLP solver interface

Parameters

nlp	current NLP data

Definition at line 4473 of file nlp.c.

References NULL, and SCIP_Nlp::solver.

Referenced by SCIPgetNLPI().

SCIPnlpGetNLPIProblem()

SCIP_NLPIPROBLEM * SCIPnlpGetNLPIProblem

(

SCIP_NLP *

nlp

)

gets the NLP problem in the solver interface

Parameters

nlp	current NLP data

Definition at line 4483 of file nlp.c.

References NULL, and SCIP_Nlp::problem.

Referenced by SCIPgetNLPI().

SCIPnlpIsDiving()

SCIP_Bool SCIPnlpIsDiving

(

SCIP_NLP *

nlp

)

indicates whether NLP is currently in diving mode

Parameters

nlp	current NLP data

Definition at line 4493 of file nlp.c.

References SCIP_Nlp::indiving, and NULL.

SCIPnlpGetSolstat()

SCIP_NLPSOLSTAT SCIPnlpGetSolstat

(

SCIP_NLP *

nlp

)

gets solution status of current NLP

Parameters

nlp	current NLP data

Definition at line 4503 of file nlp.c.

References NULL, and SCIP_Nlp::solstat.

Referenced by SCIP_DECL_SEPAEXECLP(), SCIPgetNLPSolstat(), and SCIPlinkNLPSol().

SCIPnlpGetTermstat()

SCIP_NLPTERMSTAT SCIPnlpGetTermstat

(

SCIP_NLP *

nlp

)

gets termination status of last NLP solve

Parameters

nlp	current NLP data

Definition at line 4513 of file nlp.c.

References NULL, and SCIP_Nlp::termstat.

Referenced by SCIPgetNLPTermstat().

SCIPnlpGetStatistics()

SCIP_RETCODE SCIPnlpGetStatistics	(	SCIP_SET *	set,
		SCIP_NLP *	nlp,
		SCIP_NLPSTATISTICS *	statistics
	)

gives statistics (number of iterations, solving time, ...) of last NLP solve

Parameters

set	global SCIP settings
nlp	pointer to NLP datastructure
statistics	pointer to store statistics

Definition at line 4523 of file nlp.c.

References NULL, SCIP_Nlp::problem, SCIP_CALL, SCIP_OKAY, SCIPnlpiGetStatistics(), and SCIP_Nlp::solver.

Referenced by SCIPgetNLPStatistics().

SCIPnlpHasSolution()

SCIP_Bool SCIPnlpHasSolution

(

SCIP_NLP *

nlp

)

indicates whether a solution for the current NLP is available

The solution may be optimal, feasible, or infeasible. Thus, returns whether the NLP solution status is at most SCIP_NLPSOLSTAT_LOCINFEASIBLE.

Parameters

nlp	current NLP data

Definition at line 4544 of file nlp.c.

References NULL, SCIP_NLPSOLSTAT_LOCINFEASIBLE, and SCIP_Nlp::solstat.

Referenced by nlpCalcFracVars(), SCIPcreateNLPSol(), SCIPgetNlRowActivity(), SCIPgetNlRowFeasibility(), SCIPgetNlRowSolActivity(), SCIPgetNlRowSolFeasibility(), SCIPhasNLPSolution(), SCIPrecalcNlRowActivity(), and SCIPsolLinkNLPSol().

SCIPnlpStartDive()

SCIP_RETCODE SCIPnlpStartDive	(	SCIP_NLP *	nlp,
		BMS_BLKMEM *	blkmem,
		SCIP_SET *	set,
		SCIP_STAT *	stat
	)

signals start of diving

Parameters

nlp	current NLP data
blkmem	block memory buffers
set	global SCIP settings
stat	problem statistics

Definition at line 4558 of file nlp.c.

References SCIP_Nlp::indiving, NULL, SCIP_CALL, SCIP_ERROR, SCIP_OKAY, SCIPerrorMessage, SCIPnlpFlush(), SCIP_Nlp::solver, and TRUE.

Referenced by SCIPstartDiveNLP().

SCIPnlpEndDive()

SCIP_RETCODE SCIPnlpEndDive	(	SCIP_NLP *	nlp,
		BMS_BLKMEM *	blkmem,
		SCIP_SET *	set,
		SCIP_STAT *	stat
	)

resets the bound and objective changes made during diving and disables diving mode

Parameters

nlp	current NLP data
blkmem	block memory
set	global SCIP settings
stat	problem statistics data

Definition at line 4589 of file nlp.c.

References SCIP_Nlp::divingobj, FALSE, SCIP_Nlp::indiving, NULL, SCIP_Nlp::nvars, SCIP_Nlp::nvars_solver, SCIP_Nlp::objflushed, SCIP_Nlp::primalsolobjval, SCIP_Nlp::problem, SCIP_CALL, SCIP_ERROR, SCIP_INVALID, SCIP_NLPSOLSTAT_UNKNOWN, SCIP_NLPTERMSTAT_OTHER, SCIP_OKAY, SCIP_Real, SCIPerrorMessage, SCIPnlpiChgVarBounds(), SCIPnlrowRelease(), SCIPsetAllocBufferArray, SCIPsetFreeBufferArray, SCIPvarGetLbLocal(), SCIPvarGetUbLocal(), SCIP_Nlp::solstat, SCIP_Nlp::solver, SCIP_Nlp::termstat, SCIP_Nlp::varmap_nlpi2nlp, and SCIP_Nlp::vars.

Referenced by SCIPendDiveNLP(), and SCIPnlpReset().

SCIPnlpChgVarObjDive()

SCIP_RETCODE SCIPnlpChgVarObjDive	(	SCIP_NLP *	nlp,
		BMS_BLKMEM *	blkmem,
		SCIP_SET *	set,
		SCIP_STAT *	stat,
		SCIP_VAR *	var,
		SCIP_Real	coef
	)

changes coefficient of variable in diving NLP

Parameters

nlp	current NLP data
blkmem	block memory
set	global SCIP settings
stat	problem statistics data
var	variable which coefficient to change
coef	new linear coefficient of variable in objective

Definition at line 4651 of file nlp.c.

References SCIP_Nlp::divingobj, FALSE, SCIP_Nlp::indiving, NULL, SCIP_Nlp::nvars, SCIP_Nlp::objflushed, SCIP_Nlp::problem, SCIP_CALL, SCIP_EXPRCURV_LINEAR, SCIP_OKAY, SCIP_Real, SCIPhashmapExists(), SCIPhashmapGetImageInt(), SCIPnlpiChgLinearCoefs(), SCIPnlrowChgLinearCoef(), SCIPnlrowCreate(), SCIPsetAllocBufferArray, SCIPsetFreeBufferArray, SCIPsetInfinity(), SCIPvarGetObj(), SCIP_Nlp::solver, SCIP_Nlp::varhash, SCIP_Nlp::varmap_nlp2nlpi, and SCIP_Nlp::vars.

Referenced by SCIPchgVarObjDiveNLP().

SCIPnlpChgVarBoundsDive()

SCIP_RETCODE SCIPnlpChgVarBoundsDive	(	SCIP_SET *	set,
		SCIP_NLP *	nlp,
		SCIP_VAR *	var,
		SCIP_Real	lb,
		SCIP_Real	ub
	)

changes bounds of variable in diving NLP

Parameters

set	global SCIP settings
nlp	current NLP data
var	variable which coefficient to change
lb	new lower bound of variable
ub	new upper bound of variable

Definition at line 4708 of file nlp.c.

References SCIP_Nlp::indiving, NULL, SCIP_Nlp::problem, SCIP_CALL, SCIP_OKAY, SCIPhashmapExists(), SCIPhashmapGetImageInt(), SCIPnlpiChgVarBounds(), SCIP_Nlp::solver, SCIP_Nlp::varhash, and SCIP_Nlp::varmap_nlp2nlpi.

Referenced by SCIPchgVarBoundsDiveNLP().

SCIPnlpChgVarsBoundsDive()

SCIP_RETCODE SCIPnlpChgVarsBoundsDive	(	SCIP_NLP *	nlp,
		SCIP_SET *	set,
		int	nvars,
		SCIP_VAR **	vars,
		SCIP_Real *	lbs,
		SCIP_Real *	ubs
	)

changes bounds of a set of variables in diving NLP

Parameters

nlp	current NLP data
set	global SCIP settings
nvars	number of variables which bounds to change
vars	variables which bounds to change
lbs	new lower bounds of variables
ubs	new upper bounds of variables

Definition at line 4737 of file nlp.c.

References SCIP_Nlp::indiving, NULL, SCIP_Nlp::problem, SCIP_CALL, SCIP_OKAY, SCIPhashmapExists(), SCIPhashmapGetImageInt(), SCIPnlpiChgVarBounds(), SCIPsetAllocBufferArray, SCIPsetFreeBufferArray, SCIP_Nlp::solver, SCIP_Nlp::varhash, and SCIP_Nlp::varmap_nlp2nlpi.

Referenced by SCIPchgVarsBoundsDiveNLP().

SCIPnlpIsDivingObjChanged()

SCIP_Bool SCIPnlpIsDivingObjChanged

(

SCIP_NLP *

nlp

)

returns whether the objective function has been changed during diving

Parameters

nlp	current NLP data

Definition at line 4781 of file nlp.c.

References SCIP_Nlp::divingobj, and NULL.

Referenced by SCIPsolLinkNLPSol().