Detailed Description
internal methods for NLP management
Definition in file nlp.h.
#include <stdio.h>
#include "scip/def.h"
#include "blockmemshell/memory.h"
#include "scip/type_event.h"
#include "scip/type_set.h"
#include "scip/type_stat.h"
#include "scip/type_misc.h"
#include "scip/type_lp.h"
#include "scip/type_var.h"
#include "scip/type_prob.h"
#include "scip/type_sol.h"
#include "scip/type_primal.h"
#include "scip/pub_nlp.h"
Go to the source code of this file.
Function Documentation
◆ 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 3425 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 3451 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 3571 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 3631 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()
currently a dummy function that always returns TRUE
- Parameters
-
nlp NLP data
Definition at line 3673 of file nlp.c.
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 3682 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 3716 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 3742 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 3767 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 3804 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 3834 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 3860 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 3890 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 3922 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 3960 of file nlp.c.
References SCIP_Nlp::indiving, nlpSolve(), NULL, SCIP_CALL, SCIP_OKAY, and SCIPnlpFlush().
Referenced by SCIPsolveNLPParam().
◆ SCIPnlpGetObjval()
gets objective value of current NLP
- Parameters
-
nlp current NLP data
Definition at line 3987 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 3997 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 4031 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 4065 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 4111 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 4147 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().
◆ 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 4444 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 4475 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 4537 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 4594 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 4623 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()
returns whether the objective function has been changed during diving
- Parameters
-
nlp current NLP data
Definition at line 4667 of file nlp.c.
References SCIP_Nlp::divingobj, and NULL.
Referenced by SCIPsolLinkNLPSol().
◆ SCIPnlpGetVars()
gets array with variables of the NLP
- Parameters
-
nlp current NLP data
Definition at line 4202 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 4212 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 4222 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 4276 of file nlp.c.
References SCIP_NlRow::expr, FALSE, SCIP_Nlp::nlrows, SCIP_Nlp::nnlrows, NULL, SCIP_CALL, SCIP_EXPRITER_DFS, SCIP_OKAY, SCIP_VARTYPE_CONTINUOUS, SCIPexprIsVar(), SCIPexpriterCreate(), SCIPexpriterFree(), SCIPexpriterGetNext(), SCIPexpriterInit(), SCIPexpriterIsEnd(), SCIPexpriterRestartDFS(), SCIPgetVarExprVar(), SCIPvarGetType(), and TRUE.
Referenced by SCIPhasNLPContinuousNonlinearity().
◆ SCIPnlpGetVarsLbDualsol()
gives dual solution values associated with lower bounds of NLP variables
- Parameters
-
nlp current NLP data
Definition at line 4319 of file nlp.c.
References NULL, and SCIP_Nlp::varlbdualvals.
Referenced by SCIPgetNLPVarsLbDualsol().
◆ SCIPnlpGetVarsUbDualsol()
gives dual solution values associated with upper bounds of NLP variables
- Parameters
-
nlp current NLP data
Definition at line 4329 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 4339 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 4349 of file nlp.c.
References SCIP_Nlp::nnlrows, and NULL.
Referenced by SCIPgetNLPNlRowsData(), and SCIPgetNNLPNlRows().
◆ SCIPnlpGetNLPI()
gets the NLP solver interface
- Parameters
-
nlp current NLP data
Definition at line 4359 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 4369 of file nlp.c.
References NULL, and SCIP_Nlp::problem.
Referenced by SCIPgetNLPI().
◆ SCIPnlpIsDiving()
indicates whether NLP is currently in diving mode
- Parameters
-
nlp current NLP data
Definition at line 4379 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 4389 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 4399 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 4409 of file nlp.c.
References NULL, SCIP_Nlp::problem, SCIP_CALL, SCIP_OKAY, SCIPnlpiGetStatistics(), and SCIP_Nlp::solver.
Referenced by SCIPgetNLPStatistics().
◆ SCIPnlpHasSolution()
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 4430 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().