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interface methods for specific LP solvers
- Author
- Tobias Achterberg
-
Marc Pfetsch
This file specifies a generic LP solver interface used by SCIP to create, modify, and solve linear programs of the form
min/max obj * x lhs <= A * x <= rhs lb <= x <= ub
and query information about the solution. Although it includes a few SCIP header files, e.g., because it uses SCIP's return codes, it can be used independently of any SCIP instance.
Definition in file lpi.h.
Go to the source code of this file.
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| const char * | SCIPlpiGetSolverName (void) |
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| const char * | SCIPlpiGetSolverDesc (void) |
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| void * | SCIPlpiGetSolverPointer (SCIP_LPI *lpi) |
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| SCIP_RETCODE | SCIPlpiCreate (SCIP_LPI **lpi, SCIP_MESSAGEHDLR *messagehdlr, const char *name, SCIP_OBJSEN objsen) |
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| SCIP_RETCODE | SCIPlpiFree (SCIP_LPI **lpi) |
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| SCIP_RETCODE | SCIPlpiLoadColLP (SCIP_LPI *lpi, SCIP_OBJSEN objsen, int ncols, const SCIP_Real *obj, const SCIP_Real *lb, const SCIP_Real *ub, char **colnames, int nrows, const SCIP_Real *lhs, const SCIP_Real *rhs, char **rownames, int nnonz, const int *beg, const int *ind, const SCIP_Real *val) |
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| SCIP_RETCODE | SCIPlpiAddCols (SCIP_LPI *lpi, int ncols, const SCIP_Real *obj, const SCIP_Real *lb, const SCIP_Real *ub, char **colnames, int nnonz, const int *beg, const int *ind, const SCIP_Real *val) |
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| SCIP_RETCODE | SCIPlpiDelCols (SCIP_LPI *lpi, int firstcol, int lastcol) |
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| SCIP_RETCODE | SCIPlpiDelColset (SCIP_LPI *lpi, int *dstat) |
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| SCIP_RETCODE | SCIPlpiAddRows (SCIP_LPI *lpi, int nrows, const SCIP_Real *lhs, const SCIP_Real *rhs, char **rownames, int nnonz, const int *beg, const int *ind, const SCIP_Real *val) |
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| SCIP_RETCODE | SCIPlpiDelRows (SCIP_LPI *lpi, int firstrow, int lastrow) |
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| SCIP_RETCODE | SCIPlpiDelRowset (SCIP_LPI *lpi, int *dstat) |
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| SCIP_RETCODE | SCIPlpiClear (SCIP_LPI *lpi) |
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| SCIP_RETCODE | SCIPlpiChgBounds (SCIP_LPI *lpi, int ncols, const int *ind, const SCIP_Real *lb, const SCIP_Real *ub) |
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| SCIP_RETCODE | SCIPlpiChgSides (SCIP_LPI *lpi, int nrows, const int *ind, const SCIP_Real *lhs, const SCIP_Real *rhs) |
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| SCIP_RETCODE | SCIPlpiChgCoef (SCIP_LPI *lpi, int row, int col, SCIP_Real newval) |
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| SCIP_RETCODE | SCIPlpiChgObjsen (SCIP_LPI *lpi, SCIP_OBJSEN objsen) |
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| SCIP_RETCODE | SCIPlpiChgObj (SCIP_LPI *lpi, int ncols, int *ind, SCIP_Real *obj) |
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| SCIP_RETCODE | SCIPlpiScaleRow (SCIP_LPI *lpi, int row, SCIP_Real scaleval) |
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| SCIP_RETCODE | SCIPlpiScaleCol (SCIP_LPI *lpi, int col, SCIP_Real scaleval) |
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| SCIP_RETCODE | SCIPlpiGetNRows (SCIP_LPI *lpi, int *nrows) |
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| SCIP_RETCODE | SCIPlpiGetNCols (SCIP_LPI *lpi, int *ncols) |
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| SCIP_RETCODE | SCIPlpiGetObjsen (SCIP_LPI *lpi, SCIP_OBJSEN *objsen) |
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| SCIP_RETCODE | SCIPlpiGetNNonz (SCIP_LPI *lpi, int *nnonz) |
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| SCIP_RETCODE | SCIPlpiGetCols (SCIP_LPI *lpi, int firstcol, int lastcol, SCIP_Real *lb, SCIP_Real *ub, int *nnonz, int *beg, int *ind, SCIP_Real *val) |
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| SCIP_RETCODE | SCIPlpiGetRows (SCIP_LPI *lpi, int firstrow, int lastrow, SCIP_Real *lhs, SCIP_Real *rhs, int *nnonz, int *beg, int *ind, SCIP_Real *val) |
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| SCIP_RETCODE | SCIPlpiGetColNames (SCIP_LPI *lpi, int firstcol, int lastcol, char **colnames, char *namestorage, int namestoragesize, int *storageleft) |
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| SCIP_RETCODE | SCIPlpiGetRowNames (SCIP_LPI *lpi, int firstrow, int lastrow, char **rownames, char *namestorage, int namestoragesize, int *storageleft) |
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| SCIP_RETCODE | SCIPlpiGetObj (SCIP_LPI *lpi, int firstcol, int lastcol, SCIP_Real *vals) |
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| SCIP_RETCODE | SCIPlpiGetBounds (SCIP_LPI *lpi, int firstcol, int lastcol, SCIP_Real *lbs, SCIP_Real *ubs) |
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| SCIP_RETCODE | SCIPlpiGetSides (SCIP_LPI *lpi, int firstrow, int lastrow, SCIP_Real *lhss, SCIP_Real *rhss) |
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| SCIP_RETCODE | SCIPlpiGetCoef (SCIP_LPI *lpi, int row, int col, SCIP_Real *val) |
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| SCIP_RETCODE | SCIPlpiSolvePrimal (SCIP_LPI *lpi) |
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| SCIP_RETCODE | SCIPlpiSolveDual (SCIP_LPI *lpi) |
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| SCIP_RETCODE | SCIPlpiSolveBarrier (SCIP_LPI *lpi, SCIP_Bool crossover) |
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| SCIP_RETCODE | SCIPlpiStartStrongbranch (SCIP_LPI *lpi) |
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| SCIP_RETCODE | SCIPlpiEndStrongbranch (SCIP_LPI *lpi) |
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| SCIP_RETCODE | SCIPlpiStrongbranchFrac (SCIP_LPI *lpi, int col, SCIP_Real psol, int itlim, SCIP_Real *down, SCIP_Real *up, SCIP_Bool *downvalid, SCIP_Bool *upvalid, int *iter) |
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| SCIP_RETCODE | SCIPlpiStrongbranchesFrac (SCIP_LPI *lpi, int *cols, int ncols, SCIP_Real *psols, int itlim, SCIP_Real *down, SCIP_Real *up, SCIP_Bool *downvalid, SCIP_Bool *upvalid, int *iter) |
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| SCIP_RETCODE | SCIPlpiStrongbranchInt (SCIP_LPI *lpi, int col, SCIP_Real psol, int itlim, SCIP_Real *down, SCIP_Real *up, SCIP_Bool *downvalid, SCIP_Bool *upvalid, int *iter) |
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| SCIP_RETCODE | SCIPlpiStrongbranchesInt (SCIP_LPI *lpi, int *cols, int ncols, SCIP_Real *psols, int itlim, SCIP_Real *down, SCIP_Real *up, SCIP_Bool *downvalid, SCIP_Bool *upvalid, int *iter) |
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| SCIP_Bool | SCIPlpiWasSolved (SCIP_LPI *lpi) |
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| SCIP_RETCODE | SCIPlpiGetSolFeasibility (SCIP_LPI *lpi, SCIP_Bool *primalfeasible, SCIP_Bool *dualfeasible) |
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| SCIP_Bool | SCIPlpiExistsPrimalRay (SCIP_LPI *lpi) |
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| SCIP_Bool | SCIPlpiHasPrimalRay (SCIP_LPI *lpi) |
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| SCIP_Bool | SCIPlpiIsPrimalUnbounded (SCIP_LPI *lpi) |
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| SCIP_Bool | SCIPlpiIsPrimalInfeasible (SCIP_LPI *lpi) |
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| SCIP_Bool | SCIPlpiIsPrimalFeasible (SCIP_LPI *lpi) |
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| SCIP_Bool | SCIPlpiExistsDualRay (SCIP_LPI *lpi) |
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| SCIP_Bool | SCIPlpiHasDualRay (SCIP_LPI *lpi) |
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| SCIP_Bool | SCIPlpiIsDualUnbounded (SCIP_LPI *lpi) |
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| SCIP_Bool | SCIPlpiIsDualInfeasible (SCIP_LPI *lpi) |
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| SCIP_Bool | SCIPlpiIsDualFeasible (SCIP_LPI *lpi) |
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| SCIP_Bool | SCIPlpiIsOptimal (SCIP_LPI *lpi) |
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| SCIP_Bool | SCIPlpiIsStable (SCIP_LPI *lpi) |
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| SCIP_Bool | SCIPlpiIsObjlimExc (SCIP_LPI *lpi) |
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| SCIP_Bool | SCIPlpiIsIterlimExc (SCIP_LPI *lpi) |
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| SCIP_Bool | SCIPlpiIsTimelimExc (SCIP_LPI *lpi) |
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| int | SCIPlpiGetInternalStatus (SCIP_LPI *lpi) |
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| SCIP_RETCODE | SCIPlpiIgnoreInstability (SCIP_LPI *lpi, SCIP_Bool *success) |
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| SCIP_RETCODE | SCIPlpiGetObjval (SCIP_LPI *lpi, SCIP_Real *objval) |
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| SCIP_RETCODE | SCIPlpiGetSol (SCIP_LPI *lpi, SCIP_Real *objval, SCIP_Real *primsol, SCIP_Real *dualsol, SCIP_Real *activity, SCIP_Real *redcost) |
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| SCIP_RETCODE | SCIPlpiGetPrimalRay (SCIP_LPI *lpi, SCIP_Real *ray) |
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| SCIP_RETCODE | SCIPlpiGetDualfarkas (SCIP_LPI *lpi, SCIP_Real *dualfarkas) |
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| SCIP_RETCODE | SCIPlpiGetIterations (SCIP_LPI *lpi, int *iterations) |
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| SCIP_RETCODE | SCIPlpiGetRealSolQuality (SCIP_LPI *lpi, SCIP_LPSOLQUALITY qualityindicator, SCIP_Real *quality) |
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| SCIP_RETCODE | SCIPlpiGetBase (SCIP_LPI *lpi, int *cstat, int *rstat) |
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| SCIP_RETCODE | SCIPlpiSetBase (SCIP_LPI *lpi, int *cstat, int *rstat) |
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| SCIP_RETCODE | SCIPlpiGetBasisInd (SCIP_LPI *lpi, int *bind) |
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| SCIP_RETCODE | SCIPlpiGetBInvRow (SCIP_LPI *lpi, int r, SCIP_Real *coef) |
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| SCIP_RETCODE | SCIPlpiGetBInvCol (SCIP_LPI *lpi, int c, SCIP_Real *coef) |
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| SCIP_RETCODE | SCIPlpiGetBInvARow (SCIP_LPI *lpi, int r, const SCIP_Real *binvrow, SCIP_Real *coef) |
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| SCIP_RETCODE | SCIPlpiGetBInvACol (SCIP_LPI *lpi, int c, SCIP_Real *coef) |
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| SCIP_RETCODE | SCIPlpiGetState (SCIP_LPI *lpi, BMS_BLKMEM *blkmem, SCIP_LPISTATE **lpistate) |
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| SCIP_RETCODE | SCIPlpiSetState (SCIP_LPI *lpi, BMS_BLKMEM *blkmem, SCIP_LPISTATE *lpistate) |
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| SCIP_RETCODE | SCIPlpiClearState (SCIP_LPI *lpi) |
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| SCIP_RETCODE | SCIPlpiFreeState (SCIP_LPI *lpi, BMS_BLKMEM *blkmem, SCIP_LPISTATE **lpistate) |
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| SCIP_Bool | SCIPlpiHasStateBasis (SCIP_LPI *lpi, SCIP_LPISTATE *lpistate) |
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| SCIP_RETCODE | SCIPlpiReadState (SCIP_LPI *lpi, const char *fname) |
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| SCIP_RETCODE | SCIPlpiWriteState (SCIP_LPI *lpi, const char *fname) |
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| SCIP_RETCODE | SCIPlpiGetNorms (SCIP_LPI *lpi, BMS_BLKMEM *blkmem, SCIP_LPINORMS **lpinorms) |
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| SCIP_RETCODE | SCIPlpiSetNorms (SCIP_LPI *lpi, BMS_BLKMEM *blkmem, SCIP_LPINORMS *lpinorms) |
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| SCIP_RETCODE | SCIPlpiFreeNorms (SCIP_LPI *lpi, BMS_BLKMEM *blkmem, SCIP_LPINORMS **lpinorms) |
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| SCIP_RETCODE | SCIPlpiGetIntpar (SCIP_LPI *lpi, SCIP_LPPARAM type, int *ival) |
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| SCIP_RETCODE | SCIPlpiSetIntpar (SCIP_LPI *lpi, SCIP_LPPARAM type, int ival) |
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| SCIP_RETCODE | SCIPlpiGetRealpar (SCIP_LPI *lpi, SCIP_LPPARAM type, SCIP_Real *dval) |
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| SCIP_RETCODE | SCIPlpiSetRealpar (SCIP_LPI *lpi, SCIP_LPPARAM type, SCIP_Real dval) |
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| SCIP_Real | SCIPlpiInfinity (SCIP_LPI *lpi) |
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| SCIP_Bool | SCIPlpiIsInfinity (SCIP_LPI *lpi, SCIP_Real val) |
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| SCIP_RETCODE | SCIPlpiReadLP (SCIP_LPI *lpi, const char *fname) |
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| SCIP_RETCODE | SCIPlpiWriteLP (SCIP_LPI *lpi, const char *fname) |
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| const char* SCIPlpiGetSolverName |
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void |
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gets name and version of LP solver
Definition at line 433 of file lpi_clp.cpp.
References CLP_VERSION, CPX_SUBVERSION, cpxname, grbname, LPINAME, MIN, mskname, SCIP_Real, SCIPdebugMessage, SOPLEX_SUBVERSION, spxname, and xprsname.
Referenced by lpFlushChgCols(), lpFlushChgRows(), SCIPcreate(), SCIPlpCreate(), SCIPlpMarkFlushed(), and SCIPprintVersion().
| const char* SCIPlpiGetSolverDesc |
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| void* SCIPlpiGetSolverPointer |
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SCIP_LPI * |
lpi | ) |
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gets pointer for LP solver - use only with great care
The behavior of this function depends on the solver and its use is therefore only recommended if you really know what you are doing. In general, it returns a pointer to the LP solver object.
gets pointer for LP solver - use only with great care
gets pointer for LP solver - use only with great care
Here we return the pointer to the LP environment.
gets pointer for LP solver - use only with great care
Here we return the pointer to the model.
- Parameters
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| lpi | pointer to an LP interface structure |
Definition at line 450 of file lpi_clp.cpp.
References SCIP_LPi::clp, SCIP_LPi::cpxlp, SCIP_LPi::grbmodel, NULL, SCIP_LPi::prob, SCIP_LPi::spx, SCIP_LPi::task, and SCIP_LPi::xprslp.
creates an LP problem object
creates an LP problem object
- Returns
- SCIP_OK on success
- Parameters
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| lpi | pointer to an LP interface structure |
| messagehdlr | message handler to use for printing messages, or NULL |
| name | problem name |
| objsen | objective sense |
Definition at line 469 of file lpi_clp.cpp.
References BMSallocMemory, BMSallocMemoryArray, BMSallocMemoryCPP, CHECK_ZERO, CHECK_ZEROE, CHECK_ZEROPLPIE, copyParameterValues(), DEGEN_LEVEL, FALSE, getParameterValues(), grbenv, invalidateSolution(), MOSEK_CALL, MosekEnv, nextlpid, NULL, numlp, printstr(), SCIP_ALLOC, SCIP_Bool, SCIP_CALL, SCIP_LPERROR, SCIP_LPPAR_PRICING, SCIP_OKAY, SCIP_PRICING_LPIDEFAULT, SCIP_Real, SCIPdebugMessage, SCIPerrorMessage, SCIPlpiChgObjsen(), SCIPlpiInfinity(), SCIPlpiSetIntpar(), SCIPmessagePrintWarning(), SENSE2MOSEK, SETBACK_LIMIT, SOPLEX_TRY, SOPLEX_VERBLEVEL, and TRUE.
Referenced by addConcaveEstimatorMultivariate(), initAlternativeLP(), SCIPlpComputeRelIntPoint(), and SCIPlpCreate().
deletes an LP problem object
- Parameters
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| lpi | pointer to an LP interface structure |
Definition at line 538 of file lpi_clp.cpp.
References BMSfreeMemory, BMSfreeMemoryArray, BMSfreeMemoryArrayNull, CHECK_ZERO, CHECK_ZEROPLPIE, grbenv, MOSEK_CALL, MosekEnv, NULL, numlp, SCIP_OKAY, and SCIPdebugMessage.
Referenced by addConcaveEstimatorMultivariate(), SCIP_DECL_CONSEXITSOL(), SCIPlpComputeRelIntPoint(), and SCIPlpFree().
| SCIP_RETCODE SCIPlpiLoadColLP |
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SCIP_LPI * |
lpi, |
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SCIP_OBJSEN |
objsen, |
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int |
ncols, |
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const SCIP_Real * |
obj, |
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const SCIP_Real * |
lb, |
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const SCIP_Real * |
ub, |
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char ** |
colnames, |
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int |
nrows, |
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const SCIP_Real * |
lhs, |
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const SCIP_Real * |
rhs, |
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char ** |
rownames, |
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int |
nnonz, |
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const int * |
beg, |
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const int * |
ind, |
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const SCIP_Real * |
val |
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copies LP data with column matrix into LP solver
- Parameters
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| lpi | LP interface structure |
| objsen | objective sense |
| ncols | number of columns |
| obj | objective function values of columns |
| lb | lower bounds of columns |
| ub | upper bounds of columns |
| colnames | column names, or NULL |
| nrows | number of rows |
| lhs | left hand sides of rows |
| rhs | right hand sides of rows |
| rownames | row names, or NULL |
| nnonz | number of nonzero elements in the constraint matrix |
| beg | start index of each column in ind- and val-array |
| ind | row indices of constraint matrix entries |
| val | values of constraint matrix entries |
Definition at line 572 of file lpi_clp.cpp.
References BMSallocMemoryArray, BMScopyMemoryArray, BMSfreeMemoryArray, CHECK_ZERO, CHECK_ZEROLPIW, SCIP_LPi::clp, convertSides(), SCIP_LPi::cpxenv, SCIP_LPi::cpxlp, cpxObjsen(), ensureColMem(), ensureRowMem(), ensureSidechgMem(), generateMskBounds(), getEndptrs(), SCIP_LPi::grbenv, SCIP_LPi::grbmodel, SCIP_LPi::iccnt, invalidateSolution(), SCIP_LPi::irbeg, SCIP_LPi::ircnt, SCIP_LPi::irhs, SCIP_LPi::irng, SCIP_LPi::isen, SCIP_LPi::lpid, SCIP_LPi::messagehdlr, MOSEK_CALL, MosekEnv, SCIP_LPi::name, SCIP_LPi::ncols, SCIP_LPi::nrows, NULL, SCIP_LPi::objsense, SCIP_LPi::prob, QS_CONDRET, QS_RETURN, SCIP_LPi::rhsarray, SCIP_LPi::rngarray, SCIP_ALLOC, SCIP_CALL, SCIP_LPERROR, SCIP_OBJSEN_MAXIMIZE, SCIP_OBJSEN_MINIMIZE, SCIP_OKAY, SCIP_Real, SCIPdebugMessage, SCIPlpiAddCols(), SCIPlpiClear(), SCIPmessagePrintWarning(), SCIP_LPi::senarray, SENSE2MOSEK, SCIP_LPi::solstat, SCIP_LPi::spx, spxObjsen(), SCIP_LPi::task, and SCIP_LPi::xprslp.
adds columns to the LP
- Note
- ind array is not checked for duplicates, problems may appear if indeces are added more than once
adds columns to the LP
- Parameters
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| lpi | LP interface structure |
| ncols | number of columns to be added |
| obj | objective function values of new columns |
| lb | lower bounds of new columns |
| ub | upper bounds of new columns |
| colnames | column names, or NULL |
| nnonz | number of nonzero elements to be added to the constraint matrix |
| beg | start index of each column in ind- and val-array, or NULL if nnonz == 0 |
| ind | row indices of constraint matrix entries, or NULL if nnonz == 0 |
| val | values of constraint matrix entries, or NULL if nnonz == 0 |
Definition at line 638 of file lpi_clp.cpp.
References BMSallocMemoryArray, BMScopyMemoryArray, BMSfreeMemoryArray, CHECK_ZERO, CHECK_ZEROLPIW, SCIP_LPi::clp, SCIP_LPi::cpxenv, SCIP_LPi::cpxlp, ensureColMem(), generateMskBounds(), getEndptrs(), SCIP_LPi::grbmodel, SCIP_LPi::iccnt, invalidateSolution(), SCIP_LPi::lpid, SCIP_LPi::messagehdlr, MOSEK_CALL, MosekEnv, SCIP_LPi::ncols, NULL, SCIP_LPi::prob, QS_RETURN, SCIP_ALLOC, SCIP_CALL, SCIP_LPERROR, SCIP_OKAY, SCIP_Real, SCIPdebugMessage, SCIPmessagePrintWarning(), SCIP_LPi::solstat, SCIP_LPi::spx, SCIP_LPi::task, and SCIP_LPi::xprslp.
Referenced by addAltLPConstraint(), addAltLPRow(), addConcaveEstimatorMultivariate(), lpFlushAddCols(), SCIPlpComputeRelIntPoint(), and SCIPlpiLoadColLP().
deletes all columns in the given range from LP
- Parameters
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| lpi | LP interface structure |
| firstcol | first column to be deleted |
| lastcol | last column to be deleted |
Definition at line 705 of file lpi_clp.cpp.
References BMSallocMemoryArray, BMSfreeMemoryArray, CHECK_ZERO, SCIP_LPi::clp, SCIP_LPi::cpxenv, SCIP_LPi::cpxlp, ensureColMem(), getIndicesRange(), SCIP_LPi::grbmodel, SCIP_LPi::iccnt, invalidateSolution(), SCIP_LPi::lpid, SCIP_LPi::messagehdlr, MOSEK_CALL, MosekEnv, SCIP_LPi::ncols, NULL, SCIP_LPi::prob, QS_RETURN, SCIP_ALLOC, SCIP_CALL, SCIP_OKAY, SCIPdebugMessage, SCIP_LPi::solstat, SOPLEX_TRY, SCIP_LPi::spx, SCIP_LPi::task, and SCIP_LPi::xprslp.
Referenced by lpFlushDelCols(), and SCIPlpiClear().
deletes columns from SCIP_LPI; the new position of a column must not be greater that its old position
deletes columns from SCIP_LP; the new position of a column must not be greater that its old position
- Parameters
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| lpi | LP interface structure |
| dstat | deletion status of columns input: 1 if column should be deleted, 0 if not output: new position of column, -1 if column was deleted |
Definition at line 736 of file lpi_clp.cpp.
References BMSallocMemoryArray, BMSfreeMemoryArray, CHECK_ZERO, SCIP_LPi::clp, SCIP_LPi::cpxenv, SCIP_LPi::cpxlp, getIndicesFromDense(), SCIP_LPi::grbmodel, invalidateSolution(), SCIP_LPi::lpid, SCIP_LPi::messagehdlr, MOSEK_CALL, MosekEnv, SCIP_LPi::ncols, NULL, SCIP_LPi::prob, QS_CONDRET, SCIP_ALLOC, SCIP_CALL, SCIP_OKAY, SCIPdebugMessage, SCIP_LPi::solstat, SOPLEX_TRY, SCIP_LPi::spx, SCIP_LPi::task, and SCIP_LPi::xprslp.
Referenced by lpDelColset().
adds rows to the LP
- Note
- ind array is not checked for duplicates, problems may appear if indeces are added more than once
adds rows to the LP
- Parameters
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| lpi | LP interface structure |
| nrows | number of rows to be added |
| lhs | left hand sides of new rows |
| rhs | right hand sides of new rows |
| rownames | row names, or NULL |
| nnonz | number of nonzero elements to be added to the constraint matrix |
| beg | start index of each row in ind- and val-array, or NULL if nnonz == 0 |
| ind | column indices of constraint matrix entries, or NULL if nnonz == 0 |
| val | values of constraint matrix entries, or NULL if nnonz == 0 |
Definition at line 782 of file lpi_clp.cpp.
References BMSallocMemoryArray, BMScopyMemoryArray, BMSfreeMemoryArray, CHECK_ZERO, CHECK_ZEROLPIW, SCIP_LPi::clp, convertSides(), SCIP_LPi::cpxenv, SCIP_LPi::cpxlp, ensureRowMem(), ensureSidechgMem(), FALSE, generateMskBounds(), getEndptrs(), SCIP_LPi::grbmodel, invalidateSolution(), SCIP_LPi::irbeg, SCIP_LPi::ircnt, SCIP_LPi::irhs, SCIP_LPi::irng, SCIP_LPi::isen, SCIP_LPi::lpid, SCIP_LPi::messagehdlr, MOSEK_CALL, MosekEnv, SCIP_LPi::nrows, NULL, SCIP_LPi::prob, QS_ERROR, SCIP_LPi::rhsarray, SCIP_LPi::rngarray, SCIP_LPi::rngfound, SCIP_LPi::rngindarray, SCIP_ALLOC, SCIP_CALL, SCIP_LPERROR, SCIP_LPPAR_SCALING, SCIP_OKAY, SCIP_Real, SCIPdebugMessage, SCIPlpiSetIntpar(), SCIPmessagePrintWarning(), SCIP_LPi::senarray, SCIP_LPi::solstat, SCIP_LPi::spx, SCIP_LPi::task, TRUE, and SCIP_LPi::xprslp.
Referenced by addAltLPConstraint(), addAltLPRow(), addConcaveEstimatorMultivariate(), initAlternativeLP(), lpFlushAddRows(), and SCIPlpComputeRelIntPoint().
deletes all rows in the given range from LP
- Parameters
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| lpi | LP interface structure |
| firstrow | first row to be deleted |
| lastrow | last row to be deleted |
Definition at line 844 of file lpi_clp.cpp.
References BMSallocMemoryArray, BMSfreeMemoryArray, CHECK_ZERO, SCIP_LPi::clp, SCIP_LPi::cpxenv, SCIP_LPi::cpxlp, ensureRowMem(), getIndicesRange(), SCIP_LPi::grbmodel, invalidateSolution(), SCIP_LPi::ircnt, SCIP_LPi::lpid, SCIP_LPi::messagehdlr, MOSEK_CALL, MosekEnv, SCIP_LPi::nrows, NULL, SCIP_LPi::prob, QS_RETURN, SCIP_ALLOC, SCIP_CALL, SCIP_OKAY, SCIPdebugMessage, SCIP_LPi::solstat, SOPLEX_TRY, SCIP_LPi::spx, SCIP_LPi::task, and SCIP_LPi::xprslp.
Referenced by lpFlushDelRows(), and SCIPlpiClear().
deletes rows from SCIP_LPI; the new position of a row must not be greater that its old position
deletes rows from SCIP_LP; the new position of a row must not be greater that its old position
- Parameters
-
| lpi | LP interface structure |
| dstat | deletion status of rows input: 1 if row should be deleted, 0 if not output: new position of row, -1 if row was deleted |
Definition at line 876 of file lpi_clp.cpp.
References BMSallocMemoryArray, BMSfreeMemoryArray, CHECK_ZERO, SCIP_LPi::clp, SCIP_LPi::cpxenv, SCIP_LPi::cpxlp, getIndicesFromDense(), SCIP_LPi::grbmodel, invalidateSolution(), SCIP_LPi::lpid, SCIP_LPi::messagehdlr, MOSEK_CALL, MosekEnv, SCIP_LPi::nrows, NULL, SCIP_LPi::prob, QS_CONDRET, SCIP_ALLOC, SCIP_CALL, SCIP_OKAY, SCIPdebugMessage, SCIP_LPi::solstat, SOPLEX_TRY, SCIP_LPi::spx, SCIP_LPi::task, and SCIP_LPi::xprslp.
Referenced by lpDelRowset().
clears the whole LP
- Parameters
-
| lpi | LP interface structure |
Definition at line 922 of file lpi_clp.cpp.
References CHECK_ZERO, SCIP_LPi::clp, SCIP_LPi::cpxenv, SCIP_LPi::cpxlp, ensureColMem(), ensureRowMem(), SCIP_LPi::grbenv, SCIP_LPi::grbmodel, SCIP_LPi::iccnt, invalidateSolution(), SCIP_LPi::ircnt, SCIP_LPi::lpid, SCIP_LPi::messagehdlr, MOSEK_CALL, MosekEnv, SCIP_LPi::ncols, SCIP_LPi::nrows, NULL, SCIP_LPi::prob, QS_CONDRET, SCIP_CALL, SCIP_OKAY, SCIPdebugMessage, SCIPlpiDelCols(), SCIPlpiDelRows(), SCIP_LPi::solstat, SOPLEX_TRY, SCIP_LPi::spx, SCIP_LPi::task, and SCIP_LPi::xprslp.
Referenced by SCIPlpiLoadColLP().
changes lower and upper bounds of columns
- Parameters
-
| lpi | LP interface structure |
| ncols | number of columns to change bounds for |
| ind | column indices |
| lb | values for the new lower bounds |
| ub | values for the new upper bounds |
Definition at line 941 of file lpi_clp.cpp.
References BMSallocMemoryArray, BMSfreeMemoryArray, CHECK_ZERO, SCIP_LPi::clp, CPX_MAGICZEROCONSTANT, SCIP_LPi::cpxenv, SCIP_LPi::cpxlp, ensureBoundchgMem(), ensureColMem(), EPSZ, generateMskBounds(), SCIP_LPi::grbmodel, SCIP_LPi::iccha, invalidateSolution(), SCIP_LPi::larray, SCIP_LPi::lpid, SCIP_LPi::messagehdlr, MOSEK_CALL, MosekEnv, NULL, SCIP_LPi::prob, QS_CONDRET, QS_RETURN, SCIP_ALLOC, SCIP_CALL, SCIP_LPERROR, SCIP_OKAY, SCIP_Real, SCIPdebugMessage, SCIPdebugPrintf, SCIPmessagePrintWarning(), SCIP_LPi::solstat, SCIP_LPi::spx, SCIP_LPi::task, SCIP_LPi::uarray, and SCIP_LPi::xprslp.
Referenced by conflictAnalyzeLP(), fixAltLPVariable(), fixAltLPVariables(), lpFlushChgCols(), lpLexDualSimplex(), SCIPconflictAnalyzeStrongbranch(), SCIPlpiScaleCol(), unfixAltLPVariable(), and unfixAltLPVariables().
changes left and right hand sides of rows
- Parameters
-
| lpi | LP interface structure |
| nrows | number of rows to change sides for |
| ind | row indices |
| lhs | new values for left hand sides |
| rhs | new values for right hand sides |
Definition at line 1007 of file lpi_clp.cpp.
References BMSallocMemoryArray, BMSfreeMemoryArray, CHECK_ZERO, SCIP_LPi::clp, convertSides(), SCIP_LPi::cpxenv, SCIP_LPi::cpxlp, ensureRowMem(), ensureSidechgMem(), generateMskBounds(), SCIP_LPi::grbmodel, invalidateSolution(), SCIP_LPi::irhs, SCIP_LPi::irng, SCIP_LPi::isen, SCIP_LPi::lpid, SCIP_LPi::messagehdlr, MOSEK_CALL, MosekEnv, NULL, SCIP_LPi::prob, QS_CONDRET, SCIP_LPi::rhsarray, SCIP_LPi::rngarray, SCIP_LPi::rngindarray, SCIP_ALLOC, SCIP_CALL, SCIP_LPERROR, SCIP_OKAY, SCIPdebugMessage, SCIPmessagePrintWarning(), SCIP_LPi::senarray, SCIP_LPi::solstat, SCIP_LPi::spx, SCIP_LPi::task, and SCIP_LPi::xprslp.
Referenced by conflictAnalyzeLP(), lpFlushChgRows(), lpLexDualSimplex(), scaleFirstRow(), and SCIPlpiScaleRow().
changes a single coefficient
- Parameters
-
| lpi | LP interface structure |
| row | row number of coefficient to change |
| col | column number of coefficient to change |
| newval | new value of coefficient |
Definition at line 1035 of file lpi_clp.cpp.
References CHECK_ZERO, SCIP_LPi::clp, SCIP_LPi::cpxenv, SCIP_LPi::cpxlp, SCIP_LPi::grbmodel, invalidateSolution(), SCIP_LPi::lpid, SCIP_LPi::messagehdlr, MOSEK_CALL, MosekEnv, NULL, SCIP_LPi::prob, QS_RETURN, SCIP_CALL, SCIP_OKAY, SCIPdebugMessage, SCIP_LPi::solstat, SOPLEX_TRY, SCIP_LPi::spx, SCIP_LPi::task, and SCIP_LPi::xprslp.
Referenced by SCIPlpiScaleCol(), SCIPlpiScaleRow(), updateFirstRow(), and updateFirstRowGlobal().
changes the objective sense
- Parameters
-
| lpi | LP interface structure |
| objsen | new objective sense |
Definition at line 1058 of file lpi_clp.cpp.
References CHECK_ZERO, SCIP_LPi::clp, SCIP_LPi::cpxenv, SCIP_LPi::cpxlp, cpxObjsen(), SCIP_LPi::grbmodel, invalidateSolution(), SCIP_LPi::lpid, SCIP_LPi::messagehdlr, MOSEK_CALL, MosekEnv, NULL, SCIP_LPi::objsense, SCIP_LPi::prob, QS_CONDRET, SCIP_OBJSEN_MAXIMIZE, SCIP_OBJSEN_MINIMIZE, SCIP_OKAY, SCIPdebugMessage, SENSE2MOSEK, SCIP_LPi::solstat, SOPLEX_TRY, SCIP_LPi::spx, spxObjsen(), SCIP_LPi::task, SCIP_LPi::xprslp, and xprsObjsen().
Referenced by SCIPlpiCreate().
changes objective values of columns in the LP
- Parameters
-
| lpi | LP interface structure |
| ncols | number of columns to change objective value for |
| ind | column indices to change objective value for |
| obj | new objective values for columns |
Definition at line 1078 of file lpi_clp.cpp.
References CHECK_ZERO, SCIP_LPi::clp, SCIP_LPi::cpxenv, SCIP_LPi::cpxlp, SCIP_LPi::grbmodel, invalidateSolution(), SCIP_LPi::lpid, SCIP_LPi::messagehdlr, MOSEK_CALL, MosekEnv, NULL, SCIP_LPi::prob, QS_CONDRET, SCIP_CALL, SCIP_LPERROR, SCIP_OKAY, SCIPdebugMessage, SCIPmessagePrintWarning(), SCIP_LPi::solstat, SCIP_LPi::spx, SCIP_LPi::task, and SCIP_LPi::xprslp.
Referenced by lpFlushChgCols(), lpLexDualSimplex(), SCIPlpiScaleCol(), setAltLPObj(), and setAltLPObjZero().
multiplies a row with a non-zero scalar; for negative scalars, the row's sense is switched accordingly
- Parameters
-
| lpi | LP interface structure |
| row | row number to scale |
| scaleval | scaling multiplier |
Definition at line 1105 of file lpi_clp.cpp.
References BMSallocMemoryArray, BMSfreeMemoryArray, CHECK_ZERO, SCIP_LPi::clp, SCIP_LPi::cpxenv, SCIP_LPi::cpxlp, ensureValMem(), SCIP_LPi::grbmodel, SCIP_LPi::indarray, invalidateSolution(), SCIP_LPi::lpid, SCIP_LPi::messagehdlr, MOSEK_CALL, MosekEnv, NULL, SCIP_LPi::prob, QS_RETURN, QS_TESTG, scale_bound(), scale_vec(), SCIP_ALLOC, SCIP_CALL, SCIP_LPERROR, SCIP_OKAY, SCIP_Real, SCIPdebugMessage, SCIPerrorMessage, SCIPlpiChgCoef(), SCIPlpiChgSides(), SCIPlpiGetRows(), SCIPmessagePrintWarning(), SCIP_LPi::solstat, SCIP_LPi::spx, SCIP_LPi::task, SCIP_LPi::valarray, and SCIP_LPi::xprslp.
multiplies a column with a non-zero scalar; the objective value is multiplied with the scalar, and the bounds are divided by the scalar; for negative scalars, the column's bounds are switched
- Parameters
-
| lpi | LP interface structure |
| col | column number to scale |
| scaleval | scaling multiplier |
Definition at line 1178 of file lpi_clp.cpp.
References BMSallocMemoryArray, BMSfreeMemoryArray, CHECK_ZERO, SCIP_LPi::clp, SCIP_LPi::cpxenv, SCIP_LPi::cpxlp, ensureValMem(), SCIP_LPi::grbmodel, SCIP_LPi::indarray, invalidateSolution(), SCIP_LPi::lpid, SCIP_LPi::messagehdlr, MOSEK_CALL, MosekEnv, NULL, SCIP_LPi::prob, QS_RETURN, QS_TESTG, scale_bound(), scale_vec(), SCIP_ALLOC, SCIP_CALL, SCIP_LPERROR, SCIP_OKAY, SCIP_Real, SCIPdebugMessage, SCIPlpiChgBounds(), SCIPlpiChgCoef(), SCIPlpiChgObj(), SCIPlpiGetCols(), SCIPlpiGetObj(), SCIPmessagePrintWarning(), SCIP_LPi::solstat, SCIP_LPi::spx, SCIP_LPi::task, SCIP_LPi::valarray, and SCIP_LPi::xprslp.
gets the number of rows in the LP
- Parameters
-
| lpi | LP interface structure |
| nrows | pointer to store the number of rows |
Definition at line 1255 of file lpi_clp.cpp.
References CHECK_ZERO, SCIP_LPi::clp, SCIP_LPi::cpxenv, SCIP_LPi::cpxlp, SCIP_LPi::grbmodel, SCIP_LPi::lpid, SCIP_LPi::messagehdlr, MOSEK_CALL, MosekEnv, SCIP_LPi::nrows, NULL, SCIP_LPi::prob, SCIP_OKAY, SCIPdebugMessage, SCIP_LPi::spx, SCIP_LPi::task, and SCIP_LPi::xprslp.
Referenced by addAltLPConstraint(), addAltLPRow(), and SCIPlpFlush().
gets the number of columns in the LP
- Parameters
-
| lpi | LP interface structure |
| ncols | pointer to store the number of cols |
Definition at line 1273 of file lpi_clp.cpp.
References CHECK_ZERO, SCIP_LPi::clp, SCIP_LPi::cpxenv, SCIP_LPi::cpxlp, SCIP_LPi::grbmodel, SCIP_LPi::lpid, SCIP_LPi::messagehdlr, MOSEK_CALL, MosekEnv, SCIP_LPi::ncols, NULL, SCIP_LPi::prob, SCIP_OKAY, SCIPdebugMessage, SCIP_LPi::spx, SCIP_LPi::task, and SCIP_LPi::xprslp.
Referenced by addAltLPConstraint(), addAltLPRow(), checkIISlocal(), checkLPBoundsClean(), extendToCover(), scaleFirstRow(), SCIPlpComputeRelIntPoint(), and SCIPlpFlush().
gets the objective sense of the LP
gets objective sense of the LP
- Parameters
-
| lpi | LP interface structure |
| objsen | pointer to store objective sense |
Definition at line 1493 of file lpi_clp.cpp.
References CHECK_ZERO, SCIP_LPi::clp, SCIP_LPi::cpxenv, SCIP_LPi::cpxlp, errorMessage(), SCIP_LPi::grbmodel, SCIP_LPi::messagehdlr, NULL, SCIP_LPERROR, SCIP_OBJSEN_MAXIMIZE, SCIP_OBJSEN_MINIMIZE, SCIP_OKAY, SCIP_PLUGINNOTFOUND, SCIPdebugMessage, SCIPerrorMessage, and SCIP_LPi::spx.
gets the number of nonzero elements in the LP constraint matrix
- Parameters
-
| lpi | LP interface structure |
| nnonz | pointer to store the number of nonzeros |
Definition at line 1291 of file lpi_clp.cpp.
References CHECK_ZERO, SCIP_LPi::clp, SCIP_LPi::cpxenv, SCIP_LPi::cpxlp, errorMessage(), SCIP_LPi::grbmodel, SCIP_LPi::lpid, SCIP_LPi::messagehdlr, MOSEK_CALL, MosekEnv, NULL, SCIP_LPi::prob, SCIP_OKAY, SCIP_PLUGINNOTFOUND, SCIPdebugMessage, SCIP_LPi::spx, SCIP_LPi::task, and SCIP_LPi::xprslp.
Referenced by SCIPlpiGetCols(), and SCIPlpiGetRows().
gets columns from LP problem object; the arrays have to be large enough to store all values; Either both, lb and ub, have to be NULL, or both have to be non-NULL, either nnonz, beg, ind, and val have to be NULL, or all of them have to be non-NULL.
gets columns from LP problem object; the arrays have to be large enough to store all values Either both, lb and ub, have to be 0, or both have to be non-0, either nnonz, beg, ind, and val have to be 0, or all of them have to be non-0.
gets columns from LP problem object; the arrays have to be large enough to store all values Either both, lb and ub, have to be NULL, or both have to be non-NULL, either nnonz, beg, ind, and val have to be NULL, or all of them have to be non-NULL.
- Parameters
-
| lpi | LP interface structure |
| firstcol | first column to get from LP |
| lastcol | last column to get from LP |
| lb | buffer to store the lower bound vector, or NULL |
| ub | buffer to store the upper bound vector, or NULL |
| nnonz | pointer to store the number of nonzero elements returned, or NULL |
| beg | buffer to store start index of each column in ind- and val-array, or NULL |
| ind | buffer to store column indices of constraint matrix entries, or NULL |
| val | buffer to store values of constraint matrix entries, or NULL |
Definition at line 1312 of file lpi_clp.cpp.
References BMSallocMemoryArray, BMScopyMemoryArray, BMSfreeMemoryArray, CHECK_ZERO, SCIP_LPi::clp, SCIP_LPi::cpxenv, SCIP_LPi::cpxlp, ensureColMem(), errorMessage(), getASlice(), SCIP_LPi::grbmodel, SCIP_LPi::iccnt, SCIP_LPi::lpid, SCIP_LPi::messagehdlr, MosekEnv, NULL, SCIP_LPi::prob, QS_RETURN, QS_TESTG, SCIP_ALLOC, SCIP_CALL, SCIP_OKAY, SCIP_PLUGINNOTFOUND, SCIPdebugMessage, SCIPlpiGetBounds(), SCIPlpiGetNNonz(), SCIP_LPi::spx, SCIP_LPi::task, and SCIP_LPi::xprslp.
Referenced by SCIPlpiGetPrimalRay(), and SCIPlpiScaleCol().
gets rows from LP problem object; the arrays have to be large enough to store all values. Either both, lhs and rhs, have to be NULL, or both have to be non-NULL, either nnonz, beg, ind, and val have to be NULL, or all of them have to be non-NULL.
gets rows from LP problem object; the arrays have to be large enough to store all values. Either both, lhs and rhs, have to be 0, or both have to be non-0, either nnonz, beg, ind, and val have to be 0, or all of them have to be non-0.
- Parameters
-
| lpi | LP interface structure |
| firstrow | first row to get from LP |
| lastrow | last row to get from LP |
| lhs | buffer to store left hand side vector, or NULL |
| rhs | buffer to store right hand side vector, or NULL |
| nnonz | pointer to store the number of nonzero elements returned, or NULL |
| beg | buffer to store start index of each row in ind- and val-array, or NULL |
| ind | buffer to store row indices of constraint matrix entries, or NULL |
| val | buffer to store values of constraint matrix entries, or NULL |
Definition at line 1379 of file lpi_clp.cpp.
References BMSallocMemoryArray, BMSclearMemoryArray, BMScopyMemoryArray, BMSfreeMemoryArray, CHECK_ZERO, SCIP_LPi::clp, SCIP_LPi::cpxenv, SCIP_LPi::cpxlp, ensureRowMem(), ensureSidechgMem(), errorMessage(), getASlice(), SCIP_LPi::grbmodel, SCIP_LPi::ircnt, SCIP_LPi::lpid, SCIP_LPi::messagehdlr, MosekEnv, NULL, SCIP_LPi::prob, QS_RETURN, QS_TESTG, reconvertSides(), SCIP_LPi::rhsarray, SCIP_LPi::rngarray, SCIP_ALLOC, SCIP_CALL, SCIP_INVALIDDATA, SCIP_OKAY, SCIP_PLUGINNOTFOUND, SCIPABORT, SCIPdebugMessage, SCIPerrorMessage, SCIPlpiGetNNonz(), SCIPlpiGetSides(), SCIP_LPi::senarray, SCIP_LPi::spx, SCIP_LPi::task, and SCIP_LPi::xprslp.
Referenced by scaleFirstRow(), and SCIPlpiScaleRow().
| SCIP_RETCODE SCIPlpiGetColNames |
( |
SCIP_LPI * |
lpi, |
|
|
int |
firstcol, |
|
|
int |
lastcol, |
|
|
char ** |
colnames, |
|
|
char * |
namestorage, |
|
|
int |
namestoragesize, |
|
|
int * |
storageleft |
|
) |
| |
gets column names
- Parameters
-
| lpi | LP interface structure |
| firstcol | first column to get name from LP |
| lastcol | last column to get name from LP |
| colnames | pointers to column names (of size at least lastcol-firstcol+1) |
| namestorage | storage for col names |
| namestoragesize | size of namestorage (if 0, storageleft returns the storage needed) |
| storageleft | amount of storage left (if < 0 the namestorage was not big enough) |
Definition at line 1443 of file lpi_clp.cpp.
References BMSallocMemoryArray, CHECK_ZERO, SCIP_LPi::cpxenv, SCIP_LPi::cpxlp, errorMessage(), SCIP_LPi::messagehdlr, NULL, SCIP_LPi::prob, QS_ERROR, SCIP_ALLOC, SCIP_LPERROR, SCIP_OKAY, SCIP_PLUGINNOTFOUND, SCIPdebugMessage, SCIPerrorMessage, and SCIP_LPi::spx.
| SCIP_RETCODE SCIPlpiGetRowNames |
( |
SCIP_LPI * |
lpi, |
|
|
int |
firstrow, |
|
|
int |
lastrow, |
|
|
char ** |
rownames, |
|
|
char * |
namestorage, |
|
|
int |
namestoragesize, |
|
|
int * |
storageleft |
|
) |
| |
gets row names
- Parameters
-
| lpi | LP interface structure |
| firstrow | first row to get name from LP |
| lastrow | last row to get name from LP |
| rownames | pointers to row names (of size at least lastrow-firstrow+1) |
| namestorage | storage for row names |
| namestoragesize | size of namestorage (if 0, -storageleft returns the storage needed) |
| storageleft | amount of storage left (if < 0 the namestorage was not big enough) |
Definition at line 1459 of file lpi_clp.cpp.
References BMSallocMemoryArray, CHECK_ZERO, SCIP_LPi::cpxenv, SCIP_LPi::cpxlp, errorMessage(), SCIP_LPi::messagehdlr, NULL, SCIP_LPi::prob, QS_ERROR, SCIP_ALLOC, SCIP_LPERROR, SCIP_OKAY, SCIP_PLUGINNOTFOUND, SCIPdebugMessage, SCIPerrorMessage, and SCIP_LPi::spx.
gets objective coefficients from LP problem object
- Parameters
-
| lpi | LP interface structure |
| firstcol | first column to get objective coefficient for |
| lastcol | last column to get objective coefficient for |
| vals | array to store objective coefficients |
Definition at line 1513 of file lpi_clp.cpp.
References BMScopyMemoryArray, CHECK_ZERO, SCIP_LPi::clp, SCIP_LPi::cpxenv, SCIP_LPi::cpxlp, ensureColMem(), errorMessage(), SCIP_LPi::grbmodel, SCIP_LPi::iccnt, SCIP_LPi::lpid, SCIP_LPi::messagehdlr, MOSEK_CALL, MosekEnv, NULL, SCIP_LPi::prob, QS_RETURN, SCIP_CALL, SCIP_OKAY, SCIP_PLUGINNOTFOUND, SCIPdebugMessage, SCIP_LPi::spx, SCIP_LPi::task, and SCIP_LPi::xprslp.
Referenced by lpFlushChgCols(), lpLexDualSimplex(), SCIPlpiScaleCol(), and SCIPlpMarkFlushed().
gets current bounds from LP problem object
- Parameters
-
| lpi | LP interface structure |
| firstcol | first column to get bounds for |
| lastcol | last column to get bounds for |
| lbs | array to store lower bound values, or NULL |
| ubs | array to store upper bound values, or NULL |
Definition at line 1536 of file lpi_clp.cpp.
References BMScopyMemoryArray, CHECK_ZERO, SCIP_LPi::clp, SCIP_LPi::cpxenv, SCIP_LPi::cpxlp, ensureColMem(), errorMessage(), SCIP_LPi::grbmodel, SCIP_LPi::iccnt, SCIP_LPi::lpid, SCIP_LPi::messagehdlr, MOSEK_CALL, MosekEnv, NULL, SCIP_LPi::prob, QS_RETURN, SCIP_CALL, SCIP_OKAY, SCIP_PLUGINNOTFOUND, SCIPdebugMessage, SCIP_LPi::spx, SCIP_LPi::task, and SCIP_LPi::xprslp.
Referenced by checkLPBoundsClean(), lpFlushChgCols(), lpLexDualSimplex(), SCIPlpiGetCols(), and SCIPlpMarkFlushed().
gets current row sides from LP problem object
- Parameters
-
| lpi | LP interface structure |
| firstrow | first row to get sides for |
| lastrow | last row to get sides for |
| lhss | array to store left hand side values, or NULL |
| rhss | array to store right hand side values, or NULL |
Definition at line 1567 of file lpi_clp.cpp.
References BMSclearMemoryArray, BMScopyMemoryArray, CHECK_ZERO, SCIP_LPi::clp, SCIP_LPi::cpxenv, SCIP_LPi::cpxlp, ensureRowMem(), ensureSidechgMem(), errorMessage(), SCIP_LPi::grbmodel, SCIP_LPi::ircnt, SCIP_LPi::lpid, SCIP_LPi::messagehdlr, MOSEK_CALL, MosekEnv, NULL, SCIP_LPi::prob, QS_RETURN, QS_TESTG, reconvertSides(), SCIP_LPi::rhsarray, SCIP_LPi::rngarray, SCIP_CALL, SCIP_INVALIDDATA, SCIP_OKAY, SCIP_PLUGINNOTFOUND, SCIPABORT, SCIPdebugMessage, SCIPerrorMessage, SCIP_LPi::senarray, SCIP_LPi::spx, SCIP_LPi::task, and SCIP_LPi::xprslp.
Referenced by lpFlushChgRows(), lpLexDualSimplex(), SCIPlpiGetRows(), SCIPlpMarkFlushed(), and undoBdchgsDualfarkas().
gets a single coefficient
- Parameters
-
| lpi | LP interface structure |
| row | row number of coefficient |
| col | column number of coefficient |
| val | pointer to store the value of the coefficient |
Definition at line 1598 of file lpi_clp.cpp.
References BMSallocMemoryArray, BMSfreeMemoryArray, CHECK_ZERO, SCIP_LPi::clp, SCIP_LPi::cpxenv, SCIP_LPi::cpxlp, errorMessage(), SCIP_LPi::grbmodel, SCIP_LPi::lpid, SCIP_LPi::messagehdlr, MOSEK_CALL, MosekEnv, NULL, SCIP_LPi::prob, QS_RETURN, SCIP_ALLOC, SCIP_CALL, SCIP_OKAY, SCIP_PLUGINNOTFOUND, SCIPdebugMessage, SCIP_LPi::spx, SCIP_LPi::task, and SCIP_LPi::xprslp.
calls primal simplex to solve the LP
calls primal simplex to solve the LP
startFinishOptions - bits 1 - do not delete work areas and factorization at end 2 - use old factorization if same number of rows 4 - skip as much initialization of work areas as possible (work in progress)
4 does not seem to work.
Primal algorithm
- Parameters
-
| lpi | LP interface structure |
Definition at line 1632 of file lpi_clp.cpp.
References CHECK_ZERO, SCIP_LPi::clearstate, SCIP_LPi::clp, SCIP_LPi::cpxenv, SCIP_LPi::cpxlp, SCIP_LPi::cpxparam, errorMessage(), FALSE, SCIP_LPi::fromscratch, getIntParam(), GRB_INT_PAR_METHOD, GRB_METHOD_PRIMAL, SCIP_LPi::grbenv, SCIP_LPi::grbmodel, SCIP_LPi::grbparam, SCIP_LPi::instabilityignored, invalidateSolution(), SCIP_LPi::iterations, SCIP_LPi::lpid, lpiSolve(), SCIP_LPi::messagehdlr, MOSEK_CALL, NULL, numprimalmaxiter, numprimalobj, optimizecount, presolve(), SCIP_LPi::prob, QS_RETURN, SCIP_LPi::rowrepswitch, SCIP_Bool, SCIP_CALL, SCIP_LPERROR, SCIP_NOMEMORY, SCIP_OKAY, SCIP_PLUGINNOTFOUND, SCIPdebugMessage, SCIPerrorMessage, SCIPlpiWriteLP(), SCIPlpiWriteState(), setFactorizationFrequency(), setIntParam(), setParameterValues(), SCIP_LPi::solisbasic, SCIP_LPi::solmethod, SCIP_LPi::solstat, SCIP_LPi::solved, SolveWSimplex(), SCIP_LPi::spx, spxSolve(), SCIP_LPi::startscratch, SCIP_LPi::task, SCIP_LPi::termcode, TRUE, SCIP_LPi::validFactorization, and WRITE_ABOVE.
Referenced by checkAltLPInfeasible(), handle_singular(), lpLexDualSimplex(), lpPrimalSimplex(), and SCIPlpiHasDualRay().
calls dual simplex to solve the LP
calls dual simplex to solve the LP
startFinishOptions - bits 1 - do not delete work areas and factorization at end 2 - use old factorization if same number of rows 4 - skip as much initialization of work areas as possible (work in progress)
4 does not seem to work.
Dual algorithm
- Parameters
-
| lpi | LP interface structure |
Definition at line 1705 of file lpi_clp.cpp.
References CHECK_ZERO, SCIP_LPi::clearstate, SCIP_LPi::clp, SCIP_LPi::cpxenv, SCIP_LPi::cpxlp, SCIP_LPi::cpxparam, errorMessage(), FALSE, SCIP_LPi::fromscratch, getDblParam(), getIntParam(), GRB_INT_PAR_METHOD, GRB_METHOD_DUAL, SCIP_LPi::grbenv, SCIP_LPi::grbmodel, SCIP_LPi::grbparam, SCIP_LPi::instabilityignored, invalidateSolution(), SCIP_LPi::iterations, SCIP_LPi::lpid, lpiSolve(), SCIP_LPi::messagehdlr, MOSEK_CALL, NULL, numdualmaxiter, numdualobj, optimizecount, presolve(), SCIP_LPi::prob, QS_RETURN, SCIP_LPi::rowrepswitch, SCIP_Bool, SCIP_CALL, SCIP_LPERROR, SCIP_NOMEMORY, SCIP_OKAY, SCIP_PLUGINNOTFOUND, SCIP_Real, SCIPdebugMessage, SCIPerrorMessage, SCIPlpiGetObjval(), SCIPlpiIsObjlimExc(), SCIPlpiWriteLP(), SCIPlpiWriteState(), setDblParam(), setFactorizationFrequency(), setIntParam(), setParameterValues(), SCIP_LPi::solisbasic, SCIP_LPi::solmethod, SCIP_LPi::solstat, SCIP_LPi::solved, SolveWSimplex(), SCIP_LPi::spx, spxSolve(), SCIP_LPi::startscratch, SCIP_LPi::task, SCIP_LPi::termcode, TRUE, SCIP_LPi::validFactorization, and WRITE_ABOVE.
Referenced by addConcaveEstimatorMultivariate(), checkAltLPInfeasible(), conflictAnalyzeLP(), lpDualSimplex(), lpiStrongbranch(), lpiStrongbranches(), lpiStrongbranchIntegral(), lpLexDualSimplex(), SCIPconflictAnalyzeStrongbranch(), SCIPlpComputeRelIntPoint(), SCIPlpiSolveBarrier(), SCIPlpiStrongbranch(), and SCIPlpiStrongbranchFrac().
calls barrier or interior point algorithm to solve the LP with crossover to simplex basis
- Parameters
-
| lpi | LP interface structure |
| crossover | perform crossover |
Definition at line 1780 of file lpi_clp.cpp.
References CHECK_ZERO, SCIP_LPi::clearstate, SCIP_LPi::clp, SCIP_LPi::cpxenv, SCIP_LPi::cpxlp, SCIP_LPi::cpxparam, errorMessage(), FALSE, filterTRMrescode(), SCIP_LPi::fromscratch, getIntParam(), GRB_INT_PAR_METHOD, SCIP_LPi::grbenv, SCIP_LPi::grbmodel, SCIP_LPi::grbparam, SCIP_LPi::instabilityignored, invalidateSolution(), SCIP_LPi::iterations, SCIP_LPi::itercount, SCIP_LPi::lpid, lpiSolve(), SCIP_LPi::messagehdlr, MOSEK_CALL, MosekEnv, NULL, numdualmaxiter, optimizecount, presolve(), SCIP_CALL, SCIP_INVALIDCALL, SCIP_LPERROR, SCIP_NOMEMORY, SCIP_OKAY, SCIP_PLUGINNOTFOUND, SCIPdebugMessage, SCIPerrorMessage, SCIPlpiSolveDual(), setIntParam(), setParameterValues(), SCIP_LPi::solisbasic, SCIP_LPi::solmethod, SCIP_LPi::solstat, SCIP_LPi::solved, SCIP_LPi::task, SCIP_LPi::termcode, TRUE, WRITE_ABOVE, and SCIP_LPi::xprslp.
Referenced by lpBarrier(), and SolveWSimplex().
performs strong branching iterations on one fractional candidate
- Parameters
-
| lpi | LP interface structure |
| col | column to apply strong branching on |
| psol | fractional current primal solution value of column |
| itlim | iteration limit for strong branchings |
| down | stores dual bound after branching column down |
| up | stores dual bound after branching column up |
| downvalid | stores whether the returned down value is a valid dual bound; otherwise, it can only be used as an estimate value |
| upvalid | stores whether the returned up value is a valid dual bound; otherwise, it can only be used as an estimate value |
| iter | stores total number of strong branching iterations, or -1; may be NULL |
Definition at line 2169 of file lpi_clp.cpp.
References BMSallocMemoryArray, BMSfreeMemoryArray, CHECK_ZERO, SCIP_LPi::clearstate, CPX_INT_MAX, SCIP_LPi::cpxenv, SCIP_LPi::cpxlp, SCIP_LPi::cpxparam, EPSCEIL, EPSFLOOR, EPSISINT, errorMessage(), FALSE, SCIP_LPi::feastol, SCIP_LPi::fromscratch, getBase(), getDblParam(), getIntParam(), lpiStrongbranch(), SCIP_LPi::messagehdlr, NULL, SCIP_LPi::previt, SCIP_LPi::prob, QS_CONDRET, SCIP_ALLOC, SCIP_CALL, SCIP_LPERROR, SCIP_OKAY, SCIP_PLUGINNOTFOUND, SCIP_Real, SCIPdebugMessage, SCIPlpiGetIterations(), SCIPlpiGetObjval(), SCIPlpiIsIterlimExc(), SCIPlpiIsObjlimExc(), SCIPlpiIsOptimal(), SCIPlpiIsPrimalInfeasible(), SCIPlpiSolveDual(), SCIPlpiStrongbranch(), setBase(), setIntParam(), setParameterValues(), and TRUE.
Referenced by SCIPcolGetStrongbranch().
performs strong branching iterations on given fractional candidates
- Parameters
-
| lpi | LP interface structure |
| cols | columns to apply strong branching on |
| ncols | number of columns |
| psols | fractional current primal solution values of columns |
| itlim | iteration limit for strong branchings |
| down | stores dual bounds after branching columns down |
| up | stores dual bounds after branching columns up |
| downvalid | stores whether the returned down values are valid dual bounds; otherwise, they can only be used as an estimate values |
| upvalid | stores whether the returned up values are a valid dual bounds; otherwise, they can only be used as an estimate values |
| iter | stores total number of strong branching iterations, or -1; may be NULL |
Definition at line 2190 of file lpi_clp.cpp.
References CHECK_ZERO, SCIP_LPi::clearstate, SCIP_LPi::cpxenv, SCIP_LPi::cpxlp, SCIP_LPi::cpxparam, EPSISINT, errorMessage(), FALSE, SCIP_LPi::feastol, SCIP_LPi::fromscratch, lpiStrongbranch(), lpiStrongbranches(), SCIP_LPi::messagehdlr, NULL, SCIP_LPi::previt, SCIP_LPi::prob, QS_CONDRET, SCIP_CALL, SCIP_LPERROR, SCIP_OKAY, SCIP_PLUGINNOTFOUND, SCIPdebugMessage, SCIPlpiStrongbranch(), setIntParam(), setParameterValues(), and TRUE.
Referenced by SCIPcolGetStrongbranches().
performs strong branching iterations on one candidate with integral value
- Parameters
-
| lpi | LP interface structure |
| col | column to apply strong branching on |
| psol | current integral primal solution value of column |
| itlim | iteration limit for strong branchings |
| down | stores dual bound after branching column down |
| up | stores dual bound after branching column up |
| downvalid | stores whether the returned down value is a valid dual bound; otherwise, it can only be used as an estimate value |
| upvalid | stores whether the returned up value is a valid dual bound; otherwise, it can only be used as an estimate value |
| iter | stores total number of strong branching iterations, or -1; may be NULL |
Definition at line 2215 of file lpi_clp.cpp.
References SCIP_LPi::cpxlp, EPSISINT, errorMessage(), SCIP_LPi::feastol, lpiStrongbranch(), lpiStrongbranchIntegral(), NULL, SCIP_LPi::prob, QS_CONDRET, SCIP_CALL, SCIP_LPERROR, SCIP_OKAY, SCIP_PLUGINNOTFOUND, SCIP_Real, SCIPdebugMessage, SCIPlpiStrongbranch(), and TRUE.
Referenced by SCIPcolGetStrongbranch().
performs strong branching iterations on given candidates with integral values
- Parameters
-
| lpi | LP interface structure |
| cols | columns to apply strong branching on |
| ncols | number of columns |
| psols | current integral primal solution values of columns |
| itlim | iteration limit for strong branchings |
| down | stores dual bounds after branching columns down |
| up | stores dual bounds after branching columns up |
| downvalid | stores whether the returned down values are valid dual bounds; otherwise, they can only be used as an estimate values |
| upvalid | stores whether the returned up values are a valid dual bounds; otherwise, they can only be used as an estimate values |
| iter | stores total number of strong branching iterations, or -1; may be NULL |
Definition at line 2236 of file lpi_clp.cpp.
References SCIP_LPi::cpxlp, EPSISINT, errorMessage(), SCIP_LPi::feastol, lpiStrongbranch(), lpiStrongbranches(), lpiStrongbranchIntegral(), NULL, SCIP_LPi::prob, QS_CONDRET, SCIP_CALL, SCIP_LPERROR, SCIP_OKAY, SCIP_PLUGINNOTFOUND, SCIP_Real, SCIPdebugMessage, SCIPlpiStrongbranch(), and TRUE.
Referenced by SCIPcolGetStrongbranches().
returns whether a solve method was called after the last modification of the LP
- Parameters
-
| lpi | LP interface structure |
Definition at line 2271 of file lpi_clp.cpp.
References errorMessageAbort(), FALSE, getSolutionStatus(), SCIP_LPi::lpid, MosekEnv, NULL, SCIP_LPi::prob, SCIP_CALL_ABORT, SCIPdebugMessage, SCIP_LPi::solstat, SCIP_LPi::solved, and SCIP_LPi::task.
Referenced by performStrongbranchWithPropagation(), and SCIPconflictAnalyzeLP().
gets information about primal and dual feasibility of the current LP solution
gets information about primal and dual feasibility of the current LP solution here "true" should mean feasible, "false" should mean unknown
- Parameters
-
| lpi | LP interface structure |
| primalfeasible | stores primal feasibility status |
| dualfeasible | stores dual feasibility status |
Definition at line 2281 of file lpi_clp.cpp.
References CHECK_ZERO, SCIP_LPi::clp, SCIP_LPi::cpxenv, SCIP_LPi::cpxlp, errorMessage(), FALSE, GRB_INT_PAR_METHOD, GRB_METHOD_DUAL, GRB_METHOD_PRIMAL, SCIP_LPi::grbenv, SCIP_LPi::grbmodel, SCIP_LPi::lpid, SCIP_LPi::messagehdlr, MOSEK_CALL, MosekEnv, NULL, SCIP_LPi::prob, SCIP_Bool, SCIP_LPERROR, SCIP_OKAY, SCIP_PLUGINNOTFOUND, SCIP_Real, SCIPdebugMessage, SCIPlpiIsDualFeasible(), SCIPlpiIsPrimalFeasible(), SCIP_LPi::solmethod, SCIP_LPi::solstat, SUMINFEASBOUND, SCIP_LPi::task, TRUE, XPRS_LP_OPTIMAL_SCALEDINFEAS, and SCIP_LPi::xprslp.
Referenced by lpAlgorithm(), SCIPlpiIsPrimalUnbounded(), and SCIPlpiStrongbranch().
returns TRUE iff LP is proven to have a primal unbounded ray (but not necessary a primal feasible point); this does not necessarily mean, that the solver knows and can return the primal ray
- Parameters
-
| lpi | LP interface structure |
Definition at line 2326 of file lpi_clp.cpp.
References SCIP_LPi::clp, SCIP_LPi::cpxlp, errorMessageAbort(), FALSE, getSolutionStatus(), SCIP_LPi::grbmodel, SCIP_LPi::lpid, MosekEnv, NULL, SCIP_LPi::prob, SCIP_CALL_ABORT, SCIPdebugMessage, SCIP_LPi::solstat, SCIP_LPi::spx, SCIP_LPi::task, and SCIP_LPi::xprslp.
Referenced by checkAltLPInfeasible(), lpSolve(), SCIPlpiIsDualInfeasible(), and SCIPlpiStrongbranch().
returns TRUE iff LP is proven to have a primal unbounded ray (but not necessary a primal feasible point), and the solver knows and can return the primal ray
- Parameters
-
| lpi | LP interface structure |
Definition at line 2344 of file lpi_clp.cpp.
References CHECK_ZERO, SCIP_LPi::clp, SCIP_LPi::cpxenv, SCIP_LPi::cpxlp, errorMessageAbort(), FALSE, getSolutionStatus(), SCIP_LPi::grbmodel, SCIP_LPi::lpid, MosekEnv, NULL, SCIP_LPi::prob, SCIP_CALL_ABORT, SCIPdebugMessage, SCIP_LPi::solstat, SCIP_LPi::spx, SCIP_LPi::task, TRUE, SCIP_LPi::unbvec, and SCIP_LPi::xprslp.
Referenced by lpSolve(), SCIPlpGetPrimalRay(), and SCIPlpGetUnboundedSol().
returns TRUE iff LP is proven to be primal unbounded
returns TRUE iff LP is proven to be primal feasible and unbounded
- Parameters
-
| lpi | LP interface structure |
Definition at line 2360 of file lpi_clp.cpp.
References ABORT_ZERO, SCIP_LPi::clp, SCIP_LPi::cpxenv, SCIP_LPi::cpxlp, errorMessageAbort(), FALSE, SCIP_LPi::grbmodel, NULL, SCIP_LPi::prob, SCIP_Bool, SCIP_OKAY, SCIPdebugMessage, SCIPlpiGetSolFeasibility(), SCIP_LPi::solmethod, SCIP_LPi::solstat, SCIP_LPi::spx, and SCIP_LPi::xprslp.
Referenced by addConcaveEstimatorMultivariate(), and checkAltLPInfeasible().
returns TRUE iff LP is proven to be primal infeasible
- Parameters
-
| lpi | LP interface structure |
Definition at line 2374 of file lpi_clp.cpp.
References ABORT_ZERO, SCIP_LPi::clp, SCIP_LPi::cpxenv, SCIP_LPi::cpxlp, errorMessageAbort(), FALSE, SCIP_LPi::grbmodel, NULL, SCIP_LPi::prob, SCIPdebugMessage, SCIPlpiExistsDualRay(), SCIP_LPi::solstat, SCIP_LPi::spx, and SCIP_LPi::xprslp.
Referenced by checkAltLPInfeasible(), conflictAnalyzeLP(), lpiStrongbranch(), lpiStrongbranches(), lpiStrongbranchIntegral(), lpSolve(), SCIPconflictAnalyzeLP(), and SCIPlpiStrongbranchFrac().
returns TRUE iff LP is proven to be primal feasible
- Parameters
-
| lpi | LP interface structure |
Definition at line 2393 of file lpi_clp.cpp.
References ABORT_ZERO, CHECK_ZERO, SCIP_LPi::clp, SCIP_LPi::cpxenv, SCIP_LPi::cpxlp, errorMessageAbort(), FALSE, getSolutionStatus(), GRB_INT_PAR_METHOD, GRB_METHOD_PRIMAL, SCIP_LPi::grbenv, SCIP_LPi::grbmodel, SCIP_LPi::lpid, SCIP_LPi::messagehdlr, MosekEnv, NULL, SCIP_LPi::prob, SCIP_Bool, SCIP_CALL_ABORT, SCIPdebugMessage, SCIP_LPi::solmethod, SCIP_LPi::solstat, SCIP_LPi::spx, SCIP_LPi::task, XPRS_LP_OPTIMAL_SCALEDINFEAS, and SCIP_LPi::xprslp.
Referenced by addConcaveEstimatorMultivariate(), lpSolve(), SCIPlpiGetSolFeasibility(), and SCIPlpiIsOptimal().
returns TRUE iff LP is proven to have a dual unbounded ray (but not necessary a dual feasible point); this does not necessarily mean, that the solver knows and can return the dual ray
- Parameters
-
| lpi | LP interface structure |
Definition at line 2409 of file lpi_clp.cpp.
References SCIP_LPi::clp, errorMessageAbort(), FALSE, getSolutionStatus(), SCIP_LPi::grbmodel, SCIP_LPi::lpid, MosekEnv, NULL, SCIP_LPi::prob, SCIP_CALL_ABORT, SCIPdebugMessage, SCIP_LPi::solstat, SCIP_LPi::spx, SCIP_LPi::task, and SCIP_LPi::xprslp.
Referenced by SCIPlpiGetState(), SCIPlpiIsPrimalInfeasible(), and SCIPlpiStrongbranch().
returns TRUE iff LP is proven to have a dual unbounded ray (but not necessary a dual feasible point), and the solver knows and can return the dual ray
- Parameters
-
| lpi | LP interface structure |
Definition at line 2427 of file lpi_clp.cpp.
References CHECK_ZERO, SCIP_LPi::clp, SCIP_LPi::cpxenv, SCIP_LPi::cpxlp, errorMessageAbort(), FALSE, getSolutionStatus(), GRB_INT_PAR_METHOD, GRB_METHOD_DUAL, SCIP_LPi::grbenv, SCIP_LPi::grbmodel, SCIP_LPi::lpid, SCIP_LPi::messagehdlr, MosekEnv, NULL, SCIP_LPi::prob, SCIP_CALL, SCIP_CALL_ABORT, SCIPdebugMessage, SCIPlpiSolvePrimal(), SCIP_LPi::solmethod, SCIP_LPi::solstat, SCIP_LPi::spx, SCIP_LPi::task, TRUE, and SCIP_LPi::xprslp.
Referenced by lpSolve(), SCIPlpSolveAndEval(), and undoBdchgsDualfarkas().
returns TRUE iff LP is proven to be dual unbounded
returns TRUE iff LP is dual unbounded
- Parameters
-
| lpi | LP interface structure |
Definition at line 2455 of file lpi_clp.cpp.
References ABORT_ZERO, CHECK_ZERO, SCIP_LPi::clp, SCIP_LPi::cpxenv, SCIP_LPi::cpxlp, errorMessageAbort(), FALSE, GRB_INT_PAR_METHOD, GRB_METHOD_DUAL, SCIP_LPi::grbenv, SCIP_LPi::grbmodel, SCIP_LPi::messagehdlr, NULL, SCIP_LPi::prob, SCIPdebugMessage, SCIP_LPi::solmethod, SCIP_LPi::solstat, SCIP_LPi::spx, and SCIP_LPi::xprslp.
returns TRUE iff LP is proven to be dual infeasible
returns TRUE iff LP is dual infeasible
- Parameters
-
| lpi | LP interface structure |
Definition at line 2472 of file lpi_clp.cpp.
References ABORT_ZERO, SCIP_LPi::clp, SCIP_LPi::cpxenv, SCIP_LPi::cpxlp, errorMessageAbort(), FALSE, SCIP_LPi::grbmodel, NULL, SCIP_LPi::prob, SCIPdebugMessage, SCIPlpiExistsPrimalRay(), SCIP_LPi::solstat, SCIP_LPi::spx, and SCIP_LPi::xprslp.
returns TRUE iff LP is proven to be dual feasible
- Parameters
-
| lpi | LP interface structure |
Definition at line 2486 of file lpi_clp.cpp.
References ABORT_ZERO, CHECK_ZERO, SCIP_LPi::clp, SCIP_LPi::cpxenv, SCIP_LPi::cpxlp, errorMessageAbort(), FALSE, getSolutionStatus(), GRB_INT_PAR_METHOD, GRB_METHOD_DUAL, SCIP_LPi::grbenv, SCIP_LPi::grbmodel, SCIP_LPi::lpid, SCIP_LPi::messagehdlr, MosekEnv, NULL, SCIP_LPi::prob, SCIP_Bool, SCIP_CALL_ABORT, SCIPdebugMessage, SCIP_LPi::solmethod, SCIP_LPi::solstat, SCIP_LPi::spx, SCIP_LPi::task, XPRS_LP_OPTIMAL_SCALEDINFEAS, and SCIP_LPi::xprslp.
Referenced by conflictAnalyzeLP(), lpSolve(), performStrongbranchWithPropagation(), SCIPlpiGetSolFeasibility(), and SCIPlpiIsOptimal().
returns TRUE iff LP was solved to optimality
- Parameters
-
| lpi | LP interface structure |
Definition at line 2500 of file lpi_clp.cpp.
References SCIP_LPi::clp, errorMessageAbort(), FALSE, getSolutionStatus(), SCIP_LPi::grbmodel, SCIP_LPi::lpid, MosekEnv, NULL, SCIP_LPi::prob, SCIP_CALL_ABORT, SCIPdebugMessage, SCIPlpiIsDualFeasible(), SCIPlpiIsObjlimExc(), SCIPlpiIsPrimalFeasible(), SCIP_LPi::solstat, SCIP_LPi::spx, SCIP_LPi::task, XPRS_LP_OPTIMAL_SCALEDINFEAS, and SCIP_LPi::xprslp.
Referenced by addConcaveEstimatorMultivariate(), checkAltLPInfeasible(), conflictAnalyzeLP(), lpiStrongbranch(), lpiStrongbranches(), lpiStrongbranchIntegral(), lpLexDualSimplex(), lpSolve(), SCIPlpComputeRelIntPoint(), SCIPlpiIsStable(), and SCIPlpiStrongbranchFrac().
returns TRUE iff current LP basis is stable
- Parameters
-
| lpi | LP interface structure |
Definition at line 2518 of file lpi_clp.cpp.
References ABORT_ZERO, CHECK_ZERO, SCIP_LPi::checkcondition, SCIP_LPi::clp, SCIP_LPi::conditionlimit, SCIP_LPi::cpxenv, SCIP_LPi::cpxlp, errorMessageAbort(), FALSE, SCIP_LPi::grbmodel, MosekEnv, NULL, SCIP_LPi::prob, SCIP_CALL_ABORT, SCIP_INVALID, SCIP_LPSOLQUALITY_ESTIMCONDITION, SCIP_OKAY, SCIP_Real, SCIPABORT, SCIPdebugMessage, SCIPlpiGetRealSolQuality(), SCIPlpiIsObjlimExc(), SCIPlpiIsOptimal(), SCIP_LPi::solstat, SCIP_LPi::spx, SCIP_LPi::task, SCIP_LPi::termcode, TRUE, XPRS_LP_OPTIMAL_SCALEDINFEAS, and SCIP_LPi::xprslp.
Referenced by checkAltLPInfeasible(), lpSolveStable(), and SCIPlpiStrongbranch().
returns TRUE iff the objective limit was reached
- Parameters
-
| lpi | LP interface structure |
Definition at line 2556 of file lpi_clp.cpp.
References SCIP_LPi::clp, errorMessageAbort(), FALSE, SCIP_LPi::grbmodel, MosekEnv, NULL, SCIP_LPi::prob, SCIPdebugMessage, SCIP_LPi::solstat, SCIP_LPi::spx, SCIP_LPi::task, SCIP_LPi::termcode, TRUE, and SCIP_LPi::xprslp.
Referenced by addConcaveEstimatorMultivariate(), conflictAnalyzeLP(), lpiStrongbranch(), lpiStrongbranches(), lpiStrongbranchIntegral(), lpSolve(), SCIPlpiIsOptimal(), SCIPlpiIsStable(), SCIPlpiSolveDual(), SCIPlpiStrongbranchFrac(), and SCIPlpSolveAndEval().
returns TRUE iff the iteration limit was reached
- Parameters
-
| lpi | LP interface structure |
Definition at line 2588 of file lpi_clp.cpp.
References CHECK_ZERO, SCIP_LPi::clp, errorMessageAbort(), FALSE, SCIP_LPi::grbmodel, MosekEnv, NULL, SCIP_LPi::prob, SCIPdebugMessage, SCIP_LPi::solstat, SCIP_LPi::spx, SCIP_LPi::task, SCIP_LPi::termcode, TRUE, and SCIP_LPi::xprslp.
Referenced by addConcaveEstimatorMultivariate(), lpiStrongbranch(), lpiStrongbranches(), lpiStrongbranchIntegral(), lpSolve(), lpSolveStable(), SCIPlpComputeRelIntPoint(), and SCIPlpiStrongbranchFrac().
returns TRUE iff the time limit was reached
- Parameters
-
| lpi | LP interface structure |
Definition at line 2604 of file lpi_clp.cpp.
References CHECK_ZERO, SCIP_LPi::clp, errorMessageAbort(), FALSE, SCIP_LPi::grbmodel, MosekEnv, NULL, SCIP_LPi::prob, SCIPdebugMessage, SCIP_LPi::solstat, SCIP_LPi::spx, SCIP_LPi::task, SCIP_LPi::termcode, TRUE, and SCIP_LPi::xprslp.
Referenced by lpSolve(), and SCIPlpComputeRelIntPoint().
| int SCIPlpiGetInternalStatus |
( |
SCIP_LPI * |
lpi | ) |
|
returns the internal solution status of the solver
- Parameters
-
| lpi | LP interface structure |
Definition at line 2620 of file lpi_clp.cpp.
References SCIP_LPi::clp, SCIP_LPi::cpxlp, errorMessageAbort(), FALSE, getSolutionStatus(), SCIP_LPi::grbmodel, SCIP_LPi::lpid, MosekEnv, NULL, SCIP_LPi::prob, SCIP_OKAY, SCIPdebugMessage, SCIP_LPi::solstat, SCIP_LPi::spx, SCIP_LPi::task, and SCIP_LPi::xprslp.
Referenced by checkAltLPInfeasible(), and lpSolve().
tries to reset the internal status of the LP solver in order to ignore an instability of the last solving call
- Parameters
-
| lpi | LP interface structure |
| success | pointer to store, whether the instability could be ignored |
Definition at line 1475 of file lpi_clp.cpp.
References SCIP_LPi::clp, SCIP_LPi::cpxlp, errorMessage(), FALSE, SCIP_LPi::grbmodel, SCIP_LPi::instabilityignored, SCIP_LPi::lpid, MosekEnv, NULL, SCIP_LPi::prob, SCIP_OKAY, SCIP_PLUGINNOTFOUND, SCIPdebugMessage, SCIP_LPi::solstat, SCIP_LPi::spx, SCIP_LPi::task, TRUE, and SCIP_LPi::xprslp.
Referenced by lpSolveStable().
gets objective value of solution
gets objective value of solution
- Note
- if the solution status is iteration limit reached (GRB_ITERATION_LIMIT), the objective value was not computed
- Parameters
-
| lpi | LP interface structure |
| objval | stores the objective value |
Definition at line 2634 of file lpi_clp.cpp.
References CHECK_ZERO, SCIP_LPi::clp, SCIP_LPi::cpxenv, SCIP_LPi::cpxlp, errorMessage(), SCIP_LPi::grbmodel, SCIP_LPi::lpid, SCIP_LPi::messagehdlr, MOSEK_CALL, MosekEnv, NULL, SCIP_LPi::prob, QS_RETURN, SCIP_OKAY, SCIP_PLUGINNOTFOUND, SCIPdebugMessage, SCIPlpiInfinity(), SCIP_LPi::spx, SCIP_LPi::task, and SCIP_LPi::xprslp.
Referenced by conflictAnalyzeLP(), lpiStrongbranch(), lpiStrongbranches(), lpiStrongbranchIntegral(), lpSolve(), performStrongbranchWithPropagation(), SCIPlpiSolveDual(), SCIPlpiStrongbranchFrac(), SCIPlpSolveAndEval(), and undoBdchgsDualsol().
gets primal and dual solution vectors for feasible LPs
gets primal and dual solution vectors
- Parameters
-
| lpi | LP interface structure |
| objval | stores the objective value, may be NULL if not needed |
| primsol | primal solution vector, may be NULL if not needed |
| dualsol | dual solution vector, may be NULL if not needed |
| activity | row activity vector, may be NULL if not needed |
| redcost | reduced cost vector, may be NULL if not needed |
Definition at line 2652 of file lpi_clp.cpp.
References BMSallocMemoryArray, BMScopyMemoryArray, BMSfreeMemoryArray, CHECK_ZERO, SCIP_LPi::clp, SCIP_LPi::cpxenv, SCIP_LPi::cpxlp, ensureRowMem(), ensureSidechgMem(), ensureTabMem(), errorMessage(), SCIP_LPi::grbmodel, SCIP_LPi::ibas, SCIP_LPi::instabilityignored, SCIP_LPi::irhs, SCIP_LPi::irng, SCIP_LPi::isen, SCIP_LPi::lpid, SCIP_LPi::messagehdlr, MOSEK_CALL, MosekEnv, NULL, SCIP_LPi::prob, QS_CONDRET, SCIP_LPi::rhsarray, SCIP_ALLOC, SCIP_CALL, SCIP_INVALIDDATA, SCIP_LPERROR, SCIP_OKAY, SCIP_PLUGINNOTFOUND, SCIPABORT, SCIPdebugMessage, SCIPerrorMessage, SCIPmessagePrintWarning(), SCIP_LPi::senarray, SCIP_LPi::solstat, SCIP_LPi::spx, SCIP_LPi::task, and SCIP_LPi::xprslp.
Referenced by addConcaveEstimatorMultivariate(), extendToCover(), lpLexDualSimplex(), SCIPlpComputeRelIntPoint(), SCIPlpGetSol(), SCIPlpGetUnboundedSol(), and undoBdchgsDualsol().
gets primal ray for unbounded LPs
Unbounded ray (NULL returned if none/wrong). Up to user to use delete [] on these arrays.
- Parameters
-
| lpi | LP interface structure |
| ray | primal ray |
Definition at line 2696 of file lpi_clp.cpp.
References BMSallocMemoryArray, BMScopyMemoryArray, BMSfreeMemoryArray, CHECK_ZERO, SCIP_LPi::clp, SCIP_LPi::cpxenv, SCIP_LPi::cpxlp, SCIP_LPi::cstat, errorMessage(), getBase(), SCIP_LPi::grbmodel, SCIP_LPi::lpid, SCIP_LPi::messagehdlr, MOSEK_CALL, MosekEnv, NULL, SCIP_LPi::prob, SCIP_LPi::rstat, SCIP_ALLOC, SCIP_CALL, SCIP_LPERROR, SCIP_OKAY, SCIP_PLUGINNOTFOUND, SCIPdebugMessage, SCIPerrorMessage, SCIPlpiGetCols(), SCIPmessagePrintWarning(), SCIP_LPi::solmethod, SCIP_LPi::solstat, SCIP_LPi::spx, SCIP_LPi::task, SCIP_LPi::unbvec, and SCIP_LPi::xprslp.
Referenced by SCIPlpGetPrimalRay(), and SCIPlpGetUnboundedSol().
gets dual Farkas proof for infeasibility
gets dual farkas proof for infeasibility
Infeasibility ray (NULL returned if none/wrong). Up to user to use delete [] on these arrays.
- Parameters
-
| lpi | LP interface structure |
| dualfarkas | dual Farkas row multipliers |
Definition at line 2721 of file lpi_clp.cpp.
References BMScopyMemoryArray, CHECK_ZERO, SCIP_LPi::clp, SCIP_LPi::cpxenv, SCIP_LPi::cpxlp, errorMessage(), SCIP_LPi::grbmodel, SCIP_LPi::lpid, SCIP_LPi::messagehdlr, MOSEK_CALL, MosekEnv, NULL, SCIP_LPi::prob, QS_RETURN, SCIP_LPERROR, SCIP_OKAY, SCIP_PLUGINNOTFOUND, SCIPdebugMessage, SCIPmessagePrintWarning(), SCIP_LPi::solmethod, SCIP_LPi::solstat, SCIP_LPi::spx, SCIP_LPi::task, and SCIP_LPi::xprslp.
Referenced by SCIPlpGetDualfarkas(), and undoBdchgsDualfarkas().
gets the number of LP iterations of the last solve call
- Parameters
-
| lpi | LP interface structure |
| iterations | pointer to store the number of iterations of the last solve call |
Definition at line 2753 of file lpi_clp.cpp.
References SCIP_LPi::clp, errorMessage(), SCIP_LPi::grbmodel, SCIP_LPi::iterations, SCIP_LPi::itercount, SCIP_LPi::lpid, MosekEnv, NULL, SCIP_LPi::previt, SCIP_LPi::prob, QS_CONDRET, SCIP_OKAY, SCIP_PLUGINNOTFOUND, SCIPdebugMessage, SCIP_LPi::solstat, SCIP_LPi::spx, SCIP_LPi::task, and SCIP_LPi::xprslp.
Referenced by conflictAnalyzeLP(), lpiStrongbranch(), lpiStrongbranches(), lpiStrongbranchIntegral(), SCIPconflictAnalyzeStrongbranch(), SCIPlpGetIterations(), and SCIPlpiStrongbranchFrac().
gets information about the quality of an LP solution
Such information is usually only available, if also a (maybe not optimal) solution is available. The LPI should return SCIP_INVALID for quality, if the requested quantity is not available.
gets information about the quality of an LP solution
Such information is usually only available, if also a (maybe not optimal) solution is available. The LPI should return SCIP_INVALID for quality, if the requested quality is not available.
- Parameters
-
| lpi | LP interface structure |
| qualityindicator | indicates which quality should be returned |
| quality | pointer to store quality number |
Definition at line 2771 of file lpi_clp.cpp.
References CHECK_ZERO, SCIP_LPi::cpxenv, SCIP_LPi::cpxlp, SCIP_LPi::grbmodel, SCIP_LPi::messagehdlr, NULL, SCIP_INVALID, SCIP_INVALIDDATA, SCIP_LPSOLQUALITY_ESTIMCONDITION, SCIP_LPSOLQUALITY_EXACTCONDITION, SCIP_OKAY, SCIPdebugMessage, SCIPerrorMessage, and SCIP_LPi::spx.
Referenced by checkAltLPInfeasible(), SCIP_DECL_DISPOUTPUT(), SCIPlpiIsStable(), and SCIPprintLPSolutionQuality().
gets current basis status for columns and rows; arrays must be large enough to store the basis status
- Parameters
-
| lpi | LP interface structure |
| cstat | array to store column basis status, or NULL |
| rstat | array to store row basis status, or NULL |
Definition at line 2798 of file lpi_clp.cpp.
References CHECK_ZERO, SCIP_LPi::clp, convertstat_mosek2scip(), convertstat_mosek2scip_slack(), SCIP_LPi::cpxenv, SCIP_LPi::cpxlp, ensureTabMem(), errorMessage(), getbase(), getRedCostEst(), SCIP_LPi::grbmodel, SCIP_LPi::ibas, SCIP_LPi::lpid, SCIP_LPi::messagehdlr, MOSEK_CALL, MosekEnv, NULL, SCIP_LPi::prob, QS_CONDRET, SCIP_BASESTAT_BASIC, SCIP_BASESTAT_LOWER, SCIP_BASESTAT_UPPER, SCIP_BASESTAT_ZERO, SCIP_CALL, SCIP_INVALIDDATA, SCIP_LPERROR, SCIP_OKAY, SCIP_PLUGINNOTFOUND, SCIP_Real, SCIPABORT, SCIPdebugMessage, SCIPerrorMessage, SCIP_LPi::skc, SCIP_LPi::skx, SCIP_LPi::spx, SCIP_LPi::task, and SCIP_LPi::xprslp.
Referenced by lpLexDualSimplex(), SCIPconflictAnalyzeStrongbranch(), SCIPlpGetBase(), SCIPlpGetSol(), and SCIPlpiGetState().
sets current basis status for columns and rows
Whats changed since last solve. Is only used when startFinishOptions used in dual or primal. Bit 1 - number of rows/columns has not changed (so work arrays valid) 2 - matrix has not changed 4 - if matrix has changed only by adding rows 8 - if matrix has changed only by adding columns 16 - row lbs not changed 32 - row ubs not changed 64 - column objective not changed 128 - column lbs not changed 256 - column ubs not changed 512 - basis not changed (up to user to set this to 0) top bits may be used internally
- Parameters
-
| lpi | LP interface structure |
| cstat | array with column basis status |
| rstat | array with row basis status |
Definition at line 2886 of file lpi_clp.cpp.
References BMSallocMemoryArray, BMSfreeMemoryArray, BMSfreeMemoryArrayNull, CHECK_ZERO, SCIP_LPi::clp, convertstat_scip2mosek(), convertstat_scip2mosek_slack(), SCIP_LPi::cpxenv, SCIP_LPi::cpxlp, ensureStateMem(), ensureTabMem(), EPSEQ, errorMessage(), SCIP_LPi::grbmodel, SCIP_LPi::ibas, invalidateSolution(), SCIP_LPi::lpid, SCIP_LPi::messagehdlr, MOSEK_CALL, MosekEnv, NULL, SCIP_LPi::prob, QS_RETURN, SCIP_ALLOC, SCIP_BASESTAT_BASIC, SCIP_BASESTAT_LOWER, SCIP_BASESTAT_UPPER, SCIP_BASESTAT_ZERO, SCIP_CALL, SCIP_INVALIDDATA, SCIP_LPERROR, SCIP_OKAY, SCIP_PLUGINNOTFOUND, SCIPABORT, SCIPdebugMessage, SCIPerrorMessage, setbase(), SCIP_LPi::skc, SCIP_LPi::skx, SOPLEX_TRY, SCIP_LPi::spx, SCIP_LPi::task, and SCIP_LPi::xprslp.
Referenced by SCIPconflictAnalyzeStrongbranch(), and SCIPlpiSetState().
returns the indices of the basic columns and rows; basic column n gives value n, basic row m gives value -1-m
- Parameters
-
| lpi | LP interface structure |
| bind | pointer to store basis indices ready to keep number of rows entries |
Definition at line 3002 of file lpi_clp.cpp.
References BMSallocMemoryArray, BMSfreeMemoryArray, CHECK_ZERO, SCIP_LPi::clp, SCIP_LPi::cpxenv, SCIP_LPi::cpxlp, SCIP_LPi::cpxparam, errorMessage(), SCIP_LPi::grbmodel, handle_singular(), SCIP_LPi::lpid, SCIP_LPi::messagehdlr, MOSEK_CALL, MosekEnv, NULL, SCIP_LPi::prob, QS_CONDRET, restoreLPData(), SCIP_ALLOC, SCIP_BASESTAT_BASIC, SCIP_BASESTAT_LOWER, SCIP_BASESTAT_UPPER, SCIP_BASESTAT_ZERO, SCIP_CALL, SCIP_CALL_QUIET, SCIP_OKAY, SCIP_PLUGINNOTFOUND, SCIPdebugMessage, setIntParam(), setParameterValues(), SCIP_LPi::spx, SCIP_LPi::task, and SCIP_LPi::xprslp.
Referenced by lpiGetBInvVec(), SCIPlpGetBasisInd(), and SCIPlpiGetBInvRow().
get dense row of inverse basis matrix B^-1
- Parameters
-
| lpi | LP interface structure |
| row | row number |
| coef | pointer to store the coefficients of the row |
Definition at line 3047 of file lpi_clp.cpp.
References BMSallocMemoryArray, BMSclearMemoryArray, BMSfreeMemoryArray, CHECK_ZERO, SCIP_LPi::clp, SCIP_LPi::cpxenv, SCIP_LPi::cpxlp, SCIP_LPi::cpxparam, errorMessage(), SCIP_LPi::factorization, SCIP_LPi::grbmodel, SCIP_LPi::lpid, SCIP_LPi::messagehdlr, MOSEK_CALL, MosekEnv, NULL, SCIP_LPi::prob, QS_RETURN, restoreLPData(), SCIP_ALLOC, SCIP_CALL, SCIP_CALL_QUIET, SCIP_LPERROR, SCIP_OKAY, SCIP_PLUGINNOTFOUND, SCIPdebugMessage, SCIPlpiGetBasisInd(), SCIPmessagePrintWarning(), setIntParam(), setParameterValues(), SCIP_LPi::spx, SCIP_LPi::task, and SCIP_LPi::xprslp.
Referenced by SCIPlpGetBInvRow(), and SCIPlpiGetBInvARow().
get dense column of inverse basis matrix B^-1
- Parameters
-
| lpi | LP interface structure |
| c | column number of B^-1; this is NOT the number of the column in the LP; you have to call SCIPlpiGetBasisInd() to get the array which links the B^-1 column numbers to the row and column numbers of the LP! c must be between 0 and nrows-1, since the basis has the size nrows * nrows |
| coef | pointer to store the coefficients of the column |
Definition at line 3068 of file lpi_clp.cpp.
References BMSallocMemoryArray, BMSfreeMemoryArray, CHECK_ZERO, SCIP_LPi::clp, SCIP_LPi::cpxenv, SCIP_LPi::cpxlp, SCIP_LPi::cpxparam, errorMessage(), SCIP_LPi::grbmodel, SCIP_LPi::lpid, lpiGetBInvVec(), SCIP_LPi::messagehdlr, MOSEK_CALL, MosekEnv, NULL, SCIP_LPi::prob, restoreLPData(), SCIP_ALLOC, SCIP_CALL, SCIP_CALL_QUIET, SCIP_LPERROR, SCIP_OKAY, SCIP_PLUGINNOTFOUND, SCIPdebugMessage, SCIPerrorMessage, setIntParam(), setParameterValues(), SCIP_LPi::spx, SCIP_LPi::task, and SCIP_LPi::xprslp.
Referenced by SCIPlpGetBInvCol().
get dense row of inverse basis matrix times constraint matrix B^-1 * A
- Parameters
-
| lpi | LP interface structure |
| r | row number |
| binvrow_in | row in (A_B)^-1 from prior call to SCIPlpiGetBInvRow(), or NULL |
| val | vector to return coefficients |
Definition at line 3093 of file lpi_clp.cpp.
References BMSallocMemoryArray, BMSfreeMemoryArray, BMSfreeMemoryArrayNull, CHECK_ZERO, SCIP_LPi::clp, SCIP_LPi::cpxenv, SCIP_LPi::cpxlp, SCIP_LPi::cpxparam, ensureTabMem(), ensureValMem(), errorMessage(), SCIP_LPi::grbmodel, SCIP_LPi::indarray, SCIP_LPi::itab, SCIP_LPi::lpid, SCIP_LPi::messagehdlr, MOSEK_CALL, MosekEnv, NULL, SCIP_LPi::prob, QS_CONDRET, restoreLPData(), SCIP_ALLOC, SCIP_CALL, SCIP_CALL_QUIET, SCIP_OKAY, SCIP_PLUGINNOTFOUND, SCIP_Real, SCIPdebugMessage, SCIPlpiGetBInvRow(), setIntParam(), setParameterValues(), SCIP_LPi::spx, SCIP_LPi::task, SCIP_LPi::valarray, and SCIP_LPi::xprslp.
Referenced by SCIPlpGetBInvARow().
get dense column of inverse basis matrix times constraint matrix B^-1 * A
- Parameters
-
| lpi | LP interface structure |
| c | column number |
| coef | vector to return coefficients |
Definition at line 3115 of file lpi_clp.cpp.
References BMSallocMemoryArray, BMSfreeMemoryArray, CHECK_ZERO, SCIP_LPi::clp, SCIP_LPi::cpxenv, SCIP_LPi::cpxlp, SCIP_LPi::cpxparam, ensureValMem(), errorMessage(), SCIP_LPi::grbmodel, SCIP_LPi::indarray, SCIP_LPi::lpid, lpiGetBInvVec(), SCIP_LPi::messagehdlr, MOSEK_CALL, MosekEnv, NULL, SCIP_LPi::prob, restoreLPData(), SCIP_ALLOC, SCIP_CALL, SCIP_CALL_QUIET, SCIP_LPERROR, SCIP_OKAY, SCIP_PLUGINNOTFOUND, SCIP_Real, SCIPdebugMessage, SCIPerrorMessage, setIntParam(), setParameterValues(), SCIP_LPi::spx, SCIP_LPi::task, SCIP_LPi::valarray, and SCIP_LPi::xprslp.
Referenced by SCIPlpGetBInvACol().
stores LPi state (like basis information) into lpistate object
stores LP state (like basis information) into lpistate object
- Parameters
-
| lpi | LP interface structure |
| blkmem | block memory |
| lpistate | pointer to LPi state information (like basis information) |
Definition at line 3148 of file lpi_clp.cpp.
References BMSallocBlockMemory, CHECK_ZERO, checkState(), SCIP_LPi::clearstate, SCIP_LPi::clp, SCIP_LPi::cpxenv, SCIP_LPi::cpxlp, SCIP_LPi::cstat, ensureColMem(), ensureCstatMem(), ensureRowMem(), ensureRstatMem(), errorMessage(), getBase(), getbase(), SCIP_LPi::grbmodel, SCIP_LPi::iccnt, SCIP_LPi::ircnt, SCIP_LPi::lpid, lpistateCreate(), lpistatePack(), SCIP_LPi::messagehdlr, MOSEK_CALL, MosekEnv, NULL, SCIP_LPiState::num, optimizecount, SCIP_LPi::prob, SCIP_LPi::rstat, SCIP_ALLOC, SCIP_Bool, SCIP_CALL, SCIP_OKAY, SCIP_PLUGINNOTFOUND, SCIPdebugMessage, SCIPlpiExistsDualRay(), SCIPlpiGetBase(), SCIP_LPi::solisbasic, SCIP_LPiState::solsta, SCIP_LPi::spx, SCIP_LPi::task, and SCIP_LPi::xprslp.
Referenced by SCIPlpGetState(), and SCIPlpStartDive().
loads LPi state (like basis information) into solver; note that the LP might have been extended with additional columns and rows since the state was stored with SCIPlpiGetState()
- Parameters
-
| lpi | LP interface structure |
| blkmem | block memory |
| lpistate | LPi state information (like basis information) |
Definition at line 3188 of file lpi_clp.cpp.
References CHECK_ZERO, SCIP_LPi::clp, SCIP_LPi::cpxenv, SCIP_LPi::cpxlp, SCIP_LPi::cstat, ensureColMem(), ensureCstatMem(), ensureRowMem(), ensureRstatMem(), ensureStateMem(), ensureTabMem(), errorMessage(), getbase(), SCIP_LPi::grbmodel, SCIP_LPi::ibas, SCIP_LPi::iccnt, SCIP_LPi::ircnt, lpistateUnpack(), SCIP_LPi::messagehdlr, MOSEK_CALL, MosekEnv, SCIP_LPiState::ncols, SCIP_LPiState::nrows, NULL, SCIP_LPiState::num, SCIP_LPiState::packcstat, SCIP_LPiState::packrstat, SCIP_LPi::prob, QS_RETURN, REALABS, SCIP_LPi::rstat, SCIP_BASESTAT_BASIC, SCIP_BASESTAT_LOWER, SCIP_BASESTAT_UPPER, SCIP_BASESTAT_ZERO, SCIP_CALL, SCIP_INVALIDDATA, SCIP_OKAY, SCIP_PLUGINNOTFOUND, SCIP_Real, SCIPABORT, SCIPdebugMessage, SCIPerrorMessage, SCIPlpiIsInfinity(), SCIPlpiSetBase(), setBase(), setbase(), SCIP_LPi::skc, SCIP_LPi::skx, SCIP_LPiState::solsta, SCIP_LPi::spx, SCIP_LPi::task, and SCIP_LPi::xprslp.
Referenced by SCIPlpSetState().
clears current LPi state (like basis information) of the solver
- Parameters
-
| lpi | LP interface structure |
Definition at line 3242 of file lpi_clp.cpp.
References CHECK_ZERO, SCIP_LPi::clearstate, SCIP_LPi::clp, SCIP_LPi::grbmodel, SCIP_LPi::messagehdlr, NULL, SCIP_LPERROR, SCIP_OKAY, SCIPdebugMessage, SCIPerrorMessage, SCIPmessagePrintWarning(), SCIP_LPi::spx, TRUE, and SCIP_LPi::validFactorization.
Referenced by SCIPtreeEndProbing().
checks, whether the given LPi state contains simplex basis information
checks, whether the given LP state contains simplex basis information
- Parameters
-
| lpi | LP interface structure |
| lpistate | LP state information (like basis information) |
Definition at line 3276 of file lpi_clp.cpp.
References errorMessageAbort(), FALSE, SCIP_LPi::lpid, MosekEnv, NULL, SCIP_LPiState::num, SCIPdebugMessage, SCIP_LPi::task, and TRUE.
Referenced by SCIPlpSetState().
reads LPi state (like basis information from a file
reads LP state (like basis information) from a file
reads LP state (like basis information from a file
Read a basis from the given filename, returns -1 on file error, 0 if no values, 1 if values
- Parameters
-
| lpi | LP interface structure |
| fname | file name |
Definition at line 3285 of file lpi_clp.cpp.
References CHECK_ZERO, SCIP_LPi::clp, SCIP_LPi::cpxenv, SCIP_LPi::cpxlp, errorMessage(), SCIP_LPi::grbmodel, SCIP_LPi::messagehdlr, MOSEK_CALL, MosekEnv, NULL, SCIP_LPi::prob, SCIP_LPERROR, SCIP_OKAY, SCIP_PLUGINNOTFOUND, SCIP_READERROR, SCIPdebugMessage, SCIPerrorMessage, SOPLEX_TRY, SCIP_LPi::spx, SCIP_LPi::task, and SCIP_LPi::xprslp.
writes LPi state (like basis information) to a file
writes LP state (like basis information) to a file
Write the basis in MPS format to the specified file. If writeValues true, writes values of structurals (and adds VALUES to end of NAME card)
parameters:
- filename
- bool writeValues
- int formatType (0 - normal, 1 - extra accuracy, 2 - IEEE hex)
- Parameters
-
| lpi | LP interface structure |
| fname | file name |
Definition at line 3302 of file lpi_clp.cpp.
References CHECK_ZERO, SCIP_LPi::clp, SCIP_LPi::cpxenv, SCIP_LPi::cpxlp, errorMessage(), SCIP_LPi::grbmodel, SCIP_LPi::messagehdlr, MOSEK_CALL, MosekEnv, NULL, SCIP_LPi::prob, QS_ERROR, SCIP_LPERROR, SCIP_MAXSTRLEN, SCIP_OKAY, SCIP_PLUGINNOTFOUND, SCIP_WRITEERROR, SCIPdebugMessage, SCIPerrorMessage, SOPLEX_TRY, SCIP_LPi::spx, SCIP_LPi::task, and SCIP_LPi::xprslp.
Referenced by SCIPlpiSolveDual(), and SCIPlpiSolvePrimal().
stores LPi pricing norms into lpinorms object
stores LPi pricing norms information
stores LPi pricing norms information
stores LPi pricing norms information
stores LPi pricing norms information
stores LPi pricing norms information
stores LPi pricing norms information
stores LPi pricing norms information
stores LPi pricing norms information
stores LPi pricing norms information
- Parameters
-
| lpi | LP interface structure |
| blkmem | block memory |
| lpinorms | pointer to LPi pricing norms information |
Definition at line 3339 of file lpi_clp.cpp.
References BMSallocBlockMemory, BMSallocBlockMemoryArray, BMSfreeBlockMemory, BMSfreeBlockMemoryArray, CHECK_ZERO, SCIP_LPi::clearstate, SCIP_LPi::cpxenv, SCIP_LPi::cpxlp, errorMessage(), SCIP_LPi::messagehdlr, NULL, SCIP_ALLOC, SCIP_OKAY, SCIP_PLUGINNOTFOUND, SCIPdebugMessage, and SCIP_LPi::solisbasic.
Referenced by SCIPlpGetNorms().
loads LPi pricing norms into solver; note that the LP might have been extended with additional columns and rows since the norms were stored with SCIPlpiGetNorms()
loads LPi pricing norms into solver; note that the LP might have been extended with additional columns and rows since the state was stored with SCIPlpiGetNorms()
- Parameters
-
| lpi | LP interface structure |
| blkmem | block memory |
| lpinorms | LPi pricing norms information |
Definition at line 3355 of file lpi_clp.cpp.
References CHECK_ZERO, SCIP_LPi::cpxenv, SCIP_LPi::cpxlp, errorMessage(), SCIP_LPiNorms::head, SCIP_LPi::messagehdlr, SCIP_LPiNorms::norm, SCIP_LPiNorms::normlen, NULL, SCIP_OKAY, SCIP_PLUGINNOTFOUND, and SCIPdebugMessage.
Referenced by SCIPlpSetNorms().
gets integer parameter of LP
- Parameters
-
| lpi | LP interface structure |
| type | parameter number |
| ival | buffer to store the parameter value |
Definition at line 3393 of file lpi_clp.cpp.
References CHECK_ZERO, SCIP_LPi::clp, CPX_INT_MAX, SCIP_LPi::cpxlp, FALSE, SCIP_LPi::fastmip, SCIP_LPi::fromscratch, getDblParam(), getIntParam(), SCIP_LPi::grbmodel, MOSEK_CALL, MosekEnv, NULL, SCIP_LPi::par_fastlp, SCIP_LPi::par_presolve, paramty2str(), SCIP_LPi::pricing, SCIP_LPi::prob, QS_RETURN, SCIP_LPi::rngfound, SCIP_CALL, SCIP_LPPAR_FASTMIP, SCIP_LPPAR_FROMSCRATCH, SCIP_LPPAR_LPINFO, SCIP_LPPAR_LPITLIM, SCIP_LPPAR_PRESOLVING, SCIP_LPPAR_PRICING, SCIP_LPPAR_SCALING, SCIP_LPPAR_THREADS, SCIP_OKAY, SCIP_PARAMETERUNKNOWN, SCIP_PRICING_AUTO, SCIP_PRICING_DEVEX, SCIP_PRICING_FULL, SCIP_PRICING_PARTIAL, SCIP_PRICING_STEEP, SCIP_PRICING_STEEPQSTART, SCIP_Real, SCIPdebugMessage, SCIP_LPi::spx, SCIP_LPi::startscratch, SCIP_LPi::task, TRUE, and SCIP_LPi::xprslp.
Referenced by lpCheckIntpar(), and SCIPlpStartDive().
sets integer parameter of LP
Amount of print out: 0 - none 1 - just final 2 - just factorizations 3 - as 2 plus a bit more 4 - verbose above that 8,16,32 etc just for selective SCIPdebug
- Parameters
-
| lpi | LP interface structure |
| type | parameter number |
| ival | parameter value |
Definition at line 3437 of file lpi_clp.cpp.
References CHECK_ZERO, SCIP_LPi::clp, CPX_INT_MAX, SCIP_LPi::cpxlp, FALSE, SCIP_LPi::fromscratch, SCIP_LPi::grbmodel, SCIP_LPi::lpid, MIN, MOSEK_CALL, MosekEnv, NULL, SCIP_LPi::par_fastlp, SCIP_LPi::par_presolve, paramty2str(), SCIP_LPi::pricing, SCIP_LPi::prob, QS_RETURN, SCIP_LPi::rngfound, SCIP_Bool, SCIP_CALL, SCIP_INVALIDDATA, SCIP_LPERROR, SCIP_LPPAR_FASTMIP, SCIP_LPPAR_FROMSCRATCH, SCIP_LPPAR_LPINFO, SCIP_LPPAR_LPITLIM, SCIP_LPPAR_PRESOLVING, SCIP_LPPAR_PRICING, SCIP_LPPAR_SCALING, SCIP_LPPAR_THREADS, SCIP_OKAY, SCIP_PARAMETERUNKNOWN, SCIP_PRICING_AUTO, SCIP_PRICING_DEVEX, SCIP_PRICING_FULL, SCIP_PRICING_LPIDEFAULT, SCIP_PRICING_PARTIAL, SCIP_PRICING_STEEP, SCIP_PRICING_STEEPQSTART, SCIPABORT, SCIPdebugMessage, SCIPerrorMessage, setDblParam(), setFastmipClpParameters(), setIntParam(), SCIP_LPi::spx, SCIP_LPi::startscratch, SCIP_LPi::task, TRUE, unsetFastmipClpParameters(), and SCIP_LPi::xprslp.
Referenced by addConcaveEstimatorMultivariate(), checkAltLPInfeasible(), conflictAnalyzeLP(), extendToCover(), initAlternativeLP(), lpSetIntpar(), SCIP_DECL_CONSCHECK(), SCIPlpComputeRelIntPoint(), SCIPlpiAddRows(), and SCIPlpiCreate().
gets floating point parameter of LP
- Parameters
-
| lpi | LP interface structure |
| type | parameter number |
| dval | buffer to store the parameter value |
Definition at line 3539 of file lpi_clp.cpp.
References CHECK_ZERO, SCIP_LPi::clp, SCIP_LPi::conditionlimit, SCIP_LPi::cpxlp, getDblParam(), SCIP_LPi::grbmodel, SCIP_LPi::messagehdlr, MOSEK_CALL, MosekEnv, NULL, SCIP_LPi::par_lobjlim, SCIP_LPi::par_uobjlim, paramty2str(), SCIP_LPi::prob, QS_RETURN, SCIP_LPi::rowrepswitch, SCIP_CALL, SCIP_LPPAR_BARRIERCONVTOL, SCIP_LPPAR_CONDITIONLIMIT, SCIP_LPPAR_DUALFEASTOL, SCIP_LPPAR_FEASTOL, SCIP_LPPAR_LOBJLIM, SCIP_LPPAR_LPTILIM, SCIP_LPPAR_MARKOWITZ, SCIP_LPPAR_ROWREPSWITCH, SCIP_LPPAR_UOBJLIM, SCIP_OKAY, SCIP_PARAMETERUNKNOWN, SCIPdebugMessage, SCIP_LPi::spx, SCIP_LPi::task, and SCIP_LPi::xprslp.
Referenced by conflictAnalyzeLP(), and lpCheckRealpar().
sets floating point parameter of LP
- Parameters
-
| lpi | LP interface structure |
| type | parameter number |
| dval | parameter value |
Definition at line 3585 of file lpi_clp.cpp.
References CHECK_ZERO, SCIP_LPi::checkcondition, SCIP_LPi::clp, SCIP_LPi::conditionlimit, SCIP_LPi::cpxlp, SCIP_LPi::feastol, SCIP_LPi::grbmodel, SCIP_LPi::messagehdlr, MOSEK_CALL, MosekEnv, NULL, SCIP_LPi::par_lobjlim, SCIP_LPi::par_uobjlim, paramty2str(), SCIP_LPi::prob, QS_RETURN, SCIP_LPi::rowrepswitch, SCIP_CALL, SCIP_LPPAR_BARRIERCONVTOL, SCIP_LPPAR_CONDITIONLIMIT, SCIP_LPPAR_DUALFEASTOL, SCIP_LPPAR_FEASTOL, SCIP_LPPAR_LOBJLIM, SCIP_LPPAR_LPTILIM, SCIP_LPPAR_MARKOWITZ, SCIP_LPPAR_ROWREPSWITCH, SCIP_LPPAR_UOBJLIM, SCIP_OKAY, SCIP_PARAMETERUNKNOWN, SCIPdebugMessage, setDblParam(), SCIP_LPi::spx, SCIP_LPi::task, and SCIP_LPi::xprslp.
Referenced by addConcaveEstimatorMultivariate(), conflictAnalyzeLP(), lpSetRealpar(), and SCIPlpComputeRelIntPoint().
returns value treated as infinity in the LP solver
- Parameters
-
| lpi | LP interface structure |
Definition at line 3642 of file lpi_clp.cpp.
References LPIINFINITY, MosekEnv, NULL, SCIPdebugMessage, SCIP_LPi::spx, and SCIP_LPi::task.
Referenced by addAltLPConstraint(), addAltLPRow(), addConcaveEstimatorMultivariate(), conflictAnalyzeLP(), lpFlushAddCols(), lpFlushAddRows(), lpFlushChgCols(), lpFlushChgRows(), lpSetUobjlim(), SCIPlpComputeRelIntPoint(), SCIPlpCreate(), SCIPlpiCreate(), SCIPlpiGetObjval(), SCIPlpMarkFlushed(), SCIPlpSolveAndEval(), solveNodeLP(), unfixAltLPVariable(), unfixAltLPVariables(), and updateLazyBounds().
checks if given value is treated as infinity in the LP solver
- Parameters
-
| lpi | LP interface structure |
| val | value to be checked for infinity |
Definition at line 3653 of file lpi_clp.cpp.
References FALSE, IS_POSINF, LPIINFINITY, MosekEnv, NULL, SCIPdebugMessage, SCIP_LPi::spx, SCIP_LPi::task, and TRUE.
Referenced by checkLPBoundsClean(), performStrongbranchWithPropagation(), and SCIPlpiSetState().
reads LP from a file
read file in MPS format parameters: filename bool keepNames bool ignoreErrors
- Parameters
-
| lpi | LP interface structure |
| fname | file name |
Definition at line 3693 of file lpi_clp.cpp.
References CHECK_ZERO, SCIP_LPi::clp, SCIP_LPi::cpxenv, SCIP_LPi::cpxlp, errorMessage(), fileExists(), SCIP_LPi::grbmodel, SCIP_LPi::lpid, SCIP_LPi::messagehdlr, MOSEK_CALL, MosekEnv, NULL, SCIP_LPi::previt, SCIP_LPi::prob, SCIP_NOFILE, SCIP_OKAY, SCIP_PLUGINNOTFOUND, SCIP_READERROR, SCIPdebugMessage, SCIPerrorMessage, SCIPmessagePrintWarning(), SCIP_LPi::solstat, SCIP_LPi::spx, SCIP_LPi::task, and SCIP_LPi::xprslp.
writes LP to a file
write file in MPS format parameters: filename int formatType (0 - normal, 1 - extra accuracy, 2 - IEEE hex) int numberAcross (1 or 2 values should be specified on every data line in the MPS file) double objSense
- Parameters
-
| lpi | LP interface structure |
| fname | file name |
Definition at line 3721 of file lpi_clp.cpp.
References CHECK_ZERO, SCIP_LPi::clp, SCIP_LPi::cpxenv, SCIP_LPi::cpxlp, errorMessage(), SCIP_LPi::grbmodel, SCIP_LPi::lpid, SCIP_LPi::messagehdlr, MOSEK_CALL, MosekEnv, NULL, SCIP_LPi::prob, SCIP_OKAY, SCIP_PLUGINNOTFOUND, SCIP_READERROR, SCIP_WRITEERROR, SCIPdebugMessage, SCIPerrorMessage, SCIPmessagePrintWarning(), SCIP_LPi::spx, SCIP_LPi::task, and SCIP_LPi::xprslp.
Referenced by addAltLPConstraint(), addAltLPRow(), SCIPlpComputeRelIntPoint(), SCIPlpiSolveDual(), SCIPlpiSolvePrimal(), and SCIPlpWrite().
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