7 #ifndef OsiClpSolverInterface_H
8 #define OsiClpSolverInterface_H
25 class OsiClpUserSolver;
136 const double * c)
const ;
139 virtual void getBInvARow(
int row,
double* z,
double * slack=NULL)
const;
146 bool keepScaled=
false)
const;
149 virtual void getBInvRow(
int row,
double* z)
const;
152 virtual void getBInvACol(
int col,
double* vec)
const ;
164 virtual void getBInvCol(
int col,
double* vec)
const ;
170 virtual void getBasics(
int* index)
const;
194 virtual int pivot(
int colIn,
int colOut,
int outStatus);
208 int& colOut,
int& outStatus,
218 int colOut,
int outStatus,
254 void * otherInformation=NULL);
341 void setStuff(
double tolerance,
double increment);
344 int numberRowsAtContinuous,
const int * whichGenerator,
350 int numberRowsAtContinuous,
const int * whichGenerator,
387 unsigned maxLen = static_cast<unsigned>(std::string::npos))
const;
392 unsigned maxLen = static_cast<unsigned>(std::string::npos))
const;
453 virtual bool isBinary(
int colIndex)
const;
459 virtual bool isInteger(
int colIndex)
const;
471 virtual const char *
getColType(
bool refresh=
false)
const;
535 virtual std::vector<double*>
getDualRays(
int maxNumRays,
536 bool fullRay =
false)
const;
548 virtual std::vector<double*>
getPrimalRays(
int maxNumRays)
const;
561 virtual void setObjCoeff(
int elementIndex,
double elementValue );
565 virtual void setColLower(
int elementIndex,
double elementValue );
569 virtual void setColUpper(
int elementIndex,
double elementValue );
573 double lower,
double upper );
584 const int* indexLast,
585 const double* boundList);
589 virtual void setRowLower(
int elementIndex,
double elementValue );
593 virtual void setRowUpper(
int elementIndex,
double elementValue ) ;
597 double lower,
double upper ) ;
600 virtual void setRowType(
int index,
char sense,
double rightHandSide,
612 const int* indexLast,
613 const double* boundList);
626 const int* indexLast,
627 const char* senseList,
628 const double* rhsList,
629 const double* rangeList);
651 virtual void setRowName(
int rowIndex, std::string name) ;
656 virtual void setColName(
int colIndex, std::string name) ;
672 virtual void setInteger(
const int* indices,
int len);
729 const double collb,
const double colub,
734 const double collb,
const double colub,
735 const double obj, std::string name) ;
737 virtual void addCol(
int numberElements,
const int * rows,
const double * elements,
738 const double collb,
const double colub,
742 virtual void addCol(
int numberElements,
743 const int* rows,
const double* elements,
744 const double collb,
const double colub,
745 const double obj, std::string name) ;
747 virtual void addCols(
const int numcols,
749 const double* collb,
const double* colub,
752 virtual void addCols(
const int numcols,
753 const int * columnStarts,
const int * rows,
const double * elements,
754 const double* collb,
const double* colub,
757 virtual void deleteCols(
const int num,
const int * colIndices);
761 const double rowlb,
const double rowub);
769 const double rowlb,
const double rowub,
772 const char rowsen,
const double rowrhs,
773 const double rowrng);
775 virtual void addRow(
int numberElements,
const int * columns,
const double * element,
776 const double rowlb,
const double rowub) ;
780 const char rowsen,
const double rowrhs,
781 const double rowrng, std::string name) ;
783 virtual void addRows(
const int numrows,
785 const double* rowlb,
const double* rowub);
787 virtual void addRows(
const int numrows,
789 const char* rowsen,
const double* rowrhs,
790 const double* rowrng);
793 virtual void addRows(
const int numrows,
794 const int * rowStarts,
const int * columns,
const double * element,
795 const double* rowlb,
const double* rowub);
802 virtual void deleteRows(
const int num,
const int * rowIndices);
844 double effectivenessLb = 0.0);
867 const double* collb,
const double* colub,
869 const double* rowlb,
const double* rowub);
879 double*& collb,
double*& colub,
double*& obj,
880 double*& rowlb,
double*& rowub);
895 const double* collb,
const double* colub,
897 const char* rowsen,
const double* rowrhs,
898 const double* rowrng);
908 double*& collb,
double*& colub,
double*& obj,
909 char*& rowsen,
double*& rowrhs,
915 const double* collb,
const double* colub,
917 const double* rowlb,
const double* rowub) ;
921 virtual void loadProblem(
const int numcols,
const int numrows,
924 const double* collb,
const double* colub,
926 const double* rowlb,
const double* rowub);
930 virtual void loadProblem(
const int numcols,
const int numrows,
933 const double* collb,
const double* colub,
935 const char* rowsen,
const double* rowrhs,
936 const double* rowrng);
943 virtual int readMps(
const char *filename,
944 const char *extension =
"mps") ;
947 int readMps(
const char *filename,
bool keepNames,
bool allowErrors);
949 virtual int readMps (
const char *filename,
const char*extension,
950 int & numberSets,
CoinSet ** & sets);
956 virtual void writeMps(
const char *filename,
957 const char *extension =
"mps",
958 double objSense=0.0)
const;
968 const char ** rowNames,
const char ** columnNames,
969 int formatType=0,
int numberAcross=2,
970 double objSense=0.0)
const ;
972 virtual int readLp(
const char *filename,
const double epsilon = 1e-5);
978 virtual void writeLp(
const char *filename,
979 const char *extension =
"lp",
980 double epsilon = 1e-5,
981 int numberAcross = 10,
983 double objSense = 0.0,
984 bool useRowNames =
true)
const;
990 double epsilon = 1e-5,
991 int numberAcross = 10,
993 double objSense = 0.0,
994 bool useRowNames =
true)
const;
1166 virtual void reset();
1225 const int * indices,
const double * elements);
1249 const int * start,
const int * indices,
const double * weights=NULL);
1428 virtual bool check()
const ;
int cleanupScaling() const
Get scaling action option.
virtual void saveBaseModel()
If solver wants it can save a copy of "base" (continuous) model here.
void setOsiModel(OsiClpSolverInterface *model)
set model.
virtual const char * getColType(bool refresh=false) const
Return array of column length 0 - continuous 1 - binary (may get fixed later) 2 - general integer (ma...
virtual void setRowUpper(int elementIndex, double elementValue)
Set a single row upper bound Use DBL_MAX for infinity.
virtual void setRowPrice(const double *rowprice)
Set dual solution vector.
virtual void getReducedGradient(double *columnReducedCosts, double *duals, const double *c) const
Get the reduced gradient for the cost vector c.
int lastNumberRows_
Number of rows when last "scaled".
void modifyCoefficient(int row, int column, double newElement, bool keepZero=false)
Add a named column (primal variable) to the problem.
virtual void disableFactorization() const
Undo any setting changes made by enableFactorization.
virtual void setObjective(const double *array)
Set the objective coefficients for all columns array [getNumCols()] is an array of values for the obj...
void redoScaleFactors(int numberRows, const CoinBigIndex *starts, const int *indices, const double *elements)
Extend scale factors.
virtual CoinBigIndex getSizeU() const
Return number of entries in U part of current factorization.
void newLanguage(CoinMessages::Language language)
Set language.
void setLogLevel(int value)
Set log level (will also set underlying solver's log level)
This is a simple minded model which is stored in a format which makes it easier to construct and modi...
virtual const double * getRowActivity() const
Get pointer to array[getNumRows()] of row activity levels (constraint matrix times the solution vecto...
virtual void loadProblem(const CoinPackedMatrix &matrix, const double *collb, const double *colub, const double *obj, const double *rowlb, const double *rowub)
Load in an problem by copying the arguments (the constraints on the rows are given by lower and upper...
virtual void applyColCut(const OsiColCut &cc)
Apply a column cut (adjust one or more bounds).
void lexSolve()
Sort of lexicographic resolve.
virtual int getNumCols() const
Get number of columns.
This is a very simple class to guide algorithms.
int numberIterations() const
Number of iterations.
Base class for message handling.
virtual bool setHintParam(OsiHintParam key, bool yesNo=true, OsiHintStrength strength=OsiHintTry, void *otherInformation=NULL)
Set a hint parameter.
void setLargestAway(double value)
Set largest amount continuous away from bound.
This is a tiny class where data can be saved round calls.
virtual void setColSetBounds(const int *indexFirst, const int *indexLast, const double *boundList)
Set the bounds on a number of columns simultaneously The default implementation just invokes setColL...
const double * downRange() const
Sets up working basis as a copy of input and puts in as basis.
int numberSOS_
Number of SOS sets.
virtual int tightenBounds(int lightweight=0)
Tighten bounds - lightweight or very lightweight 0 - normal, 1 lightweight but just integers...
double * rowActivity_
also save row and column information for hot starts only used in hotstarts so can be casual ...
virtual std::string getRowName(int rowIndex, unsigned maxLen=static_cast< unsigned >(std::string::npos)) const
Return name of row if one exists or Rnnnnnnn maxLen is currently ignored and only there to match the ...
double * rowUpper() const
Row upper.
double * columnActivity_
Pointer to dense vector of row sense indicators.
virtual const double * getReducedCost() const
Get a pointer to array[getNumCols()] of reduced costs.
virtual void assignProblem(CoinPackedMatrix *&matrix, double *&collb, double *&colub, double *&obj, double *&rowlb, double *&rowub)
Load in an problem by assuming ownership of the arguments (the constraints on the rows are given by l...
virtual void addRows(const int numrows, const CoinPackedVectorBase *const *rows, const double *rowlb, const double *rowub)
Add a named column (primal variable) to the problem.
ClpLinearObjective * fakeObjective_
Fake objective.
virtual bool setWarmStart(const CoinWarmStart *warmstart)
Set warmstarting information.
void releaseClp()
Releases so won't error.
void setSOSData(int numberSOS, const char *type, const int *start, const int *indices, const double *weights=NULL)
Pass in sos stuff from AMPl.
void setSmallestElementInCut(double value)
Set smallest allowed element in cut.
virtual void getBInvARow(int row, double *z, double *slack=NULL) const
Get a row of the tableau (slack part in slack if not NULL)
virtual void enableFactorization() const
Enables simplex mode 1 (tableau access)
virtual void passInMessageHandler(CoinMessageHandler *handler)
Pass in a message handler.
CoinPackedMatrix * matrix() const
Matrix (if not ClpPackedmatrix be careful about memory leak.
Abstract base class for warm start `diff' objects.
void freeCachedResults() const
Deletes all mutable stuff.
void setSpecialOptions(unsigned int value)
Get pointer to Clp model.
int lastAlgorithm() const
Last algorithm used , 1 = primal, 2 = dual other unknown.
virtual const double * getColLower() const
Get pointer to array[getNumCols()] of column lower bounds.
bool notOwned_
To say if destructor should delete underlying model.
CoinPackedMatrix * matrixByRowAtContinuous_
Pointer to row-wise copy of continuous problem matrix coefficients.
ClpSimplex * continuousModel_
Continuous model.
virtual bool isPrimalObjectiveLimitReached() const
Is the given primal objective limit reached?
virtual void setObjSense(double s)
Set objective function sense (1 for min (default), -1 for max,)
double optimizationDirection() const
Direction of optimization (1 - minimize, -1 - maximize, 0 - ignore.
ClpFactorization * factorization_
factorization for hot starts
virtual void solveFromHotStart()
Optimize starting from the hotstart.
static const double OsiClpInfinity
void setLastAlgorithm(int value)
Set last algorithm used , 1 = primal, 2 = dual other unknown.
OsiClpDisasterHandler * disasterHandler_
Possible disaster handler.
virtual void setRowLower(int elementIndex, double elementValue)
Set a single row lower bound Use -DBL_MAX for -infinity.
int numberRows() const
Number of rows.
virtual int loadFromCoinModel(CoinModel &modelObject, bool keepSolution=false)
This loads a model from a coinModel object - returns number of errors.
virtual double getObjValue() const
Get objective function value.
bool inTrouble_
Are we in trouble.
double smallestChangeInCut() const
Get smallest change in cut.
virtual void setRowSetTypes(const int *indexFirst, const int *indexLast, const char *senseList, const double *rhsList, const double *rangeList)
Set the type of a number of rows simultaneously The default implementation just invokes setRowType()...
virtual void markHotStart()
Create a hotstart point of the optimization process.
void stopFastDual()
Stop fast dual.
OsiClpSolverInterface & operator=(const OsiClpSolverInterface &rhs)
Assignment operator.
ClpSimplex * modelPtr_
Clp model represented by this class instance.
void fillParamMaps()
Sets up working basis as a copy of input and puts in as basis.
virtual CoinWarmStart * getEmptyWarmStart() const
Get an empty warm start object.
virtual bool check() const
Checks if disaster.
Sparse Matrix Base Class.
virtual bool isFreeBinary(int colIndex) const
Return true if variable is binary and not fixed at either bound.
virtual void resolve()
Resolve an LP relaxation after problem modification.
void setFakeObjective(ClpLinearObjective *fakeObjective)
Set fake objective (and take ownership)
virtual int getIterationCount() const
Get how many iterations it took to solve the problem (whatever "iteration" mean to the solver...
void setPhase(int value)
Set phase.
virtual void setColSolution(const double *colsol)
Set the primal solution column values.
virtual void setRowBounds(int elementIndex, double lower, double upper)
Set a single row lower and upper bound.
int * whichRange_
Pointer to variables for which we want range information The number is in [0] memory is not owned by ...
virtual void disableSimplexInterface()
Undo setting changes made by enableSimplexInterface.
virtual void setRowName(int rowIndex, std::string name)
Set name of row.
CoinSet * setInfo_
SOS set info.
virtual CoinWarmStart * getWarmStart() const
Get warmstarting information.
void setWhereFrom(int value)
Set where from.
virtual int getNumElements() const
Get number of nonzero elements.
virtual int getNumRows() const
Get number of rows.
Collections of row cuts and column cuts.
double smallestElementInCut_
Smallest allowed element in cut.
const double * upRange() const
If doing fast hot start then ranges are computed.
virtual int readMps(const char *filename, const char *extension="mps")
Read a problem in MPS format from the given filename.
virtual bool isIterationLimitReached() const
Iteration limit reached?
virtual const CoinPackedMatrix * getMatrixByCol() const
Get pointer to column-wise copy of matrix.
virtual void enableSimplexInterface(bool doingPrimal)
Enables simplex mode 2 (individual pivot control)
virtual bool isProvenPrimalInfeasible() const
Is primal infeasiblity proven?
virtual void initialSolve()
Solve initial LP relaxation.
ClpDataSave saveData_
To save data in OsiSimplex stuff.
virtual int findIntegersAndSOS(bool justCount)
Identify integer variables and SOS and create corresponding objects.
int lastAlgorithm_
Last algorithm used.
virtual void setColLower(int elementIndex, double elementValue)
Set a single column lower bound Use -DBL_MAX for -infinity.
Abstract base class for various sparse vectors.
ClpSimplex * getModelPtr() const
Get pointer to Clp model.
int whereFrom_
Where from 0 dual (resolve) 1 crunch 2 primal (resolve) 4 dual (initialSolve) 6 primal (initialSolve)...
virtual void deleteRows(const int num, const int *rowIndices)
Add a named column (primal variable) to the problem.
virtual bool isContinuous(int colNumber) const
Return true if column is continuous.
const OsiClpDisasterHandler * disasterHandler() const
Get disaster handler.
void crunch()
Crunch down problem a bit.
unsigned int specialOptions_
Special options 0x80000000 off 0 simple stuff for branch and bound 1 try and keep work regions as muc...
virtual void synchronizeModel()
Synchronize model (really if no cuts in tree)
virtual void deleteCols(const int num, const int *colIndices)
Add a named column (primal variable) to the problem.
virtual ~OsiClpSolverInterface()
Destructor.
void gutsOfDestructor()
The real work of a copy constructor (used by copy and assignment)
void copyEnabledSuff(OsiClpSolverInterface &rhs)
Copy across enabled stuff from one solver to another.
virtual ClpDisasterHandler * clone() const
Clone.
virtual void intoSimplex()
Into simplex.
int cleanupScaling_
Scaling option When scaling is on it is possible that the scaled problem is feasible but the unscaled...
double * rhs_
Pointer to dense vector of row right-hand side values.
virtual void setContinuous(int index)
Set the index-th variable to be a continuous variable.
virtual void setInteger(int index)
Set the index-th variable to be an integer variable.
void passInDisasterHandler(OsiClpDisasterHandler *handler)
Pass in disaster handler.
virtual void getBInvACol(int col, double *vec) const
Get a column of the tableau.
Status
enums for status of various sorts.
ClpLinearObjective * fakeObjective() const
Get fake objective.
virtual void setColUpper(int elementIndex, double elementValue)
Set a single column upper bound Use DBL_MAX for infinity.
double largestAway() const
Get largest amount continuous away from bound.
CoinWarmStartDiff * getBasisDiff(const unsigned char *statusArray) const
Warm start difference from basis_ to statusArray.
virtual bool isIntegerNonBinary(int colIndex) const
Return true if variable is general integer.
void setSolveOptions(const ClpSolve &options)
Pass in initial solve options.
double * rowLower() const
Row lower.
virtual void restoreBaseModel(int numberRows)
Strip off rows to get to this number of rows.
CoinDoubleArrayWithLength rowScale_
Row scale factors (has inverse at end)
void setSpecialOptionsMutable(unsigned int value) const
Set special options in underlying clp solver.
int numberColumns() const
Number of rows.
CoinWarmStartBasis * getPointerToWarmStart()
Get warmstarting information.
OsiClpSolverInterface()
Default Constructor.
CoinWarmStartBasis getBasis(ClpSimplex *model) const
Warm start.
Very simple class for containing data on set.
virtual const double * getRowLower() const
Get pointer to array[getNumRows()] of row lower bounds.
void computeLargestAway()
Compute largest amount any at continuous away from bound.
double * rowrange_
Pointer to dense vector of slack upper bounds for range constraints (undefined for non-range rows) ...
Base class for Clp disaster handling.
virtual void setObjCoeff(int elementIndex, double elementValue)
Set an objective function coefficient.
bool getStrParam(OsiStrParam key, std::string &value) const
Get a string parameter.
char * integerInformation_
Pointer to integer information.
void crossover(int options, int basis)
Solve when primal column and dual row solutions are near-optimal options - 0 no presolve (use primal ...
virtual int writeMpsNative(const char *filename, const char **rowNames, const char **columnNames, int formatType=0, int numberAcross=2, double objSense=0.0) const
Write the problem into an mps file of the given filename, names may be null.
void setColumnStatus(int iColumn, ClpSimplex::Status status)
Set column status in ClpSimplex and warmStart.
bool setStrParam(OsiStrParam key, const std::string &value)
Set a string parameter.
virtual int dualPivotResult(int &colIn, int &sign, int colOut, int outStatus, double &t, CoinPackedVector *dx)
Obtain a result of the dual pivot (similar to the previous method) Differences: entering variable and...
virtual ApplyCutsReturnCode applyCuts(const OsiCuts &cs, double effectivenessLb=0.0)
Apply a collection of cuts.
virtual void getBInvRow(int row, double *z) const
Get a row of the basis inverse.
virtual const char * getRowSense() const
Get pointer to array[getNumRows()] of row constraint senses.
void setLanguage(CoinMessages::Language language)
Pass in a message handler.
virtual void writeLp(const char *filename, const char *extension="lp", double epsilon=1e-5, int numberAcross=10, int decimals=5, double objSense=0.0, bool useRowNames=true) const
Write the problem into an Lp file of the given filename.
void freeCachedResults0() const
Deletes all mutable stuff for row ranges etc.
int startFastDual(int options)
Start faster dual - returns negative if problems 1 if infeasible, Options to pass to solver 1 - creat...
int infeasibleOtherWay(char *whichWay)
See if any integer variables make infeasible other way.
bool setDblParam(OsiDblParam key, double value)
Set a double parameter.
virtual void getBInvCol(int col, double *vec) const
Get a column of the basis inverse.
OsiClpSolverInterface * osiModel() const
Get model.
virtual void addCols(const int numcols, const CoinPackedVectorBase *const *cols, const double *collb, const double *colub, const double *obj)
Add a named column (primal variable) to the problem.
virtual std::vector< double * > getDualRays(int maxNumRays, bool fullRay=false) const
Get as many dual rays as the solver can provide.
virtual bool isAbandoned() const
Are there a numerical difficulties?
virtual void applyRowCut(const OsiRowCut &rc)
Apply a row cut (append to constraint matrix).
Abstract Base Class for describing an interface to a solver.
virtual const double * getRowUpper() const
Get pointer to array[getNumRows()] of row upper bounds.
const CoinWarmStartBasis * getConstPointerToWarmStart() const
Get warmstarting information.
This solves LPs using the simplex method.
double smallestChangeInCut_
Smallest change in cut.
void passInRanges(int *array)
Pass in range array.
virtual const CoinPackedMatrix * getMatrixByRow() const
Get pointer to row-wise copy of matrix.
virtual bool isDualObjectiveLimitReached() const
Is the given dual objective limit reached?
virtual void addRow(const CoinPackedVectorBase &vec, const double rowlb, const double rowub)
Add a named column (primal variable) to the problem.
virtual int canDoSimplexInterface() const
Simplex API capability.
const double COIN_DBL_MAX
void generateCpp(FILE *fp)
Create C++ lines to get to current state.
void setCleanupScaling(int value)
Set Scaling option When scaling is on it is possible that the scaled problem is feasible but the unsc...
Abstract base class for Clp Matrices.
virtual void applyRowCuts(int numberCuts, const OsiRowCut *cuts)
Apply a collection of row cuts which are all effective.
ClpSimplex * swapModelPtr(ClpSimplex *newModel)
Set pointer to Clp model and return old.
CoinWarmStartBasis basis_
Warmstart information to be used in resolves.
void setOptimizationDirection(double value)
Number of rows.
virtual void replaceMatrix(const CoinPackedMatrix &matrix)
And if it does matter (not used at present)
double * columnUpper() const
Column Upper.
void setOptionalInteger(int index)
Set the index-th variable to be an optional integer variable.
CoinWarmStartBasis * ws_
A pointer to the warmstart information to be used in the hotstarts.
virtual double getObjSense() const
Get objective function sense (1 for min (default), -1 for max)
void setSmallestChangeInCut(double value)
Set smallest change in cut.
int phase() const
Get phase.
virtual void saveInfo()
saves information for next attempt
bool isOptionalInteger(int colIndex) const
Return true if column is integer but does not have to be declared as such.
virtual const double * getRowRange() const
Get pointer to array[getNumRows()] of row ranges.
virtual void addCol(const CoinPackedVectorBase &vec, const double collb, const double colub, const double obj)
Add a named column (primal variable) to the problem.
int numberSOS() const
Number of SOS sets.
CoinPackedMatrix * matrixByRow_
Pointer to row-wise copy of problem matrix coefficients.
void setStuff(double tolerance, double increment)
Sets integer tolerance and increment.
char * spareArrays_
Arrays for hot starts.
Abstract base class for warm start information.
virtual const double * getColUpper() const
Get pointer to array[getNumCols()] of column upper bounds.
unsigned int specialOptions() const
Get special options.
virtual void setRowSetBounds(const int *indexFirst, const int *indexLast, const double *boundList)
Set the bounds on a number of rows simultaneously The default implementation just invokes setRowLowe...
virtual int typeOfDisaster()
Type of disaster 0 can fix, 1 abort.
ClpSimplex * smallModel_
Alternate model (hot starts) - but also could be permanent and used for crunch.
int phase_
phase 0 initial 1 trying continuing with back in and maybe different perturb 2 trying continuing with...
virtual CoinBigIndex getSizeL() const
Return number of entries in L part of current factorization.
bool getDblParam(OsiDblParam key, double &value) const
Get a double parameter.
virtual bool isBinary(int colIndex) const
Return true if variable is binary.
virtual void getBasics(int *index) const
Get basic indices (order of indices corresponds to the order of elements in a vector retured by getBI...
void extractSenseRhsRange() const
A method that fills up the rowsense_, rhs_ and rowrange_ arrays.
void OsiClpSolverInterfaceUnitTest(const std::string &mpsDir, const std::string &netlibDir)
A function that tests the methods in the OsiClpSolverInterface class.
bool fakeMinInSimplex_
Faking min to get proper dual solution signs in simplex API.
virtual double getInfinity() const
Get solver's value for infinity.
virtual void getBasisStatus(int *cstat, int *rstat) const
The following two methods may be replaced by the methods of OsiSolverInterface using OsiWarmStartBasi...
virtual std::vector< double * > getPrimalRays(int maxNumRays) const
Get as many primal rays as the solver can provide.
virtual ~OsiClpDisasterHandler()
Destructor.
bool inTrouble() const
are we in trouble
void setupForRepeatedUse(int senseOfAdventure=0, int printOut=0)
Set up solver for repeated use by Osi interface.
virtual void unmarkHotStart()
Delete the snapshot.
virtual bool isProvenDualInfeasible() const
Is dual infeasiblity proven?
OsiClpDisasterHandler(OsiClpSolverInterface *model=NULL)
Default constructor.
OsiClpSolverInterface * osiModel_
Pointer to model.
virtual void replaceMatrixOptional(const CoinPackedMatrix &matrix)
I (JJF) am getting annoyed because I can't just replace a matrix.
bool setIntParam(OsiIntParam key, int value)
Set an integer parameter.
OsiRowCut * modelCut(const double *originalLower, const double *originalUpper, int numberRowsAtContinuous, const int *whichGenerator, int typeCut=0)
Return a conflict analysis cut from model If type is 0 then genuine cut, if 1 then only partially pro...
virtual int pivot(int colIn, int colOut, int outStatus)
Perform a pivot by substituting a colIn for colOut in the basis.
virtual std::string getColName(int colIndex, unsigned maxLen=static_cast< unsigned >(std::string::npos)) const
Return name of column if one exists or Cnnnnnnn maxLen is currently ignored and only there to match t...
void modifyCoefficient(int row, int column, double newElement, bool keepZero=false)
Modify one element of a matrix.
void freeCachedResults1() const
Deletes all mutable stuff for matrix etc.
ClpSimplex * baseModel_
Copy of model when option 131072 set.
void deleteScaleFactors()
Delete all scale factor stuff and reset option.
virtual int primalPivotResult(int colIn, int sign, int &colOut, int &outStatus, double &t, CoinPackedVector *dx)
Obtain a result of the primal pivot Outputs: colOut – leaving column, outStatus – its status...
double largestAway_
Largest amount continuous away from bound.
virtual CoinPackedMatrix * getMutableMatrixByCol() const
Get pointer to mutable column-wise copy of matrix.
double * objective() const
Objective.
virtual OsiSolverInterface * clone(bool copyData=true) const
Clone.
virtual bool isInteger(int colIndex) const
Return true if column is integer.
CoinDoubleArrayWithLength columnScale_
Column scale factors (has inverse at end)
friend void OsiClpSolverInterfaceUnitTest(const std::string &mpsDir, const std::string &netlibDir)
A function that tests the methods in the OsiClpSolverInterface class.
double * linearObjective_
Linear objective.
const CoinSet * setInfo() const
SOS set info.
virtual int readMps(const char *filename, const char *extension="mps")
Read an mps file from the given filename (defaults to Osi reader) - returns number of errors (see Osi...
virtual void writeMps(const char *filename, const char *extension="mps", double objSense=0.0) const
Write the problem into an mps file of the given filename.
virtual int setBasisStatus(const int *cstat, const int *rstat)
Set the status of structural/artificial variables and factorize, update solution etc.
char * rowsense_
Pointer to dense vector of row sense indicators.
bool getIntParam(OsiIntParam key, int &value) const
Get an integer parameter.
This means it is only a hint.
virtual bool basisIsAvailable() const
Returns true if a basis is available AND problem is optimal.
virtual const double * getRightHandSide() const
Get pointer to array[getNumRows()] of rows right-hand sides.
int whereFrom() const
Get where from.
ClpSolve solveOptions_
Options for initialSolve.
void copyEnabledStuff(ClpSimplex &rhs)
Copy across enabled stuff from one solver to another.
CoinBigIndex getNumElements() const
Number of entries in the packed matrix.
void setBasis()
Just puts current basis_ into ClpSimplex model.
virtual void reset()
Resets as if default constructor.
virtual void setRowType(int index, char sense, double rightHandSide, double range)
Set the type of a single row
virtual int readLp(const char *filename, const double epsilon=1e-5)
Read file in LP format (with names)
Language
Supported languages.
virtual bool isProvenOptimal() const
Is optimality proven?
virtual void branchAndBound()
Invoke solver's built-in enumeration algorithm.
virtual const double * getRowPrice() const
Get pointer to array[getNumRows()] of dual prices.
ClpNodeStuff stuff_
Stuff for fast dual.
OsiRowCut * smallModelCut(const double *originalLower, const double *originalUpper, int numberRowsAtContinuous, const int *whichGenerator, int typeCut=0)
Return a conflict analysis cut from small model.
The default COIN simplex (basis-oriented) warm start class.
double smallestElementInCut() const
Get smallest allowed element in cut.
int itlimOrig_
The original iteration limit before hotstarts started.
OsiClpDisasterHandler & operator=(const OsiClpDisasterHandler &)
Default constructor.
This just implements CoinFactorization when an ClpMatrixBase object is passed.
virtual const double * getColSolution() const
Get pointer to array[getNumCols()] of primal solution vector.
virtual const double * getObjCoefficients() const
Get pointer to array[getNumCols()] of objective function coefficients.
virtual void setColName(int colIndex, std::string name)
Set name of column.
virtual void resolveGub(int needed)
Resolve an LP relaxation after problem modification (try GUB)
double * columnLower() const
Column Lower.
virtual void setColBounds(int elementIndex, double lower, double upper)
Set a single column lower and upper bound.