OsiCbcSolverInterface Class Reference

Cbc Solver Interface. More...

#include <OsiCbcSolverInterface.hpp>

Inheritance diagram for OsiCbcSolverInterface:

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Collaboration diagram for OsiCbcSolverInterface:

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List of all members.

Public Member Functions
virtual void	setObjSense (double s)
	Set objective function sense (1 for min (default), -1 for max,).
virtual void	setColSolution (const double *colsol)
	Set the primal solution column values.
virtual void	setRowPrice (const double *rowprice)
	Set dual solution vector.
Solve methods

virtual void	initialSolve ()
	Solve initial LP relaxation.
virtual void	resolve ()
	Resolve an LP relaxation after problem modification.
virtual void	branchAndBound ()
	Invoke solver's built-in enumeration algorithm.
Parameter set/get methods
The set methods return true if the parameter was set to the given value, false otherwise. There can be various reasons for failure: the given parameter is not applicable for the solver (e.g., refactorization frequency for the cbc algorithm), the parameter is not yet implemented for the solver or simply the value of the parameter is out of the range the solver accepts. If a parameter setting call returns false check the details of your solver. The get methods return true if the given parameter is applicable for the solver and is implemented. In this case the value of the parameter is returned in the second argument. Otherwise they return false.
bool	setIntParam (OsiIntParam key, int value)
	Get a hint parameter.
bool	setDblParam (OsiDblParam key, double value)
	Get a hint parameter.
bool	setStrParam (OsiStrParam key, const std::string &value)
	Get a hint parameter.
bool	getIntParam (OsiIntParam key, int &value) const
	Get a hint parameter.
bool	getDblParam (OsiDblParam key, double &value) const
	Get a hint parameter.
bool	getStrParam (OsiStrParam key, std::string &value) const
	Get a hint parameter.
virtual bool	setHintParam (OsiHintParam key, bool yesNo=true, OsiHintStrength strength=OsiHintTry, void *otherInformation=NULL)
	Get a hint parameter.
virtual bool	getHintParam (OsiHintParam key, bool &yesNo, OsiHintStrength &strength, void *&otherInformation) const
	Get a hint parameter.
virtual bool	getHintParam (OsiHintParam key, bool &yesNo, OsiHintStrength &strength) const
	Get a hint parameter.
Methods returning info on how the solution process terminated

virtual bool	isAbandoned () const
	Are there a numerical difficulties?
virtual bool	isProvenOptimal () const
	Is optimality proven?
virtual bool	isProvenPrimalInfeasible () const
	Is primal infeasiblity proven?
virtual bool	isProvenDualInfeasible () const
	Is dual infeasiblity proven?
virtual bool	isPrimalObjectiveLimitReached () const
	Is the given primal objective limit reached?
virtual bool	isDualObjectiveLimitReached () const
	Is the given dual objective limit reached?
virtual bool	isIterationLimitReached () const
	Iteration limit reached?
WarmStart related methods

virtual CoinWarmStart *	getEmptyWarmStart () const
	Get an empty warm start object.
virtual CoinWarmStart *	getWarmStart () const
	Get warmstarting information.
virtual bool	setWarmStart (const CoinWarmStart *warmstart)
	Set warmstarting information.
Hotstart related methods (primarily used in strong branching). <br>
The user can create a hotstart (a snapshot) of the optimization process then reoptimize over and over again always starting from there. NOTE: between hotstarted optimizations only bound changes are allowed.
virtual void	markHotStart ()
	Create a hotstart point of the optimization process.
virtual void	solveFromHotStart ()
	Optimize starting from the hotstart.
virtual void	unmarkHotStart ()
	Delete the snapshot.
Methods related to querying the input data

virtual int	getNumCols () const
	Get number of columns.
virtual int	getNumRows () const
	Get number of rows.
virtual int	getNumElements () const
	Get number of nonzero elements.
virtual const double *	getColLower () const
	Get pointer to array[getNumCols()] of column lower bounds.
virtual const double *	getColUpper () const
	Get pointer to array[getNumCols()] of column upper bounds.
virtual const char *	getRowSense () const
	Get pointer to array[getNumRows()] of row constraint senses.
virtual const double *	getRightHandSide () const
	Get pointer to array[getNumRows()] of rows right-hand sides.
virtual const double *	getRowRange () const
	Get pointer to array[getNumRows()] of row ranges.
virtual const double *	getRowLower () const
	Get pointer to array[getNumRows()] of row lower bounds.
virtual const double *	getRowUpper () const
	Get pointer to array[getNumRows()] of row upper bounds.
virtual const double *	getObjCoefficients () const
	Get pointer to array[getNumCols()] of objective function coefficients.
virtual double	getObjSense () const
	Get objective function sense (1 for min (default), -1 for max).
virtual bool	isContinuous (int colNumber) const
	Return true if column is continuous.
virtual const CoinPackedMatrix *	getMatrixByRow () const
	Get pointer to row-wise copy of matrix.
virtual const CoinPackedMatrix *	getMatrixByCol () const
	Get pointer to column-wise copy of matrix.
virtual double	getInfinity () const
	Get solver's value for infinity.
Methods related to querying the solution

virtual const double *	getColSolution () const
	Get pointer to array[getNumCols()] of primal solution vector.
virtual const double *	getRowPrice () const
	Get pointer to array[getNumRows()] of dual prices.
virtual const double *	getReducedCost () const
	Get a pointer to array[getNumCols()] of reduced costs.
virtual const double *	getRowActivity () const
	Get pointer to array[getNumRows()] of row activity levels (constraint matrix times the solution vector.
virtual double	getObjValue () const
	Get objective function value.
virtual int	getIterationCount () const
	Get how many iterations it took to solve the problem (whatever "iteration" mean to the solver.
virtual std::vector< double * >	getDualRays (int maxNumRays) const
	Get as many dual rays as the solver can provide.
virtual std::vector< double * >	getPrimalRays (int maxNumRays) const
	Get as many primal rays as the solver can provide.
Methods for row and column names.
Because OsiCbc is a pass-through class, it's necessary to override any virtual method in order to be sure we catch an override by the underlying solver. See the OsiSolverInterface class documentation for detailed descriptions.
virtual std::string	dfltRowColName (char rc, int ndx, unsigned digits=7) const
	Generate a standard name of the form Rnnnnnnn or Cnnnnnnn.
virtual std::string	getObjName (unsigned maxLen=std::string::npos) const
	Return the name of the objective function.
virtual void	setObjName (std::string name)
	Set the name of the objective function.
virtual std::string	getRowName (int rowIndex, unsigned maxLen=std::string::npos) const
	Return the name of the row.
virtual const OsiNameVec &	getRowNames ()
	Return a pointer to a vector of row names.
virtual void	setRowName (int ndx, std::string name)
	Set a row name.
virtual void	setRowNames (OsiNameVec &srcNames, int srcStart, int len, int tgtStart)
	Set multiple row names.
virtual void	deleteRowNames (int tgtStart, int len)
	Delete len row names starting at index tgtStart.
virtual std::string	getColName (int colIndex, unsigned maxLen=std::string::npos) const
	Return the name of the column.
virtual const OsiNameVec &	getColNames ()
	Return a pointer to a vector of column names.
virtual void	setColName (int ndx, std::string name)
	Set a column name.
virtual void	setColNames (OsiNameVec &srcNames, int srcStart, int len, int tgtStart)
	Set multiple column names.
virtual void	deleteColNames (int tgtStart, int len)
	Delete len column names starting at index tgtStart.
Changing bounds on variables and constraints

virtual void	setObjCoeff (int elementIndex, double elementValue)
	Set an objective function coefficient.
virtual void	setColLower (int elementIndex, double elementValue)
	Set a single column lower bound Use -DBL_MAX for -infinity.
virtual void	setColUpper (int elementIndex, double elementValue)
	Set a single column upper bound Use DBL_MAX for infinity.
virtual void	setColBounds (int elementIndex, double lower, double upper)
	Set a single column lower and upper bound.
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 setColLower() and setColUpper() over and over again.
virtual void	setRowLower (int elementIndex, double elementValue)
	Set a single row lower bound Use -DBL_MAX for -infinity.
virtual void	setRowUpper (int elementIndex, double elementValue)
	Set a single row upper bound Use DBL_MAX for infinity.
virtual void	setRowBounds (int elementIndex, double lower, double upper)
	Set a single row lower and upper bound.
virtual void	setRowType (int index, char sense, double rightHandSide, double range)
	Set the type of a single row .
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 setRowLower() and setRowUpper() over and over again.
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() over and over again.
Integrality related changing methods

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.
virtual void	setContinuous (const int *indices, int len)
	Set the variables listed in indices (which is of length len) to be continuous variables.
virtual void	setInteger (const int *indices, int len)
	Set the variables listed in indices (which is of length len) to be integer variables.
Methods to expand a problem.<br>
Note that if a column is added then by default it will correspond to a continuous variable.
virtual void	addCol (const CoinPackedVectorBase &vec, const double collb, const double colub, const double obj)
	Add a column (primal variable) to the problem.
virtual void	addCol (int numberElements, const int rows, const double elements, const double collb, const double colub, const double obj)
	Add a column (primal variable) to the problem.
virtual void	addCols (const int numcols, const CoinPackedVectorBase const cols, const double collb, const double colub, const double *obj)
	Add a column (primal variable) to the problem.
virtual void	deleteCols (const int num, const int *colIndices)
	Add a column (primal variable) to the problem.
virtual void	addRow (const CoinPackedVectorBase &vec, const double rowlb, const double rowub)
	Add a column (primal variable) to the problem.
virtual void	addRow (const CoinPackedVectorBase &vec, const char rowsen, const double rowrhs, const double rowrng)
	Add a column (primal variable) to the problem.
virtual void	addRows (const int numrows, const CoinPackedVectorBase const rows, const double rowlb, const double rowub)
	Add a column (primal variable) to the problem.
virtual void	addRows (const int numrows, const CoinPackedVectorBase const rows, const char rowsen, const double rowrhs, const double *rowrng)
	Add a column (primal variable) to the problem.
virtual void	deleteRows (const int num, const int *rowIndices)
	Add a column (primal variable) to the problem.
virtual void	applyRowCuts (int numberCuts, const OsiRowCut *cuts)
	Apply a collection of row cuts which are all effective.
virtual void	applyRowCuts (int numberCuts, const OsiRowCut **cuts)
	Apply a collection of row cuts which are all effective.
Methods to input a problem

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 bounds).
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 lower and upper bounds).
virtual void	loadProblem (const CoinPackedMatrix &matrix, const double collb, const double colub, const double obj, const char rowsen, const double rowrhs, const double rowrng)
	Load in an problem by copying the arguments (the constraints on the rows are given by sense/rhs/range triplets).
virtual void	assignProblem (CoinPackedMatrix &matrix, double &collb, double &colub, double &obj, char &rowsen, double &rowrhs, double *&rowrng)
	Load in an problem by assuming ownership of the arguments (the constraints on the rows are given by sense/rhs/range triplets).
virtual void	loadProblem (const int numcols, const int numrows, const CoinBigIndex start, const int index, const double value, const double collb, const double colub, const double obj, const double rowlb, const double rowub)
	Just like the other loadProblem() methods except that the matrix is given in a standard column major ordered format (without gaps).
virtual void	loadProblem (const int numcols, const int numrows, const CoinBigIndex start, const int index, const double value, const double collb, const double colub, const double obj, const char rowsen, const double rowrhs, const double *rowrng)
	Just like the other loadProblem() methods except that the matrix is given in a standard column major ordered format (without gaps).
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 OsiMpsReader class).
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	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.
Message handling (extra for Cbc messages).
Normally I presume you would want the same language. If not then you could use underlying model pointer
void	newLanguage (CoinMessages::Language language)
	Set language.
void	setLanguage (CoinMessages::Language language)
	Set language.
Cbc specific public interfaces

CbcModel *	getModelPtr () const
	Get pointer to Cbc model.
OsiSolverInterface *	getRealSolverPtr () const
	Get pointer to underlying solver.
void	setCutoff (double value)
	Set cutoff bound on the objective function.
double	getCutoff () const
	Get the cutoff bound on the objective function - always as minimize.
void	setMaximumNodes (int value)
	Set the CbcModel::CbcMaxNumNode maximum node limit.
int	getMaximumNodes () const
	Get the CbcModel::CbcMaxNumNode maximum node limit.
void	setMaximumSolutions (int value)
	Set the CbcModel::CbcMaxNumSol maximum number of solutions.
int	getMaximumSolutions () const
	Get the CbcModel::CbcMaxNumSol maximum number of solutions.
void	setMaximumSeconds (double value)
	Set the CbcModel::CbcMaximumSeconds maximum number of seconds.
double	getMaximumSeconds () const
	Get the CbcModel::CbcMaximumSeconds maximum number of seconds.
bool	isNodeLimitReached () const
	Node limit reached?
bool	isSolutionLimitReached () const
	Solution limit reached?
int	getNodeCount () const
	Get how many Nodes it took to solve the problem.
int	status () const
	Final status of problem - 0 finished, 1 stopped, 2 difficulties.
Constructors and destructors

	OsiCbcSolverInterface (OsiSolverInterface solver=NULL, CbcStrategy strategy=NULL)
	Default Constructor.
virtual OsiSolverInterface *	clone (bool copyData=true) const
	Clone.
	OsiCbcSolverInterface (const OsiCbcSolverInterface &)
	Copy constructor.
OsiCbcSolverInterface &	operator= (const OsiCbcSolverInterface &rhs)
	Assignment operator.
virtual	~OsiCbcSolverInterface ()
	Destructor.
Protected Member Functions
Protected methods

virtual void	applyRowCut (const OsiRowCut &rc)
	Apply a row cut (append to constraint matrix).
virtual void	applyColCut (const OsiColCut &cc)
	Apply a column cut (adjust one or more bounds).
Protected Attributes
Protected member data

CbcModel *	modelPtr_
	Cbc model represented by this class instance.
Friends
void	OsiCbcSolverInterfaceUnitTest (const std::string &mpsDir, const std::string &netlibDir)
	A function that tests the methods in the OsiCbcSolverInterface class.

Detailed Description

Cbc Solver Interface.

Instantiation of OsiCbcSolverInterface for the Model Algorithm.

Definition at line 32 of file OsiCbcSolverInterface.hpp.

Constructor & Destructor Documentation

OsiCbcSolverInterface::OsiCbcSolverInterface	(	OsiSolverInterface *	solver = `NULL`,
		CbcStrategy *	strategy = `NULL`
	)

Default Constructor.

OsiCbcSolverInterface::OsiCbcSolverInterface ( const OsiCbcSolverInterface & )

Copy constructor.

virtual OsiCbcSolverInterface::~OsiCbcSolverInterface ( ) [virtual]

Destructor.

Member Function Documentation

virtual void OsiCbcSolverInterface::initialSolve ( ) [virtual]

Solve initial LP relaxation.

Implements OsiSolverInterface.

virtual void OsiCbcSolverInterface::resolve ( ) [virtual]

Resolve an LP relaxation after problem modification.

Implements OsiSolverInterface.

virtual void OsiCbcSolverInterface::branchAndBound ( ) [virtual]

Invoke solver's built-in enumeration algorithm.

Implements OsiSolverInterface.

bool OsiCbcSolverInterface::setIntParam	(	OsiIntParam	key,
		int	value
	)			`[virtual]`

Get a hint parameter.

Reimplemented from OsiSolverInterface.

bool OsiCbcSolverInterface::setDblParam	(	OsiDblParam	key,
		double	value
	)			`[virtual]`

Get a hint parameter.

Reimplemented from OsiSolverInterface.

bool OsiCbcSolverInterface::setStrParam	(	OsiStrParam	key,
		const std::string &	value
	)			`[virtual]`

Get a hint parameter.

Reimplemented from OsiSolverInterface.

bool OsiCbcSolverInterface::getIntParam	(	OsiIntParam	key,
		int &	value
	)			const `[virtual]`

Get a hint parameter.

Reimplemented from OsiSolverInterface.

bool OsiCbcSolverInterface::getDblParam	(	OsiDblParam	key,
		double &	value
	)			const `[virtual]`

Get a hint parameter.

Reimplemented from OsiSolverInterface.

bool OsiCbcSolverInterface::getStrParam	(	OsiStrParam	key,
		std::string &	value
	)			const `[virtual]`

Get a hint parameter.

Reimplemented from OsiSolverInterface.

virtual bool OsiCbcSolverInterface::setHintParam	(	OsiHintParam	key,
		bool	yesNo = `true`,
		OsiHintStrength	strength = `OsiHintTry`,
		void *	otherInformation = `NULL`
	)			`[virtual]`

Get a hint parameter.

Reimplemented from OsiSolverInterface.

virtual bool OsiCbcSolverInterface::getHintParam	(	OsiHintParam	key,
		bool &	yesNo,
		OsiHintStrength &	strength,
		void *&	otherInformation
	)			const `[virtual]`

Get a hint parameter.

Reimplemented from OsiSolverInterface.

virtual bool OsiCbcSolverInterface::getHintParam	(	OsiHintParam	key,
		bool &	yesNo,
		OsiHintStrength &	strength
	)			const `[virtual]`

Get a hint parameter.

Reimplemented from OsiSolverInterface.

virtual bool OsiCbcSolverInterface::isAbandoned ( ) const [virtual]

Are there a numerical difficulties?

Implements OsiSolverInterface.

virtual bool OsiCbcSolverInterface::isProvenOptimal ( ) const [virtual]

Is optimality proven?

Implements OsiSolverInterface.

virtual bool OsiCbcSolverInterface::isProvenPrimalInfeasible ( ) const [virtual]

Is primal infeasiblity proven?

Implements OsiSolverInterface.

virtual bool OsiCbcSolverInterface::isProvenDualInfeasible ( ) const [virtual]

Is dual infeasiblity proven?

Implements OsiSolverInterface.

virtual bool OsiCbcSolverInterface::isPrimalObjectiveLimitReached ( ) const [virtual]

Is the given primal objective limit reached?

Implements OsiSolverInterface.

virtual bool OsiCbcSolverInterface::isDualObjectiveLimitReached ( ) const [virtual]

Is the given dual objective limit reached?

Implements OsiSolverInterface.

virtual bool OsiCbcSolverInterface::isIterationLimitReached ( ) const [virtual]

Iteration limit reached?

Implements OsiSolverInterface.

virtual CoinWarmStart* OsiCbcSolverInterface::getEmptyWarmStart ( ) const [virtual]

Get an empty warm start object.

This routine returns an empty CoinWarmStartBasis object. Its purpose is to provide a way to give a client a warm start basis object of the appropriate type, which can resized and modified as desired.

Implements OsiSolverInterface.

virtual CoinWarmStart* OsiCbcSolverInterface::getWarmStart ( ) const [virtual]

Get warmstarting information.

Implements OsiSolverInterface.

virtual bool OsiCbcSolverInterface::setWarmStart ( const CoinWarmStart * warmstart ) [virtual]

Set warmstarting information.

Return true/false depending on whether the warmstart information was accepted or not.

Implements OsiSolverInterface.

virtual void OsiCbcSolverInterface::markHotStart ( ) [virtual]

Create a hotstart point of the optimization process.

Reimplemented from OsiSolverInterface.

virtual void OsiCbcSolverInterface::solveFromHotStart ( ) [virtual]

Optimize starting from the hotstart.

Reimplemented from OsiSolverInterface.

virtual void OsiCbcSolverInterface::unmarkHotStart ( ) [virtual]

Delete the snapshot.

Reimplemented from OsiSolverInterface.

virtual int OsiCbcSolverInterface::getNumCols ( ) const [virtual]

Get number of columns.

Implements OsiSolverInterface.

virtual int OsiCbcSolverInterface::getNumRows ( ) const [virtual]

Get number of rows.

Implements OsiSolverInterface.

virtual int OsiCbcSolverInterface::getNumElements ( ) const [virtual]

Get number of nonzero elements.

Implements OsiSolverInterface.

virtual const double* OsiCbcSolverInterface::getColLower ( ) const [virtual]

Get pointer to array[getNumCols()] of column lower bounds.

Implements OsiSolverInterface.

virtual const double* OsiCbcSolverInterface::getColUpper ( ) const [virtual]

Get pointer to array[getNumCols()] of column upper bounds.

Implements OsiSolverInterface.

virtual const char* OsiCbcSolverInterface::getRowSense ( ) const [virtual]

Get pointer to array[getNumRows()] of row constraint senses.

'L' <= constraint
'E' = constraint
'G' >= constraint
'R' ranged constraint
'N' free constraint

Implements OsiSolverInterface.

virtual const double* OsiCbcSolverInterface::getRightHandSide ( ) const [virtual]

Get pointer to array[getNumRows()] of rows right-hand sides.

if rowsense()[i] == 'L' then rhs()[i] == rowupper()[i]
if rowsense()[i] == 'G' then rhs()[i] == rowlower()[i]
if rowsense()[i] == 'R' then rhs()[i] == rowupper()[i]
if rowsense()[i] == 'N' then rhs()[i] == 0.0

Implements OsiSolverInterface.

virtual const double* OsiCbcSolverInterface::getRowRange ( ) const [virtual]

Get pointer to array[getNumRows()] of row ranges.

if rowsense()[i] == 'R' then rowrange()[i] == rowupper()[i] - rowlower()[i]
if rowsense()[i] != 'R' then rowrange()[i] is undefined

Implements OsiSolverInterface.

virtual const double* OsiCbcSolverInterface::getRowLower ( ) const [virtual]

Get pointer to array[getNumRows()] of row lower bounds.

Implements OsiSolverInterface.

virtual const double* OsiCbcSolverInterface::getRowUpper ( ) const [virtual]

Get pointer to array[getNumRows()] of row upper bounds.

Implements OsiSolverInterface.

virtual const double* OsiCbcSolverInterface::getObjCoefficients ( ) const [virtual]

Get pointer to array[getNumCols()] of objective function coefficients.

Implements OsiSolverInterface.

virtual double OsiCbcSolverInterface::getObjSense ( ) const [virtual]

Get objective function sense (1 for min (default), -1 for max).

Implements OsiSolverInterface.

virtual bool OsiCbcSolverInterface::isContinuous ( int colNumber ) const [virtual]

Return true if column is continuous.

Implements OsiSolverInterface.

virtual const CoinPackedMatrix* OsiCbcSolverInterface::getMatrixByRow ( ) const [virtual]

Get pointer to row-wise copy of matrix.

Implements OsiSolverInterface.

virtual const CoinPackedMatrix* OsiCbcSolverInterface::getMatrixByCol ( ) const [virtual]

Get pointer to column-wise copy of matrix.

Implements OsiSolverInterface.

virtual double OsiCbcSolverInterface::getInfinity ( ) const [virtual]

Get solver's value for infinity.

Implements OsiSolverInterface.

virtual const double* OsiCbcSolverInterface::getColSolution ( ) const [virtual]

Get pointer to array[getNumCols()] of primal solution vector.

Implements OsiSolverInterface.

virtual const double* OsiCbcSolverInterface::getRowPrice ( ) const [virtual]

Get pointer to array[getNumRows()] of dual prices.

Implements OsiSolverInterface.

virtual const double* OsiCbcSolverInterface::getReducedCost ( ) const [virtual]

Get a pointer to array[getNumCols()] of reduced costs.

Implements OsiSolverInterface.

virtual const double* OsiCbcSolverInterface::getRowActivity ( ) const [virtual]

Get pointer to array[getNumRows()] of row activity levels (constraint matrix times the solution vector.

Implements OsiSolverInterface.

virtual double OsiCbcSolverInterface::getObjValue ( ) const [virtual]

Get objective function value.

Implements OsiSolverInterface.

virtual int OsiCbcSolverInterface::getIterationCount ( ) const [virtual]

Get how many iterations it took to solve the problem (whatever "iteration" mean to the solver.

Implements OsiSolverInterface.

virtual std::vector<double*> OsiCbcSolverInterface::getDualRays ( int maxNumRays ) const [virtual]

Get as many dual rays as the solver can provide.

(In case of proven primal infeasibility there should be at least one.)

NOTE for implementers of solver interfaces:
The double pointers in the vector should point to arrays of length getNumRows() and they should be allocated via new[].

NOTE for users of solver interfaces:
It is the user's responsibility to free the double pointers in the vector using delete[].

Implements OsiSolverInterface.

virtual std::vector<double*> OsiCbcSolverInterface::getPrimalRays ( int maxNumRays ) const [virtual]

Get as many primal rays as the solver can provide.

(In case of proven dual infeasibility there should be at least one.)

NOTE for implementers of solver interfaces:
The double pointers in the vector should point to arrays of length getNumCols() and they should be allocated via new[].

NOTE for users of solver interfaces:
It is the user's responsibility to free the double pointers in the vector using delete[].

Implements OsiSolverInterface.

virtual std::string OsiCbcSolverInterface::dfltRowColName	(	char	rc,
		int	ndx,
		unsigned	digits = `7`
	)			const `[virtual]`

Generate a standard name of the form Rnnnnnnn or Cnnnnnnn.

Reimplemented from OsiSolverInterface.

virtual std::string OsiCbcSolverInterface::getObjName ( unsigned maxLen = std::string::npos ) const [virtual]

Return the name of the objective function.

Reimplemented from OsiSolverInterface.

virtual void OsiCbcSolverInterface::setObjName ( std::string name ) [virtual]

Set the name of the objective function.

Reimplemented from OsiSolverInterface.

virtual std::string OsiCbcSolverInterface::getRowName	(	int	rowIndex,
		unsigned	maxLen = `std::string::npos`
	)			const `[virtual]`

Return the name of the row.

Reimplemented from OsiSolverInterface.

virtual const OsiNameVec& OsiCbcSolverInterface::getRowNames ( ) [virtual]

Return a pointer to a vector of row names.

Reimplemented from OsiSolverInterface.

virtual void OsiCbcSolverInterface::setRowName	(	int	ndx,
		std::string	name
	)			`[virtual]`

Set a row name.

Reimplemented from OsiSolverInterface.

virtual void OsiCbcSolverInterface::setRowNames	(	OsiNameVec &	srcNames,
		int	srcStart,
		int	len,
		int	tgtStart
	)			`[virtual]`

Set multiple row names.

Reimplemented from OsiSolverInterface.

virtual void OsiCbcSolverInterface::deleteRowNames	(	int	tgtStart,
		int	len
	)			`[virtual]`

Delete len row names starting at index tgtStart.

Reimplemented from OsiSolverInterface.

virtual std::string OsiCbcSolverInterface::getColName	(	int	colIndex,
		unsigned	maxLen = `std::string::npos`
	)			const `[virtual]`

Return the name of the column.

Reimplemented from OsiSolverInterface.

virtual const OsiNameVec& OsiCbcSolverInterface::getColNames ( ) [virtual]

Return a pointer to a vector of column names.

Reimplemented from OsiSolverInterface.

virtual void OsiCbcSolverInterface::setColName	(	int	ndx,
		std::string	name
	)			`[virtual]`

Set a column name.

Reimplemented from OsiSolverInterface.

virtual void OsiCbcSolverInterface::setColNames	(	OsiNameVec &	srcNames,
		int	srcStart,
		int	len,
		int	tgtStart
	)			`[virtual]`

Set multiple column names.

Reimplemented from OsiSolverInterface.

virtual void OsiCbcSolverInterface::deleteColNames	(	int	tgtStart,
		int	len
	)			`[virtual]`

Delete len column names starting at index tgtStart.

Reimplemented from OsiSolverInterface.

virtual void OsiCbcSolverInterface::setObjCoeff	(	int	elementIndex,
		double	elementValue
	)			`[virtual]`

Set an objective function coefficient.

Implements OsiSolverInterface.

virtual void OsiCbcSolverInterface::setColLower	(	int	elementIndex,
		double	elementValue
	)			`[virtual]`

Set a single column lower bound
Use -DBL_MAX for -infinity.

Implements OsiSolverInterface.

virtual void OsiCbcSolverInterface::setColUpper	(	int	elementIndex,
		double	elementValue
	)			`[virtual]`

Set a single column upper bound
Use DBL_MAX for infinity.

Implements OsiSolverInterface.

virtual void OsiCbcSolverInterface::setColBounds	(	int	elementIndex,
		double	lower,
		double	upper
	)			`[virtual]`

Set a single column lower and upper bound.

Reimplemented from OsiSolverInterface.

virtual void OsiCbcSolverInterface::setColSetBounds	(	const int *	indexFirst,
		const int *	indexLast,
		const double *	boundList
	)			`[virtual]`

Set the bounds on a number of columns simultaneously
The default implementation just invokes setColLower() and setColUpper() over and over again.

Parameters:

	indexFirst,indexLast	pointers to the beginning and after the end of the array of the indices of the variables whose either bound changes
	boundList	the new lower/upper bound pairs for the variables

Reimplemented from OsiSolverInterface.

virtual void OsiCbcSolverInterface::setRowLower	(	int	elementIndex,
		double	elementValue
	)			`[virtual]`

Set a single row lower bound
Use -DBL_MAX for -infinity.

Implements OsiSolverInterface.

virtual void OsiCbcSolverInterface::setRowUpper	(	int	elementIndex,
		double	elementValue
	)			`[virtual]`

Set a single row upper bound
Use DBL_MAX for infinity.

Implements OsiSolverInterface.

virtual void OsiCbcSolverInterface::setRowBounds	(	int	elementIndex,
		double	lower,
		double	upper
	)			`[virtual]`

Set a single row lower and upper bound.

Reimplemented from OsiSolverInterface.

virtual void OsiCbcSolverInterface::setRowType	(	int	index,
		char	sense,
		double	rightHandSide,
		double	range
	)			`[virtual]`

Set the type of a single row
.

Implements OsiSolverInterface.

virtual void OsiCbcSolverInterface::setRowSetBounds	(	const int *	indexFirst,
		const int *	indexLast,
		const double *	boundList
	)			`[virtual]`

Set the bounds on a number of rows simultaneously
The default implementation just invokes setRowLower() and setRowUpper() over and over again.

Parameters:

	indexFirst,indexLast	pointers to the beginning and after the end of the array of the indices of the constraints whose either bound changes
	boundList	the new lower/upper bound pairs for the constraints

Reimplemented from OsiSolverInterface.

virtual void OsiCbcSolverInterface::setRowSetTypes	(	const int *	indexFirst,
		const int *	indexLast,
		const char *	senseList,
		const double *	rhsList,
		const double *	rangeList
	)			`[virtual]`

Set the type of a number of rows simultaneously
The default implementation just invokes setRowType() over and over again.

Parameters:

	indexFirst,indexLast	pointers to the beginning and after the end of the array of the indices of the constraints whose any characteristics changes
	senseList	the new senses
	rhsList	the new right hand sides
	rangeList	the new ranges

Reimplemented from OsiSolverInterface.

virtual void OsiCbcSolverInterface::setContinuous ( int index ) [virtual]

Set the index-th variable to be a continuous variable.

Implements OsiSolverInterface.

virtual void OsiCbcSolverInterface::setInteger ( int index ) [virtual]

Set the index-th variable to be an integer variable.

Implements OsiSolverInterface.

virtual void OsiCbcSolverInterface::setContinuous	(	const int *	indices,
		int	len
	)			`[virtual]`

Set the variables listed in indices (which is of length len) to be continuous variables.

Reimplemented from OsiSolverInterface.

virtual void OsiCbcSolverInterface::setInteger	(	const int *	indices,
		int	len
	)			`[virtual]`

Set the variables listed in indices (which is of length len) to be integer variables.

Reimplemented from OsiSolverInterface.

virtual void OsiCbcSolverInterface::setObjSense ( double s ) [virtual]

Set objective function sense (1 for min (default), -1 for max,).

Implements OsiSolverInterface.

virtual void OsiCbcSolverInterface::setColSolution ( const double * colsol ) [virtual]

Set the primal solution column values.

colsol[numcols()] is an array of values of the problem column variables. These values are copied to memory owned by the solver object or the solver. They will be returned as the result of colsol() until changed by another call to setColsol() or by a call to any solver routine. Whether the solver makes use of the solution in any way is solver-dependent.

Implements OsiSolverInterface.

virtual void OsiCbcSolverInterface::setRowPrice ( const double * rowprice ) [virtual]

Set dual solution vector.

rowprice[numrows()] is an array of values of the problem row dual variables. These values are copied to memory owned by the solver object or the solver. They will be returned as the result of rowprice() until changed by another call to setRowprice() or by a call to any solver routine. Whether the solver makes use of the solution in any way is solver-dependent.

Implements OsiSolverInterface.

virtual void OsiCbcSolverInterface::addCol	(	const CoinPackedVectorBase &	vec,
		const double	collb,
		const double	colub,
		const double	obj
	)			`[virtual]`