6#ifndef AbcDualRowPivot_H
7#define AbcDualRowPivot_H
11class CoinIndexedVector;
34 virtual double updateWeights1(CoinIndexedVector &input, CoinIndexedVector &updateColumn) = 0;
36 virtual double updateWeights(CoinIndexedVector &input, CoinIndexedVector &updateColumn) = 0;
38 virtual void updateWeights2(CoinIndexedVector &input, CoinIndexedVector &updateColumn) = 0;
49 CoinIndexedVector &updateColumn,
127#ifndef CLP_DUAL_COLUMN_MULTIPLIER
Dual Row Pivot Abstract Base Class.
AbcSimplex * model()
Returns model.
virtual ~AbcDualRowPivot()
Destructor.
void setModel(AbcSimplex *newmodel)
Sets model (normally to NULL)
int type_
Type of row pivot algorithm.
virtual void updateWeights2(CoinIndexedVector &input, CoinIndexedVector &updateColumn)=0
Actually updates weights.
AbcDualRowPivot & operator=(const AbcDualRowPivot &rhs)
Assignment operator.
int type()
Returns type (above 63 is extra information)
AbcSimplex * model_
Pointer to model.
virtual bool looksOptimal() const
Returns true if would not find any row.
virtual double updateWeights1(CoinIndexedVector &input, CoinIndexedVector &updateColumn)=0
Does most of work for weights and returns pivot alpha.
virtual void updateWeightsOnly(CoinIndexedVector &input)=0
virtual double updateWeights(CoinIndexedVector &input, CoinIndexedVector &updateColumn)=0
virtual int pivotRow()=0
Returns pivot row, -1 if none.
virtual AbcDualRowPivot * clone(bool copyData=true) const =0
Clone.
AbcDualRowPivot(const AbcDualRowPivot &)
Copy constructor.
AbcDualRowPivot()
Default Constructor.
virtual void checkAccuracy()
checks accuracy and may re-initialize (may be empty)
virtual void updatePrimalSolutionAndWeights(CoinIndexedVector &weightsVector, CoinIndexedVector &updateColumn, double theta)
virtual void saveWeights(AbcSimplex *model, int mode)
Saves any weights round factorization as pivot rows may change Will be empty unless steepest edge (wi...
virtual void clearArrays()
Gets rid of all arrays (may be empty)
virtual void recomputeInfeasibilities()
Recompute infeasibilities.
virtual void updatePrimalSolution(CoinIndexedVector &updateColumn, double theta)=0
Updates primal solution (and maybe list of candidates) Uses input vector which it deletes Would be fa...