6 #ifndef ClpDualRowSteepest_H
7 #define ClpDualRowSteepest_H
42 double &changeInObjective);
108 inline int mode()
const
virtual bool looksOptimal() const
Returns true if would not find any row.
Persistence
enums for persistence
virtual ClpDualRowPivot * clone(bool copyData=true) const
Clone.
Dual Row Pivot Steepest Edge Algorithm Class.
virtual void updatePrimalSolution(CoinIndexedVector *input, double theta, double &changeInObjective)
Updates primal solution (and maybe list of candidates) Uses input vector which it deletes Computes ch...
int state_
Status 0) Normal -1) Needs initialization 1) Weights are stored by sequence number.
void setPersistence(Persistence life)
Set/ get persistence.
virtual void clearArrays()
Gets rid of all arrays.
CoinIndexedVector * savedWeights()
Get saved weights.
CoinIndexedVector * infeasible_
square of infeasibility array (just for infeasible rows)
virtual double updateWeights(CoinIndexedVector *input, CoinIndexedVector *spare, CoinIndexedVector *spare2, CoinIndexedVector *updatedColumn)
Updates weights and returns pivot alpha.
void setMode(int mode)
Set mode.
int mode_
If 0 then we are using uninitialized weights, 1 then full, if 2 then uninitialized partial...
virtual void maximumPivotsChanged()
Called when maximum pivots changes.
Persistence persistence_
Life of weights.
void fill(const ClpDualRowSteepest &rhs)
Fill most values.
This solves LPs using the simplex method.
CoinIndexedVector * alternateWeights_
alternate weight array (so we can unroll)
virtual void unrollWeights()
Gets rid of last update.
virtual int pivotRow()
Returns pivot row, -1 if none.
virtual void saveWeights(ClpSimplex *model, int mode)
Saves any weights round factorization as pivot rows may change Save model May also recompute infeasib...
int * dubiousWeights_
Dubious weights.
double * weights_
weight array
CoinIndexedVector * savedWeights_
save weight array (so we can use checkpoint)
Persistence persistence() const
Dual Row Pivot Abstract Base Class.
ClpDualRowSteepest & operator=(const ClpDualRowSteepest &rhs)
Assignment operator.
virtual ~ClpDualRowSteepest()
Destructor.
ClpSimplex * model()
Returns model.
void passInSavedWeights(const CoinIndexedVector *saved)
Pass in saved weights.
ClpDualRowSteepest(int mode=3)
Default Constructor 0 is uninitialized, 1 full, 2 is partial uninitialized, 3 starts as 2 but may swi...