6 #ifndef ClpFactorization_H
7 #define ClpFactorization_H
16 #ifndef CLP_MULTIPLE_FACTORIZATIONS
17 #define CLP_MULTIPLE_FACTORIZATIONS 4
19 #ifdef CLP_MULTIPLE_FACTORIZATIONS
23 #ifndef COIN_FAST_CODE
24 #define COIN_FAST_CODE
26 #ifndef CLP_FACTORIZATION_NEW_TIMING
27 #define CLP_FACTORIZATION_NEW_TIMING 1
71 #ifdef CLP_MULTIPLE_FACTORIZATIONS
94 bool checkBeforeModifying =
false,
95 double acceptablePivot = 1.0e-8);
96 #if ABOCA_LITE_FACTORIZATION
119 bool noPermute =
false)
const;
128 bool noPermuteRegion3 =
false);
132 bool noPermute =
false)
const;
145 #ifdef CLP_MULTIPLE_FACTORIZATIONS
293 #if CLP_FACTORIZATION_NEW_TIMING > 1
294 void statsRefactor(
char when)
const;
412 #ifndef COIN_FAST_CODE
473 #ifndef COIN_FAST_CODE
479 inline void goDense() {}
521 #ifdef CLP_MULTIPLE_FACTORIZATIONS
526 #ifdef CLP_REUSE_ETAS
539 #ifdef CLP_FACTORIZATION_NEW_TIMING
double slackValue() const
Whether slack value is +1 or -1.
void forceOtherFactorization(int which)
If nonzero force use of 1,dense 2,small 3,osl.
virtual int * permute() const =0
Returns permute in.
int pivots() const
Returns number of pivots since factorization.
double totalInIncreasingU_
Pointer to network basis.
int numberDense() const
Returns number of dense rows.
int updateColumnTranspose(CoinIndexedVector *regionSparse, CoinIndexedVector *regionSparse2) const
Updates one column (BTRAN) from region2 region1 starts as zero and is zero at end.
int numberElementsR() const
Returns number in R area.
int goSmallThreshold() const
Get switch to small if number rows <= this.
int factorize(ClpSimplex *model, int solveType, bool valuesPass)
When part of LP - given by basic variables.
bool networkBasis() const
Says if a network basis.
void almostDestructor()
Delete all stuff (leaves as after CoinFactorization())
void setBiasLU(int value)
Returns number of dense rows.
void updateTwoColumnsTranspose(CoinIndexedVector *regionSparse, CoinIndexedVector *regionSparse2, CoinIndexedVector *regionSparse3) const
Updates two columns (BTRAN) from regionSparse2 and 3 regionSparse starts as zero and is zero at end N...
~ClpFactorization()
Destructor.
bool needToReorder() const
Says whether to redo pivot order.
int persistenceFlag() const
Array persistence flag If 0 then as now (delete/new) 1 then only do arrays if bigger needed 2 as 1 bu...
void clearArrays()
Get rid of all memory.
int * pivotColumn() const
Returns address of pivotColumn region (also used for permuting)
int updateColumn(CoinIndexedVector *regionSparse, CoinIndexedVector *regionSparse2, bool noPermute=false) const
Updates one column (FTRAN) from region2 region1 starts as zero and is zero at end.
int numberElements() const
Total number of elements in factorization.
void setStatus(int value)
Sets status.
int updateColumnForDebug(CoinIndexedVector *regionSparse, CoinIndexedVector *regionSparse2, bool noPermute=false) const
For debug (no statistics update)
double adjustedAreaFactor() const
Returns areaFactor but adjusted for dense.
void setPersistenceFlag(int value)
Total number of elements in factorization.
Abstract base class which also has some scalars so can be used from Dense or Simp.
int numberElementsU() const
Returns number in U area.
void zeroTolerance(double value)
Set zero tolerance.
int sparseThreshold() const
get sparse threshold
ClpNetworkBasis * networkBasis_
Pointer to network basis.
int status() const
Returns status.
void setPersistenceFlag(int value)
Returns number of dense rows.
CoinFactorization * coinFactorization() const
Return coinFactorizationA_.
void setStatus(int value)
Sets status.
CoinBigIndex numberElementsR() const
Returns number in R area.
#define CLP_MULTIPLE_FACTORIZATIONS
double adjustedAreaFactor() const
Returns areaFactor but adjusted for dense.
ClpFactorization()
Default constructor.
This deals with Factorization and Updates for network structures.
CoinOtherFactorization * coinFactorizationB_
Pointer to CoinOtherFactorization.
bool timeToRefactorize() const
Total number of elements in factorization.
int * permute() const
Returns address of permute region.
CoinBigIndex numberElementsU() const
Returns number in U area.
int maximumPivots() const
Maximum number of pivots between factorizations.
int goDenseThreshold() const
Get switch to dense if number rows <= this.
int numberRows() const
Number of Rows after factorization.
double zeroTolerance() const
Zero tolerance.
int persistenceFlag() const
Array persistence flag If 0 then as now (delete/new) 1 then only do arrays if bigger needed 2 as 1 bu...
ClpFactorization & operator=(const ClpFactorization &)
The copy constructor from an CoinFactorization.
int denseThreshold() const
Gets dense threshold.
void setFactorization(ClpFactorization &factorization)
Sets factorization.
double pivotTolerance() const
Pivot tolerance.
int maximumPivots() const
Maximum number of pivots between factorizations.
double zeroTolerance() const
Zero tolerance.
int endLengthU_
Pointer to network basis.
void clearArrays()
Get rid of all memory.
void saferTolerances(double zeroTolerance, double pivotTolerance)
Set tolerances to safer of existing and given.
double pivotTolerance() const
Pivot tolerance.
void cleanUp()
Cleans up i.e. gets rid of network basis.
double shortestAverage_
For guessing when to re-factorize.
void pivotTolerance(double value)
Set pivot tolerance.
double areaFactor() const
Whether larger areas needed.
void doStatistics(bool trueFalse) const
To switch statistics on or off.
void setForrestTomlin(bool value)
true if Forrest Tomlin update, false if PFI
int * permute() const
Returns address of permute region.
int goSmallThreshold_
Switch to small if number rows <= this.
void setGoOslThreshold(int value)
Set switch to osl if number rows <= this.
int numberElements() const
Total number of elements in factorization.
void setGoSmallThreshold(int value)
Set switch to small if number rows <= this.
This solves LPs using the simplex method.
void sparseThreshold(int value)
Set sparse threshold.
int updateTwoColumnsFT(CoinIndexedVector *regionSparse1, CoinIndexedVector *regionSparse2, CoinIndexedVector *regionSparse3, bool noPermuteRegion3=false)
Updates one column (FTRAN) from region2 Tries to do FT update number returned is negative if no room...
int goOslThreshold() const
Get switch to osl if number rows <= this.
int maximumPivots() const
Maximum number of pivots between factorizations.
void setGoDenseThreshold(int value)
Set switch to dense if number rows <= this.
int updateColumnFT(CoinIndexedVector *regionSparse, CoinIndexedVector *regionSparse2)
Updates one column (FTRAN) from region2 Tries to do FT update number returned is negative if no room ...
Abstract base class for Clp Matrices.
double totalInR_
Pointer to network basis.
int numberDense() const
Returns number of dense rows.
void setDefaultValues()
Sets default values.
int replaceColumn(const ClpSimplex *model, CoinIndexedVector *regionSparse, CoinIndexedVector *tableauColumn, int pivotRow, double pivotCheck, bool checkBeforeModifying=false, double acceptablePivot=1.0e-8)
Replaces one Column to basis, returns 0=OK, 1=Probably OK, 2=singular, 3=no room If checkBeforeModify...
int numberRows() const
Number of Rows after factorization.
int pivots() const
Returns number of pivots since factorization.
int * pivotColumn() const
Returns address of pivotColumn region (also used for permuting)
int numberElementsL() const
Returns number in L area.
void areaFactor(double value)
Set whether larger areas needed.
void getWeights(int *weights) const
Fills weighted row list.
int forceB_
If nonzero force use of 1,dense 2,small 3,osl.
int status() const
Returns status.
int status() const
Returns status.
void setDenseThreshold(int value)
Sets dense threshold.
int numberRows() const
Number of Rows after factorization.
double areaFactor() const
Whether larger areas needed.
int lastNumberPivots_
Pointer to network basis.
This deals with Factorization and Updates.
void goDenseOrSmall(int numberRows)
Go over to dense or small code if small enough.
CoinFactorization * coinFactorizationA_
Pointer to CoinFactorization.
double pivotTolerance() const
Pivot tolerance.
int goDenseThreshold_
Switch to dense if number rows <= this.
CoinBigIndex numberElementsL() const
Returns number in L area.
void messageLevel(int value)
Set level of detail of messages.
int denseThreshold() const
Gets dense threshold.
virtual void clearArrays()
Get rid of all memory.
void almostDestructor()
Delete all stuff (leaves as after CoinFactorization())
bool doStatistics_
To switch statistics on or off.
void setStatus(int value)
Sets status.
int sparseThreshold() const
get sparse threshold
void relaxAccuracyCheck(double value)
Allows change of pivot accuracy check 1.0 == none >1.0 relaxed.
void goSparse()
makes a row copy of L for speed and to allow very sparse problems
void maximumPivots(int value)
Set maximum number of pivots between factorizations.
void setDenseThreshold(int value)
Sets dense threshold.
double zeroTolerance() const
Zero tolerance.
int messageLevel() const
Level of detail of messages.
void relaxAccuracyCheck(double value)
Allows change of pivot accuracy check 1.0 == none >1.0 relaxed.
int isDenseOrSmall() const
Return 1 if dense code.
int messageLevel() const
Level of detail of messages.
int effectiveStartNumberU_
Pointer to network basis.
void setBiasLU(int value)
Total number of elements in factorization.
virtual int numberElements() const =0
Total number of elements in factorization.
This just implements CoinFactorization when an ClpMatrixBase object is passed.
int goOslThreshold_
Switch to osl if number rows <= this.
int pivots() const
Returns number of pivots since factorization.
void setForrestTomlin(bool value)
Returns status.