Clp 1.17.6

- Main Page
- Related Pages
- Modules
- Namespaces
- Classes
- Files

- Class List
- Class Index
- Class Hierarchy
- Class Members

All Classes Namespaces Files Functions Variables Typedefs Enumerations Enumerator Friends Macros Groups Pages
List of all members
CoinOtherFactorization Class Referenceabstract

Abstract base class which also has some scalars so can be used from Dense or Simp. More...

`#include <CoinDenseFactorization.hpp>`

Inheritance diagram for CoinOtherFactorization:
[legend]

## Public Member Functions
Constructors and destructor and copy
| CoinOtherFactorization ()
| Default constructor. More...
| CoinOtherFactorization (const CoinOtherFactorization &other)
| Copy constructor. More...
virtual | ~CoinOtherFactorization ()
| Destructor. More...
CoinOtherFactorization & | operator= (const CoinOtherFactorization &other)
| = copy More...
virtual CoinOtherFactorization * | clone () const =0
| Clone. More...
general stuff such as status
int | status () const
| Returns status. More...
void | setStatus (int value)
| Sets status. More...
int | pivots () const
| Returns number of pivots since factorization. More...
void | setPivots (int value)
| Sets number of pivots since factorization. More...
void | setNumberRows (int value)
| Set number of Rows after factorization. More...
int | numberRows () const
| Number of Rows after factorization. More...
int | numberColumns () const
| Total number of columns in factorization. More...
int | numberGoodColumns () const
| Number of good columns in factorization. More...
void | relaxAccuracyCheck (double value)
| Allows change of pivot accuracy check 1.0 == none >1.0 relaxed. More...
double | getAccuracyCheck () const
int | maximumPivots () const
| Maximum number of pivots between factorizations. More...
virtual void | maximumPivots (int value)
| Set maximum pivots. More...
double | pivotTolerance () const
| Pivot tolerance. More...
void | pivotTolerance (double value)
double | zeroTolerance () const
| Zero tolerance. More...
void | zeroTolerance (double value)
double | slackValue () const
| Whether slack value is +1 or -1. More...
void | slackValue (double value)
virtual CoinFactorizationDouble * | elements () const
| Returns array to put basis elements in. More...
virtual int * | pivotRow () const
| Returns pivot row. More...
virtual CoinFactorizationDouble * | workArea () const
| Returns work area. More...
virtual int * | intWorkArea () const
| Returns int work area. More...
virtual int * | numberInRow () const
| Number of entries in each row. More...
virtual int * | numberInColumn () const
| Number of entries in each column. More...
virtual int * | starts () const
| Returns array to put basis starts in. More...
virtual int * | permuteBack () const
| Returns permute back. More...
int | solveMode () const
| Get solve mode e.g. More...
void | setSolveMode (int value)
| Set solve mode e.g. More...
virtual bool | wantsTableauColumn () const
| Returns true if wants tableauColumn in replaceColumn. More...
virtual void | setUsefulInformation (const int *info, int whereFrom)
| Useful information for factorization 0 - iteration number whereFrom is 0 for factorize and 1 for replaceColumn. More...
virtual void | clearArrays ()
| Get rid of all memory. More...
virtual general stuff such as permutation
virtual int * | indices () const =0
| Returns array to put basis indices in. More...
virtual int * | permute () const =0
| Returns permute in. More...
virtual int | numberElements () const =0
| Total number of elements in factorization. More...
Do factorization - public
virtual void | getAreas (int numberRows, int numberColumns, int maximumL, int maximumU)=0
| Gets space for a factorization. More...
virtual void | preProcess ()=0
| PreProcesses column ordered copy of basis. More...
virtual int | factor ()=0
| Does most of factorization returning status 0 - OK -99 - needs more memory -1 - singular - use numberGoodColumns and redo. More...
virtual void | postProcess (const int *sequence, int *pivotVariable)=0
| Does post processing on valid factorization - putting variables on correct rows. More...
virtual void | makeNonSingular (int *sequence, int numberColumns)=0
| Makes a non-singular basis by replacing variables. More...
rank one updates which do exist
virtual int | replaceColumn (CoinIndexedVector *regionSparse, int pivotRow, double pivotCheck, bool checkBeforeModifying=false, double acceptablePivot=1.0e-8)=0
| Replaces one Column to basis, returns 0=OK, 1=Probably OK, 2=singular, 3=no room If checkBeforeModifying is true will do all accuracy checks before modifying factorization. More...
various uses of factorization (return code number elements)
which user may want to know about
virtual int | updateColumnFT (CoinIndexedVector *regionSparse, CoinIndexedVector *regionSparse2, bool noPermute=false)=0
| Updates one column (FTRAN) from regionSparse2 Tries to do FT update number returned is negative if no room regionSparse starts as zero and is zero at end. More...
virtual int | updateColumn (CoinIndexedVector *regionSparse, CoinIndexedVector *regionSparse2, bool noPermute=false) const =0
| This version has same effect as above with FTUpdate==false so number returned is always >=0. More...
virtual int | updateTwoColumnsFT (CoinIndexedVector *regionSparse1, CoinIndexedVector *regionSparse2, CoinIndexedVector *regionSparse3, bool noPermute=false)=0
| does FTRAN on two columns More...
virtual int | updateColumnTranspose (CoinIndexedVector *regionSparse, CoinIndexedVector *regionSparse2) const =0
| Updates one column (BTRAN) from regionSparse2 regionSparse starts as zero and is zero at end Note - if regionSparse2 packed on input - will be packed on output. More...

## Protected Attributes
data
double | pivotTolerance_
| Pivot tolerance. More...
double | zeroTolerance_
| Zero tolerance. More...
double | slackValue_
| Whether slack value is +1 or -1. More...
double | relaxCheck_
| Relax check on accuracy in replaceColumn. More...
int | factorElements_
| Number of elements after factorization. More...
int | numberRows_
| Number of Rows in factorization. More...
int | numberColumns_
| Number of Columns in factorization. More...
int | numberGoodU_
| Number factorized in U (not row singletons) More...
int | maximumPivots_
| Maximum number of pivots before factorization. More...
int | numberPivots_
| Number pivots since last factorization. More...
int | status_
| Status of factorization. More...
int | maximumRows_
| Maximum rows ever (i.e. use to copy arrays etc) More...
int | maximumSpace_
| Maximum length of iterating area. More...
int * | pivotRow_
| Pivot row. More...
CoinFactorizationDouble * | elements_
| Elements of factorization and updates length is maxR*maxR+maxSpace will always be long enough so can have nR*nR ints in maxSpace. More...
CoinFactorizationDouble * | workArea_
| Work area of numberRows_. More...
int | solveMode_
| Solve mode e.g. More...

## Detailed Description

Abstract base class which also has some scalars so can be used from Dense or Simp.

Definition at line 26 of file CoinDenseFactorization.hpp.

## Constructor & Destructor Documentation

CoinOtherFactorization::CoinOtherFactorization | ( |  | ) |

Default constructor.

CoinOtherFactorization::CoinOtherFactorization | ( | const CoinOtherFactorization & | other | ) |

Copy constructor.

virtual CoinOtherFactorization::~CoinOtherFactorization | ( |  | ) |
| virtual

Destructor.

## Member Function Documentation

CoinOtherFactorization& CoinOtherFactorization::operator= | ( | const CoinOtherFactorization & | other | ) |

= copy

virtual CoinOtherFactorization* CoinOtherFactorization::clone | ( |  | ) | const
| pure virtual

Clone.

Implemented in CoinDenseFactorization, CoinOslFactorization, and CoinSimpFactorization.

int CoinOtherFactorization::status | ( |  | ) | const
| inline

Returns status.

Definition at line 48 of file CoinDenseFactorization.hpp.

void CoinOtherFactorization::setStatus | ( | int | value | ) |
| inline

Sets status.

Definition at line 53 of file CoinDenseFactorization.hpp.

int CoinOtherFactorization::pivots | ( |  | ) | const
| inline

Returns number of pivots since factorization.

Definition at line 58 of file CoinDenseFactorization.hpp.

void CoinOtherFactorization::setPivots | ( | int | value | ) |
| inline

Sets number of pivots since factorization.

Definition at line 63 of file CoinDenseFactorization.hpp.

void CoinOtherFactorization::setNumberRows | ( | int | value | ) |
| inline

Set number of Rows after factorization.

Definition at line 68 of file CoinDenseFactorization.hpp.

int CoinOtherFactorization::numberRows | ( |  | ) | const
| inline

Number of Rows after factorization.

Definition at line 73 of file CoinDenseFactorization.hpp.

int CoinOtherFactorization::numberColumns | ( |  | ) | const
| inline

Total number of columns in factorization.

Definition at line 78 of file CoinDenseFactorization.hpp.

int CoinOtherFactorization::numberGoodColumns | ( |  | ) | const
| inline

Number of good columns in factorization.

Definition at line 83 of file CoinDenseFactorization.hpp.

void CoinOtherFactorization::relaxAccuracyCheck | ( | double | value | ) |
| inline

Allows change of pivot accuracy check 1.0 == none >1.0 relaxed.

Definition at line 88 of file CoinDenseFactorization.hpp.

double CoinOtherFactorization::getAccuracyCheck | ( |  | ) | const
| inline

Definition at line 92 of file CoinDenseFactorization.hpp.

int CoinOtherFactorization::maximumPivots | ( |  | ) | const
| inline

Maximum number of pivots between factorizations.

Definition at line 97 of file CoinDenseFactorization.hpp.

virtual void CoinOtherFactorization::maximumPivots | ( | int | value | ) |
| virtual

Set maximum pivots.

Reimplemented in CoinOslFactorization.

double CoinOtherFactorization::pivotTolerance | ( |  | ) | const
| inline

Pivot tolerance.

Definition at line 105 of file CoinDenseFactorization.hpp.

void CoinOtherFactorization::pivotTolerance | ( | double | value | ) |

double CoinOtherFactorization::zeroTolerance | ( |  | ) | const
| inline

Zero tolerance.

Definition at line 111 of file CoinDenseFactorization.hpp.

void CoinOtherFactorization::zeroTolerance | ( | double | value | ) |

double CoinOtherFactorization::slackValue | ( |  | ) | const
| inline

Whether slack value is +1 or -1.

Definition at line 118 of file CoinDenseFactorization.hpp.

void CoinOtherFactorization::slackValue | ( | double | value | ) |

virtual CoinFactorizationDouble* CoinOtherFactorization::elements | ( |  | ) | const
| virtual

Returns array to put basis elements in.

Reimplemented in CoinOslFactorization.

virtual int* CoinOtherFactorization::pivotRow | ( |  | ) | const
| virtual

Returns pivot row.

Reimplemented in CoinOslFactorization.

virtual CoinFactorizationDouble* CoinOtherFactorization::workArea | ( |  | ) | const
| virtual

Returns work area.

Reimplemented in CoinOslFactorization.

virtual int* CoinOtherFactorization::intWorkArea | ( |  | ) | const
| virtual

Returns int work area.

Reimplemented in CoinOslFactorization.

virtual int* CoinOtherFactorization::numberInRow | ( |  | ) | const
| virtual

Number of entries in each row.

Reimplemented in CoinOslFactorization.

virtual int* CoinOtherFactorization::numberInColumn | ( |  | ) | const
| virtual

Number of entries in each column.

Reimplemented in CoinOslFactorization.

virtual int* CoinOtherFactorization::starts | ( |  | ) | const
| virtual

Returns array to put basis starts in.

Reimplemented in CoinOslFactorization.

virtual int* CoinOtherFactorization::permuteBack | ( |  | ) | const
| virtual

Returns permute back.

Reimplemented in CoinOslFactorization.

int CoinOtherFactorization::solveMode | ( |  | ) | const
| inline

Get solve mode e.g.

0 C++ code, 1 Lapack, 2 choose If 4 set then values pass if 8 set then has iterated

Definition at line 144 of file CoinDenseFactorization.hpp.

void CoinOtherFactorization::setSolveMode | ( | int | value | ) |
| inline

Set solve mode e.g.

0 C++ code, 1 Lapack, 2 choose If 4 set then values pass if 8 set then has iterated

Definition at line 152 of file CoinDenseFactorization.hpp.

virtual bool CoinOtherFactorization::wantsTableauColumn | ( |  | ) | const
| virtual

Returns true if wants tableauColumn in replaceColumn.

Reimplemented in CoinOslFactorization.

virtual void CoinOtherFactorization::setUsefulInformation | ( | const int * | info,
|  | int | whereFrom
| ) |  |
| virtual

Useful information for factorization 0 - iteration number whereFrom is 0 for factorize and 1 for replaceColumn.

Reimplemented in CoinOslFactorization.

virtual void CoinOtherFactorization::clearArrays | ( |  | ) |
| inline virtual

Get rid of all memory.

Reimplemented in CoinDenseFactorization, CoinOslFactorization, and CoinSimpFactorization.

Definition at line 164 of file CoinDenseFactorization.hpp.

virtual int* CoinOtherFactorization::indices | ( |  | ) | const
| pure virtual

Returns array to put basis indices in.

Implemented in CoinDenseFactorization, CoinOslFactorization, and CoinSimpFactorization.

virtual int* CoinOtherFactorization::permute | ( |  | ) | const
| pure virtual

Returns permute in.

Implemented in CoinDenseFactorization, CoinOslFactorization, and CoinSimpFactorization.

virtual int CoinOtherFactorization::numberElements | ( |  | ) | const
| pure virtual

Total number of elements in factorization.

Implemented in CoinDenseFactorization, CoinOslFactorization, and CoinSimpFactorization.

virtual void CoinOtherFactorization::getAreas | ( | int | numberRows,
|  | int | numberColumns,
|  | int | maximumL,
|  | int | maximumU
| ) |  |
| pure virtual

Gets space for a factorization.

Implemented in CoinDenseFactorization, CoinOslFactorization, and CoinSimpFactorization.

virtual void CoinOtherFactorization::preProcess | ( |  | ) |
| pure virtual

PreProcesses column ordered copy of basis.

Implemented in CoinDenseFactorization, CoinOslFactorization, and CoinSimpFactorization.

virtual int CoinOtherFactorization::factor | ( |  | ) |
| pure virtual

Does most of factorization returning status 0 - OK -99 - needs more memory -1 - singular - use numberGoodColumns and redo.

Implemented in CoinDenseFactorization, CoinOslFactorization, and CoinSimpFactorization.

virtual void CoinOtherFactorization::postProcess | ( | const int * | sequence,
|  | int * | pivotVariable
| ) |  |
| pure virtual

Does post processing on valid factorization - putting variables on correct rows.

Implemented in CoinDenseFactorization, CoinOslFactorization, and CoinSimpFactorization.

virtual void CoinOtherFactorization::makeNonSingular | ( | int * | sequence,
|  | int | numberColumns
| ) |  |
| pure virtual

Makes a non-singular basis by replacing variables.

Implemented in CoinDenseFactorization, CoinOslFactorization, and CoinSimpFactorization.

virtual int CoinOtherFactorization::replaceColumn | ( | CoinIndexedVector * | regionSparse,
|  | int | pivotRow,
|  | double | pivotCheck,
|  | bool | checkBeforeModifying = `false`,
|  | double | acceptablePivot = `1.0e-8`
| ) |  |
| pure virtual

Replaces one Column to basis, returns 0=OK, 1=Probably OK, 2=singular, 3=no room If checkBeforeModifying is true will do all accuracy checks before modifying factorization.

Whether to set this depends on speed considerations. You could just do this on first iteration after factorization and thereafter re-factorize partial update already in U

Implemented in CoinDenseFactorization, CoinOslFactorization, and CoinSimpFactorization.

virtual int CoinOtherFactorization::updateColumnFT | ( | CoinIndexedVector * | regionSparse,
|  | CoinIndexedVector * | regionSparse2,
|  | bool | noPermute = `false`
| ) |  |
| pure virtual

Updates one column (FTRAN) from regionSparse2 Tries to do FT update number returned is negative if no room regionSparse starts as zero and is zero at end.

Note - if regionSparse2 packed on input - will be packed on output

Implemented in CoinDenseFactorization, CoinOslFactorization, and CoinSimpFactorization.

virtual int CoinOtherFactorization::updateColumn | ( | CoinIndexedVector * | regionSparse,
|  | CoinIndexedVector * | regionSparse2,
|  | bool | noPermute = `false`
| ) |  | const
| pure virtual

This version has same effect as above with FTUpdate==false so number returned is always >=0.

Implemented in CoinDenseFactorization, CoinOslFactorization, and CoinSimpFactorization.

virtual int CoinOtherFactorization::updateTwoColumnsFT | ( | CoinIndexedVector * | regionSparse1,
|  | CoinIndexedVector * | regionSparse2,
|  | CoinIndexedVector * | regionSparse3,
|  | bool | noPermute = `false`
| ) |  |
| pure virtual

does FTRAN on two columns

Implemented in CoinDenseFactorization, CoinOslFactorization, and CoinSimpFactorization.

virtual int CoinOtherFactorization::updateColumnTranspose | ( | CoinIndexedVector * | regionSparse,
|  | CoinIndexedVector * | regionSparse2
| ) |  | const
| pure virtual

Updates one column (BTRAN) from regionSparse2 regionSparse starts as zero and is zero at end Note - if regionSparse2 packed on input - will be packed on output.

Implemented in CoinDenseFactorization, CoinOslFactorization, and CoinSimpFactorization.

## Member Data Documentation

double CoinOtherFactorization::pivotTolerance_
| protected

Pivot tolerance.

Definition at line 253 of file CoinDenseFactorization.hpp.

double CoinOtherFactorization::zeroTolerance_
| protected

Zero tolerance.

Definition at line 255 of file CoinDenseFactorization.hpp.

double CoinOtherFactorization::slackValue_
| protected

Whether slack value is +1 or -1.

Definition at line 258 of file CoinDenseFactorization.hpp.

double CoinOtherFactorization::relaxCheck_
| protected

Relax check on accuracy in replaceColumn.

Definition at line 265 of file CoinDenseFactorization.hpp.

int CoinOtherFactorization::factorElements_
| protected

Number of elements after factorization.

Definition at line 267 of file CoinDenseFactorization.hpp.

int CoinOtherFactorization::numberRows_
| protected

Number of Rows in factorization.

Definition at line 269 of file CoinDenseFactorization.hpp.

int CoinOtherFactorization::numberColumns_
| protected

Number of Columns in factorization.

Definition at line 271 of file CoinDenseFactorization.hpp.

int CoinOtherFactorization::numberGoodU_
| protected

Number factorized in U (not row singletons)

Definition at line 273 of file CoinDenseFactorization.hpp.

int CoinOtherFactorization::maximumPivots_
| protected

Maximum number of pivots before factorization.

Definition at line 275 of file CoinDenseFactorization.hpp.

int CoinOtherFactorization::numberPivots_
| protected

Number pivots since last factorization.

Definition at line 277 of file CoinDenseFactorization.hpp.

int CoinOtherFactorization::status_
| protected

Status of factorization.

Definition at line 279 of file CoinDenseFactorization.hpp.

int CoinOtherFactorization::maximumRows_
| protected

Maximum rows ever (i.e. use to copy arrays etc)

Definition at line 281 of file CoinDenseFactorization.hpp.

int CoinOtherFactorization::maximumSpace_
| protected

Maximum length of iterating area.

Definition at line 283 of file CoinDenseFactorization.hpp.

int* CoinOtherFactorization::pivotRow_
| protected

Pivot row.

Definition at line 285 of file CoinDenseFactorization.hpp.

CoinFactorizationDouble* CoinOtherFactorization::elements_
| protected

Elements of factorization and updates length is maxR*maxR+maxSpace will always be long enough so can have nR*nR ints in maxSpace.

Definition at line 290 of file CoinDenseFactorization.hpp.

CoinFactorizationDouble* CoinOtherFactorization::workArea_
| protected

Work area of numberRows_.

Definition at line 292 of file CoinDenseFactorization.hpp.

int CoinOtherFactorization::solveMode_
| protected

Solve mode e.g.

0 C++ code, 1 Lapack, 2 choose If 4 set then values pass if 8 set then has iterated

Definition at line 297 of file CoinDenseFactorization.hpp.

The documentation for this class was generated from the following file:

- /tmp/Clp-1.17.6/CoinUtils/src/CoinDenseFactorization.hpp