13#ifndef CoinWarmStartBasis_H
14#define CoinWarmStartBasis_H
353 const int st = (array[
i >> 2] >> ((
i & 3) << 1)) & 3;
446 const unsigned int *
const diffVals);
char statusToChar(CoinWarmStartBasis::Status status)
In an example Aleksandr Kazachkov sent to me, I noticed he was using code as above but with char - it...
CoinWarmStartBasis::Status charToStatus(char status)
Convert character to status.
\legal Copyright (C) 2000 – 2003, International Business Machines Corporation and others.
A ‘diff’ between two CoinWarmStartBasis objects.
unsigned int * difference_
Array of diff indices and diff values.
CoinWarmStartBasisDiff(const CoinWarmStartBasisDiff &cwsbd)
Copy constructor.
virtual CoinWarmStartDiff * clone() const
‘Virtual constructor’
CoinWarmStartBasisDiff(const CoinWarmStartBasis *rhs)
Constructor when full is smaller than diff!
virtual ~CoinWarmStartBasisDiff()
Destructor.
CoinWarmStartBasisDiff(int sze, const unsigned int *const diffNdxs, const unsigned int *const diffVals)
Standard constructor.
int sze_
Number of entries (and allocated capacity), in units of int.
CoinWarmStartBasisDiff()
Default constructor.
virtual CoinWarmStartBasisDiff & operator=(const CoinWarmStartBasisDiff &rhs)
Assignment.
The default COIN simplex (basis-oriented) warm start class.
virtual CoinWarmStartDiff * generateDiff(const CoinWarmStart *const oldCWS) const
Generate a ‘diff’ that can convert the warm start basis passed as a parameter to the warm start basis...
CoinWarmStartBasis(const CoinWarmStartBasis &ws)
Copy constructor.
const char * getArtificialStatus() const
const overload for getArtificialStatus()
int numStructural_
The number of structural variables.
virtual void compressRows(int tgtCnt, const int *tgts)
Delete a set of rows from the basis.
virtual CoinWarmStartBasis & operator=(const CoinWarmStartBasis &rhs)
Assignment.
bool fullBasis() const
Returns true if full basis (for debug)
int maxSize_
The maximum sise (in ints - actually 4*char) (so resize does not need to do new)
void setArtifStatus(int i, Status st)
Set the status of the specified artificial variable.
virtual void applyDiff(const CoinWarmStartDiff *const cwsdDiff)
Apply diff to this basis.
virtual void print() const
Prints in readable format (for debug)
virtual CoinWarmStart * clone() const
‘Virtual constructor’
int numberBasicStructurals() const
Return the number of basic structurals.
void setStatus(char *array, int i, CoinWarmStartBasis::Status st)
Set the status of the specified variable in the given status array.
CoinWarmStartBasis()
Default constructor.
Status getArtifStatus(int i) const
Return the status of the specified artificial variable.
virtual void resize(int newNumberRows, int newNumberColumns)
Set basis capacity; existing basis is maintained.
CoinTriple< int, int, int > XferEntry
Transfer vector entry for mergeBasis(const CoinWarmStartBasis*,const XferVec*,const XferVec*)
CoinWarmStartBasis::Status getStatus(const char *array, int i)
Get the status of the specified variable in the given status array.
int getNumArtificial() const
Return the number of artificial variables.
virtual void deleteColumns(int number, const int *which)
Delete a set of columns from the basis.
char * getStructuralStatus()
Return the status array for the structural variables.
virtual void deleteRows(int rawTgtCnt, const int *rawTgts)
Delete a set of rows from the basis.
const char * getStructuralStatus() const
const overload for getStructuralStatus()
char * structuralStatus_
The status of the structural variables.
int numArtificial_
The number of artificial variables.
int getNumStructural() const
Return the number of structural variables.
virtual void assignBasisStatus(int ns, int na, char *&sStat, char *&aStat)
Assign the status vectors to be the warm start information.
std::vector< XferEntry > XferVec
Transfer vector for mergeBasis(const CoinWarmStartBasis*,const XferVec*,const XferVec*)
void setStructStatus(int i, Status st)
Set the status of the specified structural variable.
char * getArtificialStatus()
As for getStructuralStatus , but returns the status array for the artificial variables.
const char * statusName(CoinWarmStartBasis::Status status)
Generate a print string for a status code.
Status
Enum for status of variables.
@ isFree
Nonbasic free variable.
@ superBasic
Not basic and not at bound.
@ atUpperBound
Nonbasic at upper bound.
@ atLowerBound
Nonbasic at lower bound.
virtual void setSize(int ns, int na)
Set basis capacity; existing basis is discarded.
virtual void mergeBasis(const CoinWarmStartBasis *src, const XferVec *xferRows, const XferVec *xferCols)
Merge entries from a source basis into this basis.
char * artificialStatus_
The status of the artificial variables.
Status getStructStatus(int i) const
Return the status of the specified structural variable.
bool fixFullBasis()
Returns true if full basis and fixes up (for debug)
virtual ~CoinWarmStartBasis()
Destructor.
CoinWarmStartBasis(int ns, int na, const char *sStat, const char *aStat)
Constructs a warm start object with the specified status vectors.
Abstract base class for warm start ‘diff’ objects.
Abstract base class for warm start information.