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Reference Guide
TDecompSparse Class Reference

Sparse Symmetric Decomposition class.

Solve a sparse symmetric system of linear equations using a method based on Gaussian elimination as discussed in Duff and Reid, ACM Trans. Math. Software 9 (1983), 302-325.

Definition at line 43 of file TDecompSparse.h.

Public Member Functions

 TDecompSparse ()
 Default constructor. More...
 
 TDecompSparse (const TDecompSparse &another)
 Copy constructor. More...
 
 TDecompSparse (const TMatrixDSparse &a, Int_t verbose)
 Constructor for matrix A . More...
 
 TDecompSparse (Int_t nRows, Int_t nr_nonZeros, Int_t verbose)
 Constructor for a matrix with nrows and unspecified number of columns . More...
 
 TDecompSparse (Int_t row_lwb, Int_t row_upb, Int_t nr_nonZeros, Int_t verbose)
 Constructor for a matrix with row range, [row_lwb..row_upb] and unspecified column range . More...
 
virtual ~TDecompSparse ()
 
virtual Bool_t Decompose ()
 Decomposition engine . More...
 
virtual void Det (Double_t &, Double_t &)
 Matrix determinant det = d1*TMath::Power(2.,d2) More...
 
virtual Int_t GetNcols () const
 
virtual Int_t GetNrows () const
 
TDecompSparseoperator= (const TDecompSparse &source)
 Assignment operator. More...
 
void Print (Option_t *opt="") const
 Print class members. More...
 
virtual void SetMatrix (const TMatrixDSparse &a)
 Set matrix to be decomposed . More...
 
void SetVerbose (Int_t v)
 
virtual TVectorD Solve (const TVectorD &b, Bool_t &ok)
 
virtual Bool_t Solve (TMatrixDColumn &)
 
virtual Bool_t Solve (TVectorD &b)
 Solve Ax=b . Solution returned in b. More...
 
virtual TVectorD TransSolve (const TVectorD &b, Bool_t &ok)
 
virtual Bool_t TransSolve (TMatrixDColumn &)
 
virtual Bool_t TransSolve (TVectorD &b)
 
- Public Member Functions inherited from TDecompBase
 TDecompBase ()
 Default constructor. More...
 
 TDecompBase (const TDecompBase &another)
 Copy constructor. More...
 
virtual ~TDecompBase ()
 
virtual Double_t Condition ()
 Matrix condition number. More...
 
Int_t GetColLwb () const
 
Double_t GetCondition () const
 
Double_t GetDet1 () const
 
Double_t GetDet2 () const
 
Int_t GetRowLwb () const
 
Double_t GetTol () const
 
virtual Bool_t MultiSolve (TMatrixD &B)
 Solve set of equations with RHS in columns of B. More...
 
TDecompBaseoperator= (const TDecompBase &source)
 Assignment operator. More...
 
Double_t SetTol (Double_t tol)
 
- Public Member Functions inherited from TObject
 TObject ()
 TObject constructor. More...
 
 TObject (const TObject &object)
 TObject copy ctor. More...
 
virtual ~TObject ()
 TObject destructor. More...
 
void AbstractMethod (const char *method) const
 Use this method to implement an "abstract" method that you don't want to leave purely abstract. More...
 
virtual void AppendPad (Option_t *option="")
 Append graphics object to current pad. More...
 
virtual void Browse (TBrowser *b)
 Browse object. May be overridden for another default action. More...
 
ULong_t CheckedHash ()
 Check and record whether this class has a consistent Hash/RecursiveRemove setup (*) and then return the regular Hash value for this object. More...
 
virtual const char * ClassName () const
 Returns name of class to which the object belongs. More...
 
virtual void Clear (Option_t *="")
 
virtual TObjectClone (const char *newname="") const
 Make a clone of an object using the Streamer facility. More...
 
virtual Int_t Compare (const TObject *obj) const
 Compare abstract method. More...
 
virtual void Copy (TObject &object) const
 Copy this to obj. More...
 
virtual void Delete (Option_t *option="")
 Delete this object. More...
 
virtual Int_t DistancetoPrimitive (Int_t px, Int_t py)
 Computes distance from point (px,py) to the object. More...
 
virtual void Draw (Option_t *option="")
 Default Draw method for all objects. More...
 
virtual void DrawClass () const
 Draw class inheritance tree of the class to which this object belongs. More...
 
virtual TObjectDrawClone (Option_t *option="") const
 Draw a clone of this object in the current selected pad for instance with: gROOT->SetSelectedPad(gPad). More...
 
virtual void Dump () const
 Dump contents of object on stdout. More...
 
virtual void Error (const char *method, const char *msgfmt,...) const
 Issue error message. More...
 
virtual void Execute (const char *method, const char *params, Int_t *error=0)
 Execute method on this object with the given parameter string, e.g. More...
 
virtual void Execute (TMethod *method, TObjArray *params, Int_t *error=0)
 Execute method on this object with parameters stored in the TObjArray. More...
 
virtual void ExecuteEvent (Int_t event, Int_t px, Int_t py)
 Execute action corresponding to an event at (px,py). More...
 
virtual void Fatal (const char *method, const char *msgfmt,...) const
 Issue fatal error message. More...
 
virtual TObjectFindObject (const char *name) const
 Must be redefined in derived classes. More...
 
virtual TObjectFindObject (const TObject *obj) const
 Must be redefined in derived classes. More...
 
virtual Option_tGetDrawOption () const
 Get option used by the graphics system to draw this object. More...
 
virtual const char * GetIconName () const
 Returns mime type name of object. More...
 
virtual const char * GetName () const
 Returns name of object. More...
 
virtual char * GetObjectInfo (Int_t px, Int_t py) const
 Returns string containing info about the object at position (px,py). More...
 
virtual Option_tGetOption () const
 
virtual const char * GetTitle () const
 Returns title of object. More...
 
virtual UInt_t GetUniqueID () const
 Return the unique object id. More...
 
virtual Bool_t HandleTimer (TTimer *timer)
 Execute action in response of a timer timing out. More...
 
virtual ULong_t Hash () const
 Return hash value for this object. More...
 
Bool_t HasInconsistentHash () const
 Return true is the type of this object is known to have an inconsistent setup for Hash and RecursiveRemove (i.e. More...
 
virtual void Info (const char *method, const char *msgfmt,...) const
 Issue info message. More...
 
virtual Bool_t InheritsFrom (const char *classname) const
 Returns kTRUE if object inherits from class "classname". More...
 
virtual Bool_t InheritsFrom (const TClass *cl) const
 Returns kTRUE if object inherits from TClass cl. More...
 
virtual void Inspect () const
 Dump contents of this object in a graphics canvas. More...
 
void InvertBit (UInt_t f)
 
virtual Bool_t IsEqual (const TObject *obj) const
 Default equal comparison (objects are equal if they have the same address in memory). More...
 
virtual Bool_t IsFolder () const
 Returns kTRUE in case object contains browsable objects (like containers or lists of other objects). More...
 
R__ALWAYS_INLINE Bool_t IsOnHeap () const
 
virtual Bool_t IsSortable () const
 
R__ALWAYS_INLINE Bool_t IsZombie () const
 
virtual void ls (Option_t *option="") const
 The ls function lists the contents of a class on stdout. More...
 
void MayNotUse (const char *method) const
 Use this method to signal that a method (defined in a base class) may not be called in a derived class (in principle against good design since a child class should not provide less functionality than its parent, however, sometimes it is necessary). More...
 
virtual Bool_t Notify ()
 This method must be overridden to handle object notification. More...
 
void Obsolete (const char *method, const char *asOfVers, const char *removedFromVers) const
 Use this method to declare a method obsolete. More...
 
void operator delete (void *ptr)
 Operator delete. More...
 
void operator delete[] (void *ptr)
 Operator delete []. More...
 
voidoperator new (size_t sz)
 
voidoperator new (size_t sz, void *vp)
 
voidoperator new[] (size_t sz)
 
voidoperator new[] (size_t sz, void *vp)
 
TObjectoperator= (const TObject &rhs)
 TObject assignment operator. More...
 
virtual void Paint (Option_t *option="")
 This method must be overridden if a class wants to paint itself. More...
 
virtual void Pop ()
 Pop on object drawn in a pad to the top of the display list. More...
 
virtual Int_t Read (const char *name)
 Read contents of object with specified name from the current directory. More...
 
virtual void RecursiveRemove (TObject *obj)
 Recursively remove this object from a list. More...
 
void ResetBit (UInt_t f)
 
virtual void SaveAs (const char *filename="", Option_t *option="") const
 Save this object in the file specified by filename. More...
 
virtual void SavePrimitive (std::ostream &out, Option_t *option="")
 Save a primitive as a C++ statement(s) on output stream "out". More...
 
void SetBit (UInt_t f)
 
void SetBit (UInt_t f, Bool_t set)
 Set or unset the user status bits as specified in f. More...
 
virtual void SetDrawOption (Option_t *option="")
 Set drawing option for object. More...
 
virtual void SetUniqueID (UInt_t uid)
 Set the unique object id. More...
 
virtual void SysError (const char *method, const char *msgfmt,...) const
 Issue system error message. More...
 
R__ALWAYS_INLINE Bool_t TestBit (UInt_t f) const
 
Int_t TestBits (UInt_t f) const
 
virtual void UseCurrentStyle ()
 Set current style settings in this object This function is called when either TCanvas::UseCurrentStyle or TROOT::ForceStyle have been invoked. More...
 
virtual void Warning (const char *method, const char *msgfmt,...) const
 Issue warning message. More...
 
virtual Int_t Write (const char *name=0, Int_t option=0, Int_t bufsize=0)
 Write this object to the current directory. More...
 
virtual Int_t Write (const char *name=0, Int_t option=0, Int_t bufsize=0) const
 Write this object to the current directory. More...
 

Protected Member Functions

Int_t ErrorFlag ()
 
virtual const TMatrixDBaseGetDecompMatrix () const
 
Double_t GetThresholdPivoting ()
 
Double_t GetTreatAsZero ()
 
Int_t IError ()
 
void InitParam ()
 initializing control parameters More...
 
Int_t MinIntWorkspace ()
 
Int_t MinRealWorkspace ()
 
void SetThresholdPivoting (Double_t piv)
 
void SetTreatAsZero (Double_t tol)
 
- Protected Member Functions inherited from TDecompBase
Int_t Hager (Double_t &est, Int_t iter=5)
 
void ResetStatus ()
 
- Protected Member Functions inherited from TObject
virtual void DoError (int level, const char *location, const char *fmt, va_list va) const
 Interface to ErrorHandler (protected). More...
 
void MakeZombie ()
 

Static Protected Member Functions

static void CopyUpperTriang (const TMatrixDSparse &a, Double_t *b)
 Static function, copying the non-zero entries in the upper triangle to array b . More...
 
static void Factor (const Int_t n, const Int_t nz, TArrayI &Airn, TArrayI &Aicn, TArrayD &Aa, TArrayI &Aiw, TArrayI &Aikeep, const Int_t nsteps, Int_t &maxfrt, TArrayI &Aiw1, Int_t *icntl, Double_t *cntl, Int_t *info)
 Factorization routine, the workhorse for the decomposition step. More...
 
static void Factor_sub1 (const Int_t n, const Int_t nz, Int_t &nz1, Double_t *a, const Int_t la, Int_t *irn, Int_t *icn, Int_t *iw, const Int_t liw, Int_t *perm, Int_t *iw2, Int_t *icntl, Int_t *info)
 Help routine for factorization. More...
 
static void Factor_sub2 (const Int_t n, const Int_t nz, Double_t *a, const Int_t la, Int_t *iw, const Int_t liw, Int_t *perm, Int_t *nstk, const Int_t nsteps, Int_t &maxfrt, Int_t *nelim, Int_t *iw2, Int_t *icntl, Double_t *cntl, Int_t *info)
 Help routine for factorization. More...
 
static void Factor_sub3 (Double_t *a, Int_t *iw, Int_t &j1, Int_t &j2, const Int_t itop, const Int_t ireal, Int_t &ncmpbr, Int_t &ncmpbi)
 Help routine for factorization. More...
 
static Int_t IDiag (Int_t ix, Int_t iy)
 
static void InitPivot (const Int_t n, const Int_t nz, TArrayI &Airn, TArrayI &Aicn, TArrayI &Aiw, TArrayI &Aikeep, TArrayI &Aiw1, Int_t &nsteps, const Int_t iflag, Int_t *icntl, Double_t *cntl, Int_t *info, Double_t &ops)
 Setup Pivoting variables. More...
 
static void InitPivot_sub1 (const Int_t n, const Int_t nz, Int_t *irn, Int_t *icn, Int_t *iw, Int_t *ipe, Int_t *iq, Int_t *flag, Int_t &iwfr, Int_t *icntl, Int_t *info)
 Help routine for pivoting setup. More...
 
static void InitPivot_sub2 (const Int_t n, Int_t *ipe, Int_t *iw, const Int_t lw, Int_t &iwfr, Int_t *nv, Int_t *nxt, Int_t *lst, Int_t *ipd, Int_t *flag, const Int_t iovflo, Int_t &ncmpa, const Double_t fratio)
 Help routine for pivoting setup. More...
 
static void InitPivot_sub2a (const Int_t n, Int_t *ipe, Int_t *iw, const Int_t lw, Int_t &iwfr, Int_t &ncmpa)
 Help routine for pivoting setup. More...
 
static void InitPivot_sub3 (const Int_t n, const Int_t nz, Int_t *irn, Int_t *icn, Int_t *perm, Int_t *iw, Int_t *ipe, Int_t *iq, Int_t *flag, Int_t &iwfr, Int_t *icntl, Int_t *info)
 Help routine for pivoting setup. More...
 
static void InitPivot_sub4 (const Int_t n, Int_t *ipe, Int_t *iw, const Int_t lw, Int_t &iwfr, Int_t *ips, Int_t *ipv, Int_t *nv, Int_t *flag, Int_t &ncmpa)
 Help routine for pivoting setup. More...
 
static void InitPivot_sub5 (const Int_t n, Int_t *ipe, Int_t *nv, Int_t *ips, Int_t *ne, Int_t *na, Int_t *nd, Int_t &nsteps, const Int_t nemin)
 Help routine for pivoting setup. More...
 
static void InitPivot_sub6 (const Int_t n, const Int_t nz, Int_t *irn, Int_t *icn, Int_t *perm, Int_t *na, Int_t *ne, Int_t *nd, const Int_t nsteps, Int_t *lstki, Int_t *lstkr, Int_t *iw, Int_t *info, Double_t &ops)
 Help routine for pivoting setup. More...
 
static Int_t NonZerosUpperTriang (const TMatrixDSparse &a)
 Static function, returning the number of non-zero entries in the upper triangular matrix . More...
 
static void Solve (const Int_t n, TArrayD &Aa, TArrayI &Aiw, TArrayD &Aw, const Int_t maxfrt, TVectorD &b, TArrayI &Aiw1, const Int_t nsteps, Int_t *icntl, Int_t *info)
 Main routine for solving Ax=b. More...
 
static void Solve_sub1 (const Int_t n, Double_t *a, Int_t *iw, Double_t *w, Double_t *rhs, Int_t *iw2, const Int_t nblk, Int_t &latop, Int_t *icntl)
 Help routine for solving. More...
 
static void Solve_sub2 (const Int_t n, Double_t *a, Int_t *iw, Double_t *w, Double_t *rhs, Int_t *iw2, const Int_t nblk, const Int_t latop, Int_t *icntl)
 Help routine for solving. More...
 
- Static Protected Member Functions inherited from TDecompBase
static void DiagProd (const TVectorD &diag, Double_t tol, Double_t &d1, Double_t &d2)
 

Protected Attributes

TMatrixDSparse fA
 
Double_t fCntl [6]
 
TArrayI fColFact
 
TArrayD fFact
 
Int_t fIcntl [31]
 
TArrayI fIkeep
 
Int_t fInfo [21]
 
Double_t fIPessimism
 
TArrayI fIw
 
TArrayI fIw1
 
TArrayI fIw2
 
Int_t fMaxfrt
 
Int_t fNnonZeros
 
Int_t fNrows
 
Int_t fNsteps
 
Double_t fPrecision
 
TArrayI fRowFact
 
Double_t fRPessimism
 
Int_t fVerbose
 
TArrayD fW
 
- Protected Attributes inherited from TDecompBase
Int_t fColLwb
 
Double_t fCondition
 
Double_t fDet1
 
Double_t fDet2
 
Int_t fRowLwb
 
Double_t fTol
 

Additional Inherited Members

- Public Types inherited from TObject
enum  {
  kIsOnHeap = 0x01000000, kNotDeleted = 0x02000000, kZombie = 0x04000000, kInconsistent = 0x08000000,
  kBitMask = 0x00ffffff
}
 
enum  { kSingleKey = BIT(0), kOverwrite = BIT(1), kWriteDelete = BIT(2) }
 
enum  EDeprecatedStatusBits { kObjInCanvas = BIT(3) }
 
enum  EStatusBits {
  kCanDelete = BIT(0), kMustCleanup = BIT(3), kIsReferenced = BIT(4), kHasUUID = BIT(5),
  kCannotPick = BIT(6), kNoContextMenu = BIT(8), kInvalidObject = BIT(13)
}
 
- Static Public Member Functions inherited from TObject
static Long_t GetDtorOnly ()
 Return destructor only flag. More...
 
static Bool_t GetObjectStat ()
 Get status of object stat flag. More...
 
static void SetDtorOnly (void *obj)
 Set destructor only flag. More...
 
static void SetObjectStat (Bool_t stat)
 Turn on/off tracking of objects in the TObjectTable. More...
 
- Protected Types inherited from TDecompBase
enum  { kWorkMax = 100 }
 
enum  EMatrixDecompStat {
  kInit = BIT(14), kPatternSet = BIT(15), kValuesSet = BIT(16), kMatrixSet = BIT(17),
  kDecomposed = BIT(18), kDetermined = BIT(19), kCondition = BIT(20), kSingular = BIT(21)
}
 

#include <TDecompSparse.h>

Inheritance diagram for TDecompSparse:
[legend]

Constructor & Destructor Documentation

◆ TDecompSparse() [1/5]

TDecompSparse::TDecompSparse ( )

Default constructor.

Definition at line 30 of file TDecompSparse.cxx.

◆ TDecompSparse() [2/5]

TDecompSparse::TDecompSparse ( Int_t  nRows,
Int_t  nr_nonZeros,
Int_t  verbose 
)

Constructor for a matrix with nrows and unspecified number of columns .

nr_nonZeros is the total number of non-zero entries in the matrix .

Definition at line 41 of file TDecompSparse.cxx.

◆ TDecompSparse() [3/5]

TDecompSparse::TDecompSparse ( Int_t  row_lwb,
Int_t  row_upb,
Int_t  nr_nonZeros,
Int_t  verbose 
)

Constructor for a matrix with row range, [row_lwb..row_upb] and unspecified column range .

nr_nonZeros is the total number of non-zero entries in the matrix .

Definition at line 67 of file TDecompSparse.cxx.

◆ TDecompSparse() [4/5]

TDecompSparse::TDecompSparse ( const TMatrixDSparse a,
Int_t  verbose 
)

Constructor for matrix A .

Definition at line 94 of file TDecompSparse.cxx.

◆ TDecompSparse() [5/5]

TDecompSparse::TDecompSparse ( const TDecompSparse another)

Copy constructor.

Definition at line 107 of file TDecompSparse.cxx.

◆ ~TDecompSparse()

virtual TDecompSparse::~TDecompSparse ( )
inlinevirtual

Definition at line 148 of file TDecompSparse.h.

Member Function Documentation

◆ CopyUpperTriang()

void TDecompSparse::CopyUpperTriang ( const TMatrixDSparse a,
Double_t b 
)
staticprotected

Static function, copying the non-zero entries in the upper triangle to array b .

User should allocate enough memory for array b .

Definition at line 139 of file TDecompSparse.cxx.

◆ Decompose()

Bool_t TDecompSparse::Decompose ( )
virtual

Decomposition engine .

If the decomposition succeeds, bit kDecomposed is set .

Implements TDecompBase.

Definition at line 234 of file TDecompSparse.cxx.

◆ Det()

virtual void TDecompSparse::Det ( Double_t d1,
Double_t d2 
)
inlinevirtual

Matrix determinant det = d1*TMath::Power(2.,d2)

Reimplemented from TDecompBase.

Definition at line 169 of file TDecompSparse.h.

◆ ErrorFlag()

Int_t TDecompSparse::ErrorFlag ( )
inlineprotected

Definition at line 124 of file TDecompSparse.h.

◆ Factor()

void TDecompSparse::Factor ( const Int_t  n,
const Int_t  nz,
TArrayI Airn,
TArrayI Aicn,
TArrayD Aa,
TArrayI Aiw,
TArrayI Aikeep,
const Int_t  nsteps,
Int_t maxfrt,
TArrayI Aiw1,
Int_t icntl,
Double_t cntl,
Int_t info 
)
staticprotected

Factorization routine, the workhorse for the decomposition step.

Definition at line 581 of file TDecompSparse.cxx.

◆ Factor_sub1()

void TDecompSparse::Factor_sub1 ( const Int_t  n,
const Int_t  nz,
Int_t nz1,
Double_t a,
const Int_t  la,
Int_t irn,
Int_t icn,
Int_t iw,
const Int_t  liw,
Int_t perm,
Int_t iw2,
Int_t icntl,
Int_t info 
)
staticprotected

Help routine for factorization.

Definition at line 1741 of file TDecompSparse.cxx.

◆ Factor_sub2()

void TDecompSparse::Factor_sub2 ( const Int_t  n,
const Int_t  nz,
Double_t a,
const Int_t  la,
Int_t iw,
const Int_t  liw,
Int_t perm,
Int_t nstk,
const Int_t  nsteps,
Int_t maxfrt,
Int_t nelim,
Int_t iw2,
Int_t icntl,
Double_t cntl,
Int_t info 
)
staticprotected

Help routine for factorization.

Definition at line 1883 of file TDecompSparse.cxx.

◆ Factor_sub3()

void TDecompSparse::Factor_sub3 ( Double_t a,
Int_t iw,
Int_t j1,
Int_t j2,
const Int_t  itop,
const Int_t  ireal,
Int_t ncmpbr,
Int_t ncmpbi 
)
staticprotected

Help routine for factorization.

Definition at line 2389 of file TDecompSparse.cxx.

◆ GetDecompMatrix()

virtual const TMatrixDBase& TDecompSparse::GetDecompMatrix ( ) const
inlineprotectedvirtual

Implements TDecompBase.

Definition at line 139 of file TDecompSparse.h.

◆ GetNcols()

virtual Int_t TDecompSparse::GetNcols ( ) const
inlinevirtual

Implements TDecompBase.

Definition at line 155 of file TDecompSparse.h.

◆ GetNrows()

virtual Int_t TDecompSparse::GetNrows ( ) const
inlinevirtual

Implements TDecompBase.

Definition at line 154 of file TDecompSparse.h.

◆ GetThresholdPivoting()

Double_t TDecompSparse::GetThresholdPivoting ( )
inlineprotected

Definition at line 130 of file TDecompSparse.h.

◆ GetTreatAsZero()

Double_t TDecompSparse::GetTreatAsZero ( )
inlineprotected

Definition at line 131 of file TDecompSparse.h.

◆ IDiag()

static Int_t TDecompSparse::IDiag ( Int_t  ix,
Int_t  iy 
)
inlinestaticprotected

Definition at line 119 of file TDecompSparse.h.

◆ IError()

Int_t TDecompSparse::IError ( )
inlineprotected

Definition at line 121 of file TDecompSparse.h.

◆ InitParam()

void TDecompSparse::InitParam ( )
protected

initializing control parameters

Definition at line 413 of file TDecompSparse.cxx.

◆ InitPivot()

void TDecompSparse::InitPivot ( const Int_t  n,
const Int_t  nz,
TArrayI Airn,
TArrayI Aicn,
TArrayI Aiw,
TArrayI Aikeep,
TArrayI Aiw1,
Int_t nsteps,
const Int_t  iflag,
Int_t icntl,
Double_t cntl,
Int_t info,
Double_t ops 
)
staticprotected

Setup Pivoting variables.

Definition at line 470 of file TDecompSparse.cxx.

◆ InitPivot_sub1()

void TDecompSparse::InitPivot_sub1 ( const Int_t  n,
const Int_t  nz,
Int_t irn,
Int_t icn,
Int_t iw,
Int_t ipe,
Int_t iq,
Int_t flag,
Int_t iwfr,
Int_t icntl,
Int_t info 
)
staticprotected

Help routine for pivoting setup.

Definition at line 836 of file TDecompSparse.cxx.

◆ InitPivot_sub2()

void TDecompSparse::InitPivot_sub2 ( const Int_t  n,
Int_t ipe,
Int_t iw,
const Int_t  lw,
Int_t iwfr,
Int_t nv,
Int_t nxt,
Int_t lst,
Int_t ipd,
Int_t flag,
const Int_t  iovflo,
Int_t ncmpa,
const Double_t  fratio 
)
staticprotected

Help routine for pivoting setup.

Definition at line 975 of file TDecompSparse.cxx.

◆ InitPivot_sub2a()

void TDecompSparse::InitPivot_sub2a ( const Int_t  n,
Int_t ipe,
Int_t iw,
const Int_t  lw,
Int_t iwfr,
Int_t ncmpa 
)
staticprotected

Help routine for pivoting setup.

Definition at line 1305 of file TDecompSparse.cxx.

◆ InitPivot_sub3()

void TDecompSparse::InitPivot_sub3 ( const Int_t  n,
const Int_t  nz,
Int_t irn,
Int_t icn,
Int_t perm,
Int_t iw,
Int_t ipe,
Int_t iq,
Int_t flag,
Int_t iwfr,
Int_t icntl,
Int_t info 
)
staticprotected

Help routine for pivoting setup.

Definition at line 1349 of file TDecompSparse.cxx.

◆ InitPivot_sub4()

void TDecompSparse::InitPivot_sub4 ( const Int_t  n,
Int_t ipe,
Int_t iw,
const Int_t  lw,
Int_t iwfr,
Int_t ips,
Int_t ipv,
Int_t nv,
Int_t flag,
Int_t ncmpa 
)
staticprotected

Help routine for pivoting setup.

Definition at line 1471 of file TDecompSparse.cxx.

◆ InitPivot_sub5()

void TDecompSparse::InitPivot_sub5 ( const Int_t  n,
Int_t ipe,
Int_t nv,
Int_t ips,
Int_t ne,
Int_t na,
Int_t nd,
Int_t nsteps,
const Int_t  nemin 
)
staticprotected

Help routine for pivoting setup.

Definition at line 1548 of file TDecompSparse.cxx.

◆ InitPivot_sub6()

void TDecompSparse::InitPivot_sub6 ( const Int_t  n,
const Int_t  nz,
Int_t irn,
Int_t icn,
Int_t perm,
Int_t na,
Int_t ne,
Int_t nd,
const Int_t  nsteps,
Int_t lstki,
Int_t lstkr,
Int_t iw,
Int_t info,
Double_t ops 
)
staticprotected

Help routine for pivoting setup.

Definition at line 1637 of file TDecompSparse.cxx.

◆ MinIntWorkspace()

Int_t TDecompSparse::MinIntWorkspace ( )
inlineprotected

Definition at line 123 of file TDecompSparse.h.

◆ MinRealWorkspace()

Int_t TDecompSparse::MinRealWorkspace ( )
inlineprotected

Definition at line 122 of file TDecompSparse.h.

◆ NonZerosUpperTriang()

Int_t TDecompSparse::NonZerosUpperTriang ( const TMatrixDSparse a)
staticprotected

Static function, returning the number of non-zero entries in the upper triangular matrix .

Definition at line 115 of file TDecompSparse.cxx.

◆ operator=()

TDecompSparse & TDecompSparse::operator= ( const TDecompSparse source)

Assignment operator.

Definition at line 2702 of file TDecompSparse.cxx.

◆ Print()

void TDecompSparse::Print ( Option_t opt = "") const
virtual

Print class members.

Reimplemented from TDecompBase.

Definition at line 2686 of file TDecompSparse.cxx.

◆ SetMatrix()

void TDecompSparse::SetMatrix ( const TMatrixDSparse a)
virtual

Set matrix to be decomposed .

Definition at line 161 of file TDecompSparse.cxx.

◆ SetThresholdPivoting()

void TDecompSparse::SetThresholdPivoting ( Double_t  piv)
inlineprotected

Definition at line 136 of file TDecompSparse.h.

◆ SetTreatAsZero()

void TDecompSparse::SetTreatAsZero ( Double_t  tol)
inlineprotected

Definition at line 137 of file TDecompSparse.h.

◆ SetVerbose()

void TDecompSparse::SetVerbose ( Int_t  v)
inline

Definition at line 150 of file TDecompSparse.h.

◆ Solve() [1/4]

void TDecompSparse::Solve ( const Int_t  n,
TArrayD Aa,
TArrayI Aiw,
TArrayD Aw,
const Int_t  maxfrt,
TVectorD b,
TArrayI Aiw1,
const Int_t  nsteps,
Int_t icntl,
Int_t info 
)
staticprotected

Main routine for solving Ax=b.

Definition at line 738 of file TDecompSparse.cxx.

◆ Solve() [2/4]

virtual TVectorD TDecompSparse::Solve ( const TVectorD b,
Bool_t ok 
)
inlinevirtual

Implements TDecompBase.

Definition at line 161 of file TDecompSparse.h.

◆ Solve() [3/4]

virtual Bool_t TDecompSparse::Solve ( TMatrixDColumn )
inlinevirtual

Implements TDecompBase.

Definition at line 162 of file TDecompSparse.h.

◆ Solve() [4/4]

Bool_t TDecompSparse::Solve ( TVectorD b)
virtual

Solve Ax=b . Solution returned in b.

Implements TDecompBase.

Definition at line 341 of file TDecompSparse.cxx.

◆ Solve_sub1()

void TDecompSparse::Solve_sub1 ( const Int_t  n,
Double_t a,
Int_t iw,
Double_t w,
Double_t rhs,
Int_t iw2,
const Int_t  nblk,
Int_t latop,
Int_t icntl 
)
staticprotected

Help routine for solving.

Definition at line 2423 of file TDecompSparse.cxx.

◆ Solve_sub2()

void TDecompSparse::Solve_sub2 ( const Int_t  n,
Double_t a,
Int_t iw,
Double_t w,
Double_t rhs,
Int_t iw2,
const Int_t  nblk,
const Int_t  latop,
Int_t icntl 
)
staticprotected

Help routine for solving.

Definition at line 2553 of file TDecompSparse.cxx.

◆ TransSolve() [1/3]

virtual TVectorD TDecompSparse::TransSolve ( const TVectorD b,
Bool_t ok 
)
inlinevirtual

Implements TDecompBase.

Definition at line 165 of file TDecompSparse.h.

◆ TransSolve() [2/3]

virtual Bool_t TDecompSparse::TransSolve ( TMatrixDColumn )
inlinevirtual

Implements TDecompBase.

Definition at line 166 of file TDecompSparse.h.

◆ TransSolve() [3/3]

virtual Bool_t TDecompSparse::TransSolve ( TVectorD b)
inlinevirtual

Implements TDecompBase.

Definition at line 164 of file TDecompSparse.h.

Member Data Documentation

◆ fA

TMatrixDSparse TDecompSparse::fA
protected

Definition at line 69 of file TDecompSparse.h.

◆ fCntl

Double_t TDecompSparse::fCntl[6]
protected

Definition at line 50 of file TDecompSparse.h.

◆ fColFact

TArrayI TDecompSparse::fColFact
protected

Definition at line 75 of file TDecompSparse.h.

◆ fFact

TArrayD TDecompSparse::fFact
protected

Definition at line 72 of file TDecompSparse.h.

◆ fIcntl

Int_t TDecompSparse::fIcntl[31]
protected

Definition at line 49 of file TDecompSparse.h.

◆ fIkeep

TArrayI TDecompSparse::fIkeep
protected

Definition at line 57 of file TDecompSparse.h.

◆ fInfo

Int_t TDecompSparse::fInfo[21]
protected

Definition at line 51 of file TDecompSparse.h.

◆ fIPessimism

Double_t TDecompSparse::fIPessimism
protected

Definition at line 65 of file TDecompSparse.h.

◆ fIw

TArrayI TDecompSparse::fIw
protected

Definition at line 58 of file TDecompSparse.h.

◆ fIw1

TArrayI TDecompSparse::fIw1
protected

Definition at line 59 of file TDecompSparse.h.

◆ fIw2

TArrayI TDecompSparse::fIw2
protected

Definition at line 60 of file TDecompSparse.h.

◆ fMaxfrt

Int_t TDecompSparse::fMaxfrt
protected

Definition at line 62 of file TDecompSparse.h.

◆ fNnonZeros

Int_t TDecompSparse::fNnonZeros
protected

Definition at line 71 of file TDecompSparse.h.

◆ fNrows

Int_t TDecompSparse::fNrows
protected

Definition at line 70 of file TDecompSparse.h.

◆ fNsteps

Int_t TDecompSparse::fNsteps
protected

Definition at line 61 of file TDecompSparse.h.

◆ fPrecision

Double_t TDecompSparse::fPrecision
protected

Definition at line 53 of file TDecompSparse.h.

◆ fRowFact

TArrayI TDecompSparse::fRowFact
protected

Definition at line 74 of file TDecompSparse.h.

◆ fRPessimism

Double_t TDecompSparse::fRPessimism
protected

Definition at line 66 of file TDecompSparse.h.

◆ fVerbose

Int_t TDecompSparse::fVerbose
protected

Definition at line 47 of file TDecompSparse.h.

◆ fW

TArrayD TDecompSparse::fW
protected

Definition at line 63 of file TDecompSparse.h.

Libraries for TDecompSparse:
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The documentation for this class was generated from the following files: