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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.

TDecompSparse (const TDecompSparse &another)
Copy constructor.

TDecompSparse (const TMatrixDSparse &a, Int_t verbose)
Constructor for matrix A .

TDecompSparse (Int_t nRows, Int_t nr_nonZeros, Int_t verbose)
Constructor for a matrix with nrows and unspecified number of columns .

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 .

virtual ~TDecompSparse ()

virtual Bool_t Decompose ()
Decomposition engine .

virtual void Det (Double_t &, Double_t &)
Matrix determinant det = d1*TMath::Power(2.,d2)

virtual Int_t GetNcols () const

virtual Int_t GetNrows () const

TDecompSparseoperator= (const TDecompSparse &source)
Assignment operator.

void Print (Option_t *opt="") const
Print class members.

virtual void SetMatrix (const TMatrixDSparse &a)
Set matrix to be decomposed .

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.

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.

TDecompBase (const TDecompBase &another)
Copy constructor.

virtual ~TDecompBase ()

virtual Double_t Condition ()
Matrix condition number.

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.

TDecompBaseoperator= (const TDecompBase &source)
Assignment operator.

Double_t SetTol (Double_t tol)

Public Member Functions inherited from TObject
TObject ()
TObject constructor.

TObject (const TObject &object)
TObject copy ctor.

virtual ~TObject ()
TObject destructor.

void AbstractMethod (const char *method) const
Use this method to implement an "abstract" method that you don't want to leave purely abstract.

Append graphics object to current pad.

virtual void Browse (TBrowser *b)
Browse object. May be overridden for another default action.

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.

virtual const char * ClassName () const
Returns name of class to which the object belongs.

virtual void Clear (Option_t *="")

virtual TObjectClone (const char *newname="") const
Make a clone of an object using the Streamer facility.

virtual Int_t Compare (const TObject *obj) const
Compare abstract method.

virtual void Copy (TObject &object) const
Copy this to obj.

virtual void Delete (Option_t *option="")
Delete this object.

virtual Int_t DistancetoPrimitive (Int_t px, Int_t py)
Computes distance from point (px,py) to the object.

virtual void Draw (Option_t *option="")
Default Draw method for all objects.

virtual void DrawClass () const
Draw class inheritance tree of the class to which this object belongs.

virtual TObjectDrawClone (Option_t *option="") const
Draw a clone of this object in the current selected pad for instance with: gROOT->SetSelectedPad(gPad).

virtual void Dump () const
Dump contents of object on stdout.

virtual void Error (const char *method, const char *msgfmt,...) const
Issue error message.

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.

virtual void Execute (TMethod *method, TObjArray *params, Int_t *error=0)
Execute method on this object with parameters stored in the TObjArray.

virtual void ExecuteEvent (Int_t event, Int_t px, Int_t py)
Execute action corresponding to an event at (px,py).

virtual void Fatal (const char *method, const char *msgfmt,...) const
Issue fatal error message.

virtual TObjectFindObject (const char *name) const
Must be redefined in derived classes.

virtual TObjectFindObject (const TObject *obj) const
Must be redefined in derived classes.

virtual Option_tGetDrawOption () const
Get option used by the graphics system to draw this object.

virtual const char * GetIconName () const
Returns mime type name of object.

virtual const char * GetName () const
Returns name of object.

virtual char * GetObjectInfo (Int_t px, Int_t py) const
Returns string containing info about the object at position (px,py).

virtual Option_tGetOption () const

virtual const char * GetTitle () const
Returns title of object.

virtual UInt_t GetUniqueID () const
Return the unique object id.

virtual Bool_t HandleTimer (TTimer *timer)
Execute action in response of a timer timing out.

virtual ULong_t Hash () const
Return hash value for this object.

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.

virtual void Info (const char *method, const char *msgfmt,...) const
Issue info message.

virtual Bool_t InheritsFrom (const char *classname) const
Returns kTRUE if object inherits from class "classname".

virtual Bool_t InheritsFrom (const TClass *cl) const
Returns kTRUE if object inherits from TClass cl.

virtual void Inspect () const
Dump contents of this object in a graphics canvas.

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).

virtual Bool_t IsFolder () const
Returns kTRUE in case object contains browsable objects (like containers or lists of other objects).

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.

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).

virtual Bool_t Notify ()
This method must be overridden to handle object notification.

void Obsolete (const char *method, const char *asOfVers, const char *removedFromVers) const
Use this method to declare a method obsolete.

void operator delete (void *ptr)
Operator delete.

void operator delete[] (void *ptr)
Operator delete [].

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.

virtual void Paint (Option_t *option="")
This method must be overridden if a class wants to paint itself.

virtual void Pop ()
Pop on object drawn in a pad to the top of the display list.

virtual Int_t Read (const char *name)
Read contents of object with specified name from the current directory.

virtual void RecursiveRemove (TObject *obj)
Recursively remove this object from a list.

void ResetBit (UInt_t f)

virtual void SaveAs (const char *filename="", Option_t *option="") const
Save this object in the file specified by filename.

virtual void SavePrimitive (std::ostream &out, Option_t *option="")
Save a primitive as a C++ statement(s) on output stream "out".

void SetBit (UInt_t f)

void SetBit (UInt_t f, Bool_t set)
Set or unset the user status bits as specified in f.

virtual void SetDrawOption (Option_t *option="")
Set drawing option for object.

virtual void SetUniqueID (UInt_t uid)
Set the unique object id.

virtual void SysError (const char *method, const char *msgfmt,...) const
Issue system error message.

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.

virtual void Warning (const char *method, const char *msgfmt,...) const
Issue warning message.

virtual Int_t Write (const char *name=0, Int_t option=0, Int_t bufsize=0)
Write this object to the current directory.

virtual Int_t Write (const char *name=0, Int_t option=0, Int_t bufsize=0) const
Write this object to the current directory.

## Protected Member Functions

Int_t ErrorFlag ()

virtual const TMatrixDBaseGetDecompMatrix () const

Double_t GetThresholdPivoting ()

Double_t GetTreatAsZero ()

Int_t IError ()

void InitParam ()
initializing control parameters

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).

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 .

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

static Int_t NonZerosUpperTriang (const TMatrixDSparse &a)
Static function, returning the number of non-zero entries in the upper triangular matrix .

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.

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.

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.

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

Public Types inherited from TObject
enum  {
kIsOnHeap = 0x01000000 , kNotDeleted = 0x02000000 , kZombie = 0x04000000 , kInconsistent = 0x08000000 ,
}

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.

static Bool_t GetObjectStat ()
Get status of object stat flag.

static void SetDtorOnly (void *obj)
Set destructor only flag.

static void SetObjectStat (Bool_t stat)
Turn on/off tracking of objects in the TObjectTable.

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)
}

Protected Types inherited from TObject
enum  { kOnlyPrepStep = BIT(3) }

#include <TDecompSparse.h>

Inheritance diagram for TDecompSparse:
[legend]

## ◆ 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.

## ◆ 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.

## ◆ 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:

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