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8a9ab0eb | 1 | #ifndef ALISYMMATRIX_H |
2 | #define ALISYMMATRIX_H | |
3 | ||
4 | #include <string.h> | |
5 | #include <TObject.h> | |
6 | #include <TVectorD.h> | |
7 | #include "AliMatrixSq.h" | |
8 | ||
9 | ||
10 | ||
11 | class AliSymMatrix : public AliMatrixSq { | |
12 | // | |
13 | public: | |
14 | AliSymMatrix(); | |
15 | AliSymMatrix(Int_t size); | |
16 | AliSymMatrix(const AliSymMatrix &mat); | |
17 | virtual ~AliSymMatrix(); | |
18 | // | |
19 | void Clear(Option_t* option=""); | |
20 | void Reset(); | |
21 | // | |
22 | Int_t GetSize() const {return fNrowIndex;} | |
23 | Float_t GetDensity() const; | |
24 | AliSymMatrix& operator=(const AliSymMatrix& src); | |
25 | Double_t operator()(Int_t rown, Int_t coln) const; | |
26 | Double_t& operator()(Int_t rown, Int_t coln); | |
27 | // | |
28 | Double_t DiagElem(Int_t r) const {return (*(const AliSymMatrix*)this)(r,r);} | |
29 | Double_t& DiagElem(Int_t r) {return (*this)(r,r);} | |
30 | // | |
31 | void Print(Option_t* option="") const; | |
32 | void AddRows(int nrows=1); | |
33 | // | |
34 | void Scale(Double_t coeff); | |
35 | void MultiplyByVec(Double_t* vecIn, Double_t* vecOut) const; | |
36 | void MultiplyByVec(TVectorD &vecIn, TVectorD &vecOut) const; | |
37 | // | |
38 | // ---------------------------------- Dummy methods of MatrixBase | |
39 | virtual const Double_t *GetMatrixArray () const {return fElems;}; | |
40 | virtual Double_t *GetMatrixArray () {return (Double_t*)fElems;} | |
41 | virtual const Int_t *GetRowIndexArray() const {Error("GetRowIndexArray","Dummy"); return 0;}; | |
42 | virtual Int_t *GetRowIndexArray() {Error("GetRowIndexArray","Dummy"); return 0;}; | |
43 | virtual const Int_t *GetColIndexArray() const {Error("GetColIndexArray","Dummy"); return 0;}; | |
44 | virtual Int_t *GetColIndexArray() {Error("GetColIndexArray","Dummy"); return 0;}; | |
45 | virtual TMatrixDBase &SetRowIndexArray(Int_t *) {Error("SetRowIndexArray","Dummy"); return *this;} | |
46 | virtual TMatrixDBase &SetColIndexArray(Int_t *) {Error("SetColIndexArray","Dummy"); return *this;} | |
47 | virtual TMatrixDBase &GetSub(Int_t,Int_t,Int_t,Int_t,TMatrixDBase &,Option_t *) const {Error("GetSub","Dummy"); return *((TMatrixDBase*)this);} | |
48 | virtual TMatrixDBase &SetSub(Int_t,Int_t,const TMatrixDBase &) {Error("GetSub","Dummy"); return *this;} | |
49 | virtual TMatrixDBase &ResizeTo (Int_t,Int_t,Int_t) {Error("ResizeTo","Dummy"); return *this;} | |
50 | virtual TMatrixDBase &ResizeTo (Int_t,Int_t,Int_t,Int_t,Int_t) {Error("ResizeTo","Dummy"); return *this;} | |
51 | // | |
52 | // ----------------------------- Choleski methods ---------------------------------------- | |
53 | AliSymMatrix* DecomposeChol(); //Obtain Cholesky decomposition L matrix | |
54 | void InvertChol(AliSymMatrix* mchol); //Invert using provided Choleski decomposition | |
55 | Bool_t InvertChol(); //Invert | |
56 | Bool_t SolveChol(Double_t *brhs, Bool_t invert=kFALSE); | |
57 | Bool_t SolveChol(Double_t *brhs, Double_t *bsol,Bool_t invert=kFALSE); | |
58 | Bool_t SolveChol(TVectorD &brhs, Bool_t invert=kFALSE); | |
59 | Bool_t SolveChol(TVectorD &brhs, TVectorD& bsol,Bool_t invert=kFALSE); | |
60 | // | |
61 | int SolveSpmInv(double *vecB, Bool_t stabilize=kTRUE); | |
62 | ||
63 | protected: | |
64 | virtual Int_t GetIndex(Int_t row,Int_t col) const; | |
65 | Double_t GetEl(Int_t row, Int_t col) const {return operator()(row,col);} | |
66 | void SetEl(Int_t row, Int_t col,Double_t val) {operator()(row,col) = val;} | |
67 | // | |
68 | protected: | |
69 | Double_t* fElems; // Elements booked by constructor | |
70 | Double_t** fElemsAdd; // Elements (rows) added dynamicaly | |
71 | // | |
72 | static AliSymMatrix* fgBuffer; // buffer for fast solution | |
73 | static Int_t fgCopyCnt; // matrix copy counter | |
74 | ClassDef(AliSymMatrix,0) //Symmetric Matrix Class | |
75 | }; | |
76 | ||
77 | ||
78 | //___________________________________________________________ | |
79 | inline Int_t AliSymMatrix::GetIndex(Int_t row,Int_t col) const | |
80 | { | |
81 | // lower triangle is actually filled | |
82 | return ((row*(row+1))>>1) + col; | |
83 | } | |
84 | ||
85 | //___________________________________________________________ | |
86 | inline Double_t AliSymMatrix::operator()(Int_t row, Int_t col) const | |
87 | { | |
88 | // | |
89 | if (row<col) Swap(row,col); | |
90 | if (row>=fNrowIndex) return 0; | |
91 | return (const Double_t&) (row<fNcols ? fElems[GetIndex(row,col)] : (fElemsAdd[row-fNcols])[col]); | |
92 | } | |
93 | ||
94 | //___________________________________________________________ | |
95 | inline Double_t& AliSymMatrix::operator()(Int_t row, Int_t col) | |
96 | { | |
97 | if (row<col) Swap(row,col); | |
98 | if (row>=fNrowIndex) AddRows(row-fNrowIndex+1); | |
99 | return (row<fNcols ? fElems[GetIndex(row,col)] : (fElemsAdd[row-fNcols])[col]); | |
100 | } | |
101 | ||
102 | //___________________________________________________________ | |
103 | inline void AliSymMatrix::MultiplyByVec(TVectorD &vecIn, TVectorD &vecOut) const | |
104 | { | |
105 | MultiplyByVec(vecIn.GetMatrixArray(), vecOut.GetMatrixArray()); | |
106 | } | |
107 | ||
108 | //___________________________________________________________ | |
109 | inline void AliSymMatrix::Scale(Double_t coeff) | |
110 | { | |
111 | for (int i=fNrowIndex;i--;) for (int j=i;j--;) { double& el = operator()(i,j); if (el) el *= coeff;} | |
112 | } | |
113 | ||
114 | ||
115 | #endif |