library: libMatrix
#include "TVectorD.h" |
TVectorD
class description - source file - inheritance tree (.pdf)
protected:
void Allocate(Int_t nrows, Int_t row_lwb = 0, Int_t init = 0)
void Delete_m(Int_t size, Double_t*&)
Int_t Memcpy_m(Double_t* newp, const Double_t* oldp, Int_t copySize, Int_t newSize, Int_t oldSize)
Double_t* New_m(Int_t size)
public:
TVectorD()
TVectorD(Int_t n)
TVectorD(Int_t lwb, Int_t upb)
TVectorD(Int_t n, const Double_t* elements)
TVectorD(Int_t lwb, Int_t upb, const Double_t* elements)
TVectorD(const TVectorD& another)
TVectorD(const TVectorF& another)
TVectorD(const TMatrixDRow_const& mr)
TVectorD(const TMatrixDColumn_const& mc)
TVectorD(const TMatrixDDiag_const& md)
TVectorD GetSub(Int_t row_lwb, Int_t row_upb, Option_t* option = "S") const
virtual ~TVectorD()
TVectorD& Abs()
void AddSomeConstant(Double_t val, const TVectorD& select)
TVectorD& Apply(const TElementActionD& action)
TVectorD& Apply(const TElementPosActionD& action)
static TClass* Class()
virtual void Clear(Option_t*)
virtual void Draw(Option_t* option)
Int_t GetLwb() const
Double_t* GetMatrixArray()
const Double_t* GetMatrixArray() const
Int_t GetNoElements() const
Int_t GetNrows() const
TVectorD& GetSub(Int_t row_lwb, Int_t row_upb, TVectorD& target, Option_t* option = "S") const
Int_t GetUpb() const
void Invalidate()
TVectorD& Invert()
virtual TClass* IsA() const
Bool_t IsOwner() const
Bool_t IsValid() const
void MakeValid()
Bool_t MatchesNonZeroPattern(const TVectorD& select)
Double_t Max() const
Double_t Min() const
Int_t NonZeros() const
Double_t Norm1() const
Double_t Norm2Sqr() const
Double_t NormInf() const
Bool_t operator!=(Double_t val) const
const Double_t& operator()(Int_t index) const
Double_t& operator()(Int_t index)
TVectorD& operator*=(Double_t val)
TVectorD& operator*=(const TMatrixD& a)
TVectorD& operator*=(const TMatrixDSym& a)
TVectorD& operator*=(const TMatrixDSparse& a)
TVectorD& operator+=(Double_t val)
TVectorD& operator+=(const TVectorD& source)
TVectorD& operator-=(Double_t val)
TVectorD& operator-=(const TVectorD& source)
Bool_t operator<(Double_t val) const
Bool_t operator<=(Double_t val) const
TVectorD& operator=(const TVectorD& source)
TVectorD& operator=(const TVectorF& source)
TVectorD& operator=(const TMatrixDRow_const& mr)
TVectorD& operator=(const TMatrixDColumn_const& mc)
TVectorD& operator=(const TMatrixDDiag_const& md)
TVectorD& operator=(const TMatrixDSparseRow_const& md)
TVectorD& operator=(const TMatrixDSparseDiag_const& md)
TVectorD& operator=(Double_t val)
Bool_t operator==(Double_t val) const
Bool_t operator>(Double_t val) const
Bool_t operator>=(Double_t val) const
const Double_t& operator[](Int_t index) const
Double_t& operator[](Int_t index)
virtual void Print(Option_t* option) const
void Randomize(Double_t alpha, Double_t beta, Double_t& seed)
TVectorD& ResizeTo(Int_t lwb, Int_t upb)
TVectorD& ResizeTo(Int_t n)
TVectorD& ResizeTo(const TVectorD& v)
TVectorD& SelectNonZeros(const TVectorD& select)
void SetElements(const Double_t* elements)
TVectorD& SetSub(Int_t row_lwb, const TVectorD& source)
TVectorD& Shift(Int_t row_shift)
virtual void ShowMembers(TMemberInspector& insp, char* parent)
Bool_t SomePositive(const TVectorD& select)
TVectorD& Sqr()
TVectorD& Sqrt()
virtual void Streamer(TBuffer& b)
void StreamerNVirtual(TBuffer& b)
Double_t Sum() const
TVectorD& Use(Int_t n, Double_t* data)
TVectorD& Use(Int_t lwb, Int_t upb, Double_t* data)
TVectorD& Use(TVectorD& v)
TVectorD& Zero()
protected:
Int_t fNrows number of rows
Int_t fRowLwb lower bound of the row index
Double_t* fElements [fNrows] elements themselves
Double_t fDataStack[5] ! data container
Bool_t fIsOwner !default kTRUE, when Use array kFALSE
public:
static const enum TVectorD:: kSizeMax
TVectorD
Implementation of Vectors in the linear algebra package
Unless otherwise specified, vector indices always start with 0,
spanning up to the specified limit-1.
For (n) vectors where n <= kSizeMax (5 currently) storage space is
available on the stack, thus avoiding expensive allocation/
deallocation of heap space . However, this introduces of course
kSizeMax overhead for each vector object . If this is an issue
recompile with a new appropriate value (>=0) for kSizeMax
Another way to assign and store vector data is through Use
see for instance stress_linalg.cxx file .
Note that Constructors/assignments exists for all different matrix
views
For usage examples see $ROOTSYS/test/stress_linalg.cxx
void Delete_m(Int_t size,Double_t *&m)
Double_t* New_m(Int_t size)
Int_t Memcpy_m(Double_t *newp,const Double_t *oldp,Int_t copySize,
Int_t newSize,Int_t oldSize)
void Allocate(Int_t nrows,Int_t row_lwb,Int_t init)
Allocate new vector. Arguments are number of rows and row
lowerbound (0 default).
TVectorD(Int_t n)
TVectorD(Int_t lwb,Int_t upb)
TVectorD(Int_t n,const Double_t *elements)
TVectorD(Int_t lwb,Int_t upb,const Double_t *elements)
TVectorD(const TVectorD &another) : TObject(another)
TVectorD(const TVectorF &another) : TObject(another)
TVectorD(const TMatrixDRow_const &mr) : TObject()
TVectorD(const TMatrixDColumn_const &mc) : TObject()
TVectorD(const TMatrixDDiag_const &md) : TObject()
TVectorD(Int_t lwb,Int_t upb,Double_t va_(iv1), ...)
Make a vector and assign initial values. Argument list should contain
Double_t values to assign to vector elements. The list must be
terminated by the string "END". Example:
TVectorD foo(1,3,0.0,1.0,1.5,"END");
TVectorD& ResizeTo(Int_t lwb,Int_t upb)
Resize the vector to [lwb:upb] .
New dynamic elemenst are created, the overlapping part of the old ones are
copied to the new structures, then the old elements are deleleted.
TVectorD& Use(Int_t lwb,Int_t upb,Double_t *data)
TVectorD& GetSub(Int_t row_lwb,Int_t row_upb,TVectorD &target,Option_t *option) const
Get subvector [row_lwb..row_upb]; The indexing range of the
returned vector depends on the argument option:
option == "S" : return [0..row_upb-row_lwb+1] (default)
else : return [row_lwb..row_upb]
TVectorD& SetSub(Int_t row_lwb,const TVectorD &source)
Insert vector source starting at [row_lwb], thereby overwriting the part
[row_lwb..row_lwb+nrows_source];
TVectorD& Zero()
TVectorD& Abs()
Take an absolute value of a vector, i.e. apply Abs() to each element.
TVectorD& Sqr()
Square each element of the vector.
TVectorD& Sqrt()
Take square root of all elements.
TVectorD& Invert()
v[i] = 1/v[i]
TVectorD& SelectNonZeros(const TVectorD &select)
Double_t Norm1() const
Compute the 1-norm of the vector SUM{ |v[i]| }.
Double_t Norm2Sqr() const
Compute the square of the 2-norm SUM{ v[i]^2 }.
Double_t NormInf() const
Compute the infinity-norm of the vector MAX{ |v[i]| }.
Int_t NonZeros() const
Compute the number of elements != 0.0
Double_t Sum() const
Compute sum of elements
Double_t Min() const
return minimum vector element value
Double_t Max() const
return maximum vector element value
Bool_t MatchesNonZeroPattern(const TVectorD &select)
Bool_t SomePositive(const TVectorD &select)
void AddSomeConstant(Double_t val,const TVectorD &select)
void Randomize(Double_t alpha,Double_t beta,Double_t &seed)
randomize vector elements value
TVectorD& Apply(const TElementActionD &action)
Apply action to each element of the vector.
TVectorD& Apply(const TElementPosActionD &action)
Apply action to each element of the vector. In action the location
of the current element is known.
void Draw(Option_t *option)
Draw this vector using an intermediate histogram
The histogram is named "TVectorD" by default and no title
void Print(Option_t *flag) const
Print the vector as a list of elements.
void Streamer(TBuffer &R__b)
Stream an object of class TVectorD.
Inline Functions
void ~TVectorD()
Int_t GetLwb() const
Int_t GetUpb() const
Int_t GetNrows() const
Int_t GetNoElements() const
Double_t* GetMatrixArray()
const Double_t* GetMatrixArray() const
void Invalidate()
void MakeValid()
Bool_t IsValid() const
Bool_t IsOwner() const
void SetElements(const Double_t* elements)
TVectorD& Shift(Int_t row_shift)
TVectorD& ResizeTo(Int_t n)
TVectorD& ResizeTo(const TVectorD& v)
TVectorD& Use(Int_t lwb, Int_t upb, Double_t* data)
TVectorD& Use(TVectorD& v)
TVectorD GetSub(Int_t row_lwb, Int_t row_upb, Option_t* option = "S") const
const Double_t& operator()(Int_t index) const
Double_t& operator()(Int_t index)
const Double_t& operator[](Int_t index) const
Double_t& operator[](Int_t index)
TVectorD& operator=(const TVectorD& source)
TVectorD& operator=(const TVectorF& source)
TVectorD& operator=(const TMatrixDRow_const& mr)
TVectorD& operator=(const TMatrixDColumn_const& mc)
TVectorD& operator=(const TMatrixDDiag_const& md)
TVectorD& operator=(const TMatrixDSparseRow_const& md)
TVectorD& operator=(const TMatrixDSparseDiag_const& md)
TVectorD& operator=(Double_t val)
TVectorD& operator+=(Double_t val)
TVectorD& operator-=(Double_t val)
TVectorD& operator*=(Double_t val)
TVectorD& operator+=(const TVectorD& source)
TVectorD& operator-=(const TVectorD& source)
TVectorD& operator*=(const TMatrixD& a)
TVectorD& operator*=(const TMatrixDSym& a)
TVectorD& operator*=(const TMatrixDSparse& a)
Bool_t operator==(Double_t val) const
Bool_t operator!=(Double_t val) const
Bool_t operator<(Double_t val) const
Bool_t operator<=(Double_t val) const
Bool_t operator>(Double_t val) const
Bool_t operator>=(Double_t val) const
void Clear(Option_t*)
TClass* Class()
TClass* IsA() const
void ShowMembers(TMemberInspector& insp, char* parent)
void StreamerNVirtual(TBuffer& b)
Last update: root/matrix:$Name: $:$Id: TVectorD.cxx,v 1.53 2004/09/03 13:41:34 brun Exp $
Copyright (C) 1995-2000, Rene Brun and Fons Rademakers. *
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