TDecompBase.h File Reference

#include <limits>
#include "TMatrixD.h"
#include "TMatrixDUtils.h"
#include "TVectorD.h"

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Classes
class	TDecompBase

Functions
Bool_t	DefHouseHolder (const TVectorD &vc, Int_t lp, Int_t l, Double_t &up, Double_t &b, Double_t tol=0.0)
	Define a Householder-transformation through the parameters up and b . More...
void	ApplyHouseHolder (const TVectorD &vc, Double_t up, Double_t b, Int_t lp, Int_t l, TMatrixDRow &cr)
	Apply Householder-transformation. More...
void	ApplyHouseHolder (const TVectorD &vc, Double_t up, Double_t b, Int_t lp, Int_t l, TMatrixDColumn &cc)
	Apply Householder-transformation. More...
void	ApplyHouseHolder (const TVectorD &vc, Double_t up, Double_t b, Int_t lp, Int_t l, TVectorD &cv)
	Apply Householder-transformation. More...
void	DefGivens (Double_t v1, Double_t v2, Double_t &c, Double_t &s)
	Defines a Givens-rotation by calculating 2 rotation parameters c and s. More...
void	DefAplGivens (Double_t &v1, Double_t &v2, Double_t &c, Double_t &s)
	Define and apply a Givens-rotation by calculating 2 rotation parameters c and s. More...
void	ApplyGivens (Double_t &z1, Double_t &z2, Double_t c, Double_t s)
	Apply a Givens transformation as defined by c and s to the vector compenents v1 and v2 . More...

Function Documentation

void ApplyGivens	(	Double_t &	z1,
		Double_t &	z2,
		Double_t	c,
		Double_t	s
	)

Apply a Givens transformation as defined by c and s to the vector compenents v1 and v2 .

Definition at line 530 of file TDecompBase.cxx.

Referenced by TDecompSVD::Diag_1(), TDecompSVD::Diag_2(), and TDecompSVD::Diag_3().

void ApplyHouseHolder	(	const TVectorD &	vc,
		Double_t	up,
		Double_t	b,
		Int_t	lp,
		Int_t	l,
		TMatrixDRow &	cr
	)

Apply Householder-transformation.

Definition at line 382 of file TDecompBase.cxx.

Referenced by TDecompSVD::Bidiagonalize(), TDecompQRH::QRH(), TDecompQRH::Solve(), and TDecompQRH::TransSolve().

void ApplyHouseHolder	(	const TVectorD &	vc,
		Double_t	up,
		Double_t	b,
		Int_t	lp,
		Int_t	l,
		TMatrixDColumn &	cc
	)

Apply Householder-transformation.

Definition at line 411 of file TDecompBase.cxx.

void ApplyHouseHolder	(	const TVectorD &	vc,
		Double_t	up,
		Double_t	b,
		Int_t	lp,
		Int_t	l,
		TVectorD &	cv
	)

Apply Householder-transformation.

Definition at line 440 of file TDecompBase.cxx.

void DefAplGivens	(	Double_t &	v1,
		Double_t &	v2,
		Double_t &	c,
		Double_t &	s
	)

Define and apply a Givens-rotation by calculating 2 rotation parameters c and s.

The rotation is defined with and applied to the vector components v1 and v2.

Definition at line 498 of file TDecompBase.cxx.

Referenced by TDecompSVD::Diag_1(), TDecompSVD::Diag_2(), and TDecompSVD::Diag_3().

void DefGivens	(	Double_t	v1,
		Double_t	v2,
		Double_t &	c,
		Double_t &	s
	)

Defines a Givens-rotation by calculating 2 rotation parameters c and s.

The rotation is defined with the vector components v1 and v2.

Definition at line 469 of file TDecompBase.cxx.

Referenced by TDecompSVD::Diag_3().

Bool_t DefHouseHolder	(	const TVectorD &	vc,
		Int_t	lp,
		Int_t	l,
		Double_t &	up,
		Double_t &	b,
		Double_t	tol = 0.0
	)

Define a Householder-transformation through the parameters up and b .

Definition at line 347 of file TDecompBase.cxx.

Referenced by TDecompSVD::Bidiagonalize(), and TDecompQRH::QRH().