gbl::VSymMatrix Class Reference

Simple symmetric Matrix based on std::vector<double> More...

#include <VMatrix.h>

Public Member Functions
	VSymMatrix (const unsigned int nRows=0)
virtual	~VSymMatrix ()
void	resize (const unsigned int nRows)
	Resize symmetric matrix. More...
void	setZero ()
	Set content to 0. More...
unsigned int	invert ()
	Matrix inversion. More...
double &	operator() (unsigned int i, unsigned int j)
	access element (i,j) assuming i>=j More...
double	operator() (unsigned int i, unsigned int j) const
	access element (i,j) assuming i>=j More...
unsigned int	getNumRows () const
	Get number of rows (= number of colums). More...
void	print () const
	Print matrix. More...
VSymMatrix	operator- (const VMatrix &aMatrix) const
	Subtraction SymMatrix-(sym)Matrix. More...
VVector	operator* (const VVector &aVector) const
	Multiplication SymMatrix*Vector. More...
VMatrix	operator* (const VMatrix &aMatrix) const
	Multiplication SymMatrix*Matrix. More...

Private Attributes
unsigned int	numRows
	Number of rows. More...
std::vector< double >	theVec
	Data (symmetric storage) More...

Detailed Description

Simple symmetric Matrix based on std::vector<double>

Definition at line 88 of file VMatrix.h.

Constructor & Destructor Documentation

VSymMatrix()

gbl::VSymMatrix::VSymMatrix

(

const unsigned int

nRows = 0

)

Definition at line 169 of file VMatrix.cpp.

~VSymMatrix()

gbl::VSymMatrix::~VSymMatrix ( )

virtual

Definition at line 173 of file VMatrix.cpp.

Member Function Documentation

getNumRows()

unsigned int gbl::VSymMatrix::getNumRows

(

)

const

Get number of rows (= number of colums).

Returns

Number of rows.

Definition at line 194 of file VMatrix.cpp.

References numRows.

invert()

unsigned int gbl::VSymMatrix::invert

(

)

Matrix inversion.

Invert symmetric N-by-N matrix V in symmetric storage mode V(1) = V11, V(2) = V12, V(3) = V22, V(4) = V13, . . . replaced by inverse matrix

Method of solution is by elimination selecting the pivot on the diagonal each stage. The rank of the matrix is returned in NRANK. For NRANK ne N, all remaining rows and cols of the resulting matrix V are set to zero.

Exceptions

1	: matrix is singular.

Returns

Rank of matrix.

Definition at line 363 of file VMatrix.cpp.

References numRows, and theVec.

Referenced by gbl::BorderedBandMatrix::solveAndInvertBorderedBand().

operator()() [1/2]

double & gbl::VSymMatrix::operator() ( unsigned int  i, unsigned int  j  )

inline

access element (i,j) assuming i>=j

Definition at line 128 of file VMatrix.h.

References theVec.

operator()() [2/2]

double gbl::VSymMatrix::operator() ( unsigned int  i, unsigned int  j  ) const

inline

access element (i,j) assuming i>=j

Definition at line 133 of file VMatrix.h.

References theVec.

operator*() [1/2]

VMatrix gbl::VSymMatrix::operator*

(

const VMatrix &

aMatrix

)

const

Multiplication SymMatrix*Matrix.

Definition at line 239 of file VMatrix.cpp.

References gbl::VMatrix::getNumCols(), numRows, and theVec.

operator*() [2/2]

VVector gbl::VSymMatrix::operator*

(

const VVector &

aVector

)

const

Multiplication SymMatrix*Vector.

Definition at line 226 of file VMatrix.cpp.

References numRows, and theVec.

operator-()

VSymMatrix gbl::VSymMatrix::operator-

(

const VMatrix &

aMatrix

)

const

Subtraction SymMatrix-(sym)Matrix.

Definition at line 215 of file VMatrix.cpp.

References numRows, and theVec.

print()

void gbl::VSymMatrix::print

(

)

const

Print matrix.

Definition at line 199 of file VMatrix.cpp.

References numRows, and theVec.

Referenced by gbl::BorderedBandMatrix::printMatrix().

resize()

void gbl::VSymMatrix::resize

(

const unsigned int

nRows

)

Resize symmetric matrix.

Parameters

[in]

nRows

Number of rows.

Definition at line 180 of file VMatrix.cpp.

References numRows, and theVec.

Referenced by gbl::BorderedBandMatrix::resize().

setZero()

void gbl::VSymMatrix::setZero

(

)

Set content to 0.

Definition at line 186 of file VMatrix.cpp.

References theVec.

Referenced by gbl::BorderedBandMatrix::setZero().

Member Data Documentation

numRows

unsigned int gbl::VSymMatrix::numRows

private

Number of rows.

Definition at line 103 of file VMatrix.h.

Referenced by getNumRows(), invert(), operator*(), operator-(), print(), and resize().

theVec

std::vector<double> gbl::VSymMatrix::theVec

private

Data (symmetric storage)

Definition at line 104 of file VMatrix.h.

Referenced by invert(), operator()(), operator*(), operator-(), print(), resize(), and setZero().

---

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

• src/VMatrix.h
• src/VMatrix.cpp