oofem::RowColumn Class Reference

This class implements a segment of a unsymmetric matrix stored in segmented form (skyline). More...

#include <rowcol.h>

Public Member Functions
	RowColumn (int, int)
	~RowColumn ()
double &	atU (int i)
double &	atL (int i)
double &	atDiag ()
void	checkBounds (int)
void	checkSizeTowards (const IntArray &)
double	dot (const FloatArray &, char, int, int)
int	giveStart ()
void	growTo (int)
void	zero ()
void	printYourself ()
int	giveSize ()
RowColumn *	GiveCopy ()

Protected Member Functions
	RowColumn (int, int, double *, double *, double)

Protected Attributes
int	number
int	start
double *	row
double *	column
double	diag

Detailed Description

This class implements a segment of a unsymmetric matrix stored in segmented form (skyline).

A row-column segment i contains the following items :

• the i-th row of the lower half of the matrix ('row')
• the i-th column of the upper part of the matrix ('column')
• the i-th diagonal coefficient of the matrix ('diag'). Since the profile of the matrix is supposed to be symmetric (but not its coefficients), the row and the column have the same length. The row stores coefficients from left to right, the column from up to down ; both exclude the diagonal coefficient. Both start at the first non-zero coefficient, whose position is 'start'.

Tasks:

• storing and returning coefficients. For segment k:
  • any coefficient A(i,k) of the upper part of the matrix ( ) is accessed through method 'atU(i)'. It belongs to the column of the segment ;
  • any coefficient A(k,i) of the lower part of the matrix ( ) is accessed through method 'atL(i)'. It belongs to the row of the segment ;
  • the coefficient A(k,k) is obtained through method 'atDiag()' ;
• enlarging itself in order to accommodate more coefficients (method 'growTo')
• resetting to zero all of its coefficients (method 'reinitialized').

Definition at line 65 of file rowcol.h.

Constructor & Destructor Documentation

oofem::RowColumn::RowColumn	(	int	n,
		int	st
	)

Definition at line 44 of file rowcol.C.

References column, diag, number, OOFEM_ERROR, row, and start.

Referenced by GiveCopy().

oofem::RowColumn::~RowColumn

(

)

Definition at line 66 of file rowcol.C.

References atL(), atU(), checkBounds(), column, row, and start.

oofem::RowColumn::RowColumn ( int  inumber, int  istart, double *  irow, double *  icol, double  idiag  )

protected

Definition at line 286 of file rowcol.C.

References column, diag, number, row, and start.

Member Function Documentation

double& oofem::RowColumn::atDiag ( )

inline

Definition at line 86 of file rowcol.h.

References oofem::dot().

Referenced by oofem::SkylineUnsym::at(), oofem::SkylineUnsym::backSubstitutionWith(), oofem::SkylineUnsym::factorized(), oofem::SkylineUnsym::times(), and oofem::SkylineUnsym::timesT().

double& oofem::RowColumn::atL ( int  i )

inline

Definition at line 84 of file rowcol.h.

Referenced by oofem::SkylineUnsym::at(), oofem::SkylineUnsym::factorized(), oofem::SkylineUnsym::times(), oofem::SkylineUnsym::timesT(), and ~RowColumn().

double& oofem::RowColumn::atU ( int  i )

inline

Definition at line 83 of file rowcol.h.

Referenced by oofem::SkylineUnsym::at(), oofem::SkylineUnsym::backSubstitutionWith(), oofem::SkylineUnsym::factorized(), oofem::SkylineUnsym::times(), and ~RowColumn().

void oofem::RowColumn::checkBounds

(

int

i

)

Definition at line 95 of file rowcol.C.

References number, OOFEM_ERROR, and start.

Referenced by ~RowColumn().

void oofem::RowColumn::checkSizeTowards

(

const IntArray &

loc

)

Definition at line 104 of file rowcol.C.

References oofem::IntArray::at(), oofem::IntArray::giveSize(), growTo(), oofem::min(), OOFEM_ERROR, and start.

Referenced by oofem::SkylineUnsym::checkSizeTowards().

double oofem::RowColumn::dot	(	const FloatArray &	b,
		char	c,
		int	first,
		int	last
	)

Definition at line 136 of file rowcol.C.

References column, oofem::FloatArray::givePointer(), row, and start.

Referenced by oofem::SkylineUnsym::backSubstitutionWith(), oofem::SkylineUnsym::factorized(), oofem::SkylineUnsym::times(), and oofem::SkylineUnsym::timesT().

RowColumn * oofem::RowColumn::GiveCopy

(

)

Definition at line 252 of file rowcol.C.

References column, diag, number, OOFEM_ERROR, row, RowColumn(), and start.

Referenced by oofem::SkylineUnsym::GiveCopy().

int oofem::RowColumn::giveSize ( )

inline

Definition at line 94 of file rowcol.h.

Referenced by oofem::SkylineUnsym::printStatistics().

int oofem::RowColumn::giveStart ( )

inline

Definition at line 90 of file rowcol.h.

Referenced by oofem::SkylineUnsym::backSubstitutionWith(), oofem::SkylineUnsym::factorized(), oofem::SkylineUnsym::times(), oofem::SkylineUnsym::timesT(), and oofem::SkylineUnsym::toFloatMatrix().

void oofem::RowColumn::growTo

(

int

newStart

)

Definition at line 166 of file rowcol.C.

References column, number, OOFEM_ERROR, row, and start.

Referenced by oofem::SkylineUnsym::buildInternalStructure(), checkSizeTowards(), and oofem::SkylineUnsym::setInternalStructure().

void oofem::RowColumn::printYourself

(

)

Definition at line 218 of file rowcol.C.

References column, diag, number, row, and start.

void oofem::RowColumn::zero

(

)

Definition at line 237 of file rowcol.C.

References column, diag, number, row, and start.

Referenced by oofem::SkylineUnsym::zero().

Member Data Documentation

double* oofem::RowColumn::column

protected

Definition at line 72 of file rowcol.h.

Referenced by dot(), GiveCopy(), growTo(), printYourself(), RowColumn(), zero(), and ~RowColumn().

double oofem::RowColumn::diag

protected

Definition at line 73 of file rowcol.h.

Referenced by GiveCopy(), printYourself(), RowColumn(), and zero().

int oofem::RowColumn::number

protected

Definition at line 69 of file rowcol.h.

Referenced by checkBounds(), GiveCopy(), growTo(), printYourself(), RowColumn(), and zero().

double* oofem::RowColumn::row

protected

Definition at line 71 of file rowcol.h.

Referenced by dot(), GiveCopy(), growTo(), printYourself(), RowColumn(), zero(), and ~RowColumn().

int oofem::RowColumn::start

protected

Definition at line 70 of file rowcol.h.

Referenced by checkBounds(), checkSizeTowards(), dot(), GiveCopy(), growTo(), printYourself(), RowColumn(), zero(), and ~RowColumn().

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

• rowcol.h
• rowcol.C