oofem::RowColumn Class Reference

#include <rowcol.h>

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

Protected Attributes
int	number
int	start
std::vector< double >	row
std::vector< 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 ( \( i < k \)) 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 ( \( i < k \)) 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 67 of file rowcol.h.

Constructor & Destructor Documentation

RowColumn() [1/2]

oofem::RowColumn::RowColumn

(

int

n

)

Definition at line 46 of file rowcol.C.

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

RowColumn() [2/2]

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

Definition at line 56 of file rowcol.C.

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

Member Function Documentation

atDiag() [1/2]

double & oofem::RowColumn::atDiag ( )

inline

Definition at line 91 of file rowcol.h.

References diag.

atDiag() [2/2]

double oofem::RowColumn::atDiag ( ) const

inline

Definition at line 92 of file rowcol.h.

References diag.

atL() [1/2]

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

inline

Definition at line 87 of file rowcol.h.

References row, and start.

atL() [2/2]

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

inline

Definition at line 89 of file rowcol.h.

References row, and start.

atU() [1/2]

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

inline

Definition at line 86 of file rowcol.h.

References column, and start.

atU() [2/2]

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

inline

Definition at line 88 of file rowcol.h.

References column, and start.

checkBounds()

void oofem::RowColumn::checkBounds

(

int

i

)

const

Definition at line 93 of file rowcol.C.

References number, OOFEM_ERROR, and start.

checkSizeTowards()

void oofem::RowColumn::checkSizeTowards

(

const IntArray &

loc

)

Definition at line 101 of file rowcol.C.

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

dot()

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

Definition at line 131 of file rowcol.C.

References column, row, and start.

giveSize()

int oofem::RowColumn::giveSize ( ) const

inline

Definition at line 100 of file rowcol.h.

References number, and start.

giveStart()

int oofem::RowColumn::giveStart ( ) const

inline

Definition at line 96 of file rowcol.h.

References start.

growTo()

void oofem::RowColumn::growTo

(

int

newStart

)

Todo

Might be better to just store the data in the opposite order instead, so that a resize "does the right thing" directly.

Definition at line 158 of file rowcol.C.

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

Referenced by checkSizeTowards().

printYourself()

void oofem::RowColumn::printYourself

(

)

const

Definition at line 177 of file rowcol.C.

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

zero()

void oofem::RowColumn::zero

(

)

Definition at line 195 of file rowcol.C.

References column, diag, and row.

Member Data Documentation

column

std::vector<double> oofem::RowColumn::column

protected

Definition at line 73 of file rowcol.h.

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

diag

double oofem::RowColumn::diag

protected

Definition at line 74 of file rowcol.h.

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

number

int oofem::RowColumn::number

protected

Definition at line 70 of file rowcol.h.

Referenced by checkBounds(), giveSize(), growTo(), printYourself(), RowColumn(), and RowColumn().

row

std::vector<double> oofem::RowColumn::row

protected

Definition at line 72 of file rowcol.h.

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

start

int oofem::RowColumn::start

protected

Definition at line 71 of file rowcol.h.

Referenced by atL(), atL(), atU(), atU(), checkBounds(), checkSizeTowards(), dot(), giveSize(), giveStart(), growTo(), printYourself(), RowColumn(), and RowColumn().

---

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

• rowcol.h
• rowcol.C