#include <Jacobian.h>

Public Member Functions
	Jacobian (void)

	~Jacobian (void)

void	clear (void)
	zeroes all elements without resetting sparsity structure More...

void	resize (unsigned int n)

unsigned int	size () const

const double &	elem (int i, int j) const

double	setelem (int i, int j, double x)

void	scaleelem (int i, int j, double y)
	if it exists, multiplies element i,j by y More...

bool	nonzero (int i, int j) const

int	nonzerocount (void) const

bool	isSparse (void) const

void	bmpout (const char *file_out_name) const

void	printtripletmatrix (const char *filename) const

void	print (void) const

double	setcolumn (const std::vector< Value > &y_, int j, double scale)

int	backslash (double *b)

int	decompose (void)

int	solve (double *b)

void	release (void)
	release resources used for decomposing / solving More...

Detailed Description

dense / isSparse Jacobian

#include <libpf/core/Jacobian.h>

Remarks

Warning: Thread safe:; Extendable:; Platform dependencies:

Constructor & Destructor Documentation

◆ Jacobian()

Jacobian::Jacobian ( void )

◆ ~Jacobian()

Jacobian::~Jacobian ( void )

Member Function Documentation

◆ backslash()

int Jacobian::backslash ( double * b )

invert matrix, solve with column vector x, put solution back into x returns 0 on success

◆ bmpout()

void Jacobian::bmpout ( const char * file_out_name ) const

output the Jacobian sparsity signature as a bitmap white = zero red = NAN light blues = absolute values between 1E-12 and 0 blue = absolute value smaller than 1E-12 light greens = absolute values between 0 and 1E12 blue = absolute value greater than 1E12

◆ clear()

void Jacobian::clear ( void )

zeroes all elements without resetting sparsity structure

◆ decompose()

int Jacobian::decompose ( void )

decompose Jacobian matrix returns 0 on success

◆ elem()

const double & Jacobian::elem	(	int	i,
		int	j
	)		const

◆ isSparse()

bool Jacobian::isSparse ( void ) const

◆ nonzero()

bool Jacobian::nonzero	(	int	i,
		int	j
	)		const

◆ nonzerocount()

int Jacobian::nonzerocount ( void ) const

◆ print()

void Jacobian::print ( void ) const

◆ printtripletmatrix()

void Jacobian::printtripletmatrix ( const char * filename ) const

◆ release()

void Jacobian::release ( void )

release resources used for decomposing / solving

◆ resize()

void Jacobian::resize ( unsigned int n )

◆ scaleelem()

void Jacobian::scaleelem	(	int	i,
		int	j,
		double	y
	)

if it exists, multiplies element i,j by y

◆ setcolumn()

double Jacobian::setcolumn	(	const std::vector< Value > &	y_,
		int	j,
		double	scale
	)

◆ setelem()

double Jacobian::setelem	(	int	i,
		int	j,
		double	x
	)

◆ size()

unsigned int Jacobian::size ( ) const

inline

◆ solve()

int Jacobian::solve ( double * b )

solve already decomposed Jacobian with column vector x, put solution back into x returns 0 on success

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

Jacobian.h

Public Member Functions