Garfield::Numerics::CERNLIB Namespace Reference

Linear algebra routines from CERNLIB. More...

Functions
int	deqn (const int n, std::vector< std::vector< double > > &a, std::vector< double > &b)
	Replaces b by the solution x of Ax = b, after which A is undefined.
int	deqinv (const int n, std::vector< std::vector< double > > &a, std::vector< double > &b)
	Replaces b by the solution x of Ax = b, and replace A by its inverse.
void	dfact (const int n, std::vector< std::vector< double > > &a, std::vector< int > &ir, int &ifail, double &det, int &jfail)
void	dfeqn (const int n, std::vector< std::vector< double > > &a, std::vector< int > &ir, std::vector< double > &b)
void	dfinv (const int n, std::vector< std::vector< double > > &a, std::vector< int > &ir)
int	dinv (const int n, std::vector< std::vector< double > > &a)
	Replace square matrix A by its inverse.
void	cfact (const int n, std::vector< std::vector< std::complex< double > > > &a, std::vector< int > &ir, int &ifail, std::complex< double > &det, int &jfail)
void	cfinv (const int n, std::vector< std::vector< std::complex< double > > > &a, std::vector< int > &ir)
int	cinv (const int n, std::vector< std::vector< std::complex< double > > > &a)
	Replace square matrix A by its inverse.
void	cfft (std::vector< std::complex< double > > &a, const int msign)

Detailed Description

Linear algebra routines from CERNLIB.

Function Documentation

cfact()

void Garfield::Numerics::CERNLIB::cfact	(	const int	n,
		std::vector< std::vector< std::complex< double > > > &	a,
		std::vector< int > &	ir,
		int &	ifail,
		std::complex< double > &	det,
		int &	jfail )

cfft()

void Garfield::Numerics::CERNLIB::cfft	(	std::vector< std::complex< double > > &	a,
		const int	msign )

cfinv()

void Garfield::Numerics::CERNLIB::cfinv	(	const int	n,
		std::vector< std::vector< std::complex< double > > > &	a,
		std::vector< int > &	ir )

cinv()

int Garfield::Numerics::CERNLIB::cinv	(	const int	n,
		std::vector< std::vector< std::complex< double > > > &	a )

Replace square matrix A by its inverse.

deqinv()

int Garfield::Numerics::CERNLIB::deqinv	(	const int	n,
		std::vector< std::vector< double > > &	a,
		std::vector< double > &	b )

Replaces b by the solution x of Ax = b, and replace A by its inverse.

deqn()

int Garfield::Numerics::CERNLIB::deqn	(	const int	n,
		std::vector< std::vector< double > > &	a,
		std::vector< double > &	b )

Replaces b by the solution x of Ax = b, after which A is undefined.

Parameters

n	order of the square matrix A.
a	n by n matrix.
b	right-hand side vector.

Returns

0: normal exit, -1: singular matrix.

dfact()

void Garfield::Numerics::CERNLIB::dfact	(	const int	n,
		std::vector< std::vector< double > > &	a,
		std::vector< int > &	ir,
		int &	ifail,
		double &	det,
		int &	jfail )

dfeqn()

void Garfield::Numerics::CERNLIB::dfeqn	(	const int	n,
		std::vector< std::vector< double > > &	a,
		std::vector< int > &	ir,
		std::vector< double > &	b )

dfinv()

void Garfield::Numerics::CERNLIB::dfinv	(	const int	n,
		std::vector< std::vector< double > > &	a,
		std::vector< int > &	ir )

dinv()

int Garfield::Numerics::CERNLIB::dinv	(	const int	n,
		std::vector< std::vector< double > > &	a )

Replace square matrix A by its inverse.