solver-tools.c File Reference

#include "postprocess.h"

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Defines
#define	FIT(i)   gsl_vector_get(s->x, i)
#define	ERR(i)   sqrt(gsl_matrix_get(covar,i,i))
Functions
int	gsl_linsolve_svd (gsl_matrix *A, gsl_vector *b, gsl_vector *x)
	Linear Algebra: SVD.
int	gsl_linsolve_lu (gsl_matrix *A, gsl_vector *b, gsl_vector *x)
	Linear Algebra LU decomposition.
int	encaps_gsl_linsolveSVD (vector< vector< double > > &A, vector< double > &b, vector< double > &x)
	SVD solutions.
int	encaps_gsl_linsolveLU (double A[], double b[], double x[], int size)
	Encapsule gsl_linsolve_lu.
int	solve_gsl_lm (gsl_multifit_function_fdf *f, gsl_vector_view xv, double precision, int nbre_iter, gsl_multifit_fdfsolver *s, gsl_matrix *covar)
void	print_results_lm (gsl_multifit_fdfsolver *s, size_t n, size_t p, int status, gsl_matrix *covar)
	Print Least Square result.

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Define Documentation

#define ERR

(

i

)

sqrt(gsl_matrix_get(covar,i,i))

Referenced by print_results_lm().

#define FIT

(

i

)

gsl_vector_get(s->x, i)

Referenced by print_results_lm().

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Function Documentation

int encaps_gsl_linsolveLU	(	double	A[],
		double	b[],
		double	x[],
		int	size
	)

Encapsule gsl_linsolve_lu.

References gsl_linsolve_lu().

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int encaps_gsl_linsolveSVD	(	vector< vector< double > > &	A,
		vector< double > &	b,
		vector< double > &	x
	)

SVD solutions.

This function takes in data expressed as vectors and solves linear equation Ax-b= 0 using the SVD method

References gsl_linsolve_svd(), vect2double(), and vectormat2double().

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int gsl_linsolve_lu	(	gsl_matrix *	A,
		gsl_vector *	b,
		gsl_vector *	x
	)

Linear Algebra LU decomposition.

Solve linear equation A*X-b = 0 uising LU decomposition

Referenced by encaps_gsl_linsolveLU().

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int gsl_linsolve_svd	(	gsl_matrix *	A,
		gsl_vector *	b,
		gsl_vector *	x
	)

Linear Algebra: SVD.

Solve equation A*x -b = 0 using SVD

Referenced by encaps_gsl_linsolveSVD().

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void print_results_lm	(	gsl_multifit_fdfsolver *	s,
		size_t	n,
		size_t	p,
		int	status,
		gsl_matrix *	covar
	)

Print Least Square result.

Display the result found using Least Squares

References ERR, and FIT.

Referenced by calc_joint_ang(), and get_betas().

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int solve_gsl_lm	(	gsl_multifit_function_fdf *	f,
		gsl_vector_view	xv,
		double	precision,
		int	nbre_iter,
		gsl_multifit_fdfsolver *	s,
		gsl_matrix *	covar
	)

solve lm : rempli s avec la solution et covar avec la covariance a partir de la fonction f, du vecteur initial xv avec la methode de levenberg-marquardt pour une precision et un nombre d'iteration max

calcul de l'erreur

Referenced by calc_joint_ang(), and get_betas().

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