/* GNUPLOT - matrix.h */

/* NOTICE: Change of Copyright Status

*

* The author of this module, Carsten Grammes, has expressed in

* personal email that he has no more interest in this code, and

* doesn't claim any copyright. He has agreed to put this module

* into the public domain.

*

* Lars Hecking 15-02-1999

*/

/*

* Header file: public functions in matrix.c

*

*

* Previous copyright of this module: Carsten Grammes, 1993

* Experimental Physics, University of Saarbruecken, Germany

*/

#ifndef MATRIX_H

#define MATRIX_H

#include "syscfg.h"

/******* public functions ******/

double *vec(int n);

int *ivec(int n);

double **matr(int r, int c);

void free_matr(double **m);

double *redim_vec(double **v, int n);

void solve(double **a, int n, double **b, int m);

void Givens(double **C, double *d, double *x, int N, int n);

void Invert_RtR(double **R, double **I, int n);

/* Functions for use by THIN_PLATE_SPLINES_GRID method */

void lu_decomp(double **, int, int *, double *);

void lu_backsubst(double **, int n, int *, double *);

double enorm_vec(int n, const double *x);

double sumsq_vec(int n, const double *x);

#endif /* MATRIX_H */