2 * This file is part of TISEAN
4 * Copyright (c) 1998-2007 Rainer Hegger, Holger Kantz, Thomas Schreiber
6 * TISEAN is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
11 * TISEAN is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with TISEAN; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
20 /* Author: Rainer Hegger Last modified: Sep 5, 2004*/
22 * Sep 5, 2004: added the extern check_alloc line
28 extern void check_alloc(void*);
30 double **invert_matrix(double **mat,unsigned int size)
33 double **hmat,**imat,*vec;
34 extern void solvele(double**,double*,unsigned int);
36 check_alloc(hmat=(double**)malloc(sizeof(double*)*size));
37 for (i=0;i<size;i++) {
38 check_alloc(hmat[i]=(double*)malloc(sizeof(double)*size));
41 check_alloc(imat=(double**)malloc(sizeof(double*)*size));
42 for (i=0;i<size;i++) {
43 check_alloc(imat[i]=(double*)malloc(sizeof(double)*size));
46 check_alloc(vec=(double*)malloc(sizeof(double)*size));
48 for (i=0;i<size;i++) {
49 for (j=0;j<size;j++) {
50 vec[j]=(i==j)?1.0:0.0;
54 solvele(hmat,vec,size);