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: Aug 14th, 1998 */
24 #include "tisean_cec.h"
26 void solvele(double **mat,double *vec,unsigned int n)
28 double vswap,*mswap,*hvec,max,h,pivot,q;
35 if ((h=fabs(mat[j][i])) > max) {
50 if (fabs(pivot) == 0.0) {
51 fprintf(stderr,"Singular matrix! Exiting!\n");
52 exit(SOLVELE_SINGULAR_MATRIX);
58 mat[j][k] += q*hvec[k];
62 vec[n-1] /= mat[n-1][n-1];
63 for (i=n-2;i>=0;i--) {
66 vec[i] -= hvec[j]*vec[j];