1 /* glpbfd.h (LP basis factorization driver) */
3 /***********************************************************************
4 * This code is part of GLPK (GNU Linear Programming Kit).
6 * Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008,
7 * 2009, 2010 Andrew Makhorin, Department for Applied Informatics,
8 * Moscow Aviation Institute, Moscow, Russia. All rights reserved.
9 * E-mail: <mao@gnu.org>.
11 * GLPK is free software: you can redistribute it and/or modify it
12 * under the terms of the GNU General Public License as published by
13 * the Free Software Foundation, either version 3 of the License, or
14 * (at your option) any later version.
16 * GLPK is distributed in the hope that it will be useful, but WITHOUT
17 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
18 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
19 * License for more details.
21 * You should have received a copy of the GNU General Public License
22 * along with GLPK. If not, see <http://www.gnu.org/licenses/>.
23 ***********************************************************************/
28 #ifndef GLPBFD_PRIVATE
29 typedef struct { double _opaque_bfd[100]; } BFD;
33 #define BFD_ESING 1 /* singular matrix */
34 #define BFD_ECOND 2 /* ill-conditioned matrix */
35 #define BFD_ECHECK 3 /* insufficient accuracy */
36 #define BFD_ELIMIT 4 /* update limit reached */
37 #define BFD_EROOM 5 /* SVA overflow */
39 #define bfd_create_it _glp_bfd_create_it
40 BFD *bfd_create_it(void);
41 /* create LP basis factorization */
43 #define bfd_set_parm _glp_bfd_set_parm
44 void bfd_set_parm(BFD *bfd, const void *parm);
45 /* change LP basis factorization control parameters */
47 #define bfd_factorize _glp_bfd_factorize
48 int bfd_factorize(BFD *bfd, int m, const int bh[], int (*col)
49 (void *info, int j, int ind[], double val[]), void *info);
50 /* compute LP basis factorization */
52 #define bfd_ftran _glp_bfd_ftran
53 void bfd_ftran(BFD *bfd, double x[]);
54 /* perform forward transformation (solve system B*x = b) */
56 #define bfd_btran _glp_bfd_btran
57 void bfd_btran(BFD *bfd, double x[]);
58 /* perform backward transformation (solve system B'*x = b) */
60 #define bfd_update_it _glp_bfd_update_it
61 int bfd_update_it(BFD *bfd, int j, int bh, int len, const int ind[],
63 /* update LP basis factorization */
65 #define bfd_get_count _glp_bfd_get_count
66 int bfd_get_count(BFD *bfd);
67 /* determine factorization update count */
69 #define bfd_delete_it _glp_bfd_delete_it
70 void bfd_delete_it(BFD *bfd);
71 /* delete LP basis factorization */