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/* bfx.h (LP basis factorization driver, rational arithmetic) */
/***********************************************************************
* This code is part of GLPK (GNU Linear Programming Kit).
*
* Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008,
* 2009, 2010, 2011, 2013 Andrew Makhorin, Department for Applied
* Informatics, Moscow Aviation Institute, Moscow, Russia. All rights
* reserved. E-mail: <mao@gnu.org>.
*
* GLPK is free software: you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* GLPK is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
* License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GLPK. If not, see <http://www.gnu.org/licenses/>.
***********************************************************************/
#ifndef BFX_H
#define BFX_H
#include "mygmp.h"
typedef struct BFX BFX;
#define bfx_create_binv _glp_bfx_create_binv
BFX *bfx_create_binv(void);
/* create factorization of the basis matrix */
#define bfx_is_valid _glp_bfx_is_valid
int bfx_is_valid(BFX *binv);
/* check if factorization is valid */
#define bfx_invalidate _glp_bfx_invalidate
void bfx_invalidate(BFX *binv);
/* invalidate factorization of the basis matrix */
#define bfx_factorize _glp_bfx_factorize
int bfx_factorize(BFX *binv, int m, int (*col)(void *info, int j,
int ind[], mpq_t val[]), void *info);
/* compute factorization of the basis matrix */
#define bfx_ftran _glp_bfx_ftran
void bfx_ftran(BFX *binv, mpq_t x[], int save);
/* perform forward transformation (FTRAN) */
#define bfx_btran _glp_bfx_btran
void bfx_btran(BFX *binv, mpq_t x[]);
/* perform backward transformation (BTRAN) */
#define bfx_update _glp_bfx_update
int bfx_update(BFX *binv, int j);
/* update factorization of the basis matrix */
#define bfx_delete_binv _glp_bfx_delete_binv
void bfx_delete_binv(BFX *binv);
/* delete factorization of the basis matrix */
#endif
/* eof */
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