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1 /* glpbfx.h (basis factorization interface, bignum arithmetic) */
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2
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3 /***********************************************************************
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4 * This code is part of GLPK (GNU Linear Programming Kit).
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5 *
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6 * Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008,
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7 * 2009, 2010, 2011 Andrew Makhorin, Department for Applied Informatics,
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8 * Moscow Aviation Institute, Moscow, Russia. All rights reserved.
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9 * E-mail: <mao@gnu.org>.
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10 *
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11 * GLPK is free software: you can redistribute it and/or modify it
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12 * under the terms of the GNU General Public License as published by
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13 * the Free Software Foundation, either version 3 of the License, or
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14 * (at your option) any later version.
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15 *
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16 * GLPK is distributed in the hope that it will be useful, but WITHOUT
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17 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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18 * or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
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19 * License for more details.
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20 *
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21 * You should have received a copy of the GNU General Public License
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22 * along with GLPK. If not, see <http://www.gnu.org/licenses/>.
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23 ***********************************************************************/
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24
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25 #ifndef GLPBFX_H
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26 #define GLPBFX_H
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27
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28 #include "glpgmp.h"
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29
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30 #ifndef GLPBFX_DEFINED
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31 #define GLPBFX_DEFINED
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32 typedef struct { double _opaque_bfx; } BFX;
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33 #endif
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34
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35 #define bfx_create_binv _glp_bfx_create_binv
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36 #define bfx_is_valid _glp_bfx_is_valid
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37 #define bfx_invalidate _glp_bfx_invalidate
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38 #define bfx_factorize _glp_bfx_factorize
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39 #define bfx_ftran _glp_bfx_ftran
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40 #define bfx_btran _glp_bfx_btran
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41 #define bfx_update _glp_bfx_update
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42 #define bfx_delete_binv _glp_bfx_delete_binv
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43
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44 BFX *bfx_create_binv(void);
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45 /* create factorization of the basis matrix */
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46
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47 int bfx_is_valid(BFX *binv);
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48 /* check if factorization is valid */
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49
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50 void bfx_invalidate(BFX *binv);
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51 /* invalidate factorization of the basis matrix */
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52
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53 int bfx_factorize(BFX *binv, int m, int (*col)(void *info, int j,
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54 int ind[], mpq_t val[]), void *info);
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55 /* compute factorization of the basis matrix */
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56
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57 void bfx_ftran(BFX *binv, mpq_t x[], int save);
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58 /* perform forward transformation (FTRAN) */
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59
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60 void bfx_btran(BFX *binv, mpq_t x[]);
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61 /* perform backward transformation (BTRAN) */
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62
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63 int bfx_update(BFX *binv, int j);
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64 /* update factorization of the basis matrix */
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65
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66 void bfx_delete_binv(BFX *binv);
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67 /* delete factorization of the basis matrix */
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68
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69 #endif
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70
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71 /* eof */
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