| 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 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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