From ef800d4ffafdbde7d7a172ad73bd984b1695c138 Mon Sep 17 00:00:00 2001
From: Pasha <pasha@member.fsf.org>
Date: Fri, 27 Jan 2023 00:54:07 +0000
Subject: simplex-glpk with modified glpk for fpga

---
 glpk-5.0/src/bflib/btfint.h | 71 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 71 insertions(+)
 create mode 100644 glpk-5.0/src/bflib/btfint.h

(limited to 'glpk-5.0/src/bflib/btfint.h')

diff --git a/glpk-5.0/src/bflib/btfint.h b/glpk-5.0/src/bflib/btfint.h
new file mode 100644
index 0000000..5c7f043
--- /dev/null
+++ b/glpk-5.0/src/bflib/btfint.h
@@ -0,0 +1,71 @@
+/* btfint.h (interface to BT-factorization) */
+
+/***********************************************************************
+*  This code is part of GLPK (GNU Linear Programming Kit).
+*  Copyright (C) 2013-2014 Free Software Foundation, Inc.
+*  Written by Andrew Makhorin <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 BTFINT_H
+#define BTFINT_H
+
+#include "btf.h"
+#include "sgf.h"
+
+typedef struct BTFINT BTFINT;
+
+struct BTFINT
+{     /* interface to BT-factorization */
+      int n_max;
+      /* maximal value of n (increased automatically) */
+      int valid;
+      /* factorization is valid only if this flag is set */
+      SVA *sva;
+      /* sparse vector area (SVA) */
+      BTF *btf;
+      /* sparse block triangular LU-factorization */
+      SGF *sgf;
+      /* sparse Gaussian factorizer workspace */
+      /*--------------------------------------------------------------*/
+      /* control parameters */
+      int sva_n_max, sva_size;
+      /* parameters passed to sva_create_area */
+      int delta_n0, delta_n;
+      /* if n_max = 0, set n_max = n + delta_n0
+       * if n_max < n, set n_max = n + delta_n */
+      double sgf_piv_tol;
+      int sgf_piv_lim;
+      int sgf_suhl;
+      double sgf_eps_tol;
+      /* factorizer control parameters */
+};
+
+#define btfint_create _glp_btfint_create
+BTFINT *btfint_create(void);
+/* create interface to BT-factorization */
+
+#define btfint_factorize _glp_btfint_factorize
+int btfint_factorize(BTFINT *fi, int n, int (*col)(void *info, int j,
+      int ind[], double val[]), void *info);
+/* compute BT-factorization of specified matrix A */
+
+#define btfint_delete _glp_btfint_delete
+void btfint_delete(BTFINT *fi);
+/* delete interface to BT-factorization */
+
+#endif
+
+/* eof */
-- 
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