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diff --git a/glpk-5.0/src/draft/bfx.h b/glpk-5.0/src/draft/bfx.h
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+/* bfx.h (LP basis factorization driver, rational arithmetic) */
+
+/***********************************************************************
+*  This code is part of GLPK (GNU Linear Programming Kit).
+*  Copyright (C) 2007-2014 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 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 */