1 files changed, 89 insertions, 0 deletions
diff --git a/glpk-5.0/src/intopt/cfg2.c b/glpk-5.0/src/intopt/cfg2.c
new file mode 100644
index 0000000..76840f6
--- /dev/null
+++ b/glpk-5.0/src/intopt/cfg2.c
@@ -0,0 +1,89 @@
+/* cfg2.c (conflict graph) */
+
+/***********************************************************************
+*  This code is part of GLPK (GNU Linear Programming Kit).
+*  Copyright (C) 2015-2016 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/>.
+***********************************************************************/
+
+#include "cfg.h"
+#include "env.h"
+#include "prob.h"
+
+/***********************************************************************
+*  NAME
+*
+*  glp_cfg_init - create and initialize conflict graph
+*
+*  SYNOPSIS
+*
+*  glp_cfg *glp_cfg_init(glp_prob *P);
+*
+*  DESCRIPTION
+*
+*  This routine creates and initializes the conflict graph for the
+*  specified problem object.
+*
+*  RETURNS
+*
+*  The routine returns a pointer to the conflict graph descriptor.
+*  However, if the conflict graph is empty (no conflicts have been
+*  found), the routine returns NULL. */
+
+glp_cfg *glp_cfg_init(glp_prob *P)
+{     glp_cfg *G;
+      int j, n1, n2;
+      xprintf("Constructing conflict graph...\n");
+      G = cfg_build_graph(P);
+      n1 = n2 = 0;
+      for (j = 1; j <= P->n; j++)
+      {  if (G->pos[j])
+            n1 ++;
+         if (G->neg[j])
+            n2++;
+      }
+      if (n1 == 0 && n2 == 0)
+      {  xprintf("No conflicts found\n");
+         cfg_delete_graph(G);
+         G = NULL;
+      }
+      else
+         xprintf("Conflict graph has %d + %d = %d vertices\n",
+            n1, n2, G->nv);
+      return G;
+}
+
+/***********************************************************************
+*  NAME
+*
+*  glp_cfg_free - delete conflict graph descriptor
+*
+*  SYNOPSIS
+*
+*  void glp_cfg_free(glp_cfg *G);
+*
+*  DESCRIPTION
+*
+*  This routine deletes the conflict graph descriptor and frees all the
+*  memory allocated to it. */
+
+void glp_cfg_free(glp_cfg *G)
+{     xassert(G != NULL);
+      cfg_delete_graph(G);
+      return;
+}
+
+/* eof */