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diff --git a/lib/vector.h b/lib/vector.h
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+/*
+ * Generic vector interface header.
+ * Copyright (C) 1997, 98 Kunihiro Ishiguro
+ *
+ * This file is part of GNU Zebra.
+ *
+ * GNU Zebra 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 2, or (at your option) any
+ * later version.
+ *
+ * GNU Zebra 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 GNU Zebra; see the file COPYING.  If not, write to the Free
+ * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
+ * 02111-1307, USA.  
+ */
+
+#ifndef _ZEBRA_VECTOR_H
+#define _ZEBRA_VECTOR_H
+
+/* struct for vector */
+struct _vector 
+{
+  unsigned int max;		/* max number of used slot */
+  unsigned int alloced;		/* number of allocated slot */
+  void **index;			/* index to data */
+};
+typedef struct _vector *vector;
+
+#define VECTOR_MIN_SIZE 1
+
+/* (Sometimes) usefull macros.  This macro convert index expression to
+ array expression. */
+#define vector_slot(V,I)  ((V)->index[(I)])
+#define vector_max(V) ((V)->max)
+
+/* Prototypes. */
+vector vector_init (unsigned int size);
+void vector_ensure (vector v, unsigned int num);
+int vector_empty_slot (vector v);
+int vector_set (vector v, void *val);
+int vector_set_index (vector v, unsigned int i, void *val);
+void vector_unset (vector v, unsigned int i);
+unsigned int vector_count (vector v);
+void vector_only_wrapper_free (vector v);
+void vector_only_index_free (void *index);
+void vector_free (vector v);
+vector vector_copy (vector v);
+
+void *vector_lookup (vector, unsigned int);
+void *vector_lookup_ensure (vector, unsigned int);
+
+#endif /* _ZEBRA_VECTOR_H */