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diff --git a/vector.h b/vector.h
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+/*
+ * vector.h:
+ * simple vectors
+ *
+ * Copyright (c) 2001 Chris Lightfoot. All rights reserved.
+ *
+ * $Id: vector.h,v 1.1 2003/10/19 06:44:33 pdw Exp $
+ *
+ */
+
+#ifndef __VECTOR_H_ /* include guard */
+#define __VECTOR_H_
+
+typedef union _item {
+    void *v;
+    long l;
+} item;
+
+#define _inline inline
+
+static _inline item item_long(const long l) { item u; u.l = l; return u; }
+static _inline item item_ptr(void *const v) { item u; u.v = v; return u; }
+
+typedef struct _vector{
+    item *ary;
+    size_t n, n_used;
+} *vector;
+
+vector vector_new(void);
+void vector_delete(vector);
+void vector_delete_free(vector);
+
+void  vector_push_back(vector, const item);
+void  vector_pop_back(vector);
+item vector_back(const vector);
+
+item *vector_remove(vector, item *t);
+
+void  vector_reallocate(vector, const size_t n);
+
+/* A macro to iterate over a vector */
+#define vector_iterate(_v, _t)  for ((_t) = (_v)->ary; (_t) < (_v)->ary + (_v)->n_used; ++(_t))
+
+#endif /* __VECTOR_H_ */