1 files changed, 57 insertions, 0 deletions
diff --git a/include/search.h b/include/search.h
new file mode 100644
index 0000000..37f2e60
--- /dev/null
+++ b/include/search.h
@@ -0,0 +1,57 @@
+/*	$OpenBSD: search.h,v 1.10 2014/07/18 04:16:09 matthew Exp $	*/
+/*	$NetBSD: search.h,v 1.9 1995/08/08 21:14:45 jtc Exp $	*/
+
+/*
+ * Written by J.T. Conklin <jtc@netbsd.org>
+ * Public domain.
+ */
+
+#ifndef _SEARCH_H_
+#define _SEARCH_H_
+
+#include <sys/cdefs.h>
+#include <machine/_types.h>
+
+#ifndef	_SIZE_T_DEFINED_
+#define	_SIZE_T_DEFINED_
+typedef	__size_t	size_t;
+#endif
+
+typedef struct entry {
+	char *key;
+	void *data;
+} ENTRY;
+
+typedef enum {
+	FIND, ENTER
+} ACTION;
+
+typedef enum {
+	preorder,
+	postorder,
+	endorder,
+	leaf
+} VISIT;
+
+__BEGIN_DECLS
+int	 hcreate(size_t);
+void	 hdestroy(void);
+ENTRY	*hsearch(ENTRY, ACTION);
+
+void	*lfind(const void *, const void *, size_t *, size_t,
+	    int (*)(const void *, const void *));
+void	*lsearch(const void *, void *, size_t *, size_t,
+	    int (*)(const void *, const void *));
+void	 insque(void *, void *);
+void	 remque(void *);
+
+void	*tdelete(const void * __restrict, void ** __restrict,
+	    int (*)(const void *, const void *));
+void	*tfind(const void *, void * const *,
+	    int (*)(const void *, const void *));
+void	*tsearch(const void *, void **, 
+	    int (*)(const void *, const void *));
+void      twalk(const void *, void (*)(const void *, VISIT, int));
+__END_DECLS
+
+#endif /* !_SEARCH_H_ */