1 files changed, 49 insertions, 0 deletions
diff --git a/newlib/libc/search/tdestroy.c b/newlib/libc/search/tdestroy.c
new file mode 100644
index 000000000..2f8aae695
--- /dev/null
+++ b/newlib/libc/search/tdestroy.c
@@ -0,0 +1,49 @@
+/*	$NetBSD: tdelete.c,v 1.2 1999/09/16 11:45:37 lukem Exp $	*/
+
+/*
+ * Tree search generalized from Knuth (6.2.2) Algorithm T just like
+ * the AT&T man page says.
+ *
+ * The node_t structure is for internal use only, lint doesn't grok it.
+ *
+ * Written by reading the System V Interface Definition, not the code.
+ *
+ * Totally public domain.
+ */
+
+#include <sys/cdefs.h>
+#if 0
+#if defined(LIBC_SCCS) && !defined(lint)
+__RCSID("$NetBSD: tdelete.c,v 1.2 1999/09/16 11:45:37 lukem Exp $");
+#endif /* LIBC_SCCS and not lint */
+#endif
+
+#include <assert.h>
+#define _SEARCH_PRIVATE
+#include <search.h>
+#include <stdlib.h>
+
+
+/* Walk the nodes of a tree */
+static void
+trecurse(root, free_action)
+	node_t *root;	/* Root of the tree to be walked */
+	void (*free_action)(void *);
+{
+  if (root->llink != NULL)
+    trecurse(root->llink, free_action);
+  if (root->rlink != NULL)
+    trecurse(root->rlink, free_action);
+
+  (*free_action) ((void *) root->key);
+  free(root);
+}
+
+void
+tdestroy (void *vrootp, void (*freefct)(void *))
+{
+  node_t *root = (node_t *) vrootp;
+
+  if (root != NULL)
+    trecurse(root, freefct);
+}