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-rw-r--r--libc-top-half/musl/src/search/twalk.c22
1 files changed, 22 insertions, 0 deletions
diff --git a/libc-top-half/musl/src/search/twalk.c b/libc-top-half/musl/src/search/twalk.c
new file mode 100644
index 0000000..53821cd
--- /dev/null
+++ b/libc-top-half/musl/src/search/twalk.c
@@ -0,0 +1,22 @@
+#include <search.h>
+#include "tsearch.h"
+
+static void walk(const struct node *r, void (*action)(const void *, VISIT, int), int d)
+{
+ if (!r)
+ return;
+ if (r->h == 1)
+ action(r, leaf, d);
+ else {
+ action(r, preorder, d);
+ walk(r->a[0], action, d+1);
+ action(r, postorder, d);
+ walk(r->a[1], action, d+1);
+ action(r, endorder, d);
+ }
+}
+
+void twalk(const void *root, void (*action)(const void *, VISIT, int))
+{
+ walk(root, action, 0);
+}