1 files changed, 12 insertions, 0 deletions
diff --git a/src/libdatastruct/avlnode_extreme.c b/src/libdatastruct/avlnode_extreme.c
new file mode 100644
index 0000000..42d991d
--- /dev/null
+++ b/src/libdatastruct/avlnode_extreme.c
@@ -0,0 +1,12 @@
+/* ISC license. */
+
+#include <errno.h>
+#include <skalibs/avlnode.h>
+
+int avlnode_extreme (avlnode const *s, unsigned int max, unsigned int r, int h, unsigned int *k)
+{
+  register unsigned int i = avlnode_extremenode(s, max, r, h) ;
+  if (i >= max) return (errno = ESRCH, 0) ;
+  *k = s[i].data ;
+  return 1 ;
+}