1 files changed, 34 insertions, 0 deletions
diff --git a/vere/pkg/noun/jets/c/ctz.c b/vere/pkg/noun/jets/c/ctz.c
new file mode 100644
index 0000000..ff74e24
--- /dev/null
+++ b/vere/pkg/noun/jets/c/ctz.c
@@ -0,0 +1,34 @@
+/// @file
+
+#include "jets/q.h"
+#include "jets/w.h"
+
+#include "noun.h"
+
+u3_atom
+u3qc_ctz(u3_atom a)
+{
+  c3_w wor_w, i_w = 0;
+
+  if ( 0 == a ) {
+    return 0;
+  }
+
+  do {
+    wor_w = u3r_word(i_w++, a);
+  }
+  while ( !wor_w );
+
+  {
+    c3_w bit_d = i_w - 1;
+    bit_d *= 32;
+    bit_d += c3_tz_w(wor_w);
+    return u3i_chub(bit_d);
+  }
+}
+
+u3_noun
+u3wc_ctz(u3_noun cor)
+{
+  return u3qc_ctz(u3x_atom(u3h(u3t(cor))));
+}