working

1 files changed, 43 insertions, 0 deletions

diff --git a/vere/pkg/noun/jets/b/slag.c b/vere/pkg/noun/jets/b/slag.c
new file mode 100644
index 0000000..fad88b0
--- /dev/null
+++ b/vere/pkg/noun/jets/b/slag.c
@@ -0,0 +1,43 @@
+/// @file
+
+#include "jets/q.h"
+#include "jets/w.h"
+
+#include "noun.h"
+
+
+  u3_noun
+  u3qb_slag(u3_atom a, u3_noun b)
+  {
+    if ( u3_nul == b ) {
+      return u3_nul;
+    }
+    else if ( !_(u3a_is_cat(a)) ) {
+      return u3m_bail(c3__fail);
+    }
+    else {
+      c3_w len_w = a;
+
+      while ( len_w ) {
+        if ( c3n == u3du(b) ) {
+          return u3_nul;
+        }
+        b = u3t(b);
+        len_w--;
+      }
+      return u3k(b);
+    }
+  }
+  u3_noun
+  u3wb_slag(u3_noun cor)
+  {
+    u3_noun a, b;
+
+    if ( (c3n == u3r_mean(cor, u3x_sam_2, &a, u3x_sam_3, &b, 0)) ||
+         (c3n == u3ud(a) && u3_nul != b) )
+    {
+      return u3m_bail(c3__exit);
+    } else {
+      return u3qb_slag(a, b);
+    }
+  }