1 files changed, 46 insertions, 0 deletions
diff --git a/vere/pkg/noun/jets/c/dis.c b/vere/pkg/noun/jets/c/dis.c
new file mode 100644
index 0000000..8c41a36
--- /dev/null
+++ b/vere/pkg/noun/jets/c/dis.c
@@ -0,0 +1,46 @@
+/// @file
+
+#include "jets/q.h"
+#include "jets/w.h"
+
+#include "noun.h"
+
+
+  u3_noun
+  u3qc_dis(u3_atom a,
+           u3_atom b)
+  {
+    c3_w lna_w = u3r_met(5, a);
+    c3_w lnb_w = u3r_met(5, b);
+
+    if ( (lna_w == 0) && (lnb_w == 0) ) {
+      return 0;
+    }
+    else {
+      c3_w     len_w = c3_max(lna_w, lnb_w);
+      c3_w       i_w;
+      u3i_slab sab_u;
+      u3i_slab_from(&sab_u, a, 5, len_w);
+
+      for ( i_w = 0; i_w < len_w; i_w++ ) {
+        sab_u.buf_w[i_w] &= u3r_word(i_w, b);
+      }
+
+      return u3i_slab_mint(&sab_u);
+    }
+  }
+  u3_noun
+  u3wc_dis(u3_noun cor)
+  {
+    u3_noun a, b;
+
+    if ( (c3n == u3r_mean(cor, u3x_sam_2, &a, u3x_sam_3, &b, 0)) ||
+         (c3n == u3ud(a)) ||
+         (c3n == u3ud(b)) )
+    {
+      return u3m_bail(c3__exit);
+    } else {
+      return u3qc_dis(a, b);
+    }
+  }
+