1 files changed, 72 insertions, 0 deletions
diff --git a/vere/pkg/noun/jets/d/by_int.c b/vere/pkg/noun/jets/d/by_int.c
new file mode 100644
index 0000000..5caa8aa
--- /dev/null
+++ b/vere/pkg/noun/jets/d/by_int.c
@@ -0,0 +1,72 @@
+/// @file
+
+#include "jets/k.h"
+#include "jets/q.h"
+#include "jets/w.h"
+
+#include "noun.h"
+
+u3_noun
+u3qdb_int(u3_noun a, u3_noun b)
+{
+  if (  (u3_nul == a)
+     || (u3_nul == b) )
+  {
+    return u3_nul;
+  }
+  else {
+    u3_noun n_a, l_a, r_a;
+    u3_noun n_b, l_b, r_b;
+    u3_noun p_n_a, q_n_a;
+    u3_noun p_n_b, q_n_b;
+    u3x_trel(a, &n_a, &l_a, &r_a);
+    u3x_trel(b, &n_b, &l_b, &r_b);
+    u3x_cell(n_a, &p_n_a, &q_n_a);
+    u3x_cell(n_b, &p_n_b, &q_n_b);
+
+    if ( c3y == u3qc_mor(p_n_a, p_n_b) ) {
+      if ( c3y == u3r_sing(p_n_b, p_n_a) ) {
+        return u3nt(u3k(n_b), u3qdb_int(l_a, l_b), u3qdb_int(r_a, r_b));
+      }
+      else if ( c3y == u3qc_gor(p_n_b, p_n_a) ) {
+        u3_noun new_l_b = u3nt(u3k(n_b), u3k(l_b), u3_nul);
+        u3_noun   new_a = u3qdb_int(l_a, new_l_b);
+
+        u3z(new_l_b);
+        return u3kdb_uni(new_a, u3qdb_int(a, r_b));
+      }
+      else {
+        u3_noun new_r_b = u3nt(u3k(n_b), u3_nul, u3k(r_b));
+        u3_noun   new_a = u3qdb_int(r_a, new_r_b);
+
+        u3z(new_r_b);
+        return u3kdb_uni(new_a, u3qdb_int(a, l_b));
+      }
+    }
+    else if ( c3y == u3r_sing(p_n_a, p_n_b) ) {
+      return u3nt(u3k(n_b), u3qdb_int(l_a, l_b), u3qdb_int(r_a, r_b));
+    }
+    else if ( c3y == u3qc_gor(p_n_a, p_n_b) ) {
+      u3_noun new_l_a = u3nt(u3k(n_a), u3k(l_a), u3_nul);
+      u3_noun   new_a = u3qdb_int(new_l_a, l_b);
+
+      u3z(new_l_a);
+      return u3kdb_uni(new_a, u3qdb_int(r_a, b));
+    }
+    else {
+      u3_noun new_r_a = u3nt(u3k(n_a), u3_nul, u3k(r_a));
+      u3_noun   new_a = u3qdb_int(new_r_a, r_b);
+
+      u3z(new_r_a);
+      return u3kdb_uni(new_a, u3qdb_int(l_a, b));
+    }
+  }
+}
+
+u3_noun
+u3wdb_int(u3_noun cor)
+{
+  u3_noun a, b;
+  u3x_mean(cor, u3x_sam, &b, u3x_con_sam, &a, 0);
+  return u3qdb_int(a, b);
+}