Add k versions for the mix, rep and rip jets.

This makes upcoming work a bit easier.

include/jets/k.h

@@ -18,6 +18,11 @@
 
 /* u3kc: tier 3 functions
 */
+  /* u3kc_mix(): binary xor.
+  */
+    u3_noun
+    u3kc_mix(u3_atom a, u3_atom b);
+
   /* u3kc_lsh(): left shift.
   */
     u3_noun
@@ -28,6 +33,16 @@
     u3_noun
     u3kc_rsh(u3_noun a, u3_noun b, u3_noun c);
 
+  /* u3kc_rep(): assemble single.
+  */
+    u3_noun
+    u3kc_rep(u3_atom a, u3_noun b);
+
+  /* u3kc_rip(): disassemble.
+  */
+    u3_noun
+    u3kc_rip(u3_atom a, u3_atom b);
+
 /* u3kd: tier 4 functions
 */
   /* u3kdb_get(): map get for key `b` in map `a` with u3_none.

jets/c/mix.c

@@ -48,4 +48,11 @@
       return u3qc_mix(a, b);
     }
   }
-
+  u3_noun
+  u3kc_mix(u3_atom a,
+           u3_atom b)
+  {
+    u3_noun res = u3qc_mix(a, b);
+    u3z(a); u3z(b);
+    return res;
+  }

jets/c/rep.c

@@ -84,4 +84,11 @@
       return pro;
     }
   }
-
+  u3_noun
+  u3kc_rep(u3_atom a,
+           u3_noun b)
+  {
+    u3_noun res = u3qc_rep(a, b);
+    u3z(a); u3z(b);
+    return res;
+  }

jets/c/rip.c

@@ -81,3 +81,12 @@
       return u3qc_rip(a, b);
     }
   }
+  u3_noun
+  u3kc_rip(u3_atom a,
+           u3_atom b)
+  {
+    u3_noun res = u3qc_rip(a, b);
+
+    u3z(a); u3z(b);
+    return res;
+  }