--- trunk/src/compiler/basis/basis-vars.sml	2010/07/28 16:48:27	184
+++ trunk/src/compiler/basis/basis-vars.sml	2010/07/28 17:11:09	185
@@ -167,7 +167,7 @@
 	      end))
 
   (* functions *)
-    val fn_CL = polyVar (N.fn_CL, ty([tensor[N3, N3]] --> Ty.realTy))
+    val fn_CL = monoVar (N.fn_CL, [tensor[N3, N3]] --> Ty.realTy)
 
     val fn_convolve = polyVar (N.fn_convolve, all([DK, NK, SK],
 	    fn [Ty.DIFF k, Ty.DIM d, Ty.SHAPE dd] => let
@@ -236,6 +236,8 @@
   (* internal variables *)
     val i2r = monoVar (Atom.atom "$i2r", [Ty.T_Int] --> Ty.realTy)	(* integer to real conversion *)
     val input = polyVar (Atom.atom "$input", all([TK],
+	      fn [Ty.TYPE tv] => [Ty.T_String] --> Ty.T_Var tv))
+    val optInput = polyVar (Atom.atom "$optional-input", all([TK],
 	      fn [Ty.TYPE tv] => [Ty.T_String, Ty.T_Var tv] --> Ty.T_Var tv))
     end (* local *)
   end

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