src/Pure/General/rat.ML
changeset 63209 82cd1d481eb9
parent 63208 3251e9dfea91
child 63210 a0685d2b420b
--- a/src/Pure/General/rat.ML	Wed Jun 01 15:33:45 2016 +0200
+++ b/src/Pure/General/rat.ML	Wed Jun 01 16:02:02 2016 +0200
@@ -108,3 +108,5 @@
 ML_system_overload (fn (a, b) => Rat.lt b a) ">";
 ML_system_overload (fn (a, b) => Rat.le b a) ">=";
 ML_system_overload (not o Rat.eq) "<>";
+
+ML_system_pp (fn _ => fn _ => fn x => Pretty.to_polyml (Pretty.str ("@" ^ Rat.string_of_rat x)));