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src/HOL/Int.thy
changeset 33056 791a4655cae3
parent 32437 66f1a0dfe7d9
child 33296 a3924d1069e5 
--- a/src/HOL/Int.thy	Wed Oct 21 16:57:57 2009 +0200
+++ b/src/HOL/Int.thy	Wed Oct 21 17:34:35 2009 +0200
@@ -1614,7 +1614,7 @@
 context ring_1
 begin
 
-lemma of_int_of_nat [nitpick_const_simp]:
+lemma of_int_of_nat [nitpick_simp]:
   "of_int k = (if k < 0 then - of_nat (nat (- k)) else of_nat (nat k))"
 proof (cases "k < 0")
   case True then have "0 \<le> - k" by simp
isabelle