# HG changeset patch
# User bulwahn
# Date 1327323979 -3600
# Node ID 518cc38a1a8c83fa65e691bf81776461bc73338a
# Parent  56fae81902ce254baec7f7b39e3727e20c66274a
adding fun_eq_iff to the preprocessing

diff -r 56fae81902ce -r 518cc38a1a8c src/HOL/Tools/Quickcheck/quickcheck_common.ML
--- a/src/HOL/Tools/Quickcheck/quickcheck_common.ML	Mon Jan 23 14:00:52 2012 +0100
+++ b/src/HOL/Tools/Quickcheck/quickcheck_common.ML	Mon Jan 23 14:06:19 2012 +0100
@@ -262,7 +262,7 @@
     val thy = Proof_Context.theory_of ctxt
     val dest = HOLogic.dest_eq o HOLogic.dest_Trueprop o Thm.prop_of
     val rewrs = map (swap o dest) @{thms all_simps} @
-      (map dest [@{thm not_ex}, @{thm not_all}, @{thm imp_conjL}])
+      (map dest [@{thm not_ex}, @{thm not_all}, @{thm imp_conjL}, @{thm fun_eq_iff}])
     val t' = Pattern.rewrite_term thy rewrs [] (Object_Logic.atomize_term thy t)
     val (vs, body) = strip_all t'
     val vs' = Variable.variant_frees ctxt [t'] vs