# HG changeset patch
# User huffman
# Date 1187722338 -7200
# Node ID 000327cea3eb2fd581b9dd3e73c0caea96777688
# Parent  b57c48f7e2d48077838c480ef3c03f0f5f0873b1
replace iszero_number_of_Pls with iszero_0 in rel_simps

diff -r b57c48f7e2d4 -r 000327cea3eb src/HOL/Numeral.thy
--- a/src/HOL/Numeral.thy	Tue Aug 21 20:51:10 2007 +0200
+++ b/src/HOL/Numeral.thy	Tue Aug 21 20:52:18 2007 +0200
@@ -543,12 +543,14 @@
 text {* Simplification of relational operations *}
 
 lemmas rel_simps [simp] = 
-  eq_number_of_eq iszero_number_of_Pls nonzero_number_of_Min
+  eq_number_of_eq iszero_0 nonzero_number_of_Min
   iszero_number_of_0 iszero_number_of_1
   less_number_of_eq_neg
   not_neg_number_of_Pls not_neg_0 not_neg_1 not_iszero_1
   neg_number_of_Min neg_number_of_BIT
   le_number_of_eq
+(* iszero_number_of_Pls would never be used
+   because its lhs simplifies to "iszero 0" *)
 
 
 subsection {* Simplification of arithmetic when nested to the right. *}