NaN is now 0.0/0 because of 1.8/1.9 compat.

* ext/json/lib/json/common.rb (NaN): Change definition
  of NaN to 0.0/0 for 1.8/1.9 compatibility.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@24730 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,8 @@
+Wed Sep  2 02:32:46 2009  NARUSE, Yui  <naruse@ruby-lang.org>
+
+	* ext/json/lib/json/common.rb (NaN): Change definition
+	  of NaN to 0.0/0 for 1.8/1.9 compatibility.
+
 Wed Sep  2 01:16:32 2009  NARUSE, Yui  <naruse@ruby-lang.org>
 
 	* ext/json: Update to JSON 1.1.9.

ext/json/lib/json/common.rb

@@ -74,7 +74,7 @@ module JSON
   end
   self.create_id = 'json_class'
 
-  NaN           = (-1.0) ** 0.5
+  NaN           = 0.0/0
 
   Infinity      = 1.0/0