* lib/cmath.rb: add new methd Object#real?. fix #3137

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@32055 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

ChangeLog

@@ -1,3 +1,7 @@
+Mon Jun 13 19:46:21 2011  Keiju Ishitsuka  <keiju@ishitsuka.com>
+
+	* lib/cmath.rb: add new methd Object#real?. fix #3137
+
 Mon Jun 13 18:52:00 2011  Kenta Murata  <mrkn@mrkn.jp>
 
 	* ext/bigdecimal/bigdecimal.c (is_kind_of_BigDecimal): new function to

lib/cmath.rb

@@ -314,3 +314,9 @@ module CMath
   module_function :lgamma
 
 end
+
+class Object
+  def real?
+    raise TypeError, "Numeric Number required"
+  end
+end