* 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

1 files changed, 6 insertions, 0 deletions

diff --git a/lib/cmath.rb b/lib/cmath.rb
index 4751f6c4a1..e21f9d8947 100644
--- a/lib/cmath.rb
+++ b/lib/cmath.rb
@@ -314,3 +314,9 @@ module CMath
   module_function :lgamma
 
 end
+
+class Object
+  def real?
+    raise TypeError, "Numeric Number required"
+  end
+end