1 files changed, 16 insertions, 2 deletions
diff --git a/lib/complex.rb b/lib/complex.rb
index 1845f30b1f..301879143f 100644
--- a/lib/complex.rb
+++ b/lib/complex.rb
@@ -1,10 +1,24 @@
 require 'cmath'
 
-Object.instance_eval{remove_const :Math}
-Math = CMath
+unless defined?(Math.exp!)
+  Object.instance_eval{remove_const :Math}
+  Math = CMath
+end
 
 def Complex.generic? (other)
   other.kind_of?(Integer) ||
   other.kind_of?(Float)   ||
   other.kind_of?(Rational)
 end
+
+class Complex
+
+  alias image imag
+
+end
+
+class Numeric
+
+  def im() Complex(0, self) end
+
+end