tadf	2011-07-23 21:14:43 +0900 (Sat, 23 Jul 2011)

  New Revision: 32643

  http://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=rev&revision=32643

  Log:
    * lib/cmath.rb: should return a real number if possible.

  Modified files:
    trunk/ChangeLog
    trunk/lib/cmath.rb

Index: ChangeLog
===================================================================
--- ChangeLog	(revision 32642)
+++ ChangeLog	(revision 32643)
@@ -1,3 +1,7 @@
+Sat Jul 23 21:14:00 2011  Tadayoshi Funaba  <tadf@d...>
+
+	* lib/cmath.rb: should return a real number if possible.
+
 Sat Jul 23 20:12:52 2011  NARUSE, Yui  <naruse@r...>
 
 	* test/rake/test_rake_functional.rb (setup): Use __FILE__ for the base
Index: lib/cmath.rb
===================================================================
--- lib/cmath.rb	(revision 32642)
+++ lib/cmath.rb	(revision 32643)
@@ -147,7 +147,7 @@
   ##
   # returns the principal value of the cube root of +z+
   def cbrt(z)
-    Complex(z) ** (1.0/3)
+    z ** (1.0/3)
   end
 
   ##

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