merge revision(s) 23943:

	* lib/complex.rb (Numeric#arg): should return NaN for NaN.
	  [ruby-core:24116]


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/branches/ruby_1_8_7@24362 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 1 insertions, 5 deletions

diff --git a/lib/complex.rb b/lib/complex.rb
index fbf50ffece..808cecc95d 100644
--- a/lib/complex.rb
+++ b/lib/complex.rb
@@ -58,11 +58,7 @@ class Numeric
   # See Complex#arg.
   #
   def arg
-    if self >= 0
-      return 0
-    else
-      return Math::PI
-    end
+    Math.atan2!(0, self)
   end
   alias angle arg