From a6afbaeb3be396c0fdea3b9077d9256c59edcfca Mon Sep 17 00:00:00 2001
From: tadf <tadf@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Tue, 9 Jun 2009 13:43:49 +0000
Subject: 	* lib/cmath.rb (log10): raised exception when the given number
 is 	  a negative real.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@23658 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 lib/cmath.rb | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'lib/cmath.rb')

diff --git a/lib/cmath.rb b/lib/cmath.rb
index 5b261ed6a8..31c5a59c99 100644
--- a/lib/cmath.rb
+++ b/lib/cmath.rb
@@ -47,7 +47,7 @@ module CMath
   end
 
   def log10(z)
-    if z.real?
+    if z.real? and z >= 0
       log10!(z)
     else
       log(z) / log!(10)
-- 
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