From 6b7e6f08b00b178e4df23096c5a6ba3873b5bba8 Mon Sep 17 00:00:00 2001
From: yugui <yugui@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Sat, 10 Oct 2009 11:38:47 +0000
Subject: * math.c (math_atanh): reverted r25279.

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@25287 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 math.c | 1 +
 1 file changed, 1 insertion(+)

(limited to 'math.c')

diff --git a/math.c b/math.c
index 630aa13baa..51caf35c5d 100644
--- a/math.c
+++ b/math.c
@@ -298,6 +298,7 @@ math_atanh(VALUE obj, VALUE x)
     d0 = RFLOAT_VALUE(x);
     d = atanh(d0);
     domain_check(d0, d, "atanh");
+    infinity_check(x, d, "atanh");
     return DBL2NUM(d);
 }
 
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