From a1c4d60560e76e49a5825d35a40b8a6c32438afa Mon Sep 17 00:00:00 2001
From: takano32 <takano32@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Wed, 18 Nov 2009 03:06:32 +0000
Subject: [PATCH] * math.c (math_gamma): fix incorrect comparison expression.  
 see also [ruby-dev:39709] [Bug #2381]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@25836 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 ChangeLog | 5 +++++
 math.c    | 7 +++----
 2 files changed, 8 insertions(+), 4 deletions(-)

diff --git a/ChangeLog b/ChangeLog
index 623ba10a15..d3c34ffe9a 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+Wed Nov 18 11:57:32 2009  TAKANO Mitsuhiro (takano32)  <tak@no32.tk>
+
+	* math.c (math_gamma): fix incorrect comparison expression.
+	  see also [ruby-dev:39709] [Bug #2381]
+
 Wed Nov 18 11:37:05 2009  NARUSE, Yui  <naruse@ruby-lang.org>
 
 	* io.c (rb_scan_open_args): move path encoding conversion
diff --git a/math.c b/math.c
index 2b877ec64e..1a448b8713 100644
--- a/math.c
+++ b/math.c
@@ -666,14 +666,13 @@ math_gamma(VALUE obj, VALUE x)
     };
     double d0, d;
     double intpart, fracpart;
-    int n;
     Need_Float(x);
     d0 = RFLOAT_VALUE(x);
     fracpart = modf(d0, &intpart);
     if (fracpart == 0.0 &&
-	0 < intpart &&
-	(n = (int)intpart - 1) < numberof(fact_table)) {
-        return DBL2NUM(fact_table[n]);
+        0 < intpart &&
+        intpart - 1 < (double)numberof(fact_table)) {
+        return DBL2NUM(fact_table[(int)intpart - 1]);
     }
     errno = 0;
     d = tgamma(d0);