* math.c (math_gamma): fix incorrect comparison expression.

see also [ruby-dev:39709] [Bug ruby#2381] git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@25836 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
lann · Nov 18, 2009 · a1c4d60 · a1c4d60
1 parent 6c2373e
commit a1c4d60
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diff --git a/ChangeLog b/ChangeLog
@@ -1,3 +1,8 @@
+Wed Nov 18 11:57:32 2009  TAKANO Mitsuhiro (takano32)  <[email protected]>
+
+	* math.c (math_gamma): fix incorrect comparison expression.
+	  see also [ruby-dev:39709] [Bug #2381]
+
 Wed Nov 18 11:37:05 2009  NARUSE, Yui  <[email protected]>
 
 	* io.c (rb_scan_open_args): move path encoding conversion

diff --git 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);