gogotanaka	2015-03-14 20:16:05 +0900 (Sat, 14 Mar 2015)

  New Revision: 49969

  http://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=revision&revision=49969

  Log:
    * math.c (math_gamma): explicit cast to double.

  Modified files:
    trunk/math.c
Index: math.c
===================================================================
--- math.c	(revision 49968)
+++ math.c	(revision 49969)
@@ -875,7 +875,7 @@ math_gamma(VALUE obj, VALUE x) https://github.com/ruby/ruby/blob/trunk/math.c#L875
     if (isinf(d) && signbit(d)) domain_error("gamma");
     if (d == floor(d)) {
 	if (d < 0.0) domain_error("gamma");
-	if (1.0 <= d && d <= NGAMMA_TABLE) {
+	if (1.0 <= d && d <= (double)NGAMMA_TABLE) {
 	    return DBL2NUM(fact_table[(int)d - 1]);
 	}
     }

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