Use the FactorialTable only for suitable values.

ryoqun · May 3, 2012 · d13ddab · d13ddab
1 parent 00850c0
commit d13ddab
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/kernel/common/math19.rb b/kernel/common/math19.rb
@@ -49,7 +49,7 @@ def gamma(x)
 
       if fractional == 0.0
         raise DomainError, "gamma" if int < 0
-        return FactorialTable[int - 1]
+        return FactorialTable[int - 1] if int <= FactorialTable.size
       end
     end