From: Bruce Momjian <bruce@momjian.us>
Date: Fri, 7 Jun 2002 23:41:53 +0000 (+0000)
Subject: Fix for  factorial(0::int2) returning 1, from  sugita@sra.co.jp.
X-Git-Tag: REL9_0_0~17722
X-Git-Url: http://git.osdn.net/view?a=commitdiff_plain;h=8a3f34b5585b74833567197b12d6a7e42a8decd9;p=pg-rex%2Fsyncrep.git

Fix for  factorial(0::int2) returning 1, from  sugita@sra.co.jp.
---

diff --git a/src/backend/utils/adt/int.c b/src/backend/utils/adt/int.c
index 99c6155847..f6d72c569b 100644
--- a/src/backend/utils/adt/int.c
+++ b/src/backend/utils/adt/int.c
@@ -8,7 +8,7 @@
  *
  *
  * IDENTIFICATION
- *	  $Header: /cvsroot/pgsql/src/backend/utils/adt/int.c,v 1.48 2002/02/23 01:01:30 momjian Exp $
+ *	  $Header: /cvsroot/pgsql/src/backend/utils/adt/int.c,v 1.49 2002/06/07 23:41:53 momjian Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -800,7 +800,9 @@ int2fac(PG_FUNCTION_ARGS)
 	int16		arg1 = PG_GETARG_INT16(0);
 	int32		result;
 
-	if (arg1 < 1)
+	if (arg1 == 0)
+		result = 1;
+	else if (arg1 < 1)
 		result = 0;
 	else
 		for (result = 1; arg1 > 0; --arg1)