From ab786f6299b86aa9e58e7e9a5d664faa4de7eb85 Mon Sep 17 00:00:00 2001
From: Bruce Momjian <bruce@momjian.us>
Date: Sat, 23 Feb 2002 01:01:30 +0000
Subject: Make factorial(0) return 1, as per spec.

---
 src/backend/utils/adt/int.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

(limited to 'src/backend/utils/adt/int.c')

diff --git a/src/backend/utils/adt/int.c b/src/backend/utils/adt/int.c
index e04ae89cea0..99c61558474 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 1.47 2001/06/07 00:09:29 momjian Exp $
+ *	  $Header: /cvsroot/pgsql/src/backend/utils/adt/int.c,v 1.48 2002/02/23 01:01:30 momjian Exp $
  *
  *-------------------------------------------------------------------------
  */
@@ -784,7 +784,9 @@ int4fac(PG_FUNCTION_ARGS)
 	int32		arg1 = PG_GETARG_INT32(0);
 	int32		result;
 
-	if (arg1 < 1)
+	if (arg1 == 0)
+		result = 1;
+	else if (arg1 < 1)
 		result = 0;
 	else
 		for (result = 1; arg1 > 0; --arg1)
-- 
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