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 99c6155847496adaad59a9f95aa87adcf676eff9..f6d72c569b64dc70df573f837d92e866c3de7e28 100644 (file)
--- 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)