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Make factorial(0) return 1, as per spec.

This commit is contained in:
Bruce Momjian 2002-02-23 01:01:30 +00:00
parent ad0787b2bd
commit ab786f6299
2 changed files with 8 additions and 4 deletions
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6
src/backend/utils/adt/int.c
View File

@ -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)

6
src/backend/utils/adt/int8.c
View File

@ -7,7 +7,7 @@
* Portions Copyright (c) 1994, Regents of the University of California
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/utils/adt/int8.c,v 1.36 2001/11/24 19:57:06 tgl Exp $
* $Header: /cvsroot/pgsql/src/backend/utils/adt/int8.c,v 1.37 2002/02/23 01:01:30 momjian Exp $
*
*-------------------------------------------------------------------------
*/
@ -515,7 +515,9 @@ int8fac(PG_FUNCTION_ARGS)
int64 result;
int64 i;
if (arg1 < 1)
if (arg1 == 0)
result = 1;
else if (arg1 < 1)
result = 0;
else
for (i = arg1, result = 1; i > 0; --i)