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

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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
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@ -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)