RE: notted boolean expressions (was: output specs and indicators)

NOT is a unary operator and is performed prior to the AND.  See the operator
precedence section in the RPG Reference.


               if           NOT *IN99 and *IN98 and *IN97
 Is the same as this...
               if           (NOT *IN99) and *IN98 and *IN97

You can test if you want but I know it's correct :)

Scott Mildenberger

> -----Original Message-----
> From: Bob Cozzi [mailto:cozzi@rpgiv.com]
> Sent: Monday, December 02, 2002 2:28 PM
> To: rpg400-l@midrange.com
> Subject: RE: notted boolean expressions (was: output specs and
> indicators)
>
>
> Well????
> Maybe not. :)
> NOT is supposed to be done last, but... I haven't had the need to test
> is, since I'm always using parens "to be certain" the logic
> is the way I
> think it should be.
>
> So, what we're asking is this....
>
>               if           NOT *IN99 and *IN98 and *IN97
> The same as...
>               if           NOT (*IN99 and *IN98 and *IN97)
>
> Or the same as this...
>               if           (NOT *IN99) and *IN98 and *IN97
>
> I suppose a test is in order.
>