RE: Do you use BITOF?

Waaaaaaaaayyyyy back when (S/3 days) we used bit flag fields to conserve disk 
space also.


Joel Fritz <JFritz@xxxxxxxxxxxxxxxx> wrote:

I've really never thought about it till today, but RPG didn't have an
integer data type until RPGIV. Languages that use bit ops a lot use
integers as an array of flags or for something else where the value of
particular bits might be useful. Often it's for conserving space. Using
bit ops without an integer data type is painful.

I've seen biton and bitoff used for one thing in RPG code that I've
worked on. It was someone's idea of a good way to conserve disk space
in a single field nearly twenty years ago. Because it happened to be in
a file that was important to many different facets of the business the
methods for assigning the value and retrieving it have been copied over
and over again to different programs. 

> -----Original Message-----
> From: rpg400-l-bounces@xxxxxxxxxxxx
> [mailto:rpg400-l-bounces@xxxxxxxxxxxx] On Behalf Of Alan Campin
> Sent: Monday, June 13, 2005 3:05 PM
> To: RPG programming on the AS400 / iSeries
> Subject: RE: Do you use BITOF?
>
> I took the same test. I thought it was a joke and it was
> better than some I have taken lately. Everyone of the test I
> have taken lately have been called ILE RPG or RPG IV and all
> they were about was RPG III and some of them looked like
> tests for RPG II.
>
> The only good test I ever took was the IBM RPG certification
> several years ago and I was surprised how much ILE RPG it
> had. I had been doing ILE for 2 years already so it was easy for me.
>
> Used BITON and BITOFF in RPG III to set Hex values years ago.
> IBM had example of how to do without BITON and BITOFF so have
> functions that do that now. That is only use I ever found for
> them. Like I said, half the questions on the Brainbench
> should never been on the test.
>

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