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Aside from it always equaling 1, how do you get a divide by zero error?
Mathematically: 0 / 0 = 1
Perhaps RPG blows up on this, I've never tried it.

Can you define "Period" in the context of your question, please?
Is it a month, week, year, what?
A good way to find 12 months ago, is to take a D (date) field, and subtract
12 months from it. One line of code in RPG IV, or two lines if you have to
convert from non-date fields to date fields. Three lines if you validate the
non-date field before moving it to a date field.

-Bob Cozzi
www.RPGxTools.com
RPG xTools - Enjoy programming again.

-----Original Message-----
From: rpg400-l-bounces@xxxxxxxxxxxx [mailto:rpg400-l-bounces@xxxxxxxxxxxx]
On Behalf Of DeLong, Eric
Sent: Wednesday, January 04, 2006 6:05 PM
To: 'RPG programming on the AS400 / iSeries'
Subject: RE: Formula Question

Mike,

I'm afraid I'm not seeing what you're trying to do....  Perhaps I'm a bit
rusty at algebra, but to me this formula does not seem to do anything....

( ( ( (period-12) / (period-12) ) * 12 ) - 11 ) + period =
( ( (  1                        ) * 12 ) - 11 ) + period =
( (    12                              ) - 11 ) + period =
(      1                                      ) + period

Huh?


Eric DeLong
Sally Beauty Company
MIS-Project Manager (BSG)
940-297-2863 or ext. 1863



-----Original Message-----
From: rpg400-l-bounces@xxxxxxxxxxxx
[mailto:rpg400-l-bounces@xxxxxxxxxxxx]On Behalf Of Mike Wills
Sent: Wednesday, January 04, 2006 5:32 PM
To: RPG programming on the AS400 / iSeries
Subject: Formula Question


Okay, this may be a difficult one. I have a simple table layout like this.

Company (4,0)
Year(4,0)
Period(2,0)
Amount(15,2)

I want to be able to take an ending period and determine 12 months back from
the ending date and select records in the DB via a select statement. We are
really close with the following formula: ( ( ( (period-12) / (period-12) ) *
12 ) - 11 )+period. A co-worker of mine got this far. If it wasn't for the
whole divide by zero bit as this portion ( (period-12)/(period-12) ) would
for period 12, it would work great. Short of a case statement is there a
better way to handle divide by zero? Or is the a better formula that we
aren't seeing?

--
Mike Wills
koldark@xxxxxxxxx
http://mikewills.name
Want Gmail? Email koldark+gmail@xxxxxxxxx to get on my waiting list.

"There are 10 types of people in the world: those who understand binary, and
those who don't." -Unknown

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