Re: purpose of Z-ADD?

Sheesh, I just re-read your post. My apologies.

"Dennis"<iseries@xxxxxxxxxxxx> wrote:

Vern, I seem to remember coding Z-ADD on my System/3 coding forms.

I think it was not part of RPG (1), but I am fairly certain it was part
of RPG/II from the beginning.

"Vern Hamberg"<vhamberg@xxxxxxxxxxx> wrote:

Buzz

EVAL is a late addition to RPG - it was never a part of RPG III. It

was

added as an op-code that let you put free-form expressions in an
expanded factor 2. EVALR came a little later, to provide what MOVE

used

to do, vs. MOVEL.

So we used to have to use Z-ADD to set a variable to a value.

HTH
Vern

On 3/24/2011 11:09 AM, Buzz Fenner wrote:

Since it was mentioned here and tickled a neuron...I might as well

ask:

I've always wondered, what is the purpose of Z-ADD? Isn't it just

the

same to EVAL = 0, or EVAL = whatever you really want it to be? Or

is

this just a legacy leftover that only still exists in order to mess

with

my mind?

Thanks! :)

Luke,

In case it hasn't been mentioned (or it has and I missed it), when

pumping

numeric values from one variable to another -of a larger length than

the

originating variable- if it wasn't 'initialized' via z-add0 prior to

the

MOVE it resulted in an execution error with invalid data in a

numeric

field.

Ah, the bad old days...

Buzz

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