Re: %DECPOS doesn't work with %DEC

What does "palliate" mean?


Shannon O'Donnell


----- Original Message ----- 
From: "Buck" <buck.calabro@xxxxxxxxxxxx>
To: <rpg400-l@xxxxxxxxxxxx>
Sent: Wednesday, October 29, 2003 4:12 PM
Subject: %DECPOS doesn't work with %DEC


> I am preparing a class on RPG IV for internal use, and was tinkering with
> the examples in the RPG Reference regarding intermediate precision.
> Straight from the reference, I have this:
>
> d fld1            s             15p 4
> d fld2            s             15p 2 inz(4)
> d fld3            s              5p 2 inz(100)
> d fld4            s              9p 4 inz(1)
> d fld5            s              9p 4 inz(2)
>
> eval      fld1=fld2/(((fld3/100)*fld4)+fld5)
>
> Of course, it returns 1.0000, exactly as expected.  In an attempt to
> demonstrate (again, from the manual) that %DEC can be used to palliate
this,
> I tried:
>
> eval
>
>             fld2/(((fld3/100)*fld4)+fld5):
>             %size(fld1):
>             %decpos(fld1))
>
> *RNF0329 30 The third parameter for %DEC or %DECH is not valid.
>
> Ah, well.  That's too bad, because it would open a programmatic way to
> influence the intermediate calculations in the same way that re-ordering
> Traditional Operation Codes did - in essence, twisting the compiler's arm
to
> use the intermediate results that *I* want.  As it stands, I need to do
> this:
>
> eval
>
>             fld2/(((fld3/100)*fld4)+fld5):
>             %size(fld1):
>             4)
>
> Just an observation for anyone interested in intermediate precision, and
> detecting its results programmatically.
>   --buck
>
>
>
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