As Buck points out, RPG supports double.

As does SQL. Just use CAST or the DOUBLE() function.

set :$Geo03 = double(:Tot03) ** double(1/:$Root03)

You'd probably be best served by declaring $Tot12 as double in the first
place. Possibly $AvgH(x) should be declared as double too.

Otherwise, you might have to cast to double for each term...which would be


On Wed, Feb 17, 2016 at 12:10 PM, Buck Calabro <kc2hiz@xxxxxxxxx> wrote:

On 2/17/2016 11:29 AM, Stephen Mooney wrote:
Thank you for your suggestion. I was using the SQL set function after
calculating the total for three months:
$Tot03 = ($AvgH(1) * $AvgH(2) * $AvgH(3))

SET :$Geo03 = :$Tot03 ** (1/:$Root03);

And that works fine. When I try it with 12 month's, the result field is
not large enough (set to 63P) and the program errs. Same happens with:
$Tot12 = ($AvgH(1) * $AvgH(2) * $AvgH(3) *
$AvgH(4) * $AvgH(5) * $AvgH(6) * $AvgH(7) * $AvgH(8)
* $AvgH(9) * $AvgH(10) * $AvgH(11) * $AvgH(12))
** (1/12);
I think I need to use 'C' because if I declare the result field as
"double" I do not have the restriction I do in RPG.
Regards, Stephen M. Mooney

RPG supports double as dcl-s bigNumber float(8);


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