Re: Problem with packed decimal

[Simon Coulter <shc@xxxxxxxxxxxxxxxxx>]

On 27/10/2009, at 12:19 AM, Erik Olsson wrote:

> I'm passing a struct that contains fields of various datatypes,  
> including
> packed decimal, from a RPG program to a C++ srvpgm. The issue is  
> that the
> decimal fields are received on the C++ side as zoned decimal, not as  
> packed
> decimal. I haven't found anything in the Programmer's guide  
> explaining this
> behaviour.

Are you sure the numeric fields are decimal in the RPG program? Your  
description implies the packed decimal fields are contained in a data  
structure. The default behaviour for RPG is to define numeric fields  
in a data structure as zoned decimal (because the data structure is  
presumed to be a big character field--historical reasons). Even if the  
packed decimal field is defined elsewhere in the program (e.g.,  
external file description) it will be remapped to zoned decimal by the  
compiler.

If the above is a correct guess at the cause of your problem then  
you'll either need to modify the RPG program and define the fields as  
packed decimal in the data structure or redefine the C/C++ data  
structure with char[] fields and convert them to decimal before use.

Regards,
Simon Coulter.
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