Re: Problem with packed decimal

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.
--------------------------------------------------------------------
FlyByNight Software OS/400, i5/OS Technical Specialists

http://www.flybynight.com.au/
Phone: +61 2 6657 8251 Mobile: +61 0411 091 400 /"\
Fax: +61 2 6657 8251 \ /
X
ASCII Ribbon campaign against HTML E-Mail / \
--------------------------------------------------------------------



--
This is the C programming iSeries / AS400 (C400-L) mailing list
To post a message email: C400-L@xxxxxxxxxxxx
To subscribe, unsubscribe, or change list options,
visit: http://lists.midrange.com/mailman/listinfo/c400-l
or email: C400-L-request@xxxxxxxxxxxx
Before posting, please take a moment to review the archives
at http://archive.midrange.com/c400-l.