Re: Numeric Fields.

[funderwood@xxxxxxxxxxxxxxxxxxxxxxxxxx]

*LIKE DEFINE will simply replicate the definition of the source field. The 
other situations: defining a field as 4,0 in a 'C' specification
means you'll get a packed field.  That's just RPG.  Likewise, for numeric 
data structure fields: they are defined as zoned by default.  As Bob said,
you can change this by specifying 'P' for packed.  If you really want a 
zoned numeric variable, define it in the 'D' specs, not the
'C' specs, and just let the default apply.

The thing to watch out for with numeric data structure fields that are 
defined as zoned is that at program start, these fields contain 
hex blanks, or 4040404040.... unless you initialize them to some other 
value.  Hex blank, '40', fields are the leading cause of 
'Decimal data error' halts.  These result from trying to read from or 
write into zoned or packed numeric fields containing blanks.
The FIXNBR (*ZONED) parameter of the CRTBNDRPG compiler or the 
IGNDECERR(*YES) parm of the CRTRPGPGM compiler
can mitigate this to a degree.


Fred Underwood
North American Stainless
(502) 347-6187

mailto:funderwood@xxxxxxxxxxxxxxxxxxxxxxxxxx




"Venkateshwar V" <venkateshwar.raman@xxxxxxxxx> 
Sent by: rpg400-l-bounces@xxxxxxxxxxxx
05/26/2004 08:10 AM
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Subject
Numeric Fields.






Hi,

It is just out of curiosity that I am asking this question. If I define a 
numeric variable in RPG400 using *LIKE DEFINE (the source field is zones) 
or Z-ADD *Zeros #X with attributes 4,0 it gets defined as packed. But If I 
were to define a field as datastructure subfield with same attributes 
using a datastructure it gets defined as zoned.

Can anyone please explain how and why this happens ?

Reagrds,
Venky
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