Re: RPGLE - DS Subfields as parameters or contiguous memory for stand

>From: "Walden H. Leverich" <WaldenL@TechSoftInc.com>
>Date: Tue, 18 Dec 2001 11:08:59 -0500
>
>Ideally, I'd like to do the following (the real code has >40 parms):
>
>DP1PARM           ds
>D P1BCST                         1
>D p1bbnb                         5p 0
>D p1bdst                         1
>C     *entry        plist
>C                   parm                    p1bcst
>C                   parm                    p1bbnb
>C                   parm                    p1bdst
>C                   call      'cblpgm'
>C                   parm                    p1parm
>
>But I don't seem to be able to pass subfields as parms. So:
>
>1) Is there a way I can pass subfields?
>-or-
>2) If I define a series of standalone fields like:
>
>D W1BCST          s              1
>D W1bbnb          s              5p 0
>D W1bdst          s              1
>
>Are they GUARANTEED to be contiguous in memory? If so I could pass these
>parms into the RPGLE program and then do a memcpy of the first parm for
the
>total number of bytes in all parms into the datastructure to move all the
>parms in one shot.

Walden, they're not even _likely_ to be contiguous in memory.

Since the actual storage for parameters belongs from the caller,
the layout of the storage depends on the COBOL program.  But
you can't count on any storage being contiguous unless it's
actually in a data structure; this is true of any language.
If the storage for those parameters was already contiguous, you
wouldn't need this RPG program.

Barbara Morris