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  2. RPG400-L
  3. December 2002

RE: Can an RPG module call another RPG module?

> From: rob@dekko.com
>
> Example 2:  (and I expect arguments from Joe Pluta about the specifics :-)
>   )
> You have a multi level Bill of Materials.  And you want to print the total
> item list, including all subassemblies.

No argument here, Rob.  Bill of materials traversal is absolutely a
recursive function.  However, when I implemented it at SSA I used
stack-based recursion removal, very much like what Rich identified.

The issue with SBRR is that you run into problems when you blow your stack,
and so in a language that statically defines arrays (such as older RPG
variants) you have to allocate all your arrays to some enormous size.

Joe

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