I do not expect significant use of DFP in existing COBOL systems.  The
COBOL community is a highly conservative one that comes to terms with
new technology only very slowly or not at all, witness the recent
discussion here of the wide continuing use of AMODE(24).

I did think it useful to turn Frank's question around.  What can be
done at all well in packed decimal is a very small proper subset of
what can be done very well indeed in DFP, and this needs to be
understood.  There is no  technical rationale for any further use pf
packed-decimal arithmetic in any context, although the data type
itself does and will continue to have its uses in conversions from
computational to display values asnd vice versa.

These things said, inertia and reactionary managements will be
barriers to significant use of DFP even in new applications.  It is
always possible to find that there is no economic justification for a
technical innovation, to make a persuasive case of this sort to those
who anyway want to hear it.

I do expect that vendors and ISVs will make much use of DFP under the
covers, where the advantages it confers can be exploited without
disturbing customers.  This indeed is already the case with one very
celebrated RDBM, which has used BFP (sic) instead of packed decimal
internally  for many years but does of course externalize values as
packed-decimal ones on demand.

John Gilmore, Ashland, MA 01721 - USA

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