[DFDL-WG] Conflicting Info: binaryDecimalVirtualPoint

[Mike Beckerle]

I added the 13.7.1.1 typographical error (binaryVirtualDecimalPoint) to the
tracker for those.

I am amazed that I could miss read 22.1 and 22.2. They seem very clear to
me now. Too little sleep or too much coffee I guess..... Sigh.

So my suggestion here about conflicting info is withdrawn.

Mike Beckerle | OGF DFDL Workgroup Co-Chair | Tresys Technology |
www.tresys.com
Please note: Contributions to the DFDL Workgroup's email discussions are
subject to the OGF Intellectual Property Policy
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On Tue, Oct 9, 2018 at 10:08 AM Steve Hanson <smh at uk.ibm.com> wrote:

> Mike responses in-line below
>
> Also note property mis-spelling as dfdl:binaryVirtualDecimalPoint in
> section 13.7.1.1.
>
> Regards
>
> Steve Hanson
>
> IBM Hybrid Integration, Hursley, UK
> Architect, *IBM DFDL*
> <http://www.ibm.com/developerworks/library/se-dfdl/index.html>
> Co-Chair, *OGF DFDL Working Group* <http://www.ogf.org/dfdl/>
> *smh at uk.ibm.com* <smh at uk.ibm.com>
> tel:+44-1962-815848
> mob:+44-7717-378890
> Note: I work Tuesday to Friday
>
>
>
> From:        Mike Beckerle <mbeckerle.dfdl at gmail.com>
> To:        DFDL-WG <dfdl-wg at ogf.org>
> Date:        03/10/2018 17:04
> Subject:        [DFDL-WG] Conflicting Info: binaryDecimalVirtualPoint
> Sent by:        "dfdl-wg" <dfdl-wg-bounces at ogf.org>
> ------------------------------
>
>
>
> The spec has conflicting info about the property binaryDecimalVirtualPoint
>
> Section 22.1 shows this property only being examined once binaryNumberRep
> is 'packed', 'bcd', or 'ibm4690Packed'.
> SMH: It's also shown for 'binary' and IBM DFDL implements this.
> (Note: doesn't even allow for zoned as this is 'binaryDecimal....", and
> zoned is considered text).
> SMH: Correct. Zoned is text as you say, so VDP is provided by the 'V'
> character.
>
> Section 13.7.1.1 explicitly states this property can be used with
> non-base-10 representations to scale the value.
>
> While the functionality in 13.7.1.1 could be useful to people, I believe
> the intent of this property was to support virtual decimal points, which
> is, in my experience, a COBOL-oriented feature used with base-10
> representations (zoned, text, or packed/bcd). In DFDL v1.0, zoned is
> considered textual, so this property doesn't apply to zoned numbers. That
> leaves only the packed/bcd representations.
>
> I suggest these changes:
> 1)  language in 13.7.1.1 should be revised to avoid requiring this
> property to apply to binaryNumberRep='binary' (aka twos-complement or
> unsigned binary) integers.
> SMH: No, see response above
> 2) The definition of the property should explicitly state it applied only
> to base 10 binary (aka packed/bcd) representations.
> SMH: No, as a corollary.
>
>
> Mike Beckerle | OGF DFDL Workgroup Co-Chair | Tresys Technology |
> *www.tresys.com* <http://www.tresys.com>
> Please note: Contributions to the DFDL Workgroup's email discussions are
> subject to the *OGF Intellectual Property Policy*
> <http://www.ogf.org/About/abt_policies.php>
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