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[Bug 2313] Make clearer the relationship between precisionDecimal and IEEE754r

From: <bugzilla@wiggum.w3.org>
Date: Wed, 28 Sep 2005 13:19:28 +0000
To: www-xml-schema-comments@w3.org
Message-Id: <E1EKbqK-0003hn-ND@wiggum.w3.org>


           Summary: Make clearer the relationship between precisionDecimal
                    and IEEE754r
           Product: XML Schema
           Version: 1.1
          Platform: PC
        OS/Version: Windows 2000
            Status: NEW
          Keywords: unclassified
          Severity: normal
          Priority: P2
         Component: XSD Part 2: Datatypes
        AssignedTo: cmsmcq@w3.org
        ReportedBy: noah_mendelsohn@us.ibm.com
         QAContact: www-xml-schema-comments@w3.org

Although we have taken IEEE754r as a prime motivation for doing
precisionDecimal, we seem not to follow the precedent for other types, in that
we do not say in so many words:  "this type is intended, with a few exceptions
described below, to represent the values of IEEE754r floating point decimal", or
whatever the right way to say this is.  The exceptions include the fact that we
have only a single NaN, and maybe some others I'm forgetting.

Furthermore, it might be useful to state non-normatively, in an appendix or
otherwise, what the correspondences are.  I.e. to explain how to map value space
properties such as artithmeticPrecision to their equivalents in IEEE754r.
Received on Wednesday, 28 September 2005 13:19:56 UTC

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