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HTTP/2 301 date: Sat, 11 Oct 2025 04:27:06 GMT content-type: text/html; charset=iso-8859-1 location: https://www.w3.org/2002/ws/databinding/issues/75/ cf-ray: 98cb9a637c93dfa6-BLR cache-control: max-age=21600 expires: Sat, 11 Oct 2025 10:27:06 GMT x-backend: www-mirrors x-request-id: 98cb9a637c93dfa6 strict-transport-security: max-age=15552000; includeSubdomains; preload content-security-policy: frame-ancestors 'self' https://cms.w3.org/ https://cms-dev.w3.org/; upgrade-insecure-requests cf-cache-status: MISS set-cookie: __cf_bm=JmZyIN7DBTL9VjtZoiIFgNEMZ_mtRFPXa80L5YyHIco-1760156826-1.0.1.1-yWyFLDesGiw7pJq0T2Jj8Nvw7g6Ax8htpaS1VTocfE0dNzmCEXIMgOipxoBzmA2oFSUSKpOhqAxfOWf1ESV3rl8bp6og3Z_nwqcjhPB8IKo; path=/; expires=Sat, 11-Oct-25 04:57:06 GMT; domain=.w3.org; HttpOnly; Secure; SameSite=None vary: Accept-Encoding server: cloudflare alt-svc: h3=":443"; ma=86400 HTTP/2 200 date: Sat, 11 Oct 2025 04:27:07 GMT content-type: text/html; charset=utf-8 content-encoding: gzip content-location: Overview.html last-modified: Sun, 26 Nov 2006 23:00:19 GMT cache-control: max-age=21600 expires: Sat, 11 Oct 2025 10:27:07 GMT vary: Accept-Encoding x-backend: www-mirrors x-request-id: 98cb9a680b66dfa6 strict-transport-security: max-age=15552000; includeSubdomains; preload content-security-policy: frame-ancestors 'self' https://cms.w3.org/ https://cms-dev.w3.org/; upgrade-insecure-requests cf-cache-status: BYPASS server: cloudflare cf-ray: 98cb9a680b66dfa6-BLR alt-svc: h3=":443"; ma=86400 ISSUE-75 - Databinding

ISSUE-75

pattern for IEEE754r (floating point numbers)

State:

OPEN

Product:

Advanced

Raised by:

Vladislav Bezrukov

Opened on:

2006-10-19

Description:

A programming language supporting the IEEE 754r floating point spec [1]
needs to express this type in terms of XML Schema 1.0 [2].
This type is directly supported by the XML Schema 1.1 as
precisionDecimal [3].

However the databinding tools based on the XML Schema 1.0 lack the
corresponding schema pattern.

Proposal:
To consider the following Schema Pattern for the new floating point
numbers:

<xsd:schema
        xmlns:xsd="https://www.w3.org/2001/XMLSchema"
        xmlns:pat="https://www.w3.org/2002/ws/databinding/patterns/6/09/"
       
targetNamespace="https://www.w3.org/2002/ws/databinding/patterns/6/09/">

        <xsd:simpleType name="precisionDecimal">
                <xsd:union>
                        <xsd:simpleType>
                                <xsd:restriction base="xsd:decimal">
                                        <xsd:totalDigits value="16"/>
                                </xsd:restriction>
                        </xsd:simpleType>
                        <xsd:simpleType>
                                <xsd:restriction base="xsd:double"/>
                        </xsd:simpleType>
                        <xsd:simpleType>
                                <xsd:restriction base="xsd:string">
                                        <xsd:enumeration value="NaN"/>
                                        <xsd:enumeration value="-INF"/>
                                </xsd:restriction>
                        </xsd:simpleType>
                </xsd:union>
        </xsd:simpleType>

</xsd:schema>

We are aware that value space of the xsd:double is smaller than
xsd11:precisionDecimal. However we have found nothing better than it.
Any comments are very welcome.

Related emails:

ISSUE-75: pattern for IEEE754r (floating point numbers) (from dean+cgi@w3.org on 2006-10-19)
Agenda: XML Schema Patterns for Databinding telcon 24 October 2006 (from paul.downey@bt.com on 2006-10-24)
RE: ISSUE-75: pattern for IEEE754r (floating point numbers) (from paul.downey@bt.com on 2006-11-01)
Agenda: XML Schema Patterns for Databinding telcon 28 November 2006 (from paul.downey@bt.com on 2006-11-26)

Related notes:

No additional notes.

Original Source | Taken Source

Databinding Issue Tracking

ISSUE-75

pattern for IEEE754r (floating point numbers)

Related notes: