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New Note for XML Schema Data Types vs IEEE 754 Definitions #621

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fa493e3
add note for xml schema data types vs ieee 754 definitions
sebbader-sap Sep 15, 2025
284fcc8
add changelog
sebbader-sap Sep 15, 2025
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12 changes: 12 additions & 0 deletions documentation/IDTA-01001/modules/ROOT/pages/changelog.adoc
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Expand Up @@ -35,6 +35,18 @@ Note: before V3.0, the security metamodel (now IDTA-01004) and the predefined da
They had separate sections and tables documenting the changes.
====




== Changes V3.1.2 vs. V3.1.1

Minor:

* NEW: add new note for XML Schema data types compared to IEEE 754 definitions (https://github.com/admin-shell-io/aas-specs-metamodel/issues/620[#620])




== Changes V3.1.1 vs. V3.1

Bugfixes:
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4 changes: 4 additions & 0 deletions documentation/IDTA-01001/modules/ROOT/pages/spec-metamodel/datatypes.adoc
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Expand Up @@ -19,6 +19,10 @@ Their definition is outside the scope of this document.
The meaning and format of xsd types is specified in XML Schema 1.0 (https://www.w3.org/TR/xmlschema-2).
The simple type "langString" is specified in the Resource Description Framework (RDF) footnote:[see: https://www.w3.org/TR/rdf11-concepts/].

====
Note: Numeric data types in XML Schema are based on the definitions of IEEE 754 with slight adoptions. For instance, float and double types use different exponent ranges. In any case, solely the XMl Schema data type definitions are applicable for AAS values.
====

See xref:spec-metamodel/constraints.adoc#constraints-for-types[Constraints for Types] for constraints on types.

.Simple Data Types Used in Metamodel
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