Decimal128 DataType about ua-nodeset HOT 6 CLOSED

Decimal type has now been official added to Part 6 1.04 RC.
It matches the Java BigDecimal type.

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There is an open mantis issue to add a Decimal as a built subtype of number. It should be be removed from the published NodeSet since the WG has not finalized the updates to the spec.

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Is this happening in 1.04 or is it not that far along?

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It won't be in the RC because it lower priority than PubSub, JSON, OAuth2 and WebSocket support.
ISA95 needs it so will have to happen soon.

BTW: Any feedback you have on the concept would be helpful. The idea is the type would be a ByteString on the wire but at the application level the DataType would tell applications that it is a Decimal with a known encoding (there is an RFC for decimals). Would that be a problem for your stack?

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If Decimal128 is supposed to be an IEEE-754 quadruple-precision then it's going to be a pain to support in Java - there's no built-in equivalent type or parsing logic for this :(

The closest we have is the BigDecimal type which is an arbitrary precision signed decimal type. Seems mostly suited to being created from a string representation though.

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You can find all of the WG information on the topic here:
https://opcfoundation-onlineapplications.org/mantis/view.php?id=2060

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