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Subject: [OASIS Issue Tracker] (ODATA-784) Need to specify the behaviour of arithmetic operators on Decimal type


     [ https://issues.oasis-open.org/browse/ODATA-784?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Evan Ireland updated ODATA-784:
-------------------------------

    Proposal: 
If A and B are values of type decimal, with scales scaleof(A) and scaleof(B), then:

scaleof(A add B) = max(scaleof(A), scaleof(B))
scaleof(A sub B) = max(scaleof(A), scaleof(B))
scaleof(A mul B) = scaleof(A) + scaleof(B)
scaleof(A div B) = scaleof(A)

For decimal values with "floating" scale, additional consideration (or separate rules?) may be required.


  was:
If A and B are values of type decimal, with scales scaleof(A) and scaleof(B), then:

scaleof(A add B) = max(scaleof(A), scaleof(B))
scaleof(A sub B) = max(scaleof(A), scaleof(B))
scaleof(A mul B) = scaleof(A) + scaleof(B)
scaleof(A div B) = scaleof(A)

For decimal values with floating scale, additional consideration (or separate rules?) may be required.



> Need to specify the behaviour of arithmetic operators on Decimal type
> ---------------------------------------------------------------------
>
>                 Key: ODATA-784
>                 URL: https://issues.oasis-open.org/browse/ODATA-784
>             Project: OASIS Open Data Protocol (OData) TC
>          Issue Type: Improvement
>          Components: OData URL Conventions
>    Affects Versions: V4.0_OS
>         Environment: Proposed
>            Reporter: Evan Ireland
>            Priority: Minor
>             Fix For: V4.01_WD01, V4.0_ERRATA03
>
>
> The rules for scale of results of decimal arithmetic operators are not specified.



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