[OASIS Issue Tracker] (ODATA-919) Specify the result type for each operation based on operator types

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    [ https://issues.oasis-open.org/browse/ODATA-919?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=65469#comment-65469 ] 

Ralf Handl commented on ODATA-919:
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The proposed rules were crafted before we introduced Scale="floating" for Edm.Decimal with ODATA-557, which further complicates the question whether Decimal is "larger" or "smaller" than Double.

DECFLOAT16 and Double seem to be "similar" in size, see https://en.wikipedia.org/wiki/Decimal64_floating-point_format and https://en.wikipedia.org/wiki/Double-precision_floating-point_format 

DECFLOAT34 is clearly "larger" than Double.

Decimal with fixed or variable scale and Precision up to 15 are clearly "smaller" than Double.

Decimal with Precision 16 or larger could be treated as "smaller" than Double, ignoring the rounding deviation caused by the 51-bit mantissa of Double.

> Specify the result type for each operation based on operator types
> ------------------------------------------------------------------
>
>                 Key: ODATA-919
>                 URL: https://issues.oasis-open.org/browse/ODATA-919
>             Project: OASIS Open Data Protocol (OData) TC
>          Issue Type: Improvement
>          Components: URL Conventions
>    Affects Versions: V4.0_OS
>            Reporter: Martin Zurmuehl
>            Assignee: Ralf Handl
>             Fix For: V4.01_CSD02
>
>
> See ODATA-785 for a description of the issue --> Comments Section.



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