[ https://issues.oasis-open.org/browse/ODATA-1004?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Michael Pizzo updated ODATA-1004:
---------------------------------
Fix Version/s: V4.01_WD01
Component/s: OData URL Conventions
> Sign of Modulo for positive right operand
> -----------------------------------------
>
> Key: ODATA-1004
> URL: https://issues.oasis-open.org/browse/ODATA-1004
> Project: OASIS Open Data Protocol (OData) TC
> Issue Type: Bug
> Components: OData URL Conventions
> Affects Versions: V4.0_ERRATA03
> Environment: [Proposed]
> Reporter: Michael Pizzo
> Fix For: V4.01_WD01
>
>
> The current description of Modulo reads:
> "If the right operand is negative, the sign of the result is the same as the sign of the left operand. If the right operand is zero, the request fails."
> This leaves (intentionally?) ambiguous what the sign of the result should be if the right operand is positive.
> Most programming languages appear to always use the sign of the left operand (C/C++, CoffeeScript, Fortran, Java, JavaScript, PHP, SQL, VB, XBase++,...) while some use the sign of the right operand (Ada, COBOL, Common LISP, Haskell, Excel, PERL, Python, R, Ruby,...) and some return a positive result always, but I didn't find any examples where the result was the sign of the left operand if, and only if, the right operand was negative.
> Note that MOST of the languages that use the sign of the right operand have variants for returning the sign of the left operand.
> We could specify:
> 1) Sign is always the sign of the left operand (most commonly supported)
> 2) Sign is always the sign of the right operand (less commonly supported)
> 3) Sign is always positive
> 4) Sign is undefined
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