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Posted to dev@daffodil.apache.org by "Brandon Sloane (JIRA)" <ji...@apache.org> on 2019/07/03 02:30:00 UTC

[jira] [Resolved] (DAFFODIL-2165) Add *Double functions to the typeCalc family of functions

     [ https://issues.apache.org/jira/browse/DAFFODIL-2165?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Brandon Sloane resolved DAFFODIL-2165.
--------------------------------------
    Resolution: Fixed

Fixed in commit 100ec3f4177cdf132919532e7107e3503653fe0b

> Add *Double functions to the typeCalc family of functions
> ---------------------------------------------------------
>
>                 Key: DAFFODIL-2165
>                 URL: https://issues.apache.org/jira/browse/DAFFODIL-2165
>             Project: Daffodil
>          Issue Type: New Feature
>          Components: Back End
>    Affects Versions: 2.3.0
>            Reporter: Brandon Sloane
>            Assignee: Brandon Sloane
>            Priority: Major
>             Fix For: 2.4.0
>
>
> For reasons of type safety, most of the functions relating to typeCalc are specialized by their return type. Currently, only Integer and String functions are defined.
> This leave a clear gap where Double is missing, which would be nessasary to use this feature to support a unit-normalization use-case (eg. mil-std style DFI DUI, where degrees may be specified in units of 1/2^n . It is natural to intereperat this using a Int -> Double typeCalc. 
> In theory, we need functions for all primitive types. However, I believe Double should be sufficient for most usecases.



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