[jira] [Assigned] (DAFFODIL-2473) Need bit-wise AND, OR, NOT, and shift operations

["Mike Beckerle (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/DAFFODIL-2473?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Mike Beckerle reassigned DAFFODIL-2473:
---------------------------------------

    Assignee: Samarth Sah

> Need bit-wise AND, OR, NOT, and shift operations
> ------------------------------------------------
>
>                 Key: DAFFODIL-2473
>                 URL: https://issues.apache.org/jira/browse/DAFFODIL-2473
>             Project: Daffodil
>          Issue Type: New Feature
>          Components: Back End, Front End
>    Affects Versions: 3.0.0
>            Reporter: Mike Beckerle
>            Assignee: Samarth Sah
>            Priority: Critical
>
> There are a number of data representations DFDL cannot handle because it cannot manipulate numbers with sufficient flexibility in expressions.
> We need AND, OR, NOT, maybe XOR, and shift left, shift right, and probably arithmetic shift right (which does sign-extension of signed numbers). We should add functions for the whole set of them.
> On signed numbers with specific sizes (long, int, short, byte) these should behave as if the data was binary in 2s complement representation, i.e., as if the most-significant-bit was playing the role of 2s complement sign.
> These operations should all be undefined (Schema Def Error) on decimal, integer, and non-negative integer values, as well as float and double.
> Specifically, these operations are defined on long and its subtypes, and unsignedLong and its subtypes only.
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