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Posted to issues@arrow.apache.org by "Paul Taylor (JIRA)" <ji...@apache.org> on 2019/02/14 21:41:00 UTC

[jira] [Created] (ARROW-4578) [JS] Float16Vector toArray should be zero-copy

Paul Taylor created ARROW-4578:
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             Summary: [JS] Float16Vector toArray should be zero-copy
                 Key: ARROW-4578
                 URL: https://issues.apache.org/jira/browse/ARROW-4578
             Project: Apache Arrow
          Issue Type: Bug
          Components: JavaScript
    Affects Versions: JS-0.4.0
            Reporter: Paul Taylor
            Assignee: Paul Taylor
             Fix For: JS-0.4.1


The {{Float16Vector#toArray()}} implementation currently transforms each half float into a single float, and returns a Float32Array. All the other {{toArray()}} implementations are zero-copy, and this deviation would break anyone expecting to give two-byte half floats to native APIs like WebGL. We should instead include {{Float16Vector#toFloat32Array()}} and {{Float16Vector#toFloat64Array()}} convenience methods that do rely on copying.



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