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Posted to dev@qpid.apache.org by "Andrew Stitcher (JIRA)" <ji...@apache.org> on 2018/03/13 02:15:00 UTC
[jira] [Commented] (PROTON-1160) [Python binding] decimal32 and
decimal64 are sent byte reversed
[ https://issues.apache.org/jira/browse/PROTON-1160?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16396406#comment-16396406 ]
Andrew Stitcher commented on PROTON-1160:
-----------------------------------------
I'm not sure that "sent byte reversed" really has any meaning in the context of the proton implementation of the decimalxx types: These types are actually floating point types. But proton does not implement that floating point semantic in any code whatever.
So it is perhaps moot to say that the python binding values are sent byte reversed, since it is not defined what values we are actually sending!
For what it is worth I think the Ruby binding would agree with the Python byte stream, so perhaps the C++ binding is in the minority here!
> [Python binding] decimal32 and decimal64 are sent byte reversed
> ---------------------------------------------------------------
>
> Key: PROTON-1160
> URL: https://issues.apache.org/jira/browse/PROTON-1160
> Project: Qpid Proton
> Issue Type: Bug
> Components: python-binding
> Reporter: Kim van der Riet
> Assignee: Kim van der Riet
> Priority: Major
>
> When sending {{decimal32}} and {{decimal64}} types to or from the Python binding, the byte order of the numbers are reversed. This does not apply to the {{decimal128}} type.
> It is noteworthy that this bug was exposed by qpid-interop-test when run against the C++ binding. In C++, these types are all based on a byte array, whereas in the Python binding, {{decimal32}} and {{decimal64}} are derived from Python types {{int}} and {{long}} respectively, while {{decimal128}} is derived from Python type {{bytes}}.
> Decimal32:
> {noformat}
> sent:['0x00000000', '0x40490fdb', '0xc02df854', '0xff7fffff']
> received:['0x00000000', '0xdb0f4940', '0x54f82dc0', '0xffff7fff']
> {noformat}
> Decimal64:
> {noformat}
> sent:['0x0000000000000000', '0x400921fb54442eea', '0xc005bf0a8b145fcf', '0xffefffffffffffff']
> received:['0x0000000000000000', '0xea2e4454fb210940', '0xcf5f148b0abf05c0', '0xffffffffffffefff']
> {noformat}
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