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Posted to jira@arrow.apache.org by "Alessandro Molina (Jira)" <ji...@apache.org> on 2021/10/01 07:28:01 UTC
[jira] [Updated] (ARROW-12768) [C++] Add sign bit checks to
floating-point arithmetic kernels tests
[ https://issues.apache.org/jira/browse/ARROW-12768?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Alessandro Molina updated ARROW-12768:
--------------------------------------
Fix Version/s: (was: 6.0.0)
7.0.0
> [C++] Add sign bit checks to floating-point arithmetic kernels tests
> --------------------------------------------------------------------
>
> Key: ARROW-12768
> URL: https://issues.apache.org/jira/browse/ARROW-12768
> Project: Apache Arrow
> Issue Type: Test
> Components: C++
> Reporter: Eduardo Ponce
> Priority: Minor
> Fix For: 7.0.0
>
>
> There are special cases in arithmetic kernels with floating-point arguments that can result in signed values which are equivalent to their unsigned counterpart when compared with the equality operator. To make the comparisons correct, one needs to also compare the sign bit. For example, *-0.0 == 0.0* is true while *std::signbit(-0.0) == std::signbit(0.0)* is false. This issue also applies to *Inf* and *NaN* values.
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