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https://issues.apache.org/jira/browse/ARROW-13094?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Alenka Frim reassigned ARROW-13094:
-----------------------------------
Assignee: Alenka Frim
> [R] Bindings for sign()
> -----------------------
>
> Key: ARROW-13094
> URL: https://issues.apache.org/jira/browse/ARROW-13094
> Project: Apache Arrow
> Issue Type: Improvement
> Components: R
> Reporter: Ian Cook
> Assignee: Alenka Frim
> Priority: Major
> Fix For: 5.0.0
>
>
> ARROW-12861 adds a {{sign}} kernel to the C++ library. Add a mapping to this
> in the R package.
> I think this should be as simple as just adding
> {code:java}
> "sign" = "sign",{code}
> to {{.unary_function_map}} in {{expression.R}}, plus a simple test.
> Note that the C++ library's {{sign}} kernel returns integer output whereas
> base R's {{sign}} function returns numeric (double) output, so a test written
> with {{expect_dplyr_equal()}} might fail unless it explicitly converts the
> output from {{sign()}} using {{as.numeric()}} or {{as.integer()}}.
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