[ARROW-12861] [C++][Compute] Add sign function kernels

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 5.0.0
• Component/s: C++
• Labels: pull-request-available
• External issue URL: https://github.com/apache/arrow/issues/28594
• Assignee: Eduardo Ponce
• Reporter: Eduardo Ponce
• Created: 24/May/21 20:46
• Updated: 11/Jan/23 08:29
• Resolved: 15/Jul/21 21:10

Description

Add the sign function to the compute kernels.

sign(X) =

• 1 if X > 0
• 0 if X = 0
• -1 if X < 0

Issue Links

• incorporates: ARROW-13937 [C++][Compute] Add explicit output values to sign function and fix unary type checks
• is a child of: ARROW-12748 [C++] Arithmetic kernels for numeric arrays
• is depended upon by: ARROW-13094 [R] Bindings for sign()
• links to: GitHub Pull Request #10395