[ARROW-14779] [C++] Add other common round mode names to RoundMode docs

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 7.0.0
• Component/s: C++
• Labels: beginner good-first-issue kernel pull-request-available
• External issue URL: https://github.com/apache/arrow/issues/30314
• Assignee: Vibhatha Lakmal Abeykoon
• Reporter: David Li
• Created: 19/Nov/21 17:53
• Updated: 11/Jan/23 08:42
• Resolved: 02/Dec/21 19:51

Description

We should add other common names for rounding modes to the docstrings in RoundMode for easy scanning (e.g. note that TOWARDS_INFINITY is often called AWAY_FROM_ZERO).

Issue Links

• links to: GitHub Pull Request #11838