Affects Version/s: None
Fix Version/s: None
Last pending task for new built-in function is to add documentation for it so that it appears in our Reference page here: http://phoenix.apache.org/language/functions.html
That documentation is generated from the following file (which lives in SVN):
See http://phoenix.apache.org/building_website.html for more info.
Just copy/paste the documentation from another built-in function. Make sure it's classified as a Numeric function (copy/paste ROUND function documentation as a template). Note that due to a bug, you'll need to manually remove the generated html files (rm site/publish/language/*.html) before running build.sh in order for them to get regenerated.