SQLite Release 3.8.3 On 2014-02-03 (3.8.3) has added:
"Added SQLITE_DETERMINISTIC as an optional bit in the 4th argument to the sqlite3_create_function() and related interfaces, providing applications with the ability to create new functions that can be factored out of inner loops when they have constant arguments."
Support in ooSQLite for this bit needs to be added.
The current support for the sqlite3_create_function() and its relatives has no easy way to add the support, so it will require some significant code changes. The rest of the updates needed to support all the new features of 3.8.3 have been done. This enhancement request serves as a place holder so that this last piece is not forgotten.