binary for 'printf' routines

This is a quick question: is '%b' a valid conversion to use in any of the 'printf' routines for binary data? I did some searching through old posts in this site and found some that said it is, though internet searching outside this site, as well as books I've looked at (both recent and not so recent) don't seem to turn up that conclusion. Just curious.

Quick answer: no.
(At any rate, it is not standard).