git fetch git://github.com/davisp/otp.git enif_phash2
https://github.com/davisp/otp/compare/maint...enif_phash2
https://github.com/davisp/otp/compare/maint...enif_phash2.patch
This patch exposes the phash2 function to NIFs. It is exactly equivalent to:
erlang:phash2(Term, 16#100000000)
Thanks,
Paul Davis