[throwawaymaths]

You can write nifs that way but it seems like a pain in the ass

https://www.erlang.org/doc/apps/erts/erl_nif#enif_schedule_n...

After all, many of the BIFs have been replaced internally by NIFs

And there's this, which would scare me:

https://erlang.org/documentation/doc-15.0-rc3/erts-15.0/doc/...