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I’m trying to reproduce the exact behavior of Erlang phash in another language (Ruby for example). Does anyone know the details of its implementation?
Basically, if in Erlang :
erlang:phash(X, n) -> Y
I want that
phash(X,n) = Y in Ruby.
To see how it works, check the original code: https://github.com/erlang/otp/blob/cbd1378ee1fde835e55614bac9290b281bafe49a/erts/emulator/beam/utils.c#L644
But you cannot have “exact” behaviour of phash in another language – simply because you don’t have erlang’s datatypes available there. (unless you create your own mappings of course)