Tezos_raw_protocol_010_PtGRANAD.Fitness_repr
val from_int64 : int64 -> bytes list
val to_int64 : bytes list -> (int64, Tezos_protocol_environment_010_PtGRANAD.Error_monad.error Tezos_protocol_environment_010_PtGRANAD.Error_monad.trace) Tezos_protocol_environment_010_PtGRANAD.Pervasives.result