val equal : t -> t -> boolval digest_bytes : Bytes.t -> int -> int -> t -> tval unsafe_digest_bytes : Bytes.t -> int -> int -> t -> tval digest_string : String.t -> int -> int -> t -> tval unsafe_digest_string : String.t -> int -> int -> t -> tval digest_bigstring : bigstring -> int -> int -> t -> tval unsafe_digest_bigstring : bigstring -> int -> int -> t -> t