val incr1 : Cstruct.t -> int -> boolval incr2 : Cstruct.t -> int -> boolval incr4 : Cstruct.t -> int -> boolval incr8 : Cstruct.t -> int -> boolval incr16 : Cstruct.t -> int -> boolval add4 : Cstruct.t -> int -> int32 -> unitval add8 : Cstruct.t -> int -> int64 -> unitval add16 : Cstruct.t -> int -> int64 -> unit