sig
val incr1 : Cstruct.t -> int -> bool
val incr2 : Cstruct.t -> int -> bool
val incr4 : Cstruct.t -> int -> bool
val incr8 : Cstruct.t -> int -> bool
val incr16 : Cstruct.t -> int -> bool
val add4 : Cstruct.t -> int -> int32 -> unit
val add8 : Cstruct.t -> int -> int64 -> unit
val add16 : Cstruct.t -> int -> int64 -> unit
end