package frama-c

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package frama-c
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Bound Variables Footprints.

All provided operation are constant-time bitwise and integer operations.

type t

An over-approximation of set of integers

val empty : t
val singleton : int -> t
val order : t -> int

Max stack of binders

val bind : t -> t

Decrease all elements in s after removing 0

val union : t -> t -> t
val closed : t -> bool

All variables are bound

val closed_at : int -> t -> bool

closed_at n a Does not contains variables k<n

val is_empty : t -> bool

No bound variables

val contains : int -> t -> bool

if contains k s returns false then k does not belong to s

val overlap : int -> int -> t -> bool

if may_overlap k n s returns false then no variable i with k<=i<k+n occurs in s.

val pretty : Format.formatter -> t -> unit