Frama-C API - With_Diff
val diff : t -> t -> t Lattice_bounds.or_bottomdiff t1 t2 is an over-approximation of t1-t2. t2 must be an under-approximation or exact.
Frama-C With_Diffval diff : t -> t -> t Lattice_bounds.or_bottomdiff t1 t2 is an over-approximation of t1-t2. t2 must be an under-approximation or exact.