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imp2.mli
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imp2.mli
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val negb : bool -> bool
type 'a option =
| Some of 'a
| None
type sumbool =
| Left
| Right
val plus : int -> int -> int
val mult : int -> int -> int
val minus : int -> int -> int
val eq_nat_dec : int -> int -> sumbool
val beq_nat : int -> int -> bool
val ble_nat : int -> int -> bool
type id =
int
(* singleton inductive, whose constructor was Id *)
val eq_id_dec : id -> id -> sumbool
type state = id -> int
val update : state -> id -> int -> state
type aexp =
| ANum of int
| AId of id
| APlus of aexp * aexp
| AMinus of aexp * aexp
| AMult of aexp * aexp
type bexp =
| BTrue
| BFalse
| BEq of aexp * aexp
| BLe of aexp * aexp
| BNot of bexp
| BAnd of bexp * bexp
val aeval : state -> aexp -> int
val beval : state -> bexp -> bool
type com =
| CSkip
| CAss of id * aexp
| CSeq of com * com
| CIf of bexp * com * com
| CWhile of bexp * com
val ceval_step : state -> com -> int -> state option