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Source file bool3.ml

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(**************************************************************************)
(*                                                                        *)
(*  This file is part of Aorai plug-in of Frama-C.                        *)
(*                                                                        *)
(*  Copyright (C) 2007-2024                                               *)
(*    CEA (Commissariat à l'énergie atomique et aux énergies              *)
(*         alternatives)                                                  *)
(*    INRIA (Institut National de Recherche en Informatique et en         *)
(*           Automatique)                                                 *)
(*    INSA  (Institut National des Sciences Appliquees)                   *)
(*                                                                        *)
(*  you can redistribute it and/or modify it under the terms of the GNU   *)
(*  Lesser General Public License as published by the Free Software       *)
(*  Foundation, version 2.1.                                              *)
(*                                                                        *)
(*  It is distributed in the hope that it will be useful,                 *)
(*  but WITHOUT ANY WARRANTY; without even the implied warranty of        *)
(*  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *)
(*  GNU Lesser General Public License for more details.                   *)
(*                                                                        *)
(*  See the GNU Lesser General Public License version 2.1                 *)
(*  for more details (enclosed in the file licenses/LGPLv2.1).            *)
(*                                                                        *)
(**************************************************************************)

type t =
  | True
  | False
  | Undefined

let bool3and c1 c2 = match c1, c2 with
  | True, True -> True

  | _, False
  | False, _ -> False

  | Undefined, _
  | _, Undefined -> Undefined

let bool3or c1 c2 = match c1, c2 with
  | True, _
  | _, True -> True

  | _, Undefined
  | Undefined, _ -> Undefined

  | False, False -> False

let bool3not c = match c with
  | True -> False
  | False -> True
  | Undefined -> Undefined

let bool3_of_bool b = if b then True else False

(*
Local Variables:
compile-command: "make -C ../../.."
End:
*)
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