let rec export_tau tau_of_ctype_logic fmt = function
| Formula.Integer -> pp_print_string fmt "int"
| Formula.Real -> pp_print_string fmt "real"
| Formula.Boolean -> pp_print_string fmt "bool"
| Formula.Pointer t -> (export_tau tau_of_ctype_logic) fmt t
| Formula.Record c -> Format.fprintf fmt "%s" c.Cil_types.cname
| Formula.Array arr ->
let t = tau_of_ctype_logic arr.Ctypes.arr_element in
Format.fprintf fmt "%a farray" (export_tau tau_of_ctype_logic) t
| Formula.Set te ->
Format.fprintf fmt "%a set" (export_tau tau_of_ctype_logic) te
| Formula.ADT("farray",[t]) ->
Format.fprintf fmt "%a farray" (export_tau tau_of_ctype_logic) t
| Formula.ADT(s,[]) -> pp_print_string fmt s
| Formula.ADT(s,[t]) -> Format.fprintf fmt "%a %s" (export_tau tau_of_ctype_logic) t s
| Formula.ADT(s,t::ts) ->
Format.fprintf fmt "@[(%a"(export_tau tau_of_ctype_logic) t ;
List.iter (fun t -> Format.fprintf fmt ",@,%a" ( export_tau tau_of_ctype_logic) t) ts ;
Format.fprintf fmt ") %s@]" s