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signature kernel =
sig
include Abbrev
(* directory *)
val selfdir : string
(* globals *)
val maxinput : int ref
val simple_search : bool ref
(* types *)
val error : int
type oper2 = int * int -> int
type oper3 = int * int * int -> int
type exec = int * int -> int
type seq = int list
val seq_compare : seq * seq -> order
val string_of_seq : seq -> string
(* program *)
type id = int
datatype prog = Ins of (id * prog list)
val prog_compare : prog * prog -> order
val equal_prog : prog * prog -> bool
val prog_size : prog -> int
val all_subprog : prog -> prog list
val depend_on_i : prog -> bool
val under_lambda : prog -> prog list
val has_lambdai : prog -> bool
val shift_prog : int -> prog -> prog
val same_sem : prog -> prog -> bool
(* compressed programs *)
type progi = Arbint.int
val progi_compare : progi * progi -> order
val equal_progi : progi * progi -> bool
val zip_prog : prog -> progi
val unzip_prog : progi -> prog
val pi_to_hseq : progi -> int list
(* pretty printing *)
val constnorm_flag : bool ref
val polynorm_flag : bool ref
val humanf : prog -> string
val humani : int -> prog -> string
val rm_par : string -> string
(* inputs *)
val entryl : (int * int) list
(* execute program *)
val timelimit : int ref (* todo increase the time limit when testing *)
val compose2 : oper2 -> exec -> exec -> exec
val compose3 : oper3 -> exec -> exec -> exec -> exec
val counter : int ref
val start : ('a -> 'b) -> 'a -> 'b
(* instructions *)
val zero_f : exec
val zero_id : id
val one_f : exec
val one_id : id
val two_f : exec
val two_id : id
val addi_f : oper2
val addi_id : id
val diff_f : oper2
val diff_id : id
val mult_f : oper2
val mult_id : id
val divi_f : oper2
val divi_id : id
val modu_f : oper2
val modu_id : id
val cond_f : oper3
val cond_id : id
val loop_f : exec -> oper2
val loop_id : id
val var_f : exec
val var_id : id
val ind_f : exec
val ind_id : id
val compr_f : exec -> int -> int
val compr_id : id
(* associate id and function *)
val nullaryl : (id * exec) list
val nullaryidl : id list
val is_nullary : id -> bool
val find_nullaryf : id -> exec
val binaryl : (id * oper2) list
val binaryidl : id list
val is_binary : id -> bool
val find_binaryf : id -> oper2
val binaryidl_nocomm : id list
val is_comm : id -> bool
(* create executable from program *)
val mk_exec : prog -> (int * int) -> (int * int)
val semo_of_prog : prog -> seq option
val semtimo_of_prog : prog -> (seq * int) option
val sem_of_prog : prog -> seq
val seq_of_prog : prog -> seq
val is_executable : prog -> bool
val operv : term vector
val maxoper : int
val name_of_oper : int -> string
(* compressed applications *)
val papp_nullop : int -> prog
val papp_binop : int -> prog * prog -> prog
val papp_ternop : int -> prog * prog * prog -> prog
(* search time limit *)
exception SearchTimeout;
val rti_glob : int ref
val search_time : Time.time ref
val search_steps : int ref
val init_timer : unit -> unit
val check_timer : unit -> unit
end
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