Ft_turing.Executecheck_input input blank does sanity checks on input and returns its length if all is good
convert input blank length convert a string input into a resizable vector
is_final tbl state simple boolean to check if a state is contained in the Hashtbl of all known states
val is_blocked : 
  Stdlib.Format.formatter ->
  ( string, 'a ) CCVector.t ->
  string ->
  string ->
  int ->
  print:bool ->
  unitis_blocked tape state read index state_tbl print
val terminate : 
  Stdlib.Format.formatter ->
  string ->
  string ->
  bool ->
  ( string, 'a ) CCVector.t ->
  int ->
  ( string, 'b * bool ) Stdlib.Hashtbl.t ->
  unitterminate current_state read print tape index state_tbl is called when machine is estimated to be in a final or blocked state
val move_direction : Lang.direction -> intmove_direction direction converts a given action field direction to an incrementation or decrementation of the index in the recursive interpretation
val execution : 
  Stdlib.Format.formatter ->
  print:bool ->
  (( string, 'a * bool ) Stdlib.Hashtbl.t
   * ( string * string, string * string * Lang.direction ) Stdlib.Hashtbl.t) ->
  ( string, CCVector.rw ) CCVector.t ->
  int ->
  string ->
  unitexecution tables tape index current_state recursively reads and writes on given tape at given index in regards to current state by following the transitions found in transitions and states tables
val interpreter : 
  Stdlib.Format.formatter ->
  ((string list
    * string
    * string
    * (( string, 'a * bool ) Stdlib.Hashtbl.t
       * ( string * string, string * string * Lang.direction ) Stdlib.Hashtbl.t))
   * string) ->
  unitinterpreter machine input function sets up the execution of the turing machine machine on the input.