type ('a, 'b, 'c, 'd) dir = ('a, 'b, 'c, 'd) Fftw.dir
val forward :
  (float, Bigarray.float64_elt, Complex.t, Bigarray.complex64_elt) dir
val backward :
  (Complex.t, Bigarray.complex64_elt, float, Bigarray.float64_elt) dir
val create :
  ('a, 'b, 'c, 'd) dir ->
  ?measure:bool ->
  ?use_wisdom:bool ->
  ?unsafe:bool ->
  ?normalize:bool ->
  ?i:(Complex.t, Bigarray.complex64_elt, 'e) Bigarray.Array1.t ->
  ?istride:int ->
  ?o:(Complex.t, Bigarray.complex64_elt, 'e) Bigarray.Array1.t ->
  ?ostride:int ->
  int ->
  ?howmany:int ->
  ?out:(Complex.t, Bigarray.complex64_elt, 'f) Bigarray.Array1.t ->
  ?ostride:int ->
  ?odist:int ->
  ?istride:int ->
  ?idist:int ->
  (Complex.t, Bigarray.complex64_elt, 'f) Bigarray.Array1.t ->
  (Complex.t, Bigarray.complex64_elt, 'f) Bigarray.Array1.t
val create_in_place :
  ('a, 'b, 'c, 'd) dir ->
  ?measure:bool ->
  ?use_wisdom:bool ->
  ?unsafe:bool ->
  ?normalize:bool ->
  ?i:(Complex.t, Bigarray.complex64_elt, 'e) Bigarray.Array1.t ->
  ?istride:int ->
  ?o:(Complex.t, Bigarray.complex64_elt, 'e) Bigarray.Array1.t ->
  ?ostride:int ->
  int ->
  ?howmany:int ->
  ?work:(Complex.t, Bigarray.complex64_elt, 'f) Bigarray.Array1.t ->
  ?istride:int ->
  ?idist:int ->
  (Complex.t, Bigarray.complex64_elt, 'f) Bigarray.Array1.t -> unit
val nd_create :
  ('a, 'b, 'c, 'd) dir ->
  ?measure:bool ->
  ?use_wisdom:bool ->
  ?unsafe:bool ->
  ?normalize:bool ->
  ?i:(Complex.t, Bigarray.complex64_elt, 'e) Bigarray.Genarray.t ->
  ?o:(Complex.t, Bigarray.complex64_elt, 'e) Bigarray.Genarray.t ->
  'e Bigarray.layout ->
  int array ->
  ?index_dims:int ->
  ?out:(Complex.t, Bigarray.complex64_elt, 'e) Bigarray.Genarray.t ->
  (Complex.t, Bigarray.complex64_elt, 'e) Bigarray.Genarray.t ->
  (Complex.t, Bigarray.complex64_elt, 'e) Bigarray.Genarray.t
val nd_create_in_place :
  ('a, 'b, 'c, 'd) dir ->
  ?measure:bool ->
  ?use_wisdom:bool ->
  ?unsafe:bool ->
  ?normalize:bool ->
  ?i:(Complex.t, Bigarray.complex64_elt, 'e) Bigarray.Genarray.t ->
  ?o:(Complex.t, Bigarray.complex64_elt, 'e) Bigarray.Genarray.t ->
  'e Bigarray.layout ->
  int array ->
  ?index_dims:int ->
  (Complex.t, Bigarray.complex64_elt, 'e) Bigarray.Genarray.t -> unit
val r_create :
  ('a, 'b, 'c, 'd) dir ->
  ?measure:bool ->
  ?use_wisdom:bool ->
  ?unsafe:bool ->
  ?normalize:bool ->
  ?i:(float, Bigarray.float64_elt, 'e) Bigarray.Array1.t ->
  ?istride:int ->
  ?o:(float, Bigarray.float64_elt, 'e) Bigarray.Array1.t ->
  ?ostride:int ->
  int ->
  ?howmany:int ->
  ?out:(float, Bigarray.float64_elt, 'f) Bigarray.Array1.t ->
  ?ostride:int ->
  ?odist:int ->
  ?istride:int ->
  ?idist:int ->
  (float, Bigarray.float64_elt, 'f) Bigarray.Array1.t ->
  (float, Bigarray.float64_elt, 'f) Bigarray.Array1.t
val r_create_in_place :
  ('a, 'b, 'c, 'd) dir ->
  ?measure:bool ->
  ?use_wisdom:bool ->
  ?unsafe:bool ->
  ?normalize:bool ->
  ?i:(float, Bigarray.float64_elt, 'e) Bigarray.Array1.t ->
  ?istride:int ->
  ?o:(float, Bigarray.float64_elt, 'e) Bigarray.Array1.t ->
  ?ostride:int ->
  int ->
  ?howmany:int ->
  ?work:(float, Bigarray.float64_elt, 'f) Bigarray.Array1.t ->
  ?istride:int ->
  ?idist:int -> (float, Bigarray.float64_elt, 'f) Bigarray.Array1.t -> unit
val rnd_create :
  ('a, 'b, 'c, 'd) dir ->
  ?measure:bool ->
  ?use_wisdom:bool ->
  ?unsafe:bool ->
  ?normalize:bool ->
  'e Bigarray.layout ->
  int array ->
  ?index_dims:int ->
  ?out:('c, 'd, 'e) Bigarray.Genarray.t ->
  ('a, 'b, 'e) Bigarray.Genarray.t -> ('c, 'd, 'e) Bigarray.Genarray.t
val wisdom_export_fold : (char -> 'a -> 'a) -> 'a -> 'a
val wisdom_export_iter : (char -> unit) -> unit
external wisdom_to_file : string -> unit
  = "fftw_export_wisdom_to_file_wrapper"
external wisdom_to_string : unit -> string
  = "fftw_export_wisdom_to_string_wrapper"
val wisdom_import_fold : ('a -> 'a * char) -> 'a -> 'a
val wisdom_import_iter : (unit -> char) -> unit
external wisdom_from_file : string -> unit
  = "fftw_import_wisdom_from_file_wrapper"
external wisdom_from_string : string -> unit
  = "fftw_import_wisdom_from_string_wrapper"
external wisdom_forget : unit -> unit = "fftw_forget_wisdom_wrapper"
val float : (float, Bigarray.float64_elt) Bigarray.kind
val complex : (Complex.t, Bigarray.complex64_elt) Bigarray.kind
type float_elt = Bigarray.float64_elt
and complex_elt = Bigarray.complex64_elt