Owl_fft_d (owl.Owl_fft

val fft : 
  ?axis:int ->
  (Stdlib.Complex.t, Stdlib.Bigarray.complex64_elt) Owl_dense_ndarray_generic.t ->
  (Stdlib.Complex.t, Stdlib.Bigarray.complex64_elt) Owl_dense_ndarray_generic.t

val ifft : 
  ?axis:int ->
  (Stdlib.Complex.t, Stdlib.Bigarray.complex64_elt) Owl_dense_ndarray_generic.t ->
  (Stdlib.Complex.t, Stdlib.Bigarray.complex64_elt) Owl_dense_ndarray_generic.t

val rfft : 
  ?axis:int ->
  (float, Stdlib.Bigarray.float64_elt) Owl_dense_ndarray_generic.t ->
  (Stdlib.Complex.t, Stdlib.Bigarray.complex64_elt) Owl_dense_ndarray_generic.t

val irfft : 
  ?axis:int ->
  ?n:int ->
  (Stdlib.Complex.t, Stdlib.Bigarray.complex64_elt) Owl_dense_ndarray_generic.t ->
  (float, Stdlib.Bigarray.float64_elt) Owl_dense_ndarray_generic.t

val fft2 : 
  (Stdlib.Complex.t, Stdlib.Bigarray.complex64_elt) Owl_dense_ndarray_generic.t ->
  (Stdlib.Complex.t, Stdlib.Bigarray.complex64_elt) Owl_dense_ndarray_generic.t

val ifft2 : 
  (Stdlib.Complex.t, Stdlib.Bigarray.complex64_elt) Owl_dense_ndarray_generic.t ->
  (Stdlib.Complex.t, Stdlib.Bigarray.complex64_elt) Owl_dense_ndarray_generic.t