Fft.Halfcomplex
val make_wavetable : int -> wavetable
val transform : ?stride:int -> fft_array -> wavetable -> Real.workspace -> unit
val transform_rad2 : ?stride:int -> fft_array -> unit
val backward : ?stride:int -> fft_array -> wavetable -> Real.workspace -> unit
val backward_rad2 : ?stride:int -> fft_array -> unit
val inverse : ?stride:int -> fft_array -> wavetable -> Real.workspace -> unit
val inverse_rad2 : ?stride:int -> fft_array -> unit