/usr/lib/ocaml/gsl/gsl_fft.mli is in libocamlgsl-ocaml-dev 1.19.1-2build2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 | (* gsl-ocaml - OCaml interface to GSL *)
(* Copyright (©) 2002-2012 - Olivier Andrieu *)
(* Distributed under the terms of the GPL version 3 *)
(** Fast Fourier Transforms *)
open Gsl_complex
exception Wrong_layout
type layout =
| Real
| Halfcomplex
| Halfcomplex_rad2
| Complex
type fft_array = {
mutable layout : layout ;
data : float array }
module Real :
sig
type workspace
type wavetable
val make_workspace : int -> workspace
val make_wavetable : int -> wavetable
external transform :
?stride:int -> fft_array -> wavetable -> workspace -> unit
= "ml_gsl_fft_real_transform"
external transform_rad2 :
?stride:int -> fft_array -> unit
= "ml_gsl_fft_real_radix2_transform"
val unpack : ?stride:int -> fft_array -> fft_array
end
module Halfcomplex :
sig
type wavetable
val make_wavetable : int -> wavetable
external transform :
?stride:int -> fft_array -> wavetable -> Real.workspace -> unit
= "ml_gsl_fft_halfcomplex_transform"
external transform_rad2 :
?stride:int -> fft_array -> unit
= "ml_gsl_fft_halfcomplex_radix2_transform"
external backward :
?stride:int -> fft_array -> wavetable -> Real.workspace -> unit
= "ml_gsl_fft_halfcomplex_backward"
external backward_rad2 :
?stride:int -> fft_array -> unit
= "ml_gsl_fft_halfcomplex_radix2_backward"
external inverse :
?stride:int -> fft_array -> wavetable -> Real.workspace -> unit
= "ml_gsl_fft_halfcomplex_inverse"
external inverse_rad2 :
?stride:int -> fft_array -> unit
= "ml_gsl_fft_halfcomplex_radix2_inverse"
val unpack : ?stride:int -> fft_array -> fft_array
end
module Complex :
sig
type workspace
type wavetable
type direction = Forward | Backward
val make_workspace : int -> workspace
val make_wavetable : int -> wavetable
external forward :
?stride:int -> complex_array -> wavetable -> workspace -> unit
= "ml_gsl_fft_complex_forward"
external forward_rad2 :
?dif:bool -> ?stride:int -> complex_array -> unit
= "ml_gsl_fft_complex_rad2_forward"
external transform :
?stride:int -> complex_array -> wavetable -> workspace -> direction -> unit
= "ml_gsl_fft_complex_transform"
external transform_rad2 :
?dif:bool -> ?stride:int -> complex_array -> direction -> unit
= "ml_gsl_fft_complex_rad2_transform"
external backward :
?stride:int -> complex_array -> wavetable -> workspace -> unit
= "ml_gsl_fft_complex_backward"
external backward_rad2 :
?dif:bool -> ?stride:int -> complex_array -> unit
= "ml_gsl_fft_complex_rad2_backward"
external inverse :
?stride:int -> complex_array -> wavetable -> workspace -> unit
= "ml_gsl_fft_complex_inverse"
external inverse_rad2 :
?dif:bool -> ?stride:int -> complex_array -> unit
= "ml_gsl_fft_complex_rad2_inverse"
end
val unpack : fft_array -> complex_array
val hc_mult : fft_array -> fft_array -> unit
val hc_mult_rad2 : fft_array -> fft_array -> unit
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