284 lines
11 KiB
OCaml
284 lines
11 KiB
OCaml
(***********************************************************************)
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(* *)
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(* OCaml *)
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(* *)
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(* Manuel Serrano et Xavier Leroy, INRIA Rocquencourt *)
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(* *)
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(* Copyright 2000 Institut National de Recherche en Informatique et *)
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(* en Automatique. All rights reserved. This file is distributed *)
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(* under the terms of the GNU Library General Public License, with *)
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(* the special exception on linking described in file ../../LICENSE. *)
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(* *)
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(***********************************************************************)
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(* Module [Bigarray]: large, multi-dimensional, numerical arrays *)
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external init : unit -> unit = "caml_ba_init"
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let _ = init()
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type float32_elt = Float32_elt
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type float64_elt = Float64_elt
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type int8_signed_elt = Int8_signed_elt
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type int8_unsigned_elt = Int8_unsigned_elt
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type int16_signed_elt = Int16_signed_elt
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type int16_unsigned_elt = Int16_unsigned_elt
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type int32_elt = Int32_elt
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type int64_elt = Int64_elt
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type int_elt = Int_elt
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type nativeint_elt = Nativeint_elt
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type complex32_elt = Complex32_elt
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type complex64_elt = Complex64_elt
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type ('a, 'b) kind =
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Float32 : (float, float32_elt) kind
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| Float64 : (float, float64_elt) kind
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| Int8_signed : (int, int8_signed_elt) kind
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| Int8_unsigned : (int, int8_unsigned_elt) kind
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| Int16_signed : (int, int16_signed_elt) kind
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| Int16_unsigned : (int, int16_unsigned_elt) kind
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| Int32 : (int32, int32_elt) kind
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| Int64 : (int64, int64_elt) kind
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| Int : (int, int_elt) kind
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| Nativeint : (nativeint, nativeint_elt) kind
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| Complex32 : (Complex.t, complex32_elt) kind
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| Complex64 : (Complex.t, complex64_elt) kind
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| Char : (char, int8_unsigned_elt) kind
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(* Keep those constants in sync with the caml_ba_kind enumeration
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in bigarray.h *)
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let float32 = Float32
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let float64 = Float64
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let int8_signed = Int8_signed
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let int8_unsigned = Int8_unsigned
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let int16_signed = Int16_signed
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let int16_unsigned = Int16_unsigned
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let int32 = Int32
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let int64 = Int64
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let int = Int
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let nativeint = Nativeint
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let complex32 = Complex32
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let complex64 = Complex64
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let char = Char
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type c_layout = C_layout_typ
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type fortran_layout = Fortran_layout_typ
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type 'a layout =
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C_layout: c_layout layout
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| Fortran_layout: fortran_layout layout
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(* Keep those constants in sync with the caml_ba_layout enumeration
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in bigarray.h *)
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let c_layout = C_layout
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let fortran_layout = Fortran_layout
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module Genarray = struct
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type ('a, 'b, 'c) t
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external create: ('a, 'b) kind -> 'c layout -> int array -> ('a, 'b, 'c) t
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= "caml_ba_create"
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external get: ('a, 'b, 'c) t -> int array -> 'a
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= "caml_ba_get_generic"
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external set: ('a, 'b, 'c) t -> int array -> 'a -> unit
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= "caml_ba_set_generic"
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external num_dims: ('a, 'b, 'c) t -> int = "caml_ba_num_dims"
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external nth_dim: ('a, 'b, 'c) t -> int -> int = "caml_ba_dim"
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let dims a =
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let n = num_dims a in
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let d = Array.make n 0 in
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for i = 0 to n-1 do d.(i) <- nth_dim a i done;
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d
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external kind: ('a, 'b, 'c) t -> ('a, 'b) kind = "caml_ba_kind"
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external layout: ('a, 'b, 'c) t -> 'c layout = "caml_ba_layout"
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external sub_left: ('a, 'b, c_layout) t -> int -> int -> ('a, 'b, c_layout) t
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= "caml_ba_sub"
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external sub_right: ('a, 'b, fortran_layout) t -> int -> int ->
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('a, 'b, fortran_layout) t
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= "caml_ba_sub"
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external slice_left: ('a, 'b, c_layout) t -> int array ->
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('a, 'b, c_layout) t
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= "caml_ba_slice"
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external slice_right: ('a, 'b, fortran_layout) t -> int array ->
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('a, 'b, fortran_layout) t
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= "caml_ba_slice"
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external blit: ('a, 'b, 'c) t -> ('a, 'b, 'c) t -> unit
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= "caml_ba_blit"
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external fill: ('a, 'b, 'c) t -> 'a -> unit = "caml_ba_fill"
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external map_internal: Unix.file_descr -> ('a, 'b) kind -> 'c layout ->
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bool -> int array -> int64 -> ('a, 'b, 'c) t
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= "caml_ba_map_file_bytecode" "caml_ba_map_file"
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let map_file fd ?(pos = 0L) kind layout shared dims =
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map_internal fd kind layout shared dims pos
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end
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module Array1 = struct
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type ('a, 'b, 'c) t = ('a, 'b, 'c) Genarray.t
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let create kind layout dim =
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Genarray.create kind layout [|dim|]
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external get: ('a, 'b, 'c) t -> int -> 'a = "%caml_ba_ref_1"
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external set: ('a, 'b, 'c) t -> int -> 'a -> unit = "%caml_ba_set_1"
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external unsafe_get: ('a, 'b, 'c) t -> int -> 'a = "%caml_ba_unsafe_ref_1"
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external unsafe_set: ('a, 'b, 'c) t -> int -> 'a -> unit
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= "%caml_ba_unsafe_set_1"
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external dim: ('a, 'b, 'c) t -> int = "%caml_ba_dim_1"
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external kind: ('a, 'b, 'c) t -> ('a, 'b) kind = "caml_ba_kind"
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external layout: ('a, 'b, 'c) t -> 'c layout = "caml_ba_layout"
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external sub: ('a, 'b, 'c) t -> int -> int -> ('a, 'b, 'c) t = "caml_ba_sub"
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external blit: ('a, 'b, 'c) t -> ('a, 'b, 'c) t -> unit = "caml_ba_blit"
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external fill: ('a, 'b, 'c) t -> 'a -> unit = "caml_ba_fill"
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let of_array (type t) kind (layout: t layout) data =
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let ba = create kind layout (Array.length data) in
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let ofs =
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match layout with
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C_layout -> 0
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| Fortran_layout -> 1
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in
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for i = 0 to Array.length data - 1 do unsafe_set ba (i + ofs) data.(i) done;
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ba
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let map_file fd ?pos kind layout shared dim =
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Genarray.map_file fd ?pos kind layout shared [|dim|]
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end
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module Array2 = struct
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type ('a, 'b, 'c) t = ('a, 'b, 'c) Genarray.t
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let create kind layout dim1 dim2 =
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Genarray.create kind layout [|dim1; dim2|]
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external get: ('a, 'b, 'c) t -> int -> int -> 'a = "%caml_ba_ref_2"
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external set: ('a, 'b, 'c) t -> int -> int -> 'a -> unit = "%caml_ba_set_2"
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external unsafe_get: ('a, 'b, 'c) t -> int -> int -> 'a
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= "%caml_ba_unsafe_ref_2"
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external unsafe_set: ('a, 'b, 'c) t -> int -> int -> 'a -> unit
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= "%caml_ba_unsafe_set_2"
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external dim1: ('a, 'b, 'c) t -> int = "%caml_ba_dim_1"
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external dim2: ('a, 'b, 'c) t -> int = "%caml_ba_dim_2"
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external kind: ('a, 'b, 'c) t -> ('a, 'b) kind = "caml_ba_kind"
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external layout: ('a, 'b, 'c) t -> 'c layout = "caml_ba_layout"
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external sub_left: ('a, 'b, c_layout) t -> int -> int -> ('a, 'b, c_layout) t
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= "caml_ba_sub"
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external sub_right:
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('a, 'b, fortran_layout) t -> int -> int -> ('a, 'b, fortran_layout) t
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= "caml_ba_sub"
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let slice_left a n = Genarray.slice_left a [|n|]
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let slice_right a n = Genarray.slice_right a [|n|]
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external blit: ('a, 'b, 'c) t -> ('a, 'b, 'c) t -> unit = "caml_ba_blit"
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external fill: ('a, 'b, 'c) t -> 'a -> unit = "caml_ba_fill"
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let of_array (type t) kind (layout: t layout) data =
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let dim1 = Array.length data in
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let dim2 = if dim1 = 0 then 0 else Array.length data.(0) in
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let ba = create kind layout dim1 dim2 in
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let ofs =
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match layout with
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C_layout -> 0
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| Fortran_layout -> 1
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in
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for i = 0 to dim1 - 1 do
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let row = data.(i) in
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if Array.length row <> dim2 then
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invalid_arg("Bigarray.Array2.of_array: non-rectangular data");
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for j = 0 to dim2 - 1 do
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unsafe_set ba (i + ofs) (j + ofs) row.(j)
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done
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done;
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ba
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let map_file fd ?pos kind layout shared dim1 dim2 =
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Genarray.map_file fd ?pos kind layout shared [|dim1;dim2|]
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end
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module Array3 = struct
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type ('a, 'b, 'c) t = ('a, 'b, 'c) Genarray.t
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let create kind layout dim1 dim2 dim3 =
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Genarray.create kind layout [|dim1; dim2; dim3|]
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external get: ('a, 'b, 'c) t -> int -> int -> int -> 'a = "%caml_ba_ref_3"
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external set: ('a, 'b, 'c) t -> int -> int -> int -> 'a -> unit
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= "%caml_ba_set_3"
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external unsafe_get: ('a, 'b, 'c) t -> int -> int -> int -> 'a
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= "%caml_ba_unsafe_ref_3"
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external unsafe_set: ('a, 'b, 'c) t -> int -> int -> int -> 'a -> unit
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= "%caml_ba_unsafe_set_3"
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external dim1: ('a, 'b, 'c) t -> int = "%caml_ba_dim_1"
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external dim2: ('a, 'b, 'c) t -> int = "%caml_ba_dim_2"
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external dim3: ('a, 'b, 'c) t -> int = "%caml_ba_dim_3"
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external kind: ('a, 'b, 'c) t -> ('a, 'b) kind = "caml_ba_kind"
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external layout: ('a, 'b, 'c) t -> 'c layout = "caml_ba_layout"
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external sub_left: ('a, 'b, c_layout) t -> int -> int -> ('a, 'b, c_layout) t
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= "caml_ba_sub"
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external sub_right:
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('a, 'b, fortran_layout) t -> int -> int -> ('a, 'b, fortran_layout) t
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= "caml_ba_sub"
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let slice_left_1 a n m = Genarray.slice_left a [|n; m|]
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let slice_right_1 a n m = Genarray.slice_right a [|n; m|]
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let slice_left_2 a n = Genarray.slice_left a [|n|]
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let slice_right_2 a n = Genarray.slice_right a [|n|]
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external blit: ('a, 'b, 'c) t -> ('a, 'b, 'c) t -> unit = "caml_ba_blit"
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external fill: ('a, 'b, 'c) t -> 'a -> unit = "caml_ba_fill"
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let of_array (type t) kind (layout: t layout) data =
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let dim1 = Array.length data in
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let dim2 = if dim1 = 0 then 0 else Array.length data.(0) in
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let dim3 = if dim2 = 0 then 0 else Array.length data.(0).(0) in
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let ba = create kind layout dim1 dim2 dim3 in
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let ofs =
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match layout with
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C_layout -> 0
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| Fortran_layout -> 1
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in
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for i = 0 to dim1 - 1 do
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let row = data.(i) in
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if Array.length row <> dim2 then
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invalid_arg("Bigarray.Array3.of_array: non-cubic data");
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for j = 0 to dim2 - 1 do
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let col = row.(j) in
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if Array.length col <> dim3 then
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invalid_arg("Bigarray.Array3.of_array: non-cubic data");
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for k = 0 to dim3 - 1 do
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unsafe_set ba (i + ofs) (j + ofs) (k + ofs) col.(k)
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done
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done
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done;
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ba
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let map_file fd ?pos kind layout shared dim1 dim2 dim3 =
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Genarray.map_file fd ?pos kind layout shared [|dim1;dim2;dim3|]
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end
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external genarray_of_array1: ('a, 'b, 'c) Array1.t -> ('a, 'b, 'c) Genarray.t
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= "%identity"
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external genarray_of_array2: ('a, 'b, 'c) Array2.t -> ('a, 'b, 'c) Genarray.t
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= "%identity"
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external genarray_of_array3: ('a, 'b, 'c) Array3.t -> ('a, 'b, 'c) Genarray.t
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= "%identity"
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let array1_of_genarray a =
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if Genarray.num_dims a = 1 then a
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else invalid_arg "Bigarray.array1_of_genarray"
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let array2_of_genarray a =
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if Genarray.num_dims a = 2 then a
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else invalid_arg "Bigarray.array2_of_genarray"
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let array3_of_genarray a =
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if Genarray.num_dims a = 3 then a
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else invalid_arg "Bigarray.array3_of_genarray"
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external reshape:
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('a, 'b, 'c) Genarray.t -> int array -> ('a, 'b, 'c) Genarray.t
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= "caml_ba_reshape"
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let reshape_1 a dim1 = reshape a [|dim1|]
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let reshape_2 a dim1 dim2 = reshape a [|dim1;dim2|]
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let reshape_3 a dim1 dim2 dim3 = reshape a [|dim1;dim2;dim3|]
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(* Force caml_ba_get_{1,2,3,N} to be linked in, since we don't refer
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to those primitives directly in this file *)
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let _ =
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let _ = Genarray.get in
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let _ = Array1.get in
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let _ = Array2.get in
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let _ = Array3.get in
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()
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external get1: unit -> unit = "caml_ba_get_1"
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external get2: unit -> unit = "caml_ba_get_2"
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external get3: unit -> unit = "caml_ba_get_3"
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external set1: unit -> unit = "caml_ba_set_1"
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external set2: unit -> unit = "caml_ba_set_2"
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external set3: unit -> unit = "caml_ba_set_3"
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