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let () = Error.init ()
open Bigarray
type double_vector_bigarr =
(float, float64_elt, c_layout) Bigarray.Array1.t
type vector = double_vector_bigarr
let create ?init len =
let barr = Array1.create float64 c_layout len in
begin match init with
| None -> ()
| Some x -> Array1.fill barr x
end ;
barr
let length = Array1.dim
let of_array arr =
Array1.of_array float64 c_layout arr
let to_array v =
Array.init (Array1.dim v) (Array1.get v)
let get (v : vector) i = Array1.get v i
let set (v : vector) i x = Array1.set v i x
let set_all =
Array1.fill
let set_zero v =
set_all v 0.
let set_basis v i =
set_zero v ;
set v i 1.
let subvector v ~off ~len =
Array1.sub v off len
let memcpy ~src:v ~dst:w =
if length v <> length w
then invalid_arg "Vector.memcpy" ;
Array1.blit v w
let copy v =
let w = create (length v) in
memcpy ~src:v ~dst:w;
w
let swap_element v i j =
let d = get v i in
let d' = get v j in
set v j d ;
set v i d'
let reverse v =
let len = length v in
for i=0 to pred (len/2) do
swap_element v i (pred len - i)
done
external add : vector -> vector -> unit
= "ml_gsl_vector_add"
external sub : vector -> vector -> unit
= "ml_gsl_vector_sub"
external mul : vector -> vector -> unit
= "ml_gsl_vector_mul"
external div : vector -> vector -> unit
= "ml_gsl_vector_div"
external scale : vector -> float -> unit
= "ml_gsl_vector_scale"
external add_constant : vector -> float -> unit
= "ml_gsl_vector_add_constant"
external is_null : vector -> bool
= "ml_gsl_vector_isnull"
external max : vector -> float
= "ml_gsl_vector_max"
external min : vector -> float
= "ml_gsl_vector_min"
external minmax : vector -> float * float
= "ml_gsl_vector_minmax"
external max_index : vector -> int
= "ml_gsl_vector_maxindex"
external min_index : vector -> int
= "ml_gsl_vector_minindex"
external minmax_index : vector -> int * int
= "ml_gsl_vector_minmaxindex"
module Single =
struct
type float_vector_bigarr =
(float, float32_elt, c_layout) Bigarray.Array1.t
type vector = float_vector_bigarr
let create ?init len =
let barr = Array1.create float32 c_layout len in
begin match init with
| None -> ()
| Some x -> Array1.fill barr x
end ;
barr
let length = length
let of_array arr =
Array1.of_array float32 c_layout arr
let to_array = to_array
let get (v : vector) i = Array1.get v i
let set (v : vector) i x = Array1.set v i x
let set_all = set_all
let set_zero = set_zero
let set_basis v i =
set_zero v ;
set v i 1.
let subvector = subvector
let memcpy = memcpy
let copy v =
let w = create (length v) in
memcpy ~src:v ~dst:w;
w
let swap_element v i j =
let d = get v i in
let d' = get v j in
set v j d ;
set v i d'
let reverse v =
let len = length v in
for i=0 to pred (len/2) do
swap_element v i (pred len - i)
done
external add : vector -> vector -> unit
= "ml_gsl_vector_float_add"
external sub : vector -> vector -> unit
= "ml_gsl_vector_float_sub"
external mul : vector -> vector -> unit
= "ml_gsl_vector_float_mul"
external div : vector -> vector -> unit
= "ml_gsl_vector_float_div"
external scale : vector -> float -> unit
= "ml_gsl_vector_float_scale"
external add_constant : vector -> float -> unit
= "ml_gsl_vector_float_add_constant"
external is_null : vector -> bool
= "ml_gsl_vector_float_isnull"
external max : vector -> float
= "ml_gsl_vector_float_max"
external min : vector -> float
= "ml_gsl_vector_float_min"
external minmax : vector -> float * float
= "ml_gsl_vector_float_minmax"
external max_index : vector -> int
= "ml_gsl_vector_float_maxindex"
external min_index : vector -> int
= "ml_gsl_vector_float_minindex"
external minmax_index : vector -> int * int
= "ml_gsl_vector_float_minmaxindex"
end