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|
(* TEST
*)
open Bigarray
type bigstring = (char, int8_unsigned_elt, c_layout) Array1.t
external caml_bigstring_get_16 :
bigstring -> int -> int = "%caml_bigstring_get16"
external caml_bigstring_get_32 :
bigstring -> int -> int32 = "%caml_bigstring_get32"
external caml_bigstring_get_64 :
bigstring -> int -> int64 = "%caml_bigstring_get64"
external caml_bigstring_set_16 :
bigstring -> int -> int -> unit = "%caml_bigstring_set16"
external caml_bigstring_set_32 :
bigstring -> int -> int32 -> unit = "%caml_bigstring_set32"
external caml_bigstring_set_64 :
bigstring -> int -> int64 -> unit = "%caml_bigstring_set64"
let bigstring_of_string s =
let a = Array1.create char c_layout (String.length s) in
for i = 0 to String.length s - 1 do
a.{i} <- s.[i]
done;
a
let s = bigstring_of_string (String.make 10 '\x00')
let empty_s = bigstring_of_string ""
let assert_bound_check2 f v1 v2 =
try
ignore(f v1 v2);
assert false
with
| Invalid_argument _ -> ()
let assert_bound_check3 f v1 v2 v3 =
try
ignore(f v1 v2 v3);
assert false
with
| Invalid_argument _ -> ()
let () =
assert_bound_check2 caml_bigstring_get_16 s (-1);
assert_bound_check2 caml_bigstring_get_16 s 9;
assert_bound_check2 caml_bigstring_get_32 s (-1);
assert_bound_check2 caml_bigstring_get_32 s 7;
assert_bound_check2 caml_bigstring_get_64 s (-1);
assert_bound_check2 caml_bigstring_get_64 s 3;
assert_bound_check3 caml_bigstring_set_16 s (-1) 0;
assert_bound_check3 caml_bigstring_set_16 s 9 0;
assert_bound_check3 caml_bigstring_set_32 s (-1) 0l;
assert_bound_check3 caml_bigstring_set_32 s 7 0l;
assert_bound_check3 caml_bigstring_set_64 s (-1) 0L;
assert_bound_check3 caml_bigstring_set_64 s 3 0L;
assert_bound_check2 caml_bigstring_get_16 empty_s 0;
assert_bound_check2 caml_bigstring_get_32 empty_s 0;
assert_bound_check2 caml_bigstring_get_64 empty_s 0;
assert_bound_check3 caml_bigstring_set_16 empty_s 0 0;
assert_bound_check3 caml_bigstring_set_32 empty_s 0 0l;
assert_bound_check3 caml_bigstring_set_64 empty_s 0 0L
external bswap16: int -> int = "%bswap16"
external bswap32: int32 -> int32 = "%bswap_int32"
external bswap64: int64 -> int64 = "%bswap_int64"
let swap16 x =
if Sys.big_endian
then bswap16 x
else x
let swap32 x =
if Sys.big_endian
then bswap32 x
else x
let swap64 x =
if Sys.big_endian
then bswap64 x
else x
let () =
caml_bigstring_set_16 s 0 (swap16 0x1234);
Printf.printf "%x %x %x\n%!"
(swap16 (caml_bigstring_get_16 s 0))
(swap16 (caml_bigstring_get_16 s 1))
(swap16 (caml_bigstring_get_16 s 2));
caml_bigstring_set_16 s 0 (swap16 0xFEDC);
Printf.printf "%x %x %x\n%!"
(swap16 (caml_bigstring_get_16 s 0))
(swap16 (caml_bigstring_get_16 s 1))
(swap16 (caml_bigstring_get_16 s 2))
let () =
caml_bigstring_set_32 s 0 (swap32 0x12345678l);
Printf.printf "%lx %lx %lx\n%!"
(swap32 (caml_bigstring_get_32 s 0))
(swap32 (caml_bigstring_get_32 s 1))
(swap32 (caml_bigstring_get_32 s 2));
caml_bigstring_set_32 s 0 (swap32 0xFEDCBA09l);
Printf.printf "%lx %lx %lx\n%!"
(swap32 (caml_bigstring_get_32 s 0))
(swap32 (caml_bigstring_get_32 s 1))
(swap32 (caml_bigstring_get_32 s 2))
let () =
caml_bigstring_set_64 s 0 (swap64 0x1234567890ABCDEFL);
Printf.printf "%Lx %Lx %Lx\n%!"
(swap64 (caml_bigstring_get_64 s 0))
(swap64 (caml_bigstring_get_64 s 1))
(swap64 (caml_bigstring_get_64 s 2));
caml_bigstring_set_64 s 0 (swap64 0xFEDCBA0987654321L);
Printf.printf "%Lx %Lx %Lx\n%!"
(swap64 (caml_bigstring_get_64 s 0))
(swap64 (caml_bigstring_get_64 s 1))
(swap64 (caml_bigstring_get_64 s 2))
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