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[@@@warning "-32"]
let sign8 v =
(v lsl ( Sys.int_size - 8 )) asr ( Sys.int_size - 8 )
[@@ocaml.inline]
let sign16 v =
(v lsl ( Sys.int_size - 16 )) asr ( Sys.int_size - 16 )
[@@ocaml.inline]
let get_uint8 s off =
Char.code (get_char s off)
[@@ocaml.inline]
let get_int8 s off =
((get_uint8 s off) lsl ( Sys.int_size - 8 )) asr ( Sys.int_size - 8 )
[@@ocaml.inline]
let set_int8 s off v =
(* It is ok to cast using unsafe_chr because both String.set
and Bigarray.Array1.set (on bigstrings) use the 'store unsigned int8'
primitives that effectively extract the bits before writing *)
set_char s off (Char.unsafe_chr v)
[@@ocaml.inline]
let unsafe_get_uint8 s off =
Char.code (unsafe_get_char s off)
[@@ocaml.inline]
let unsafe_get_int8 s off =
((unsafe_get_uint8 s off) lsl ( Sys.int_size - 8 )) asr ( Sys.int_size - 8 )
[@@ocaml.inline]
let unsafe_set_int8 s off v =
unsafe_set_char s off (Char.unsafe_chr v)
[@@ocaml.inline]
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