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Sys: Use constant for some runtime limitations. After bootstrap 

From: Hugo Heuzard <hugo.heuzard@gmail.com>

git-svn-id: http://caml.inria.fr/svn/ocaml/trunk@15590 f963ae5c-01c2-4b8c-9fe0-0dff7051ff02
master
Gabriel Scherer 2014-11-17 12:21:46 +00:00
parent 82df1b9fb9
commit 8b59f8faef
2 changed files with 7 additions and 1 deletions
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3
stdlib/sys.mli
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@ -99,6 +99,9 @@ val word_size : int
(** Size of one word on the machine currently executing the OCaml
program, in bits: 32 or 64. *)
val int_size : int
(** Size of one int, in bits: 31 or 63. *)
val big_endian : bool
(** Whether the machine currently executing the Caml program is big-endian.
@since 4.00.0 *)

5
stdlib/sys.mlp
View File

@ -21,6 +21,8 @@ external get_config: unit -> string * int * bool = "caml_sys_get_config"
external get_argv: unit -> string * string array = "caml_sys_get_argv"
external big_endian : unit -> bool = "%big_endian"
external word_size : unit -> int = "%word_size"
external int_size : unit -> int = "%int_size"
external max_wosize : unit -> int = "%max_wosize"
external unix : unit -> bool = "%ostype_unix"
external win32 : unit -> bool = "%ostype_win32"
external cygwin : unit -> bool = "%ostype_cygwin"
@ -29,10 +31,11 @@ let (executable_name, argv) = get_argv()
let (os_type, _, _) = get_config()
let big_endian = big_endian ()
let word_size = word_size ()
let int_size = int_size ()
let unix = unix ()
let win32 = win32 ()
let cygwin = cygwin ()
let max_array_length = (1 lsl (word_size - 10)) - 1;;
let max_array_length = max_wosize ()
let max_string_length = word_size / 8 * max_array_length - 1;;
external file_exists: string -> bool = "caml_sys_file_exists"