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|
(***********************************************************************)
(* *)
(* Objective Caml *)
(* *)
(* Xavier Leroy, projet Cristal, INRIA Rocquencourt *)
(* *)
(* Copyright 1996 Institut National de Recherche en Informatique et *)
(* en Automatique. All rights reserved. This file is distributed *)
(* under the terms of the GNU Library General Public License, with *)
(* the special exception on linking described in file ../LICENSE. *)
(* *)
(***********************************************************************)
(* $Id$ *)
(* Module [Nativeint]: processor-native integers *)
external neg: nativeint -> nativeint = "%nativeint_neg"
external add: nativeint -> nativeint -> nativeint = "%nativeint_add"
external sub: nativeint -> nativeint -> nativeint = "%nativeint_sub"
external mul: nativeint -> nativeint -> nativeint = "%nativeint_mul"
external div: nativeint -> nativeint -> nativeint = "%nativeint_div"
external rem: nativeint -> nativeint -> nativeint = "%nativeint_mod"
external logand: nativeint -> nativeint -> nativeint = "%nativeint_and"
external logor: nativeint -> nativeint -> nativeint = "%nativeint_or"
external logxor: nativeint -> nativeint -> nativeint = "%nativeint_xor"
external shift_left: nativeint -> int -> nativeint = "%nativeint_lsl"
external shift_right: nativeint -> int -> nativeint = "%nativeint_asr"
external shift_right_logical: nativeint -> int -> nativeint = "%nativeint_lsr"
external of_int: int -> nativeint = "%nativeint_of_int"
external to_int: nativeint -> int = "%nativeint_to_int"
external of_float : float -> nativeint = "nativeint_of_float"
external to_float : nativeint -> float = "nativeint_to_float"
external of_int32: int32 -> nativeint = "%nativeint_of_int32"
external to_int32: nativeint -> int32 = "%nativeint_to_int32"
let zero = of_int 0
let one = of_int 1
let minus_one = of_int (-1)
let succ n = add n one
let pred n = sub n one
let abs n = if n >= zero then n else neg n
let size = Sys.word_size
let min_int = shift_left one (size - 1)
let max_int = sub min_int one
let lognot n = logxor n minus_one
external format : string -> nativeint -> string = "nativeint_format"
let to_string n = format "%d" n
external of_string: string -> nativeint = "nativeint_of_string"
type t = nativeint
let compare = (Pervasives.compare: t -> t -> int)
|
