48 lines
1.9 KiB
OCaml
48 lines
1.9 KiB
OCaml
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(***********************************************************************)
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(* *)
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(* Objective Caml *)
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(* *)
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(* Xavier Leroy, projet Cristal, INRIA Rocquencourt *)
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(* *)
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(* Copyright 1996 Institut National de Recherche en Informatique et *)
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(* en Automatique. All rights reserved. This file is distributed *)
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(* under the terms of the GNU Library General Public License. *)
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(* *)
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(***********************************************************************)
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(* $Id$ *)
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(* Module [Int32]: 32-bit integers *)
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type t
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external neg: t -> t = "int32_neg"
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external add: t -> t -> t = "int32_add"
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external sub: t -> t -> t = "int32_sub"
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external mul: t -> t -> t = "int32_mul"
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external div: t -> t -> t = "int32_div"
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external rem: t -> t -> t = "int32_mod"
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external logand: t -> t -> t = "int32_and"
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external logor: t -> t -> t = "int32_or"
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external logxor: t -> t -> t = "int32_xor"
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external shift_left: t -> int -> t = "int32_shift_left"
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external shift_right: t -> int -> t = "int32_shift_right"
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external shift_right_logical: t -> int -> t = "int32_shift_right_unsigned"
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external of_int: int -> t = "int32_of_int"
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external to_int: t -> int = "int32_to_int"
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let zero = of_int 0
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let one = of_int 1
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let minus_one = of_int (-1)
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let succ n = add n one
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let pred n = sub n one
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let abs n = if n >= zero then n else neg n
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let min = shift_left one 31
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let max = add min one
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let lognot n = logxor n minus_one
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external format : string -> t -> string = "int32_format"
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let to_string n = format "%d" n
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external of_string: string -> t = "int32_of_string"
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