(* Binary data manipulation routines
   Copyright (C) 2008 Michael Bacarella <mbac@panix.com>

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 2 of the License, or
   (at your option) any later version.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
*)


let and32 x n = Int32.logand x n
let xor32 x y = Int32.logxor x y
let or32 x y = Int32.logor x y
let right32 x n = Int32.shift_right_logical x n
let left32 x n = Int32.shift_left x n
let add32 x y = Int32.add x y

let add64 x y = Int64.add x y

let int64eq x y = (Int64.compare x y) = 0
let int64true x = (int64eq x 0L) = false

let xor4_32 a b c d = (xor32 a (xor32 b (xor32 c d)))