Blob


1 /* $OpenBSD: endian.h,v 1.18 2006/03/27 07:09:24 otto Exp $ */
3 /*-
4 * Copyright (c) 1997 Niklas Hallqvist. All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 */
27 /*
28 * Generic definitions for little- and big-endian systems. Other endianesses
29 * has to be dealt with in the specific machine/endian.h file for that port.
30 *
31 * This file is meant to be included from a little- or big-endian port's
32 * machine/endian.h after setting _BYTE_ORDER to either 1234 for little endian
33 * or 4321 for big..
34 */
36 #define NTOHL(x) (x) = ntohl((u_int32_t)(x))
37 #define NTOHS(x) (x) = ntohs((u_int16_t)(x))
38 #define HTONL(x) (x) = htonl((u_int32_t)(x))
39 #define HTONS(x) (x) = htons((u_int16_t)(x))