FreeBSD/Linux Kernel Cross Reference
sys/sys/endian.h
1 /*-
2 * Copyright (c) 2002 Thomas Moestl <tmm@FreeBSD.org>
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
26 * $FreeBSD$
27 */
28
29 #ifndef _SYS_ENDIAN_H_
30 #define _SYS_ENDIAN_H_
31
32 #include <sys/cdefs.h>
33 #include <machine/endian.h>
34
35 #if BYTE_ORDER == LITTLE_ENDIAN
36 #define htobe16(x) htons((x))
37 #define htobe32(x) htonl((x))
38 #define htole16(x) ((uint16_t)(x))
39 #define htole32(x) ((uint32_t)(x))
40 #define htole64(x) ((uint64_t)(x))
41
42 #define be16toh(x) ntohs((x))
43 #define be32toh(x) ntohl((x))
44 #define le16toh(x) ((uint16_t)(x))
45 #define le32toh(x) ((uint32_t)(x))
46 #define le64toh(x) ((uint64_t)(x))
47 #else
48 #error "Byte ordering unsupported."
49 #endif /* BYTE_ORDER == LITTLE_ENDIAN */
50
51 #endif /* _SYS_ENDIAN_H_ */
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