projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| af359dea C |
1 | /* |
| 2 | * Copyright (c) 1987, 1991 Regents of the University of California. | |
| 3 | * All rights reserved. | |
| 4 | * | |
| c0567266 KB |
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 | * 3. All advertising materials mentioning features or use of this software | |
| 14 | * must display the following acknowledgement: | |
| 15 | * This product includes software developed by the University of | |
| 16 | * California, Berkeley and its contributors. | |
| 17 | * 4. Neither the name of the University nor the names of its contributors | |
| 18 | * may be used to endorse or promote products derived from this software | |
| 19 | * without specific prior written permission. | |
| 20 | * | |
| 21 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | |
| 22 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
| 23 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
| 24 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
| 25 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
| 26 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
| 27 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
| 28 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
| 29 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
| 30 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
| 31 | * SUCH DAMAGE. | |
| af359dea C |
32 | * |
| 33 | * @(#)endian.h 7.7 (Berkeley) 4/3/91 | |
| 34 | */ | |
| 35 | ||
| 36 | /* | |
| 37 | * Definitions for byte order, according to byte significance from low | |
| 38 | * address to high. | |
| 39 | */ | |
| 40 | #define LITTLE_ENDIAN 1234 /* LSB first: i386, vax */ | |
| 41 | #define BIG_ENDIAN 4321 /* MSB first: 68000, ibm, net */ | |
| 42 | #define PDP_ENDIAN 3412 /* LSB first in word, MSW first in long */ | |
| 43 | ||
| 44 | #define BYTE_ORDER BIG_ENDIAN | |
| 45 | ||
| 46 | #ifndef KERNEL | |
| 47 | #include <sys/cdefs.h> | |
| 48 | #endif | |
| 49 | ||
| 50 | __BEGIN_DECLS | |
| 51 | unsigned long htonl __P((unsigned long)); | |
| 52 | unsigned short htons __P((unsigned short)); | |
| 53 | unsigned long ntohl __P((unsigned long)); | |
| 54 | unsigned short ntohs __P((unsigned short)); | |
| 55 | __END_DECLS | |
| 56 | ||
| 57 | /* | |
| 58 | * Macros for network/external number representation conversion. | |
| 59 | */ | |
| 60 | #if BYTE_ORDER == BIG_ENDIAN && !defined(lint) | |
| 61 | #define ntohl(x) (x) | |
| 62 | #define ntohs(x) (x) | |
| 63 | #define htonl(x) (x) | |
| 64 | #define htons(x) (x) | |
| 65 | ||
| 66 | #define NTOHL(x) (x) | |
| 67 | #define NTOHS(x) (x) | |
| 68 | #define HTONL(x) (x) | |
| 69 | #define HTONS(x) (x) | |
| 70 | ||
| 71 | #else | |
| 72 | ||
| 73 | #define NTOHL(x) (x) = ntohl((u_long)x) | |
| 74 | #define NTOHS(x) (x) = ntohs((u_short)x) | |
| 75 | #define HTONL(x) (x) = htonl((u_long)x) | |
| 76 | #define HTONS(x) (x) = htons((u_short)x) | |
| 77 | #endif |