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Annotation of 43BSDTahoe/sys/vax/endian.h, revision 1.1.1.1

1.1       root        1: /*
                      2:  * Copyright (c) 1987 Regents of the University of California.
                      3:  * All rights reserved.
                      4:  *
                      5:  * Redistribution and use in source and binary forms are permitted
                      6:  * provided that the above copyright notice and this paragraph are
                      7:  * duplicated in all such forms and that any documentation,
                      8:  * advertising materials, and other materials related to such
                      9:  * distribution and use acknowledge that the software was developed
                     10:  * by the University of California, Berkeley.  The name of the
                     11:  * University may not be used to endorse or promote products derived
                     12:  * from this software without specific prior written permission.
                     13:  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
                     14:  * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
                     15:  * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
                     16:  *
                     17:  *     @(#)endian.h    7.3 (Berkeley) 6/29/88
                     18:  */
                     19: 
                     20: /*
                     21:  * Definitions for byte order,
                     22:  * according to byte significance from low address to high.
                     23:  */
                     24: #define        LITTLE_ENDIAN   1234    /* least-significant byte first (vax) */
                     25: #define        BIG_ENDIAN      4321    /* most-significant byte first (IBM, net) */
                     26: #define        PDP_ENDIAN      3412    /* LSB first in word, MSW first in long (pdp) */
                     27: 
                     28: #define        BYTE_ORDER      LITTLE_ENDIAN   /* byte order on vax */
                     29: 
                     30: /*
                     31:  * Macros for network/external number representation conversion.
                     32:  */
                     33: #if BYTE_ORDER == BIG_ENDIAN && !defined(lint)
                     34: #define        ntohl(x)        (x)
                     35: #define        ntohs(x)        (x)
                     36: #define        htonl(x)        (x)
                     37: #define        htons(x)        (x)
                     38: #else
                     39: unsigned short ntohs(), htons();
                     40: unsigned long  ntohl(), htonl();
                     41: #endif

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