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