Return to endian.h CVS log

Up to [local] / prex-old / include / sys

Annotation of prex-old/include/sys/endian.h, Revision 1.1

1.1     ! nbrk        1: /*-
        !             2:  * Copyright (c) 1987, 1991, 1993
        !             3:  *     The Regents of the University of California.  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:  * 3. Neither the name of the University nor the names of its contributors
        !            14:  *    may be used to endorse or promote products derived from this software
        !            15:  *    without specific prior written permission.
        !            16:  *
        !            17:  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
        !            18:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
        !            19:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
        !            20:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
        !            21:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
        !            22:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
        !            23:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
        !            24:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
        !            25:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
        !            26:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
        !            27:  * SUCH DAMAGE.
        !            28:  *
        !            29:  *     @(#)endian.h    8.1 (Berkeley) 6/10/93
        !            30:  */
        !            31:
        !            32: #ifndef _SYS_ENDIAN_H_
        !            33: #define        _SYS_ENDIAN_H_
        !            34:
        !            35: /*
        !            36:  * Define the order of 32-bit words in 64-bit words.
        !            37:  */
        !            38: #define _QUAD_HIGHWORD 0
        !            39: #define _QUAD_LOWWORD 1
        !            40:
        !            41: /*
        !            42:  * Definitions for byte order, according to byte significance from low
        !            43:  * address to high.
        !            44:  */
        !            45: #define        LITTLE_ENDIAN   1234    /* LSB first: i386, vax */
        !            46: #define        BIG_ENDIAN      4321    /* MSB first: 68000, ibm, net */
        !            47: #define        PDP_ENDIAN      3412    /* LSB first in word, MSW first in long */
        !            48:
        !            49: #include <conf/config.h>
        !            50: #include <sys/cdefs.h>
        !            51: #include <sys/types.h>
        !            52:
        !            53: #ifdef CONFIG_BIG_ENDIAN
        !            54: #define        BYTE_ORDER      BIG_ENDIAN
        !            55: #else
        !            56: #define        BYTE_ORDER      LITTLE_ENDIAN
        !            57: #endif
        !            58:
        !            59: __BEGIN_DECLS
        !            60: uint32_t htonl(uint32_t);
        !            61: uint16_t htons(uint16_t);
        !            62: uint32_t ntohl(uint32_t);
        !            63: uint16_t ntohs(uint16_t);
        !            64: __END_DECLS
        !            65:
        !            66: /*
        !            67:  * Macros for network/external number representation conversion.
        !            68:  */
        !            69: #if BYTE_ORDER == BIG_ENDIAN && !defined(lint)
        !            70: #define        ntohl(x)        (x)
        !            71: #define        ntohs(x)        (x)
        !            72: #define        htonl(x)        (x)
        !            73: #define        htons(x)        (x)
        !            74:
        !            75: #define        NTOHL(x)        (x)
        !            76: #define        NTOHS(x)        (x)
        !            77: #define        HTONL(x)        (x)
        !            78: #define        HTONS(x)        (x)
        !            79:
        !            80: #else
        !            81:
        !            82: #define        NTOHL(x)        (x) = ntohl((uint32_t)(x))
        !            83: #define        NTOHS(x)        (x) = ntohs((uint16_t)(x))
        !            84: #define        HTONL(x)        (x) = htonl((uint32_t)(x))
        !            85: #define        HTONS(x)        (x) = htons((uint16_t)(x))
        !            86: #endif
        !            87: #endif /* !_SYS_ENDIAN_H_ */