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  1. /* Copyright (C) 1995 DJ Delorie, see COPYING.DJ for details */
  2. /*
  3.  * Copyright (c) 1987, 1991 Regents of the University of California.
  4.  * All rights reserved.
  5.  *
  6.  * Redistribution and use in source and binary forms, with or without
  7.  * modification, are permitted provided that the following conditions
  8.  * are met:
  9.  * 1. Redistributions of source code must retain the above copyright
  10.  *    notice, this list of conditions and the following disclaimer.
  11.  * 2. Redistributions in binary form must reproduce the above copyright
  12.  *    notice, this list of conditions and the following disclaimer in the
  13.  *    documentation and/or other materials provided with the distribution.
  14.  * 3. All advertising materials mentioning features or use of this software
  15.  *    must display the following acknowledgement:
  16.  *      This product includes software developed by the University of
  17.  *      California, Berkeley and its contributors.
  18.  * 4. Neither the name of the University nor the names of its contributors
  19.  *    may be used to endorse or promote products derived from this software
  20.  *    without specific prior written permission.
  21.  *
  22.  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  23.  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  24.  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  25.  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  26.  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  27.  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  28.  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  29.  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  30.  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  31.  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  32.  * SUCH DAMAGE.
  33.  *
  34.  *      from: @(#)endian.h      7.8 (Berkeley) 4/3/91
  35.  */
  36.  
  37. #ifndef _MACHINE_ENDIAN_H_
  38. #define _MACHINE_ENDIAN_H_
  39.  
  40. /*
  41.  * Definitions for byte order, according to byte significance from low
  42.  * address to high.
  43.  */
  44. #define LITTLE_ENDIAN   1234    /* LSB first: i386, vax */
  45. #define BIG_ENDIAN      4321    /* MSB first: 68000, ibm, net */
  46. #define PDP_ENDIAN      3412    /* LSB first in word, MSW first in long */
  47.  
  48. #define BYTE_ORDER      LITTLE_ENDIAN
  49.  
  50. #include <sys/cdefs.h>
  51.  
  52. __BEGIN_DECLS
  53. unsigned long   htonl __P((unsigned long));
  54. unsigned short  htons __P((unsigned short));
  55. unsigned long   ntohl __P((unsigned long));
  56. unsigned short  ntohs __P((unsigned short));
  57. __END_DECLS
  58.  
  59. /*
  60.  * Macros for network/external number representation conversion.
  61.  */
  62. #define NTOHL(x)        (x) = ntohl((unsigned long)(x))
  63. #define NTOHS(x)        (x) = ntohs((unsigned short)(x))
  64. #define HTONL(x)        (x) = htonl((unsigned long)(x))
  65. #define HTONS(x)        (x) = htons((unsigned short)(x))
  66.  
  67. #endif /* _MACHINE_ENDIAN_H_ */
  68.