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/*===========================================================================*
* byteorder.h *
* *
* stuff to handle different byte order *
* *
*===========================================================================*/
/*
* Copyright (c) 1995 The Regents of the University of California.
* All rights reserved.
*
* Permission to use, copy, modify, and distribute this software and its
* documentation for any purpose, without fee, and without written agreement is
* hereby granted, provided that the above copyright notice and the following
* two paragraphs appear in all copies of this software.
*
* IN NO EVENT SHALL THE UNIVERSITY OF CALIFORNIA BE LIABLE TO ANY PARTY FOR
* DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES ARISING OUT
* OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF THE UNIVERSITY OF
* CALIFORNIA HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* THE UNIVERSITY OF CALIFORNIA SPECIFICALLY DISCLAIMS ANY WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
* AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE PROVIDED HEREUNDER IS
* ON AN "AS IS" BASIS, AND THE UNIVERSITY OF CALIFORNIA HAS NO OBLIGATION TO
* PROVIDE MAINTENANCE, SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS.
*/
/*
* $Header: /u/smoot/md/mpeg_encode/headers/RCS/byteorder.h,v 1.3 1995/01/19 23:54:39 eyhung Exp $
* $Log: byteorder.h,v $
* Revision 1.3 1995/01/19 23:54:39 eyhung
* Changed copyrights
*
* Revision 1.3 1995/01/19 23:54:39 eyhung
* Changed copyrights
*
* Revision 1.2 1994/11/12 02:12:15 keving
* nothing
*
* Revision 1.1 1993/07/22 22:24:23 keving
* nothing
*
*/
#include "general.h"
#ifdef FORCE_BIG_ENDIAN
/* leave byte order as it is */
#define htonl(x) (x)
#define ntohl(x) (x)
#define htons(x) (x)
#define ntohs(x) (x)
#else
#ifdef FORCE_LITTLE_ENDIAN
/* need to reverse byte order */
/* note -- we assume here that htonl is called on a variable, not a
* constant; thus, this is not for general use, but works with bitio.c
*/
#define htonl(x) \
((((unsigned char *)(&x))[0] << 24) | \
(((unsigned char *)(&x))[1] << 16) | \
(((unsigned char *)(&x))[2] << 8) | \
(((unsigned char *)(&x))[3]))
#define ntohl(x) htonl(x)
#define htons(x) \
((((unsigned char *)(&x))[0] << 8) | \
((unsigned char *)(&x))[1])
#define ntohs(x) htons(x)
#else
/* let in.h handle it, if possible */
#include <sys/types.h>
#if !defined(WIN32) || defined(__CYGWIN__)
#include <netinet/in.h>
#endif
#endif /* FORCE_LITTLE_ENDIAN */
#endif /* FORCE_BIG_ENDIAN */
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