include/SDL_byteorder.h
author Sam Lantinga <slouken@lokigames.com>
Thu, 26 Apr 2001 16:45:43 +0000
changeset 0 74212992fb08
child 1 cf2af46e9e2a
permissions -rw-r--r--
Initial revision
     1 /*
     2     SDL - Simple DirectMedia Layer
     3     Copyright (C) 1997, 1998, 1999, 2000, 2001  Sam Lantinga
     4 
     5     This library is free software; you can redistribute it and/or
     6     modify it under the terms of the GNU Library General Public
     7     License as published by the Free Software Foundation; either
     8     version 2 of the License, or (at your option) any later version.
     9 
    10     This library is distributed in the hope that it will be useful,
    11     but WITHOUT ANY WARRANTY; without even the implied warranty of
    12     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    13     Library General Public License for more details.
    14 
    15     You should have received a copy of the GNU Library General Public
    16     License along with this library; if not, write to the Free
    17     Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
    18 
    19     Sam Lantinga
    20     slouken@devolution.com
    21 */
    22 
    23 #ifdef SAVE_RCSID
    24 static char rcsid =
    25  "@(#) $Id$";
    26 #endif
    27 
    28 /* Macros for determining the byte-order of this platform */
    29 
    30 #ifndef _SDL_byteorder_h
    31 #define _SDL_byteorder_h
    32 
    33 /* The two types of endianness */
    34 #define SDL_LIL_ENDIAN	1234
    35 #define SDL_BIG_ENDIAN	4321
    36 
    37 /* Pardon the mess, I'm trying to determine the endianness of this host.
    38    I'm doing it by preprocessor defines rather than some sort of configure
    39    script so that application code can use this too.  The "right" way would
    40    be to dynamically generate this file on install, but that's a lot of work.
    41  */
    42 #if  defined(__i386__) || defined(WIN32) || \
    43     (defined(__alpha__) || defined(__alpha)) || \
    44      defined(__arm__) || \
    45     (defined(__mips__) && defined(__MIPSEL__))
    46 #define SDL_BYTEORDER	SDL_LIL_ENDIAN
    47 #else
    48 #define SDL_BYTEORDER	SDL_BIG_ENDIAN
    49 #endif
    50 
    51 #endif /* _SDL_byteorder_h */