Mercurial > sdl-ios-xcode
diff include/SDL_byteorder.h @ 0:74212992fb08
Initial revision
author | Sam Lantinga <slouken@lokigames.com> |
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date | Thu, 26 Apr 2001 16:45:43 +0000 |
parents | |
children | cf2af46e9e2a |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/include/SDL_byteorder.h Thu Apr 26 16:45:43 2001 +0000 @@ -0,0 +1,51 @@ +/* + SDL - Simple DirectMedia Layer + Copyright (C) 1997, 1998, 1999, 2000, 2001 Sam Lantinga + + This library is free software; you can redistribute it and/or + modify it under the terms of the GNU Library General Public + License as published by the Free Software Foundation; either + version 2 of the License, or (at your option) any later version. + + This library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with this library; if not, write to the Free + Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + + Sam Lantinga + slouken@devolution.com +*/ + +#ifdef SAVE_RCSID +static char rcsid = + "@(#) $Id$"; +#endif + +/* Macros for determining the byte-order of this platform */ + +#ifndef _SDL_byteorder_h +#define _SDL_byteorder_h + +/* The two types of endianness */ +#define SDL_LIL_ENDIAN 1234 +#define SDL_BIG_ENDIAN 4321 + +/* Pardon the mess, I'm trying to determine the endianness of this host. + I'm doing it by preprocessor defines rather than some sort of configure + script so that application code can use this too. The "right" way would + be to dynamically generate this file on install, but that's a lot of work. + */ +#if defined(__i386__) || defined(WIN32) || \ + (defined(__alpha__) || defined(__alpha)) || \ + defined(__arm__) || \ + (defined(__mips__) && defined(__MIPSEL__)) +#define SDL_BYTEORDER SDL_LIL_ENDIAN +#else +#define SDL_BYTEORDER SDL_BIG_ENDIAN +#endif + +#endif /* _SDL_byteorder_h */