Mercurial > sdl-ios-xcode
view include/SDL_byteorder.h @ 91:e85e03f195b4
From: "Markus F.X.J. Oberhumer"
Subject: SDL CVS patches
below you will find some small patches against the
current SDL CVS.
It adresses these things:
1) Use "&" instead of "%" in some cases. For negative
signed integers (x % 8) is not always (x & 7),
and the compiler can produce slightly faster
code when using "&" here.
2) Some const issues.
author | Sam Lantinga <slouken@lokigames.com> |
---|---|
date | Sat, 07 Jul 2001 20:20:17 +0000 |
parents | 71bf2ad74dfa |
children | 83018110dce8 |
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/* 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(__ia64__) || defined(WIN32) || \ (defined(__alpha__) || defined(__alpha)) || \ defined(__arm__) || \ (defined(__mips__) && defined(__MIPSEL__)) || \ defined(__LITTLE_ENDIAN__) #define SDL_BYTEORDER SDL_LIL_ENDIAN #else #define SDL_BYTEORDER SDL_BIG_ENDIAN #endif #endif /* _SDL_byteorder_h */