include/SDL_byteorder.h
changeset 0 74212992fb08
child 1 cf2af46e9e2a
--- /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 */