OpenTTD
endian_type.hpp
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1 /* $Id$ */
2 
3 /*
4  * This file is part of OpenTTD.
5  * OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
6  * OpenTTD 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.
7  * See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
8  */
9 
12 #ifndef ENDIAN_TYPE_HPP
13 #define ENDIAN_TYPE_HPP
14 
15 #if defined(ARM) || defined(__arm__) || defined(__alpha__)
16 
17  #define OTTD_ALIGNMENT 1
18 #else
19 
20  #define OTTD_ALIGNMENT 0
21 #endif
22 
24 #define TTD_LITTLE_ENDIAN 0
25 
26 #define TTD_BIG_ENDIAN 1
27 
28 /* Windows has always LITTLE_ENDIAN */
29 #if defined(_WIN32) || defined(__OS2__)
30 # define TTD_ENDIAN TTD_LITTLE_ENDIAN
31 #elif defined(OSX)
32 # include <sys/types.h>
33 # if __DARWIN_BYTE_ORDER == __DARWIN_LITTLE_ENDIAN
34 # define TTD_ENDIAN TTD_LITTLE_ENDIAN
35 # else
36 # define TTD_ENDIAN TTD_BIG_ENDIAN
37 # endif
38 #elif !defined(TESTING)
39 # include <sys/param.h>
40 # if __BYTE_ORDER == __LITTLE_ENDIAN
41 # define TTD_ENDIAN TTD_LITTLE_ENDIAN
42 # else
43 # define TTD_ENDIAN TTD_BIG_ENDIAN
44 # endif
45 #endif /* _WIN32 || __OS2__ */
46 
47 #endif /* ENDIAN_TYPE_HPP */