1// "License": Public Domain
2// I, Mathias Panzenböck, place this file hereby into the public domain. Use it at your own risk for whatever you like.
3// In case there are jurisdictions that don't support putting things in the public domain you can also consider it to
4// be "dual licensed" under the BSD, MIT and Apache licenses, if you want to. This code is trivial anyway. Consider it
5// an example on how to get the endian conversion functions on different platforms.
6
7#ifndef PORTABLE_ENDIAN_H__
8#define PORTABLE_ENDIAN_H__
9
10#if (defined(_WIN16) || defined(_WIN32) || defined(_WIN64)) && !defined(__WINDOWS__)
11
12#	define __WINDOWS__
13
14#endif
15
16#if defined(__linux__) || defined(__CYGWIN__)
17
18#	include <endian.h>
19
20#elif defined(__APPLE__)
21
22#	include <libkern/OSByteOrder.h>
23
24#	define htobe16(x) OSSwapHostToBigInt16(x)
25#	define htole16(x) OSSwapHostToLittleInt16(x)
26#	define be16toh(x) OSSwapBigToHostInt16(x)
27#	define le16toh(x) OSSwapLittleToHostInt16(x)
28
29#	define htobe32(x) OSSwapHostToBigInt32(x)
30#	define htole32(x) OSSwapHostToLittleInt32(x)
31#	define be32toh(x) OSSwapBigToHostInt32(x)
32#	define le32toh(x) OSSwapLittleToHostInt32(x)
33
34#	define htobe64(x) OSSwapHostToBigInt64(x)
35#	define htole64(x) OSSwapHostToLittleInt64(x)
36#	define be64toh(x) OSSwapBigToHostInt64(x)
37#	define le64toh(x) OSSwapLittleToHostInt64(x)
38
39#	define __BYTE_ORDER    BYTE_ORDER
40#	define __BIG_ENDIAN    BIG_ENDIAN
41#	define __LITTLE_ENDIAN LITTLE_ENDIAN
42#	define __PDP_ENDIAN    PDP_ENDIAN
43
44#elif defined(__OpenBSD__)
45
46#	include <sys/endian.h>
47
48#elif defined(__NetBSD__) || defined(__FreeBSD__) || defined(__DragonFly__)
49
50#	include <sys/endian.h>
51
52#	define be16toh(x) betoh16(x)
53#	define le16toh(x) letoh16(x)
54
55#	define be32toh(x) betoh32(x)
56#	define le32toh(x) letoh32(x)
57
58#	define be64toh(x) betoh64(x)
59#	define le64toh(x) letoh64(x)
60
61#elif defined(__WINDOWS__)
62
63#	include <winsock2.h>
64#	include <sys/param.h>
65
66#	if BYTE_ORDER == LITTLE_ENDIAN
67
68#		define htobe16(x) htons(x)
69#		define htole16(x) (x)
70#		define be16toh(x) ntohs(x)
71#		define le16toh(x) (x)
72
73#		define htobe32(x) htonl(x)
74#		define htole32(x) (x)
75#		define be32toh(x) ntohl(x)
76#		define le32toh(x) (x)
77
78#		define htobe64(x) htonll(x)
79#		define htole64(x) (x)
80#		define be64toh(x) ntohll(x)
81#		define le64toh(x) (x)
82
83#	elif BYTE_ORDER == BIG_ENDIAN
84
85		/* that would be xbox 360 */
86#		define htobe16(x) (x)
87#		define htole16(x) __builtin_bswap16(x)
88#		define be16toh(x) (x)
89#		define le16toh(x) __builtin_bswap16(x)
90
91#		define htobe32(x) (x)
92#		define htole32(x) __builtin_bswap32(x)
93#		define be32toh(x) (x)
94#		define le32toh(x) __builtin_bswap32(x)
95
96#		define htobe64(x) (x)
97#		define htole64(x) __builtin_bswap64(x)
98#		define be64toh(x) (x)
99#		define le64toh(x) __builtin_bswap64(x)
100
101#	else
102
103#		error byte order not supported
104
105#	endif
106
107#	define __BYTE_ORDER    BYTE_ORDER
108#	define __BIG_ENDIAN    BIG_ENDIAN
109#	define __LITTLE_ENDIAN LITTLE_ENDIAN
110#	define __PDP_ENDIAN    PDP_ENDIAN
111
112#else
113
114#	error platform not supported
115
116#endif
117
118#endif
119