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comparison Core/Endianness.h @ 1938:48ad54f7b21f

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endianness
author Sebastien Jodogne <s.jodogne@gmail.com>
date Fri, 25 Mar 2016 10:24:51 +0100
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children d80a4fe8ffcc
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1937:3756bedaaa36 1938:48ad54f7b21f
1 /**
2 * Orthanc - A Lightweight, RESTful DICOM Store
3 * Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics
4 * Department, University Hospital of Liege, Belgium
5 *
6 * This program is free software: you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License as
8 * published by the Free Software Foundation, either version 3 of the
9 * License, or (at your option) any later version.
10 *
11 * In addition, as a special exception, the copyright holders of this
12 * program give permission to link the code of its release with the
13 * OpenSSL project's "OpenSSL" library (or with modified versions of it
14 * that use the same license as the "OpenSSL" library), and distribute
15 * the linked executables. You must obey the GNU General Public License
16 * in all respects for all of the code used other than "OpenSSL". If you
17 * modify file(s) with this exception, you may extend this exception to
18 * your version of the file(s), but you are not obligated to do so. If
19 * you do not wish to do so, delete this exception statement from your
20 * version. If you delete this exception statement from all source files
21 * in the program, then also delete it here.
22 *
23 * This program is distributed in the hope that it will be useful, but
24 * WITHOUT ANY WARRANTY; without even the implied warranty of
25 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
26 * General Public License for more details.
27 *
28 * You should have received a copy of the GNU General Public License
29 * along with this program. If not, see <http://www.gnu.org/licenses/>.
30 **/
31
32
33 #pragma once
34
35
36 /********************************************************************
37 ** LINUX ARCHITECTURES
38 ********************************************************************/
39
40 #if defined(__linux)
41 # include <endian.h>
42 #endif
43
44
45 /********************************************************************
46 ** WINDOWS ARCHITECTURES
47 **
48 ** On Windows, "host" will always be little-endian ("le").
49 ********************************************************************/
50
51 #if defined(_WIN32)
52 #include <winsock2.h>
53 # if defined(_MSC_VER)
54 // http://msdn.microsoft.com/en-us/library/a3140177.aspx
55 # define be16toh(x) _byteswap_ushort(x)
56 # define be32toh(x) _byteswap_ulong(x)
57 # define be64toh(x) _byteswap_uint64(x)
58 # else // MinGW
59 # define be16toh(x) __builtin_bswap16(x)
60 # define be32toh(x) __builtin_bswap32(x)
61 # define be64toh(x) __builtin_bswap64(x)
62 # endif
63
64 # define htobe16(x) be16toh(x)
65 # define htobe32(x) be32toh(x)
66 # define htobe64(x) be64toh(x)
67
68 # define htole16(x) x
69 # define htole32(x) x
70 # define htole64(x) x
71
72 # define le16toh(x) x
73 # define le32toh(x) x
74 # define le64toh(x) x
75 #endif
76
77
78 /********************************************************************
79 ** FREEBSD ARCHITECTURES
80 ********************************************************************/
81
82 #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
83 # include <arpa/inet.h>
84 #endif
85
86
87 /********************************************************************
88 ** APPLE ARCHITECTURES (including OS X)
89 ********************************************************************/
90
91 #if defined(__APPLE__)
92 # include <libkern/OSByteOrder.h>
93 # define be16toh(x) OSSwapBigToHostInt16(x)
94 # define be32toh(x) OSSwapBigToHostInt32(x)
95 # define be64toh(x) OSSwapBigToHostInt64(x)
96
97 # define htobe16(x) OSSwapHostToBigInt16(x)
98 # define htobe32(x) OSSwapHostToBigInt32(x)
99 # define htobe64(x) OSSwapHostToBigInt64(x)
100
101 # define htole16(x) OSSwapHostToLittleInt16(x)
102 # define htole32(x) OSSwapHostToLittleInt32(x)
103 # define htole64(x) OSSwapHostToLittleInt64(x)
104
105 # define le16toh(x) OSSwapLittleToHostInt16(x)
106 # define le32toh(x) OSSwapLittleToHostInt32(x)
107 # define le64toh(x) OSSwapLittleToHostInt64(x)
108 #endif