1/*
2* Copyright (C) 2012 Google Inc. All rights reserved.
3*
4* Redistribution and use in source and binary forms, with or without
5* modification, are permitted provided that the following conditions are
6* met:
7*
8* * Redistributions of source code must retain the above copyright
9* notice, this list of conditions and the following disclaimer.
10* * Redistributions in binary form must reproduce the above
11* copyright notice, this list of conditions and the following disclaimer
12* in the documentation and/or other materials provided with the
13* distribution.
14* * Neither the name of Google Inc. nor the names of its
15* contributors may be used to endorse or promote products derived from
16* this software without specific prior written permission.
17*
18* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
21* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
22* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
23* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
24* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
28* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29*/
30
31#pragma once
32
33#if OS(UNIX)
34#include <arpa/inet.h>
35#endif
36
37#if OS(WINDOWS)
38
39namespace WTF {
40inline uint32_t wswap32(uint32_t x) { return ((x & 0xffff0000) >> 16) | ((x & 0x0000ffff) << 16); }
41inline uint32_t bswap32(uint32_t x) { return ((x & 0xff000000) >> 24) | ((x & 0x00ff0000) >> 8) | ((x & 0x0000ff00) << 8) | ((x & 0x000000ff) << 24); }
42inline uint16_t bswap16(uint16_t x) { return ((x & 0xff00) >> 8) | ((x & 0x00ff) << 8); }
43} // namespace WTF
44
45#if CPU(BIG_ENDIAN)
46inline uint16_t ntohs(uint16_t x) { return x; }
47inline uint16_t htons(uint16_t x) { return x; }
48inline uint32_t ntohl(uint32_t x) { return x; }
49inline uint32_t htonl(uint32_t x) { return x; }
50#elif CPU(MIDDLE_ENDIAN)
51inline uint16_t ntohs(uint16_t x) { return x; }
52inline uint16_t htons(uint16_t x) { return x; }
53inline uint32_t ntohl(uint32_t x) { return WTF::wswap32(x); }
54inline uint32_t htonl(uint32_t x) { return WTF::wswap32(x); }
55#else
56inline uint16_t ntohs(uint16_t x) { return WTF::bswap16(x); }
57inline uint16_t htons(uint16_t x) { return WTF::bswap16(x); }
58inline uint32_t ntohl(uint32_t x) { return WTF::bswap32(x); }
59inline uint32_t htonl(uint32_t x) { return WTF::bswap32(x); }
60#endif
61
62#endif // OS(WINDOWS)
63