Fawkes API  Fawkes Development Version
ntoh64.h
1 
2 /***************************************************************************
3  * ntoh64.h - Network <-> Host Byte Order conversion for uint64_t
4  *
5  * Created: Sat Mar 21 12:48:22 2009
6  * Copyright 2009 Tim Niemueller [www.niemueller.de]
7  *
8  ****************************************************************************/
9 
10 /* This program is free software; you can redistribute it and/or modify
11  * it under the terms of the GNU General Public License as published by
12  * the Free Software Foundation; either version 2 of the License, or
13  * (at your option) any later version. A runtime exception applies to
14  * this software (see LICENSE.GPL_WRE file mentioned below for details).
15  *
16  * This program is distributed in the hope that it will be useful,
17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19  * GNU Library General Public License for more details.
20  *
21  * Read the full text in the LICENSE.GPL_WRE file in the doc directory.
22  */
23 
24 #ifndef _NETCOMM_UTILS_NTOH64_H_
25 #define _NETCOMM_UTILS_NTOH64_H_
26 
27 #include <arpa/inet.h>
28 
29 #include <stdint.h>
30 
31 #define ntoh64_(x) \
32  (((uint64_t)(ntohl((uint32_t)(((uint64_t)x << 32) >> 32))) << 32) \
33  | (uint32_t)ntohl(((uint32_t)((uint64_t)x >> 32))))
34 
35 #define hton64_(x) ntohll(x)
36 
37 #ifdef __OPTIMIZE__
38 # define ntoh64(x) ntoh64_(x)
39 # define hton64(x) ntoh64_(x)
40 #else
41 
42 inline uint64_t
43 ntoh64(uint64_t x)
44 {
45  return ntoh64_(x);
46 }
47 
48 inline uint64_t
49 hton64(uint64_t x)
50 {
51  return ntoh64_(x);
52 }
53 
54 #endif // __OPTIMIZE__
55 
56 #endif // NETCOMM_UTILS_NTOH64__