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ntoh64.h

00001 
00002 /***************************************************************************
00003  *  ntoh64.h - Network <-> Host Byte Order conversion for uint64_t
00004  *
00005  *  Created: Sat Mar 21 12:48:22 2009
00006  *  Copyright  2009  Tim Niemueller [www.niemueller.de]
00007  *
00008  ****************************************************************************/
00009 
00010 /*  This program is free software; you can redistribute it and/or modify
00011  *  it under the terms of the GNU General Public License as published by
00012  *  the Free Software Foundation; either version 2 of the License, or
00013  *  (at your option) any later version. A runtime exception applies to
00014  *  this software (see LICENSE.GPL_WRE file mentioned below for details).
00015  *
00016  *  This program is distributed in the hope that it will be useful,
00017  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
00018  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00019  *  GNU Library General Public License for more details.
00020  *
00021  *  Read the full text in the LICENSE.GPL_WRE file in the doc directory.
00022  */
00023 
00024 #ifndef __NETCOMM_UTILS_NTOH64_H_
00025 #define __NETCOMM_UTILS_NTOH64_H_
00026 
00027 #include <stdint.h>
00028 #include <arpa/inet.h>
00029 
00030 #define __ntoh64(x) (((uint64_t)(ntohl((uint32_t)(((uint64_t)x << 32) >> 32))) << 32) | \
00031                        (uint32_t)ntohl(((uint32_t)((uint64_t)x >> 32))))
00032 
00033 #define __hton64(x) ntohll(x)
00034 
00035 #ifdef __OPTIMIZE__
00036 #  define ntoh64(x) __ntoh64(x)
00037 #  define hton64(x) __ntoh64(x)
00038 #else
00039 
00040 inline uint64_t
00041 ntoh64(uint64_t x)
00042 {
00043   return __ntoh64(x);
00044 }
00045 
00046 inline uint64_t
00047 hton64(uint64_t x)
00048 {
00049   return __ntoh64(x);
00050 }
00051 
00052 #endif // __OPTIMIZE__
00053 
00054 #endif // __NETCOMM_UTILS_NTOH64_
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