GNUnet 0.22.2
common_endian.c
Go to the documentation of this file.
1/*
2 This file is part of GNUnet.
3 Copyright (C) 2001, 2002, 2003, 2004, 2006, 2012 GNUnet e.V.
4
5 GNUnet is free software: you can redistribute it and/or modify it
6 under the terms of the GNU Affero General Public License as published
7 by the Free Software Foundation, either version 3 of the License,
8 or (at your option) any later version.
9
10 GNUnet is distributed in the hope that it will be useful, but
11 WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Affero General Public License for more details.
14
15 You should have received a copy of the GNU Affero General Public License
16 along with this program. If not, see <http://www.gnu.org/licenses/>.
17
18 SPDX-License-Identifier: AGPL3.0-or-later
19 */
20
29#include "platform.h"
30#include "gnunet_util_lib.h"
31
32#define LOG(kind, ...) GNUNET_log_from (kind, "util-common-endian", __VA_ARGS__)
33
34
35#ifndef htobe64
36uint64_t
37GNUNET_htonll (uint64_t n)
38{
39#if __BYTE_ORDER == __BIG_ENDIAN
40 return n;
41#elif __BYTE_ORDER == __LITTLE_ENDIAN
42 return (((uint64_t) htonl (n)) << 32) + htonl (n >> 32);
43#else
44 #error byteorder undefined
45#endif
46}
47
48
49#endif
50
51
52#ifndef be64toh
53uint64_t
54GNUNET_ntohll (uint64_t n)
55{
56#if __BYTE_ORDER == __BIG_ENDIAN
57 return n;
58#elif __BYTE_ORDER == __LITTLE_ENDIAN
59 return (((uint64_t) ntohl (n)) << 32) + ntohl (n >> 32);
60#else
61 #error byteorder undefined
62#endif
63}
64
65
66#endif
67
68
69double
70GNUNET_hton_double (double d)
71{
72 double res;
73 uint64_t *in = (uint64_t *) &d;
74 uint64_t *out = (uint64_t *) &res;
75
76 out[0] = GNUNET_htonll (in[0]);
77
78 return res;
79}
80
81
82double
83GNUNET_ntoh_double (double d)
84{
85 double res;
86 uint64_t *in = (uint64_t *) &d;
87 uint64_t *out = (uint64_t *) &res;
88
89 out[0] = GNUNET_ntohll (in[0]);
90
91 return res;
92}
93
94
95/* end of common_endian.c */
d
static mp_limb_t d[(((256)+GMP_NUMB_BITS - 1)/GMP_NUMB_BITS)]
Definition: crypto_elligator.c:193
res
static char * res
Currently read line or NULL on EOF.
Definition: gnunet-namestore-zonefile.c:76
gnunet_util_lib.h
GNUNET_ntoh_double
double GNUNET_ntoh_double(double d)
Convert double to host byte order.
Definition: common_endian.c:83
GNUNET_ntohll
uint64_t GNUNET_ntohll(uint64_t n)
Convert unsigned 64-bit integer to host byte order.
Definition: common_endian.c:54
GNUNET_hton_double
double GNUNET_hton_double(double d)
Convert double to network byte order.
Definition: common_endian.c:70
GNUNET_htonll
uint64_t GNUNET_htonll(uint64_t n)
Convert unsigned 64-bit integer to network byte order.
Definition: common_endian.c:37