GNUnet  0.11.x
common_endian.c
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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 
28 #include "platform.h"
29 #include "gnunet_crypto_lib.h"
30 
31 #define LOG(kind, ...) GNUNET_log_from (kind, "util-common-endian", __VA_ARGS__)
32 
33 
34 #ifndef htonbe64
35 uint64_t
36 GNUNET_htonll (uint64_t n)
37 {
38 #if __BYTE_ORDER == __BIG_ENDIAN
39  return n;
40 #elif __BYTE_ORDER == __LITTLE_ENDIAN
41  return (((uint64_t) htonl (n)) << 32) + htonl (n >> 32);
42 #else
43  #error byteorder undefined
44 #endif
45 }
46 
47 
48 #endif
49 
50 
51 #ifndef be64toh
52 uint64_t
53 GNUNET_ntohll (uint64_t n)
54 {
55 #if __BYTE_ORDER == __BIG_ENDIAN
56  return n;
57 #elif __BYTE_ORDER == __LITTLE_ENDIAN
58  return (((uint64_t) ntohl (n)) << 32) + ntohl (n >> 32);
59 #else
60  #error byteorder undefined
61 #endif
62 }
63 
64 
65 #endif
66 
67 
73 double
75 {
76  double res;
77  uint64_t *in = (uint64_t *) &d;
78  uint64_t *out = (uint64_t *) &res;
79 
80  out[0] = GNUNET_htonll (in[0]);
81 
82  return res;
83 }
84 
85 
91 double
93 {
94  double res;
95  uint64_t *in = (uint64_t *) &d;
96  uint64_t *out = (uint64_t *) &res;
97 
98  out[0] = GNUNET_ntohll (in[0]);
99 
100  return res;
101 }
102 
103 
104 /* end of common_endian.c */
double GNUNET_ntoh_double(double d)
Convert double to host-byte-order.
Definition: common_endian.c:92
double GNUNET_hton_double(double d)
Convert double to network-byte-order.
Definition: common_endian.c:74
cryptographic primitives for GNUnet
static int res
uint64_t GNUNET_htonll(uint64_t n)
Convert unsigned 64-bit integer to network byte order.
Definition: common_endian.c:36
uint64_t GNUNET_ntohll(uint64_t n)
Convert unsigned 64-bit integer to host byte order.
Definition: common_endian.c:53