BeeCrypt 4.2.1
endianness.h
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1/*
2 * Copyright (c) 1998, 1999, 2000, 2001, 2004 X-Way Rights BV
3 *
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation; either
7 * version 2.1 of the License, or (at your option) any later version.
8 *
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Lesser General Public License for more details.
13 *
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with this library; if not, write to the Free Software
16 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
17 *
18 */
19
20#ifndef _ENDIANNESS_H
21#define _ENDIANNESS_H
22
23#include "beecrypt/beecrypt.h"
24
25#if defined(__cplusplus) || HAVE_INLINE
26
27static inline int16_t _swap16(int16_t n)
28{
29 return ( ((n & 0xff) << 8) |
30 ((n & 0xff00) >> 8) );
31}
32# define swap16(n) _swap16(n)
33
34static inline uint16_t _swapu16(uint16_t n)
35{
36 return ( ((n & 0xffU) << 8) |
37 ((n & 0xff00U) >> 8) );
38}
39# define swapu16(n) _swap16(n)
40
41# ifdef __arch__swab32
42# define swap32(n) __arch__swab32(n)
43# define swapu32(n) __arch__swab32(n)
44# else
45
46static inline int32_t _swap32(int32_t n)
47{
48 return ( ((n & 0xff) << 24) |
49 ((n & 0xff00) << 8) |
50 ((n & 0xff0000) >> 8) |
51 ((n & 0xff000000) >> 24) );
52}
53# define swap32(n) _swap32(n)
54
55static inline uint32_t _swapu32(uint32_t n)
56{
57 return ( ((n & 0xffU) << 24) |
58 ((n & 0xff00U) << 8) |
59 ((n & 0xff0000U) >> 8) |
60 ((n & 0xff000000U) >> 24) );
61}
62# define swapu32(n) _swapu32(n)
63
64# endif
65
66# ifdef __arch__swab64
67# define swap64(n) __arch__swab64(n)
68# define swapu64(n) __arch__swab64(n)
69# else
70
71static inline int64_t _swap64(int64_t n)
72{
73 return ( ((n & ((int64_t) 0xff) ) << 56) |
74 ((n & ((int64_t) 0xff) << 8) << 40) |
75 ((n & ((int64_t) 0xff) << 16) << 24) |
76 ((n & ((int64_t) 0xff) << 24) << 8) |
77 ((n & ((int64_t) 0xff) << 32) >> 8) |
78 ((n & ((int64_t) 0xff) << 40) >> 24) |
79 ((n & ((int64_t) 0xff) << 48) >> 40) |
80 ((n & ((int64_t) 0xff) << 56) >> 56) );
81}
82# define swap64(n) _swap64(n)
83
84static inline uint64_t _swapu64(uint64_t n)
85{
86 return ( ((n & ((uint64_t) 0xff) ) << 56) |
87 ((n & ((uint64_t) 0xff) << 8) << 40) |
88 ((n & ((uint64_t) 0xff) << 16) << 24) |
89 ((n & ((uint64_t) 0xff) << 24) << 8) |
90 ((n & ((uint64_t) 0xff) << 32) >> 8) |
91 ((n & ((uint64_t) 0xff) << 40) >> 24) |
92 ((n & ((uint64_t) 0xff) << 48) >> 40) |
93 ((n & ((uint64_t) 0xff) << 56) >> 56) );
94}
95# define swapu64(n) _swapu64(n)
96
97# endif
98
99#else
101 int16_t swap16 (int16_t);
103uint16_t swapu16(uint16_t);
105 int32_t swap32 (int32_t);
107uint32_t swapu32(uint32_t);
109 int64_t swap64 (int64_t);
111uint64_t swapu64(uint64_t);
112#endif
113
114#ifdef __cplusplus
115extern "C" {
116#endif
117
118#ifdef __cplusplus
119}
120#endif
121
122#endif
#define BEECRYPTAPI
Definition: api.h:52
BeeCrypt API, headers.
static uint64_t _swapu64(uint64_t n)
Definition: endianness.h:84
static int64_t _swap64(int64_t n)
Definition: endianness.h:71
#define swap16(n)
Definition: endianness.h:32
#define swapu16(n)
Definition: endianness.h:39
static int16_t _swap16(int16_t n)
Definition: endianness.h:27
static int32_t _swap32(int32_t n)
Definition: endianness.h:46
#define swap32(n)
Definition: endianness.h:53
static uint32_t _swapu32(uint32_t n)
Definition: endianness.h:55
#define swap64(n)
Definition: endianness.h:82
#define swapu32(n)
Definition: endianness.h:62
#define swapu64(n)
Definition: endianness.h:95
static uint16_t _swapu16(uint16_t n)
Definition: endianness.h:34