Bitcoin ABC  0.22.12
P2P Digital Currency
endian.h
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1 // Copyright (c) 2014-2016 The Bitcoin Core developers
2 // Distributed under the MIT software license, see the accompanying
3 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
4 
5 #ifndef BITCOIN_COMPAT_ENDIAN_H
6 #define BITCOIN_COMPAT_ENDIAN_H
7 
8 #if defined(HAVE_CONFIG_H)
9 #include <config/bitcoin-config.h>
10 #endif
11 
12 #include <compat/byteswap.h>
13 
14 #include <cstdint>
15 
16 #if defined(HAVE_ENDIAN_H)
17 #include <endian.h>
18 #elif defined(HAVE_SYS_ENDIAN_H)
19 #include <sys/endian.h>
20 #endif
21 
22 #ifndef HAVE_CONFIG_H
23 // While not technically a supported configuration, defaulting to defining these
24 // DECLs when we were compiled without autotools makes it easier for other build
25 // systems to build things like libbitcoinconsensus for strange targets.
26 #ifdef htobe16
27 #define HAVE_DECL_HTOBE16 1
28 #endif
29 #ifdef htole16
30 #define HAVE_DECL_HTOLE16 1
31 #endif
32 #ifdef be16toh
33 #define HAVE_DECL_BE16TOH 1
34 #endif
35 #ifdef le16toh
36 #define HAVE_DECL_LE16TOH 1
37 #endif
38 
39 #ifdef htobe32
40 #define HAVE_DECL_HTOBE32 1
41 #endif
42 #ifdef htole32
43 #define HAVE_DECL_HTOLE32 1
44 #endif
45 #ifdef be32toh
46 #define HAVE_DECL_BE32TOH 1
47 #endif
48 #ifdef le32toh
49 #define HAVE_DECL_LE32TOH 1
50 #endif
51 
52 #ifdef htobe64
53 #define HAVE_DECL_HTOBE64 1
54 #endif
55 #ifdef htole64
56 #define HAVE_DECL_HTOLE64 1
57 #endif
58 #ifdef be64toh
59 #define HAVE_DECL_BE64TOH 1
60 #endif
61 #ifdef le64toh
62 #define HAVE_DECL_LE64TOH 1
63 #endif
64 
65 #endif // HAVE_CONFIG_H
66 
67 #if defined(WORDS_BIGENDIAN)
68 
69 #if HAVE_DECL_HTOBE16 == 0
70 inline uint16_t htobe16(uint16_t host_16bits) {
71  return host_16bits;
72 }
73 #endif // HAVE_DECL_HTOBE16
74 
75 #if HAVE_DECL_HTOLE16 == 0
76 inline uint16_t htole16(uint16_t host_16bits) {
77  return bswap_16(host_16bits);
78 }
79 #endif // HAVE_DECL_HTOLE16
80 
81 #if HAVE_DECL_BE16TOH == 0
82 inline uint16_t be16toh(uint16_t big_endian_16bits) {
83  return big_endian_16bits;
84 }
85 #endif // HAVE_DECL_BE16TOH
86 
87 #if HAVE_DECL_LE16TOH == 0
88 inline uint16_t le16toh(uint16_t little_endian_16bits) {
89  return bswap_16(little_endian_16bits);
90 }
91 #endif // HAVE_DECL_LE16TOH
92 
93 #if HAVE_DECL_HTOBE32 == 0
94 inline uint32_t htobe32(uint32_t host_32bits) {
95  return host_32bits;
96 }
97 #endif // HAVE_DECL_HTOBE32
98 
99 #if HAVE_DECL_HTOLE32 == 0
100 inline uint32_t htole32(uint32_t host_32bits) {
101  return bswap_32(host_32bits);
102 }
103 #endif // HAVE_DECL_HTOLE32
104 
105 #if HAVE_DECL_BE32TOH == 0
106 inline uint32_t be32toh(uint32_t big_endian_32bits) {
107  return big_endian_32bits;
108 }
109 #endif // HAVE_DECL_BE32TOH
110 
111 #if HAVE_DECL_LE32TOH == 0
112 inline uint32_t le32toh(uint32_t little_endian_32bits) {
113  return bswap_32(little_endian_32bits);
114 }
115 #endif // HAVE_DECL_LE32TOH
116 
117 #if HAVE_DECL_HTOBE64 == 0
118 inline uint64_t htobe64(uint64_t host_64bits) {
119  return host_64bits;
120 }
121 #endif // HAVE_DECL_HTOBE64
122 
123 #if HAVE_DECL_HTOLE64 == 0
124 inline uint64_t htole64(uint64_t host_64bits) {
125  return bswap_64(host_64bits);
126 }
127 #endif // HAVE_DECL_HTOLE64
128 
129 #if HAVE_DECL_BE64TOH == 0
130 inline uint64_t be64toh(uint64_t big_endian_64bits) {
131  return big_endian_64bits;
132 }
133 #endif // HAVE_DECL_BE64TOH
134 
135 #if HAVE_DECL_LE64TOH == 0
136 inline uint64_t le64toh(uint64_t little_endian_64bits) {
137  return bswap_64(little_endian_64bits);
138 }
139 #endif // HAVE_DECL_LE64TOH
140 
141 #else // WORDS_BIGENDIAN
142 
143 #if HAVE_DECL_HTOBE16 == 0
144 inline uint16_t htobe16(uint16_t host_16bits) {
145  return bswap_16(host_16bits);
146 }
147 #endif // HAVE_DECL_HTOBE16
148 
149 #if HAVE_DECL_HTOLE16 == 0
150 inline uint16_t htole16(uint16_t host_16bits) {
151  return host_16bits;
152 }
153 #endif // HAVE_DECL_HTOLE16
154 
155 #if HAVE_DECL_BE16TOH == 0
156 inline uint16_t be16toh(uint16_t big_endian_16bits) {
157  return bswap_16(big_endian_16bits);
158 }
159 #endif // HAVE_DECL_BE16TOH
160 
161 #if HAVE_DECL_LE16TOH == 0
162 inline uint16_t le16toh(uint16_t little_endian_16bits) {
163  return little_endian_16bits;
164 }
165 #endif // HAVE_DECL_LE16TOH
166 
167 #if HAVE_DECL_HTOBE32 == 0
168 inline uint32_t htobe32(uint32_t host_32bits) {
169  return bswap_32(host_32bits);
170 }
171 #endif // HAVE_DECL_HTOBE32
172 
173 #if HAVE_DECL_HTOLE32 == 0
174 inline uint32_t htole32(uint32_t host_32bits) {
175  return host_32bits;
176 }
177 #endif // HAVE_DECL_HTOLE32
178 
179 #if HAVE_DECL_BE32TOH == 0
180 inline uint32_t be32toh(uint32_t big_endian_32bits) {
181  return bswap_32(big_endian_32bits);
182 }
183 #endif // HAVE_DECL_BE32TOH
184 
185 #if HAVE_DECL_LE32TOH == 0
186 inline uint32_t le32toh(uint32_t little_endian_32bits) {
187  return little_endian_32bits;
188 }
189 #endif // HAVE_DECL_LE32TOH
190 
191 #if HAVE_DECL_HTOBE64 == 0
192 inline uint64_t htobe64(uint64_t host_64bits) {
193  return bswap_64(host_64bits);
194 }
195 #endif // HAVE_DECL_HTOBE64
196 
197 #if HAVE_DECL_HTOLE64 == 0
198 inline uint64_t htole64(uint64_t host_64bits) {
199  return host_64bits;
200 }
201 #endif // HAVE_DECL_HTOLE64
202 
203 #if HAVE_DECL_BE64TOH == 0
204 inline uint64_t be64toh(uint64_t big_endian_64bits) {
205  return bswap_64(big_endian_64bits);
206 }
207 #endif // HAVE_DECL_BE64TOH
208 
209 #if HAVE_DECL_LE64TOH == 0
210 inline uint64_t le64toh(uint64_t little_endian_64bits) {
211  return little_endian_64bits;
212 }
213 #endif // HAVE_DECL_LE64TOH
214 
215 #endif // WORDS_BIGENDIAN
216 
217 #endif // BITCOIN_COMPAT_ENDIAN_H
uint64_t htobe64(uint64_t host_64bits)
Definition: endian.h:192
uint32_t be32toh(uint32_t big_endian_32bits)
Definition: endian.h:180
uint32_t htole32(uint32_t host_32bits)
Definition: endian.h:174
uint32_t bswap_32(uint32_t x)
Definition: byteswap.h:43
uint32_t htobe32(uint32_t host_32bits)
Definition: endian.h:168
uint64_t be64toh(uint64_t big_endian_64bits)
Definition: endian.h:204
uint16_t htobe16(uint16_t host_16bits)
Definition: endian.h:144
uint16_t bswap_16(uint16_t x)
Definition: byteswap.h:37
uint16_t le16toh(uint16_t little_endian_16bits)
Definition: endian.h:162
uint16_t htole16(uint16_t host_16bits)
Definition: endian.h:150
uint64_t le64toh(uint64_t little_endian_64bits)
Definition: endian.h:210
uint64_t bswap_64(uint64_t x)
Definition: byteswap.h:50
uint16_t be16toh(uint16_t big_endian_16bits)
Definition: endian.h:156
uint64_t htole64(uint64_t host_64bits)
Definition: endian.h:198
uint32_t le32toh(uint32_t little_endian_32bits)
Definition: endian.h:186