1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
|
#ifndef _RAR_RAWINT_
#define _RAR_RAWINT_
#define rotls(x,n,xsize) (((x)<<(n)) | ((x)>>(xsize-(n))))
#define rotrs(x,n,xsize) (((x)>>(n)) | ((x)<<(xsize-(n))))
#define rotl32(x,n) rotls(x,n,32)
#define rotr32(x,n) rotrs(x,n,32)
inline uint RawGet2(const void *Data)
{
byte *D=(byte *)Data;
return D[0]+(D[1]<<8);
}
inline uint32 RawGet4(const void *Data)
{
#if defined(BIG_ENDIAN) || !defined(ALLOW_MISALIGNED)
byte *D=(byte *)Data;
return D[0]+(D[1]<<8)+(D[2]<<16)+(D[3]<<24);
#else
return *(uint32 *)Data;
#endif
}
inline uint64 RawGet8(const void *Data)
{
#if defined(BIG_ENDIAN) || !defined(ALLOW_MISALIGNED)
byte *D=(byte *)Data;
return INT32TO64(RawGet4(D+4),RawGet4(D));
#else
return *(uint64 *)Data;
#endif
}
inline void RawPut2(uint Field,void *Data)
{
byte *D=(byte *)Data;
D[0]=(byte)(Field);
D[1]=(byte)(Field>>8);
}
inline void RawPut4(uint Field,void *Data)
{
#if defined(BIG_ENDIAN) || !defined(ALLOW_MISALIGNED)
byte *D=(byte *)Data;
D[0]=(byte)(Field);
D[1]=(byte)(Field>>8);
D[2]=(byte)(Field>>16);
D[3]=(byte)(Field>>24);
#else
*(uint32 *)Data=(uint32)Field;
#endif
}
inline void RawPut8(uint64 Field,void *Data)
{
#if defined(BIG_ENDIAN) || !defined(ALLOW_MISALIGNED)
byte *D=(byte *)Data;
D[0]=(byte)(Field);
D[1]=(byte)(Field>>8);
D[2]=(byte)(Field>>16);
D[3]=(byte)(Field>>24);
D[4]=(byte)(Field>>32);
D[5]=(byte)(Field>>40);
D[6]=(byte)(Field>>48);
D[7]=(byte)(Field>>56);
#else
*(uint64 *)Data=Field;
#endif
}
#if defined(LITTLE_ENDIAN) && defined(ALLOW_MISALIGNED)
#define USE_MEM_BYTESWAP
#endif
// Load 4 big endian bytes from memory and return uint32.
inline uint32 RawGetBE4(const byte *m)
{
#if defined(USE_MEM_BYTESWAP) && defined(_MSC_VER)
return _byteswap_ulong(*(uint32 *)m);
#elif defined(USE_MEM_BYTESWAP) && (defined(__clang__) || defined(__GNUC__))
return __builtin_bswap32(*(uint32 *)m);
#else
return uint32(m[0])<<24 | uint32(m[1])<<16 | uint32(m[2])<<8 | m[3];
#endif
}
// Load 8 big endian bytes from memory and return uint64.
inline uint64 RawGetBE8(const byte *m)
{
#if defined(USE_MEM_BYTESWAP) && defined(_MSC_VER)
return _byteswap_uint64(*(uint64 *)m);
#elif defined(USE_MEM_BYTESWAP) && (defined(__clang__) || defined(__GNUC__))
return __builtin_bswap64(*(uint64 *)m);
#else
return uint64(m[0])<<56 | uint64(m[1])<<48 | uint64(m[2])<<40 | uint64(m[3])<<32 |
uint64(m[4])<<24 | uint64(m[5])<<16 | uint64(m[6])<<8 | m[7];
#endif
}
// Save integer to memory as big endian.
inline void RawPutBE4(uint i,byte *mem)
{
#if defined(USE_MEM_BYTESWAP) && defined(_MSC_VER)
*(uint32*)mem = _byteswap_ulong((uint32)i);
#elif defined(USE_MEM_BYTESWAP) && (defined(__clang__) || defined(__GNUC__))
*(uint32*)mem = __builtin_bswap32((uint32)i);
#else
mem[0]=byte(i>>24);
mem[1]=byte(i>>16);
mem[2]=byte(i>>8);
mem[3]=byte(i);
#endif
}
// Save integer to memory as big endian.
inline void RawPutBE8(uint64 i,byte *mem)
{
#if defined(USE_MEM_BYTESWAP) && defined(_MSC_VER)
*(uint64*)mem = _byteswap_uint64(i);
#elif defined(USE_MEM_BYTESWAP) && (defined(__clang__) || defined(__GNUC__))
*(uint64*)mem = __builtin_bswap64(i);
#else
mem[0]=byte(i>>56);
mem[1]=byte(i>>48);
mem[2]=byte(i>>40);
mem[3]=byte(i>>32);
mem[4]=byte(i>>24);
mem[5]=byte(i>>16);
mem[6]=byte(i>>8);
mem[7]=byte(i);
#endif
}
inline uint32 ByteSwap32(uint32 i)
{
#ifdef _MSC_VER
return _byteswap_ulong(i);
#elif defined(__clang__) || defined(__GNUC__)
return __builtin_bswap32(i);
#else
return (rotl32(i,24)&0xFF00FF00)|(rotl32(i,8)&0x00FF00FF);
#endif
}
inline bool IsPow2(uint64 n) // Check if 'n' is power of 2.
{
return (n & (n-1))==0;
}
inline uint64 GetGreaterOrEqualPow2(uint64 n)
{
uint64 p=1;
while (p<n)
p*=2;
return p;
}
inline uint64 GetLessOrEqualPow2(uint64 n)
{
uint64 p=1;
while (p*2<=n)
p*=2;
return p;
}
#endif
|
