tanjent@gmail.com | f3b7897 | 2012-03-01 03:38:55 +0000 | [diff] [blame] | 1 | #pragma once |
| 2 | |
| 3 | #include "Platform.h" |
| 4 | |
| 5 | #include <vector> |
| 6 | |
| 7 | //----------------------------------------------------------------------------- |
| 8 | |
| 9 | void printbits ( const void * blob, int len ); |
| 10 | void printhex32 ( const void * blob, int len ); |
| 11 | void printbytes ( const void * blob, int len ); |
| 12 | void printbytes2 ( const void * blob, int len ); |
| 13 | |
| 14 | uint32_t popcount ( uint32_t v ); |
| 15 | uint32_t parity ( uint32_t v ); |
| 16 | |
| 17 | uint32_t getbit ( const void * blob, int len, uint32_t bit ); |
| 18 | uint32_t getbit_wrap ( const void * blob, int len, uint32_t bit ); |
| 19 | |
| 20 | void setbit ( void * blob, int len, uint32_t bit ); |
| 21 | void setbit ( void * blob, int len, uint32_t bit, uint32_t val ); |
| 22 | |
| 23 | void clearbit ( void * blob, int len, uint32_t bit ); |
| 24 | |
| 25 | void flipbit ( void * blob, int len, uint32_t bit ); |
| 26 | |
| 27 | int countbits ( uint32_t v ); |
| 28 | int countbits ( std::vector<uint32_t> & v ); |
| 29 | |
| 30 | int countbits ( const void * blob, int len ); |
| 31 | |
| 32 | void invert ( std::vector<uint32_t> & v ); |
| 33 | |
| 34 | //---------- |
| 35 | |
| 36 | template< typename T > |
| 37 | inline uint32_t getbit ( T & blob, uint32_t bit ) |
| 38 | { |
| 39 | return getbit(&blob,sizeof(blob),bit); |
| 40 | } |
| 41 | |
| 42 | template<> inline uint32_t getbit ( uint32_t & blob, uint32_t bit ) { return (blob >> (bit & 31)) & 1; } |
| 43 | template<> inline uint32_t getbit ( uint64_t & blob, uint32_t bit ) { return (blob >> (bit & 63)) & 1; } |
| 44 | |
| 45 | //---------- |
| 46 | |
| 47 | template< typename T > |
| 48 | inline void setbit ( T & blob, uint32_t bit ) |
| 49 | { |
| 50 | return setbit(&blob,sizeof(blob),bit); |
| 51 | } |
| 52 | |
| 53 | template<> inline void setbit ( uint32_t & blob, uint32_t bit ) { blob |= uint32_t(1) << (bit & 31); } |
| 54 | template<> inline void setbit ( uint64_t & blob, uint32_t bit ) { blob |= uint64_t(1) << (bit & 63); } |
| 55 | |
| 56 | //---------- |
| 57 | |
| 58 | template< typename T > |
| 59 | inline void flipbit ( T & blob, uint32_t bit ) |
| 60 | { |
| 61 | flipbit(&blob,sizeof(blob),bit); |
| 62 | } |
| 63 | |
| 64 | template<> inline void flipbit ( uint32_t & blob, uint32_t bit ) { bit &= 31; blob ^= (uint32_t(1) << bit); } |
| 65 | template<> inline void flipbit ( uint64_t & blob, uint32_t bit ) { bit &= 63; blob ^= (uint64_t(1) << bit); } |
| 66 | |
| 67 | //----------------------------------------------------------------------------- |
| 68 | // Left and right shift of blobs. The shift(N) versions work on chunks of N |
| 69 | // bits at a time (faster) |
| 70 | |
| 71 | void lshift1 ( void * blob, int len, int c ); |
| 72 | void lshift8 ( void * blob, int len, int c ); |
| 73 | void lshift32 ( void * blob, int len, int c ); |
| 74 | |
| 75 | void rshift1 ( void * blob, int len, int c ); |
| 76 | void rshift8 ( void * blob, int len, int c ); |
| 77 | void rshift32 ( void * blob, int len, int c ); |
| 78 | |
| 79 | inline void lshift ( void * blob, int len, int c ) |
| 80 | { |
| 81 | if((len & 3) == 0) |
| 82 | { |
| 83 | lshift32(blob,len,c); |
| 84 | } |
| 85 | else |
| 86 | { |
| 87 | lshift8(blob,len,c); |
| 88 | } |
| 89 | } |
| 90 | |
| 91 | inline void rshift ( void * blob, int len, int c ) |
| 92 | { |
| 93 | if((len & 3) == 0) |
| 94 | { |
| 95 | rshift32(blob,len,c); |
| 96 | } |
| 97 | else |
| 98 | { |
| 99 | rshift8(blob,len,c); |
| 100 | } |
| 101 | } |
| 102 | |
| 103 | template < typename T > |
| 104 | inline void lshift ( T & blob, int c ) |
| 105 | { |
| 106 | if((sizeof(T) & 3) == 0) |
| 107 | { |
| 108 | lshift32(&blob,sizeof(T),c); |
| 109 | } |
| 110 | else |
| 111 | { |
| 112 | lshift8(&blob,sizeof(T),c); |
| 113 | } |
| 114 | } |
| 115 | |
| 116 | template < typename T > |
| 117 | inline void rshift ( T & blob, int c ) |
| 118 | { |
| 119 | if((sizeof(T) & 3) == 0) |
| 120 | { |
| 121 | lshift32(&blob,sizeof(T),c); |
| 122 | } |
| 123 | else |
| 124 | { |
| 125 | lshift8(&blob,sizeof(T),c); |
| 126 | } |
| 127 | } |
| 128 | |
| 129 | template<> inline void lshift ( uint32_t & blob, int c ) { blob <<= c; } |
| 130 | template<> inline void lshift ( uint64_t & blob, int c ) { blob <<= c; } |
| 131 | template<> inline void rshift ( uint32_t & blob, int c ) { blob >>= c; } |
| 132 | template<> inline void rshift ( uint64_t & blob, int c ) { blob >>= c; } |
| 133 | |
| 134 | //----------------------------------------------------------------------------- |
| 135 | // Left and right rotate of blobs. The rot(N) versions work on chunks of N |
| 136 | // bits at a time (faster) |
| 137 | |
| 138 | void lrot1 ( void * blob, int len, int c ); |
| 139 | void lrot8 ( void * blob, int len, int c ); |
| 140 | void lrot32 ( void * blob, int len, int c ); |
| 141 | |
| 142 | void rrot1 ( void * blob, int len, int c ); |
| 143 | void rrot8 ( void * blob, int len, int c ); |
| 144 | void rrot32 ( void * blob, int len, int c ); |
| 145 | |
| 146 | inline void lrot ( void * blob, int len, int c ) |
| 147 | { |
| 148 | if((len & 3) == 0) |
| 149 | { |
| 150 | return lrot32(blob,len,c); |
| 151 | } |
| 152 | else |
| 153 | { |
| 154 | return lrot8(blob,len,c); |
| 155 | } |
| 156 | } |
| 157 | |
| 158 | inline void rrot ( void * blob, int len, int c ) |
| 159 | { |
| 160 | if((len & 3) == 0) |
| 161 | { |
| 162 | return rrot32(blob,len,c); |
| 163 | } |
| 164 | else |
| 165 | { |
| 166 | return rrot8(blob,len,c); |
| 167 | } |
| 168 | } |
| 169 | |
| 170 | template < typename T > |
| 171 | inline void lrot ( T & blob, int c ) |
| 172 | { |
| 173 | if((sizeof(T) & 3) == 0) |
| 174 | { |
| 175 | return lrot32(&blob,sizeof(T),c); |
| 176 | } |
| 177 | else |
| 178 | { |
| 179 | return lrot8(&blob,sizeof(T),c); |
| 180 | } |
| 181 | } |
| 182 | |
| 183 | template < typename T > |
| 184 | inline void rrot ( T & blob, int c ) |
| 185 | { |
| 186 | if((sizeof(T) & 3) == 0) |
| 187 | { |
| 188 | return rrot32(&blob,sizeof(T),c); |
| 189 | } |
| 190 | else |
| 191 | { |
| 192 | return rrot8(&blob,sizeof(T),c); |
| 193 | } |
| 194 | } |
| 195 | |
| 196 | template<> inline void lrot ( uint32_t & blob, int c ) { blob = ROTL32(blob,c); } |
| 197 | template<> inline void lrot ( uint64_t & blob, int c ) { blob = ROTL64(blob,c); } |
| 198 | template<> inline void rrot ( uint32_t & blob, int c ) { blob = ROTR32(blob,c); } |
| 199 | template<> inline void rrot ( uint64_t & blob, int c ) { blob = ROTR64(blob,c); } |
| 200 | |
| 201 | //----------------------------------------------------------------------------- |
| 202 | // Bit-windowing functions - select some N-bit subset of the input blob |
| 203 | |
| 204 | uint32_t window1 ( void * blob, int len, int start, int count ); |
| 205 | uint32_t window8 ( void * blob, int len, int start, int count ); |
| 206 | uint32_t window32 ( void * blob, int len, int start, int count ); |
| 207 | |
| 208 | inline uint32_t window ( void * blob, int len, int start, int count ) |
| 209 | { |
| 210 | if(len & 3) |
| 211 | { |
| 212 | return window8(blob,len,start,count); |
| 213 | } |
| 214 | else |
| 215 | { |
| 216 | return window32(blob,len,start,count); |
| 217 | } |
| 218 | } |
| 219 | |
| 220 | template < typename T > |
| 221 | inline uint32_t window ( T & blob, int start, int count ) |
| 222 | { |
| 223 | if((sizeof(T) & 3) == 0) |
| 224 | { |
| 225 | return window32(&blob,sizeof(T),start,count); |
| 226 | } |
| 227 | else |
| 228 | { |
| 229 | return window8(&blob,sizeof(T),start,count); |
| 230 | } |
| 231 | } |
| 232 | |
| 233 | template<> |
| 234 | inline uint32_t window ( uint32_t & blob, int start, int count ) |
| 235 | { |
| 236 | return ROTR32(blob,start) & ((1<<count)-1); |
| 237 | } |
| 238 | |
| 239 | template<> |
| 240 | inline uint32_t window ( uint64_t & blob, int start, int count ) |
| 241 | { |
| 242 | return (uint32_t)ROTR64(blob,start) & ((1<<count)-1); |
| 243 | } |
| 244 | |
| 245 | //----------------------------------------------------------------------------- |