| 166 | } |
| 167 | |
| 168 | uint64_t SipHashUint256(uint64_t k0, uint64_t k1, const uint256& val) |
| 169 | { |
| 170 | /* Specialized implementation for efficiency */ |
| 171 | uint64_t d = val.GetUint64(0); |
| 172 | |
| 173 | uint64_t v0 = 0x736f6d6570736575ULL ^ k0; |
| 174 | uint64_t v1 = 0x646f72616e646f6dULL ^ k1; |
| 175 | uint64_t v2 = 0x6c7967656e657261ULL ^ k0; |
| 176 | uint64_t v3 = 0x7465646279746573ULL ^ k1 ^ d; |
| 177 | |
| 178 | SIPROUND; |
| 179 | SIPROUND; |
| 180 | v0 ^= d; |
| 181 | d = val.GetUint64(1); |
| 182 | v3 ^= d; |
| 183 | SIPROUND; |
| 184 | SIPROUND; |
| 185 | v0 ^= d; |
| 186 | d = val.GetUint64(2); |
| 187 | v3 ^= d; |
| 188 | SIPROUND; |
| 189 | SIPROUND; |
| 190 | v0 ^= d; |
| 191 | d = val.GetUint64(3); |
| 192 | v3 ^= d; |
| 193 | SIPROUND; |
| 194 | SIPROUND; |
| 195 | v0 ^= d; |
| 196 | v3 ^= ((uint64_t)4) << 59; |
| 197 | SIPROUND; |
| 198 | SIPROUND; |
| 199 | v0 ^= ((uint64_t)4) << 59; |
| 200 | v2 ^= 0xFF; |
| 201 | SIPROUND; |
| 202 | SIPROUND; |
| 203 | SIPROUND; |
| 204 | SIPROUND; |
| 205 | return v0 ^ v1 ^ v2 ^ v3; |
| 206 | } |
| 207 | |
| 208 | uint64_t SipHashUint256Extra(uint64_t k0, uint64_t k1, const uint256& val, uint32_t extra) |
| 209 | { |