5 return (x << r) | (x >> (32 - r));
8 unsigned int MurmurHash3(
unsigned int nHashSeed,
const std::vector<unsigned char>& vDataToHash)
15 const int nblocks = vDataToHash.size() / 4;
21 for(
int i = -nblocks; i; i++)
36 const uint8_t * tail = (
const uint8_t*)(&vDataToHash[0] + nblocks*4);
40 switch(vDataToHash.size() & 3)
42 case 3: k1 ^= tail[2] << 16;
43 case 2: k1 ^= tail[1] << 8;
44 case 1: k1 ^= tail[0];
45 k1 *= c1; k1 =
ROTL32(k1,15); k1 *= c2; h1 ^= k1;
50 h1 ^= vDataToHash.size();
unsigned int MurmurHash3(unsigned int nHashSeed, const std::vector< unsigned char > &vDataToHash)
uint32_t ROTL32(uint32_t x, int8_t r)