kHash2Size
if (p->numHashBytes > 2) p->fixedHashSize += kHash2Size;
#define kFix3HashSize (kHash2Size)
#define kFix4HashSize (kHash2Size + kHash3Size)
#define kFix5HashSize (kHash2Size + kHash3Size + kHash4Size)
hash2Value = temp & (kHash2Size - 1); \
hash2Value = temp & (kHash2Size - 1); \
hash2Value = temp & (kHash2Size - 1); \
hash2Value = (p->crc[cur[0]] ^ cur[1]) & (kHash2Size - 1);
hash2Value = temp & (kHash2Size - 1); \
hash2Value = temp & (kHash2Size - 1); \