/**
* Hash a normalized key.
* @param key the key to hash
* @param type whether the key is a normal key or a "stripped" key
* @param seed the seed value for the hash function
*/
uint32_t castle_norm_key_hash(const struct castle_norm_key *key,
c_btree_hash_enum_t type,
uint32_t seed)
{
const unsigned char *data, *boundary;
size_t len = castle_norm_key_len_get(key, &data), n_dim;
unsigned int dim;
switch (type)
{
case HASH_WHOLE_KEY:
return murmur_hash_32(data, len, seed);
case HASH_STRIPPED_KEYS:
n_dim = castle_norm_key_dim_get(&data);
BUG_ON(n_dim < HASH_STRIPPED_DIMS);
for (dim = 0, boundary = data; dim < HASH_STRIPPED_DIMS; ++dim)
boundary = castle_norm_key_dim_next(boundary);
return murmur_hash_32(data, boundary - data, seed);
default:
BUG();
}
}
static PyObject * murmur_hash2_aligned(PyObject *self, PyObject *args)
{
return murmur_hash_32(self, args, MurmurHashAligned2);
}
static PyObject * murmur_hash2_neutral(PyObject *self, PyObject *args)
{
return murmur_hash_32(self, args, MurmurHashNeutral2);
}
static PyObject * murmur_hash2a(PyObject *self, PyObject *args)
{
return murmur_hash_32(self, args, MurmurHash2A);
}
