C++ (Cpp) hash_packed Examples

Example #1

File: fch.c Project: fullstackenviormentss/sbmt

/** cmph_uint32 fch_search(void *packed_mphf, const char *key, cmph_uint32 keylen);
 *  \brief Use the packed mphf to do a search. 
 *  \param  packed_mphf pointer to the packed mphf
 *  \param key key to be hashed
 *  \param keylen key legth in bytes
 *  \return The mphf value
 */
cmph_uint32 fch_search_packed(void *packed_mphf, const char *key, cmph_uint32 keylen)
{
	register cmph_uint8 *h1_ptr = packed_mphf;
	register CMPH_HASH h1_type  = *((cmph_uint32 *)h1_ptr);
	h1_ptr += 4;

	register cmph_uint8 *h2_ptr = h1_ptr + hash_state_packed_size(h1_type);
	register CMPH_HASH h2_type  = *((cmph_uint32 *)h2_ptr);
	h2_ptr += 4;
	
	register cmph_uint32 *g_ptr = (cmph_uint32 *)(h2_ptr + hash_state_packed_size(h2_type));
	
	register cmph_uint32 m = *g_ptr++;  

	register cmph_uint32 b = *g_ptr++;  

	register double p1 = (double)(*((cmph_uint64 *)g_ptr));
	g_ptr += 2;

	register double p2 = (double)(*((cmph_uint64 *)g_ptr));
	g_ptr += 2;

	register cmph_uint32 h1 = hash_packed(h1_ptr, h1_type, key, keylen) % m; 
	register cmph_uint32 h2 = hash_packed(h2_ptr, h2_type, key, keylen) % m;

	h1 = mixh10h11h12 (b, p1, p2, h1);
	return (h2 + g_ptr[h1]) % m;
}

Example #2

File: bmz.c Project: BabeNovelty/glib-win32

/** cmph_uint32 bmz_search(void *packed_mphf, const char *key, cmph_uint32 keylen);
 *  \brief Use the packed mphf to do a search. 
 *  \param  packed_mphf pointer to the packed mphf
 *  \param key key to be hashed
 *  \param keylen key legth in bytes
 *  \return The mphf value
 */
cmph_uint32 bmz_search_packed(void *packed_mphf, const char *key, cmph_uint32 keylen)
{
	register cmph_uint8 *h1_ptr = packed_mphf;
	register CMPH_HASH h1_type  = *((cmph_uint32 *)h1_ptr);
    register cmph_uint8 *h2_ptr;
    register CMPH_HASH h2_type;
    register cmph_uint32 *g_ptr;
    register cmph_uint32 n;
    register cmph_uint32 h1;
    register cmph_uint32 h2;
	h1_ptr += 4;

	h2_ptr = h1_ptr + hash_state_packed_size(h1_type);
	h2_type  = *((cmph_uint32 *)h2_ptr);
	h2_ptr += 4;
	
	g_ptr = (cmph_uint32 *)(h2_ptr + hash_state_packed_size(h2_type));
	
	n = *g_ptr++;  
	
	h1 = hash_packed(h1_ptr, h1_type, key, keylen) % n; 
	h2 = hash_packed(h2_ptr, h2_type, key, keylen) % n; 
	if (h1 == h2 && ++h2 > n) h2 = 0;
	return (g_ptr[h1] + g_ptr[h2]);	
}

Example #3

File: brz.c Project: ceibal-tatu/gobject-introspection

static cmph_uint32 brz_fch_search_packed(cmph_uint32 *packed_mphf, const char *key, cmph_uint32 keylen, cmph_uint32 * fingerprint)
{
	register CMPH_HASH h0_type = *packed_mphf++;
	
	register cmph_uint32 *h0_ptr = packed_mphf;
	packed_mphf = (cmph_uint32 *)(((cmph_uint8 *)packed_mphf) + hash_state_packed_size(h0_type)); 
	
	register cmph_uint32 k = *packed_mphf++;

	register double c = (double)(*((cmph_uint64*)packed_mphf));
	packed_mphf += 2;

	register CMPH_HASH h1_type = *packed_mphf++; 

	register CMPH_HASH h2_type = *packed_mphf++; 

	register cmph_uint8 * size = (cmph_uint8 *) packed_mphf;
	packed_mphf = (cmph_uint32 *)(size + k);  
	
	register cmph_uint32 * offset = packed_mphf;
	packed_mphf += k;
	
	register cmph_uint32 h0;
	
	hash_vector_packed(h0_ptr, h0_type, key, keylen, fingerprint);
	h0 = fingerprint[2] % k;
	
	register cmph_uint32 m = size[h0];
	register cmph_uint32 b = fch_calc_b(c, m);
	register double p1 = fch_calc_p1(m);
	register double p2 = fch_calc_p2(b);
	
	#if defined (__ia64) || defined (__x86_64__)
		register cmph_uint64 * g_is_ptr = (cmph_uint64 *)packed_mphf;
	#else
		register cmph_uint32 * g_is_ptr = packed_mphf;
	#endif
	
	register cmph_uint8 * h1_ptr = (cmph_uint8 *) g_is_ptr[h0];
	
	register cmph_uint8 * h2_ptr = h1_ptr + hash_state_packed_size(h1_type);

	register cmph_uint8 * g = h2_ptr + hash_state_packed_size(h2_type);
	
	register cmph_uint32 h1 = hash_packed(h1_ptr, h1_type, key, keylen) % m;
	register cmph_uint32 h2 = hash_packed(h2_ptr, h2_type, key, keylen) % m;

	register cmph_uint8 mphf_bucket = 0;
	h1 = mixh10h11h12(b, p1, p2, h1);
	mphf_bucket = (cmph_uint8)((h2 + g[h1]) % m);
	return (mphf_bucket + offset[h0]);
}

Example #4

File: brz.c Project: ceibal-tatu/gobject-introspection

static cmph_uint32 brz_bmz8_search_packed(cmph_uint32 *packed_mphf, const char *key, cmph_uint32 keylen, cmph_uint32 * fingerprint)
{
	register CMPH_HASH h0_type = *packed_mphf++;
	register cmph_uint32 *h0_ptr = packed_mphf;
	packed_mphf = (cmph_uint32 *)(((cmph_uint8 *)packed_mphf) + hash_state_packed_size(h0_type)); 
	
	register cmph_uint32 k = *packed_mphf++;

	register double c = (double)(*((cmph_uint64*)packed_mphf));
	packed_mphf += 2;

	register CMPH_HASH h1_type = *packed_mphf++; 
	
	register CMPH_HASH h2_type = *packed_mphf++; 

	register cmph_uint8 * size = (cmph_uint8 *) packed_mphf;
	packed_mphf = (cmph_uint32 *)(size + k);  
	
	register cmph_uint32 * offset = packed_mphf;
	packed_mphf += k;

	register cmph_uint32 h0;
	
	hash_vector_packed(h0_ptr, h0_type, key, keylen, fingerprint);
	h0 = fingerprint[2] % k;
	
	register cmph_uint32 m = size[h0];
	register cmph_uint32 n = (cmph_uint32)ceil(c * m);

	#if defined (__ia64) || defined (__x86_64__)
		register cmph_uint64 * g_is_ptr = (cmph_uint64 *)packed_mphf;
	#else
		register cmph_uint32 * g_is_ptr = packed_mphf;
	#endif
	
	register cmph_uint8 * h1_ptr = (cmph_uint8 *) g_is_ptr[h0];
	
	register cmph_uint8 * h2_ptr = h1_ptr + hash_state_packed_size(h1_type);

	register cmph_uint8 * g = h2_ptr + hash_state_packed_size(h2_type);
	
	register cmph_uint32 h1 = hash_packed(h1_ptr, h1_type, key, keylen) % n;
	register cmph_uint32 h2 = hash_packed(h2_ptr, h2_type, key, keylen) % n;

	register cmph_uint8 mphf_bucket;
		
	if (h1 == h2 && ++h2 >= n) h2 = 0;
	mphf_bucket = (cmph_uint8)(g[h1] + g[h2]); 
	DEBUGP("key: %s h1: %u h2: %u h0: %u\n", key, h1, h2, h0);
	DEBUGP("Address: %u\n", mphf_bucket + offset[h0]);
	return (mphf_bucket + offset[h0]);	
}

Example #5

File: bmz8.c Project: biocore/sortmerna

/** cmph_uint8 bmz8_search(void *packed_mphf, const char *key, cmph_uint32 keylen);
 *  \brief Use the packed mphf to do a search.
 *  \param  packed_mphf pointer to the packed mphf
 *  \param key key to be hashed
 *  \param keylen key legth in bytes
 *  \return The mphf value
 */
cmph_uint8 bmz8_search_packed(void *packed_mphf, const char *key, cmph_uint32 keylen)
{
	register cmph_uint8 *h1_ptr = (cmph_uint8 *)packed_mphf;
	register CMPH_HASH h1_type  = (CMPH_HASH)(*((cmph_uint32 *)h1_ptr));
	h1_ptr += 4;

	register cmph_uint8 *h2_ptr = h1_ptr + hash_state_packed_size(h1_type);
	register CMPH_HASH h2_type  = (CMPH_HASH)(*((cmph_uint32 *)h2_ptr));
	h2_ptr += 4;

	register cmph_uint8 *g_ptr = h2_ptr + hash_state_packed_size(h2_type);

	register cmph_uint8 n = *g_ptr++;

	register cmph_uint8 h1 = (cmph_uint8)(hash_packed(h1_ptr, h1_type, key, keylen) % n);
	register cmph_uint8 h2 = (cmph_uint8)(hash_packed(h2_ptr, h2_type, key, keylen) % n);
	DEBUGP("key: %s h1: %u h2: %u\n", key, h1, h2);
	if (h1 == h2 && ++h2 > n) h2 = 0;
	return (cmph_uint8)(g_ptr[h1] + g_ptr[h2]);
}

Example #6

File: chm.c Project: h4ck3rm1k3/gobject-introspection

/** cmph_uint32 chm_search(void *packed_mphf, const char *key, cmph_uint32 keylen);
 *  \brief Use the packed mphf to do a search.
 *  \param  packed_mphf pointer to the packed mphf
 *  \param key key to be hashed
 *  \param keylen key legth in bytes
 *  \return The mphf value
 */
cmph_uint32 chm_search_packed(void *packed_mphf, const char *key, cmph_uint32 keylen)
{
    register cmph_uint8 *h1_ptr = packed_mphf;
    register CMPH_HASH h1_type  = *((cmph_uint32 *)h1_ptr);
    h1_ptr += 4;

    register cmph_uint8 *h2_ptr = h1_ptr + hash_state_packed_size(h1_type);
    register CMPH_HASH h2_type  = *((cmph_uint32 *)h2_ptr);
    h2_ptr += 4;

    register cmph_uint32 *g_ptr = (cmph_uint32 *)(h2_ptr + hash_state_packed_size(h2_type));

    register cmph_uint32 n = *g_ptr++;
    register cmph_uint32 m = *g_ptr++;

    register cmph_uint32 h1 = hash_packed(h1_ptr, h1_type, key, keylen) % n;
    register cmph_uint32 h2 = hash_packed(h2_ptr, h2_type, key, keylen) % n;
    DEBUGP("key: %s h1: %u h2: %u\n", key, h1, h2);
    if (h1 == h2 && ++h2 >= n) h2 = 0;
    DEBUGP("key: %s g[h1]: %u g[h2]: %u edges: %u\n", key, g_ptr[h1], g_ptr[h2], m);
    return (g_ptr[h1] + g_ptr[h2]) % m;
}