- uint32_t a, b, c;
-
- /* Set up the internal state */
- a = b = c = 0xdeadbeef + (((uint32_t) length) << 2) + initval;
-
- /*----------------------------------------- handle most of the key */
- while (length > 3) {
- a += k[0];
- b += k[1];
- c += k[2];
- mix(a, b, c);
- length -= 3;
- k += 3;
- }
-
- /*----------------------------------- handle the last 3 uint32_t's */
- switch (length) { /* all the case statements fall through */
- case 3: c += k[2];
- case 2: b += k[1];
- case 1: a += k[0];
- final(a, b, c);
- case 0: /* case 0: nothing left to add */
- break;
- }
- /*---------------------------------------------- report the result */
- return c;
-}
-
-static
-void hashword2(
- const uint32_t *k, /* the key, an array of uint32_t values */
- size_t length, /* the length of the key, in uint32_ts */
- uint32_t *pc, /* IN: seed OUT: primary hash value */
- uint32_t *pb) /* IN: more seed OUT: secondary hash value */
-{
- uint32_t a, b, c;
-
- /* Set up the internal state */
- a = b = c = 0xdeadbeef + ((uint32_t) (length << 2)) + *pc;
- c += *pb;
-
- /*----------------------------------------- handle most of the key */
- while (length > 3) {
- a += k[0];
- b += k[1];
- c += k[2];
- mix(a, b, c);
- length -= 3;
- k += 3;
- }
-
- /*----------------------------------- handle the last 3 uint32_t's */
- switch (length) { /* all the case statements fall through */
- case 3: c += k[2];
- case 2: b += k[1];
- case 1: a += k[0];
- final(a, b, c);
- case 0: /* case 0: nothing left to add */
- break;
- }
- /*---------------------------------------------- report the result */
- *pc = c;
- *pb = b;
-}
-
-#if (CAA_BITS_PER_LONG == 32)
-static
-unsigned long test_hash(void *_key, size_t length, unsigned long seed)
-{
- unsigned long key = (unsigned long) _key;
- unsigned long v;
-
- assert(length == sizeof(unsigned long));
- return hash_u32(&v, 1, seed);
-}
-#else
-static
-unsigned long test_hash(void *_key, size_t length, unsigned long seed)
-{
- union {
- uint64_t v64;
- uint32_t v32[2];
- } v;
- union {
- uint64_t v64;
- uint32_t v32[2];
- } key;
-
- assert(length == sizeof(unsigned long));
- v.v64 = (uint64_t) seed;
- key.v64 = (uint64_t) _key;
- hashword2(key.v32, 2, &v.v32[0], &v.v32[1]);
- return v.v64;
-}
-#endif
-
-static
-unsigned long test_compare(void *key1, size_t key1_len,
- void *key2, size_t key2_len)
-{
- if (unlikely(key1_len != key2_len))