diff options
Diffstat (limited to 'libs/lmo/src/lmo_hash.c')
-rw-r--r-- | libs/lmo/src/lmo_hash.c | 53 |
1 files changed, 0 insertions, 53 deletions
diff --git a/libs/lmo/src/lmo_hash.c b/libs/lmo/src/lmo_hash.c deleted file mode 100644 index bc8e6fe4e..000000000 --- a/libs/lmo/src/lmo_hash.c +++ /dev/null @@ -1,53 +0,0 @@ -/* - * Hash function from http://www.azillionmonkeys.com/qed/hash.html - * Copyright (C) 2004-2008 by Paul Hsieh - */ - -#include "lmo.h" - -uint32_t sfh_hash(const char * data, int len) -{ - uint32_t hash = len, tmp; - int rem; - - if (len <= 0 || data == NULL) return 0; - - rem = len & 3; - len >>= 2; - - /* Main loop */ - for (;len > 0; len--) { - hash += sfh_get16(data); - tmp = (sfh_get16(data+2) << 11) ^ hash; - hash = (hash << 16) ^ tmp; - data += 2*sizeof(uint16_t); - hash += hash >> 11; - } - - /* Handle end cases */ - switch (rem) { - case 3: hash += sfh_get16(data); - hash ^= hash << 16; - hash ^= data[sizeof(uint16_t)] << 18; - hash += hash >> 11; - break; - case 2: hash += sfh_get16(data); - hash ^= hash << 11; - hash += hash >> 17; - break; - case 1: hash += *data; - hash ^= hash << 10; - hash += hash >> 1; - } - - /* Force "avalanching" of final 127 bits */ - hash ^= hash << 3; - hash += hash >> 5; - hash ^= hash << 4; - hash += hash >> 17; - hash ^= hash << 25; - hash += hash >> 6; - - return hash; -} - |