summaryrefslogtreecommitdiffhomepage
path: root/libs/lmo/src/lmo_hash.c
diff options
context:
space:
mode:
Diffstat (limited to 'libs/lmo/src/lmo_hash.c')
-rw-r--r--libs/lmo/src/lmo_hash.c53
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;
-}
-