another hash that i didnt really make (afaik)

2 files changed, 0 insertions, 90 deletions

diff --git a/src/hash/fasthash.c b/src/hash/fasthash.c
deleted file mode 100644
index 12ec3be..0000000
--- a/src/hash/fasthash.c
+++ /dev/null
@@ -1,82 +0,0 @@
-#include "../crypto.h"

-#include <inttypes.h>

-#include <stdint.h>

-//almost entirely taken from https://github.com/ztanml/fast-hash/blob/master/fasthash.c

-

-#define mix(h) ({					\

-			(h) ^= (h) >> 23;		\

-			(h) *= 0x2127599bf4325c37ULL;	\

-			(h) ^= (h) >> 47; })

-

-uint64_t fasthash64(uint8_t* in, size_t len, uint64_t seed){

-    uint64_t m = 0x880355f21e6d1965ULL;

-    uint64_t hash = seed ^ (len * m);

-    uint64_t* data = (uint64_t*)in;

-    uint64_t v;

-    for(;len >= 8; len-=8){

-        v=*data++;

-        hash^=mix(v);

-        hash*=m;

-

-        in+=4;

-    }

-

-    uint8_t* data2 = (uint8_t*)data;

-    v=0;

-

-    switch (len & 7) {

-	case 7: 

-        v ^= (uint64_t)data2[6] << 48;

-	case 6: 

-        v ^= (uint64_t)data2[5] << 40;

-	case 5:

-        v ^= (uint64_t)data2[4] << 32;

-	case 4: 

-        v ^= (uint64_t)data2[3] << 24;

-	case 3: 

-        v ^= (uint64_t)data2[2] << 16;

-	case 2: 

-        v ^= (uint64_t)data2[1] << 8;

-	case 1: 

-        v ^= (uint64_t)data2[0];

-		hash ^= mix(v);

-		hash *= m;

-	}

-

-    return mix(hash);

-}

-

-uint32_t fasthash32(uint8_t *buf, size_t len, uint32_t seed){

-    uint64_t hash = fasthash64(buf, len, seed);

-	return hash - (hash >> 32);

-}

-

-int l_fasthash64(lua_State* L){ 

-  size_t len = 0;

-  uint8_t* a = (uint8_t*)luaL_checklstring(L, 1, &len);

-  int argv = lua_gettop(L);

-  uint64_t seed = 0;

-  if(argv > 1) seed = luaL_checkinteger(L, 2);

-

-  char digest[64];

-

-  uint64_t u = fasthash64(a, len, seed);

-  sprintf(digest,"%016"PRIx64,u);

-  lua_pushstring(L, digest);

-  return 1;

-}

-

-int l_fasthash32(lua_State* L){ 

-  size_t len = 0;

-  uint8_t* a = (uint8_t*)luaL_checklstring(L, 1, &len);

-  int argv = lua_gettop(L);

-  uint32_t seed = 0;

-  if(argv > 1) seed = luaL_checkinteger(L, 2);

-

-  char digest[32];

-

-  uint32_t u = fasthash32(a, len, seed);

-  sprintf(digest,"%04"PRIx32,u);

-  lua_pushstring(L, digest);

-  return 1;

-}

diff --git a/src/hash/fasthash.h b/src/hash/fasthash.h
deleted file mode 100644
index 0a950e7..0000000
--- a/src/hash/fasthash.h
+++ /dev/null
@@ -1,8 +0,0 @@
-#include "../lua.h"
-#include <stdint.h>
-
-uint64_t fasthash64(uint8_t* in, size_t len, uint64_t seed);
-uint32_t fasthash32(uint8_t *buf, size_t len, uint32_t seed);
-
-int l_fasthash32(lua_State*);
-int l_fasthash64(lua_State*);