.clang-format

@@ -15,4 +15,3 @@ AlignConsecutiveDeclarations:
   AlignFunctionPointers: false
   PadOperators:    false
 AlignConsecutiveMacros: true
-AllowShortCaseLabelsOnASingleLine: true

.gitignore

@@ -1,5 +1,4 @@
 *.o
-*.so
 .cache
 .json
 *.elf

lookup3.c

@@ -1,63 +0,0 @@
-#include <stdint.h>
-#include <stdlib.h>
-
-#define rot(x, k) (((x) << (k)) | ((x) >> (32 - (k))))
-
-// clang-format off
-#define mix(a,b,c) \
-{ \
-  a -= c;  a ^= rot(c, 4);  c += b; \
-  b -= a;  b ^= rot(a, 6);  a += c; \
-  c -= b;  c ^= rot(b, 8);  b += a; \
-  a -= c;  a ^= rot(c,16);  c += b; \
-  b -= a;  b ^= rot(a,19);  a += c; \
-  c -= b;  c ^= rot(b, 4);  b += a; \
-}
-
-#define final(a,b,c) \
-{ \
-  c ^= b; c -= rot(b,14); \
-  a ^= c; a -= rot(c,11); \
-  b ^= a; b -= rot(a,25); \
-  c ^= b; c -= rot(b,16); \
-  a ^= c; a -= rot(c,4);  \
-  b ^= a; b -= rot(a,14); \
-  c ^= b; c -= rot(b,24); \
-}
-// clang-format on
-
-uint32_t lookup3(const void *key, size_t length, uint32_t initval) {
-    uint32_t        a, b, c;
-    const uint8_t  *k;
-    const uint32_t *data32Bit;
-
-    data32Bit = key;
-    a = b = c = 0xdeadbeef + (((uint32_t)length) << 2) + initval;
-
-    while (length > 12) {
-        a += *(data32Bit++);
-        b += *(data32Bit++);
-        c += *(data32Bit++);
-        mix(a, b, c);
-        length -= 12;
-    }
-
-    k = (const uint8_t *)data32Bit;
-    switch (length) {
-    case 12: c += ((uint32_t)k[11]) << 24;
-    case 11: c += ((uint32_t)k[10]) << 16;
-    case 10: c += ((uint32_t)k[9]) << 8;
-    case 9: c += k[8];
-    case 8: b += ((uint32_t)k[7]) << 24;
-    case 7: b += ((uint32_t)k[6]) << 16;
-    case 6: b += ((uint32_t)k[5]) << 8;
-    case 5: b += k[4];
-    case 4: a += ((uint32_t)k[3]) << 24;
-    case 3: a += ((uint32_t)k[2]) << 16;
-    case 2: a += ((uint32_t)k[1]) << 8;
-    case 1: a += k[0]; break;
-    case 0: return c;
-    }
-    final(a, b, c);
-    return c;
-}

lua_lib/Makefile

@@ -1,21 +0,0 @@
-CC      ?= gcc
-CFLAGS  ?= -Wall -O2 -fPIC
-LDFLAGS ?=
-
-TARGET  = lookup3.so
-SRC     = lua_lookup3.c
-OBJS    = lua_lookup3.o lookup3.o
-
-all: $(TARGET)
-
-$(TARGET): $(OBJS)
-	$(CC) -shared -o $@ $^ $(LDFLAGS)
-
-lua_lookup3.o: $(SRC)
-	$(CC) $(CFLAGS) -c -o $@ $<
-
-lookup3.o: ../lookup3.c
-	$(CC) $(CFLAGS) -c -o $@ $<
-
-clean:
-	rm -f $(TARGET) $(OBJS)

lua_lib/driver.lua

@@ -1,2 +0,0 @@
-local myhash = require "lookup3"
-print(myhash.lookup3("hello", 0) % 100)

lua_lib/lua_lookup3.c

@@ -1,27 +0,0 @@
-#include <lua.h>
-#include <lauxlib.h>
-#include <stdint.h>
-
-uint32_t lookup3(const void *key, size_t length, uint32_t initval);
-
-// Lua wrapper
-static int l_lookup3(lua_State *L) {
-    size_t len;
-    const char *str = luaL_checklstring(L, 1, &len);  // get string + length
-    uint32_t initval = (uint32_t)luaL_checkinteger(L, 2); // get initval
-
-    uint32_t hash = lookup3(str, len, initval);
-
-    lua_pushinteger(L, hash);  // return the hash
-    return 1;                  // number of return values
-}
-
-// Module open function
-int luaopen_lookup3(lua_State *L) {
-    lua_newtable(L);
-
-    lua_pushcfunction(L, l_lookup3);
-    lua_setfield(L, -2, "lookup3");
-
-    return 1;  // return the table
-}