'ceillog2' now is exported (other modules may need it)

lobject.c

@@ -1,5 +1,5 @@
 /*
-** $Id: lobject.c,v 2.26 2007/11/09 18:54:25 roberto Exp roberto $
+** $Id: lobject.c,v 2.27 2007/12/19 17:24:38 roberto Exp roberto $
 ** Some generic functions over Lua objects
 ** See Copyright Notice in lua.h
 */
@@ -33,7 +33,7 @@ const TValue luaO_nilobject_ = {{NULL}, LUA_TNIL};
 ** (eeeeexxx), where the real value is (1xxx) * 2^(eeeee - 1) if
 ** eeeee != 0 and (xxx) otherwise.
 */
-int luaO_int2fb (unsigned int x) {
+int luaO_int2fb (lu_int32 x) {
   int e = 0;  /* exponent */
   if (x < 8) return x;
   while (x >= 0x10) {
@@ -52,6 +52,24 @@ int luaO_fb2int (int x) {
 }
 
 
+int luaO_ceillog2 (unsigned int x) {
+  static const lu_byte log_2[256] = {
+    0,1,2,2,3,3,3,3,4,4,4,4,4,4,4,4,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,
+    6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,
+    7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
+    7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
+    8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,
+    8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,
+    8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,
+    8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8
+  };
+  int l = 0;
+  x--;
+  while (x >= 256) { l += 8; x >>= 8; }
+  return l + log_2[x];
+}
+
+
 int luaO_rawequalObj (const TValue *t1, const TValue *t2) {
   if (ttype(t1) != ttype(t2)) return 0;
   else switch (ttype(t1)) {

lobject.h

@@ -1,5 +1,5 @@
 /*
-** $Id: lobject.h,v 2.21 2006/09/11 14:07:24 roberto Exp roberto $
+** $Id: lobject.h,v 2.22 2007/04/10 12:18:17 roberto Exp roberto $
 ** Type definitions for Lua objects
 ** See Copyright Notice in lua.h
 */
@@ -366,6 +366,7 @@ LUAI_DATA const TValue luaO_nilobject_;
 
 LUAI_FUNC int luaO_int2fb (unsigned int x);
 LUAI_FUNC int luaO_fb2int (int x);
+LUAI_FUNC int luaO_ceillog2 (lu_int32 x);
 LUAI_FUNC int luaO_rawequalObj (const TValue *t1, const TValue *t2);
 LUAI_FUNC int luaO_str2d (const char *s, lua_Number *result);
 LUAI_FUNC const char *luaO_pushvfstring (lua_State *L, const char *fmt,

ltable.c

@@ -1,5 +1,5 @@
 /*
-** $Id: ltable.c,v 2.36 2007/04/10 12:18:17 roberto Exp roberto $
+** $Id: ltable.c,v 2.37 2007/04/18 19:24:35 roberto Exp roberto $
 ** Lua tables (hash)
 ** See Copyright Notice in lua.h
 */
@@ -186,24 +186,6 @@ int luaH_next (lua_State *L, Table *t, StkId key) {
 */
 
 
-static int ceillog2 (unsigned int x) {
-  static const lu_byte log_2[256] = {
-    0,1,2,2,3,3,3,3,4,4,4,4,4,4,4,4,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,5,
-    6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,6,
-    7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
-    7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
-    8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,
-    8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,
-    8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,
-    8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8
-  };
-  int l = 0;
-  x--;
-  while (x >= 256) { l += 8; x >>= 8; }
-  return l + log_2[x];
-}
-
-
 static int computesizes (int nums[], int *narray) {
   int i;
   int twotoi;  /* 2^i */
@@ -229,7 +211,7 @@ static int computesizes (int nums[], int *narray) {
 static int countint (const TValue *key, int *nums) {
   int k = arrayindex(key);
   if (0 < k && k <= MAXASIZE) {  /* is `key' an appropriate array index? */
-    nums[ceillog2(k)]++;  /* count as such */
+    nums[luaO_ceillog2(k)]++;  /* count as such */
     return 1;
   }
   else
@@ -295,7 +277,7 @@ static void setnodevector (lua_State *L, Table *t, int size) {
   }
   else {
     int i;
-    lsize = ceillog2(size);
+    lsize = luaO_ceillog2(size);
     if (lsize > MAXBITS)
       luaG_runerror(L, "table overflow");
     size = twoto(lsize);