[gvg] 13585: Use bitwise operators for ROUND_UP/DOWN and rename them

Use bitwise operators for ROUND_UP/DOWN and rename them
to ROUND_UP_POW2/ROUND_DOWN_POW2
Modified: trunk/reactos/tools/mkhive/binhive.c
  _____  

Modified: trunk/reactos/tools/mkhive/binhive.c
--- trunk/reactos/tools/mkhive/binhive.c	2005-02-15 17:25:01 UTC
(rev 13584)
+++ trunk/reactos/tools/mkhive/binhive.c	2005-02-15 19:26:13 UTC
(rev 13585)
@@ -49,8 +49,8 @@

 #define  REG_EXTEND_HASH_TABLE_SIZE    4
 #define  REG_VALUE_LIST_CELL_MULTIPLE  4
 
-#define ROUND_DOWN(N, S) ((N) - ((N) % (S)))
-#define ROUND_UP(N, S) ROUND_DOWN((N) + (S) - 1, (S))
+#define ROUND_UP_POW2(N,S)   (((N) + (S) - 1) & ~((S) - 1))
+#define ROUND_DOWN_POW2(N,S) ((N) & ~((S) - 1))
 
 #define ABS_VALUE(V) (((V) < 0) ? -(V) : (V))
 
@@ -326,7 +326,7 @@
 
   BaseKeyName = strrchr(KeyName, '\\') + 1;
   NameSize = strlen(BaseKeyName);
-  CellSize = ROUND_UP(sizeof(KEY_CELL) + NameSize - 1, 16);
+  CellSize = ROUND_UP_POW2(sizeof(KEY_CELL) + NameSize - 1, 16);
 
   memset (RootKeyCell, 0, CellSize);
   RootKeyCell->CellSize = (ULONG)-(LONG)CellSize;
@@ -786,7 +786,7 @@
   *Block = NULL;
 
   /* Round to 16 bytes multiple */
-  CellSize = ROUND_UP(CellSize, 16);
+  CellSize = ROUND_UP_POW2(CellSize, 16);
 
   /* first search in free blocks */
   NewBlock = NULL;