X-Git-Url: https://codewiz.org/gitweb?a=blobdiff_plain;f=bertos%2Fcfg%2Fmacros.h;h=3ec6b277e51f320f87937098c1a88094ce965a1d;hb=bfe473a7e8951b16edbd6559b828a37e6ce378aa;hp=0dad9d393effcb3f44abfa7aa85264c342a27206;hpb=3869cb55efcc879e7df05b785ce9759cb59b5836;p=bertos.git

diff --git a/bertos/cfg/macros.h b/bertos/cfg/macros.h
index 0dad9d39..3ec6b277 100644
--- a/bertos/cfg/macros.h
+++ b/bertos/cfg/macros.h
@@ -32,7 +32,6 @@
  *
  * \brief Common and handy function macros
  *
- * \version $Id$
  * \author Bernie Innocenti <bernie@codewiz.org>
  * \author Giovanni Bajo <rasky@develer.com>
  */
@@ -95,6 +94,11 @@
 	#define MAX(a,b)	(((a) > (b)) ? (a) : (b))
 #endif /* !(COMPILER_STATEMENT_EXPRESSIONS && COMPILER_TYPEOF) */
 
+/** Align \p value to the next \p align boundary */
+#define ALIGN_UP(value, align)	(((value) & ((align) - 1)) ? \
+				(((value) + ((align) - 1)) & ~((align) - 1)) : \
+				(value))
+
 /** Bound \a x between \a min and \a max. */
 #define MINMAX(min,x,max)  (MIN(MAX(min, x), max))
 
@@ -158,7 +162,7 @@
  * Reverse the bits contained in b (LSB becomes the MSB and so on).
  * \note \a b is evaluated twice
  */
-#define REVERSE(b) \
+#define REVERSE_UINT8(b) \
 	((uint8_t)((((b) * 0x0802UL & 0x22110UL) | ((b) * 0x8020UL & 0x88440UL)) * 0x10101UL >> 16))
 
 #ifndef BV
@@ -182,6 +186,13 @@
  */
 #define DIV_ROUND(dividend, divisor)  (((dividend) + (divisor) / 2) / (divisor))
 
+/**
+ * Perform an integer division rounding the result to the upper int value.
+ * \note \a divisor should preferibly be a costant, otherwise this macro generates
+ * 2 division. Also divisor is evaluated twice.
+ */
+#define DIV_ROUNDUP(dividend, divisor)  (((dividend) + (divisor) - 1) / (divisor))
+
 /** Round up \a x to an even multiple of the 2's power \a pad. */
 #define ROUND_UP2(x, pad) (((x) + ((pad) - 1)) & ~((pad) - 1))