DIV_ROUNDUP: new macro.

git-svn-id: https://src.develer.com/svnoss/bertos/trunk@3379 38d2e660-2303-0410-9eaa-f027e97ec537

diff --git a/bertos/cfg/macros.h b/bertos/cfg/macros.h
index 4f77b21e6c6c7227492156dea2329e59b9e6f6cf..caa2340f4792bedae0214eabbeb94b3bd73bea68 100644 (file)
--- a/bertos/cfg/macros.h
+++ b/bertos/cfg/macros.h
@@ -182,6 +182,13 @@
  */
 #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))