From: asterix <asterix@38d2e660-2303-0410-9eaa-f027e97ec537>
Date: Thu, 5 Jan 2012 17:25:53 +0000 (+0000)
Subject: Add IS_ALIGNED macro to test alignment of a pointer
X-Git-Url: https://codewiz.org/gitweb?a=commitdiff_plain;h=4a71fb58e067d3dc00fe1c29927f945bd34be49a;p=bertos.git

Add IS_ALIGNED macro to test alignment of a pointer

git-svn-id: https://src.develer.com/svnoss/bertos/trunk@5214 38d2e660-2303-0410-9eaa-f027e97ec537
---

diff --git a/bertos/cfg/macros.h b/bertos/cfg/macros.h
index 6c9b63ef..ff682fe2 100644
--- a/bertos/cfg/macros.h
+++ b/bertos/cfg/macros.h
@@ -250,6 +250,9 @@
 /** Check if \a x is an integer power of 2. */
 #define IS_POW2(x)     (!(bool)((x) & ((x)-1)))
 
+/** Check if \a x is aligned to \a byte_count bytes */
+#define IS_ALIGNED(x, byte_count) ((uintptr_t)(const void *)(x) % (byte_count) == 0)
+
 /** Calculate a compile-time log2 for a uint8_t */
 #define UINT8_LOG2(x) \
 	((x) < 2 ? 0 : \