Add an ARRAY_SIZE() macro which returns the size of an array, regardless

of the data types of the individual array elements.

The macro is defined in lib.h, so code which uses it must include lib.h.

Signed-off-by: Uwe Hermann <uwe@hermann-uwe.de>
Acked-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>



git-svn-id: svn://coreboot.org/repository/LinuxBIOSv3@413 f3766cd6-281f-0410-b1cd-43a5c92072e9

include/lib.h

@@ -21,6 +21,12 @@
 #ifndef LIB_H
 #define LIB_H
 
+/**
+ * Return the size of a given array, no matter of which data type
+ * the individual array elements are.
+ */
+#define ARRAY_SIZE(a) (sizeof(a) / sizeof((a)[0]))
+
 int log2(unsigned int n);
 
 void udelay(unsigned int usecs);