Eina: Added EINA_C_ARRAY_LENGTH.

This macro returns the length of a standard C array.

SVN revision: 67589

legacy/eina/ChangeLog

@@ -206,3 +206,9 @@
 2011-12-30  Vincent Torri
 
 	* Fix Eina_RWLock code on Windows > XP.
+
+2012-01-29  Tom Hacohen
+
+	* Added EINA_C_ARRAY_LENGTH, a macro that returns  the length of a
+	standard C array.
+

legacy/eina/src/include/eina_types.h

@@ -275,6 +275,16 @@ typedef void (*Eina_Free_Cb)(void *data);
  */
 #define EINA_FREE_CB(Function) ((Eina_Free_Cb)Function)
 
+/**
+ * @def EINA_C_ARRAY_LENGTH
+ * Macro to return the array length of a standard c array.
+ * For example:
+ * int foo[] = { 0, 1, 2, 3 };
+ * would return 4 and not 4 * sizeof(int).
+ * @since 1.2.0
+ */
+#define EINA_C_ARRAY_LENGTH(arr) (sizeof(arr) / sizeof((arr)[0]))
+
 /**
  * @}
  */