nasmlib: Rename elements() macro to ARRAY_SIZE

ARRAY_SIZE is a well known name pointing out that
we're dealing with array in macro argument.

Also to be on a safe side prefix_name helper should
check the index been in bounds more precisely.

Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>

1 files changed, 1 insertions, 2 deletions

diff --git a/nasmlib.h b/nasmlib.h
index 02876c74..2c335e11 100644
--- a/nasmlib.h
+++ b/nasmlib.h
@@ -239,8 +239,7 @@ void standard_extension(char *inname, char *outname, char *extension);
  * This is a useful #define which I keep meaning to use more often:
  * the number of elements of a statically defined array.
  */
-
-#define elements(x)     ( sizeof(x) / sizeof(*(x)) )
+#define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]))
 
 /*
  * List handling