Add ARRAY_SIZE() macro

1 files changed, 2 insertions, 0 deletions

diff --git a/types.h b/types.h
index 3002c6e..1146e25 100644
--- a/types.h
+++ b/types.h
@@ -13,6 +13,8 @@ typedef unsigned long long u64;
 typedef signed short s16;
 typedef signed int s32;
 
+#define ARRAY_SIZE(x) (sizeof x / sizeof x[0])
+
 #if 0
 #define subtype(_type, _base, _field) \
 	(void *)((u8 *)(_base) - __builtin_offsetof(_type, _field))