Add macro to compute number of elements inside an array.

2023-07-01 16:06:34 -04:00
parent 3ed59b6f55
commit 28276bf565
1 changed files with 7 additions and 0 deletions
@@ -71,3 +71,10 @@ typedef unsigned int pgprot_t;

 /// Counts the number of elements of an array.
 #define count_of(x) ((sizeof(x) / sizeof((x)[0])) / ((size_t)(!(sizeof(x) % sizeof((x)[0])))))
+
+#define swap(a, b)             \
+    do {                       \
+        typeof(a) temp = (a);  \
+        (a)            = (b);  \
+        (b)            = temp; \
+    } while (0)