Merge branch '721-atomic_max_ll-mistype' into 'master'

Resolve "Atomic_max_ll mistype"

Closes #721

See merge request !1211

src/atomic.h

@@ -179,7 +179,7 @@ __attribute__((always_inline)) INLINE static void atomic_max(
 __attribute__((always_inline)) INLINE static void atomic_max_ll(
     volatile long long *const address, const long long y) {
 
-  int test_val, old_val, new_val;
+  long long test_val, old_val, new_val;
   old_val = *address;
 
   do {