max_t
#define max_t(type, a, b) max(((type) a), ((type) b))
#define max_t(type, x, y) __cmp_once(max, type, x, y)
#define max_t(type, x, y) max((type)x, (type)y)
#define max_t(type, x, y) ({ \
static __always_inline u64 max_t(enum num_t t, u64 x, u64 y)