s64_t
#define S64_SUB(_a, _b) ((s64_t) ((s64_t) (_a) - (s64_t) (_b)))
#define u64_SUB(_a, _b) ((u64_t) ((s64_t) (_a) - (s64_t) (_b)))
typedef s64_t S64;
#define S64_SUB(_a, _b) ((s64_t) ((s64_t) (_a) - (s64_t) (_b)))
#define u64_SUB(_a, _b) ((u64_t) ((s64_t) (_a) - (s64_t) (_b)))
typedef s64_t S64;
#define S64_SUB(_a, _b) ((s64_t) ((s64_t) (_a) - (s64_t) (_b)))
#define u64_SUB(_a, _b) ((u64_t) ((s64_t) (_a) - (s64_t) (_b)))