4 f (long long x, long long y)
12 if ((y < 0) || (r >= 0))
17 if ((y > 0) || (r < 0))
38 f (0x8000000000000000LL, 0x8000000000000000LL);
42 f (0x8000000000000000LL, -1LL);
46 f (0x7fffffffffffffffLL, 0x7fffffffffffffffLL);
50 f (0x7fffffffffffffffLL, 1LL);
54 f (0x7fffffffffffffffLL, 0x8000000000000000LL);