atf_check_sbttous
atf_check_sbttous(0, 0);
atf_check_sbttous(0, 1);
atf_check_sbttous(1, (1ll << 32) / 1000000);
atf_check_sbttous(1000000, 1ll << 32);
atf_check_sbttous(1999999, (1ll << 33) - 1);
atf_check_sbttous(1999999, (1ll << 33) - 1);
atf_check_sbttous(2000000, 1ll << 33);
atf_check_sbttous(3999999, (1ll << 34) -1);
atf_check_sbttous(4000000, 1ll << 34);
atf_check_sbttous(1ll << 31, (1ull << 63) / 1000000);
atf_check_sbttous(1ll << 31, (1ull << 63) / 1000000 + 1);
atf_check_sbttous((1ll << 31) * 1000000, (1ull << 63) - 1);