{1350244992, 23960108, "1350244992.023960108"},
		{+1, +1e9 - 1e0, "1.999999999"},
		{+1, +1e9 - 1e3, "1.999999"},
		{+1, +1e9 - 1e6, "1.999"},
		{+1, +0e0 - 0e0, "1"},
		{+1, +1e6 - 0e0, "1.001"},
		{+1, +1e3 - 0e0, "1.000001"},
		{+1, +1e0 - 0e0, "1.000000001"},
		{0, 1e9 - 1e0, "0.999999999"},
		{0, 1e9 - 1e3, "0.999999"},
		{0, 1e9 - 1e6, "0.999"},
		{0, 0e0, "0"},
		{0, 1e6 + 0e0, "0.001"},

	if bt == zeroBintime {
		return fallback_nanotime()
	}
	return int64((1e9 * uint64(bt.sec)) + ((1e9 * uint64(bt.frac>>32)) >> 32))
}

func walltime() (sec int64, nsec int32) {
	bt := vdsoClockGettime(_CLOCK_REALTIME)
	if bt == zeroBintime {
		return fallback_walltime()
	}
	return int64(bt.sec), int32((1e9 * uint64(bt.frac>>32)) >> 32)

	uc_stack    stackt
	__spare__   [8]int32
}

type timespec struct {
	tv_sec  int64
	tv_nsec int64
}

//go:nosplit
func (ts *timespec) setNsec(ns int64) {
	ts.tv_sec = ns / 1e9
	ts.tv_nsec = ns % 1e9
}

type timeval struct {
	tv_sec  int64
	tv_usec int64
}

func (tv *timeval) set_usec(x int32) {
	tv.tv_usec = int64(x)
}

type itimerval struct {
	it_interval timeval

	pf := math.Copysign(f, 1)
	u := math.Floor(pf)
	return &S{
		u: int64(math.Copysign(u, s)),
		n: int32(math.Copysign((pf-u)*1e9, s)),
	}
}

func F2(f float64) *S {
	s := f
	f = math.Copysign(f, 1)
	u := math.Floor(f)
	return &S{
		u: int64(math.Copysign(u, s)),
		n: int32(math.Copysign((f-u)*1e9, s)),
	}
}

func main() {
	s1 := F1(-1)
	s2 := F2(-1)
	if *s1 != *s2 {
		println("F1:", s1.u, s1.n)

	_SIGEV_THREAD_ID = 0x4
)

type timespec struct {
	tv_sec  int64
	tv_nsec int64
}

//go:nosplit
func (ts *timespec) setNsec(ns int64) {
	ts.tv_sec = ns / 1e9
	ts.tv_nsec = ns % 1e9
}

type timeval struct {
	tv_sec  int64
	tv_usec int64
}

func (tv *timeval) set_usec(x int32) {
	tv.tv_usec = int64(x)
}

type itimerspec struct {

)

// constant arithmetic precision and rounding must lead to expected (integer) results
var _ = []int64{
	0.0005 * 1e9,
	0.001 * 1e9,
	0.005 * 1e9,
	0.01 * 1e9,
	0.05 * 1e9,
	0.1 * 1e9,
	0.5 * 1e9,
	1 * 1e9,
	5 * 1e9,
}

const _ = unsafe.Sizeof(func() {
	const _ = 0
	_ = iota

	const (
	   zero = iota
	   one
	)
	assert(one == 1)

	{
		x, y, z := fastrand(), fastrand(), fastrand()
		if x == y && y == z {
			t.Fatalf("fastrand three times = %#x, %#x, %#x, want different numbers", x, y, z)
		}
	}
	{
		x, y, z := fastrandn(1e9), fastrandn(1e9), fastrandn(1e9)
		if x == y && y == z {
			t.Fatalf("fastrandn three times = %#x, %#x, %#x, want different numbers", x, y, z)
		}
	}
	{
		x, y, z := fastrand64(), fastrand64(), fastrand64()
		if x == y && y == z {

		waitms = 0
	} else if delay < 1e6 {
		waitms = 1
	} else if delay < 1e15 {
		waitms = int32(delay / 1e6)
	} else {
		// An arbitrary cap on how long to wait for a timer.
		// 1e9 ms == ~11.5 days.
		waitms = 1e9
	}
	var events [128]syscall.EpollEvent
retry:
	n, errno := syscall.EpollWait(epfd, events[:], int32(len(events)), waitms)
	if errno != 0 {
		if errno != _EINTR {

	ss_flags  int32
	pad_cgo_0 [4]byte
}

type timespec struct {
	tv_sec  int64
	tv_nsec int64
}

//go:nosplit
func (ts *timespec) setNsec(ns int64) {
	ts.tv_sec = ns / 1e9
	ts.tv_nsec = ns % 1e9
}

type timeval struct {
	tv_sec  int64
	tv_usec int64
}

func (tv *timeval) set_usec(x int32) {
	tv.tv_usec = int64(x)
}

type itimerval struct {
	it_interval timeval

	ss_flags  int32
	pad_cgo_0 [4]byte
}

type timespec struct {
	tv_sec  int64
	tv_nsec int64
}

//go:nosplit
func (ts *timespec) setNsec(ns int64) {
	ts.tv_sec = ns / 1e9
	ts.tv_nsec = ns % 1e9
}

type timeval struct {
	tv_sec  int64
	tv_usec int64
}

func (tv *timeval) set_usec(x int32) {
	tv.tv_usec = int64(x)
}

type itimerval struct {
	it_interval timeval