// NsecToTimespec converts a number of nanoseconds into a [Timespec].
func NsecToTimespec(nsec int64) Timespec {
	sec := nsec / 1e9
	nsec = nsec % 1e9
	if nsec < 0 {
		nsec += 1e9
		sec--
	}
	return setTimespec(sec, nsec)
}

// TimevalToNsec returns the time stored in tv as nanoseconds.
func TimevalToNsec(tv Timeval) int64 { return tv.Nano() }

// NsecToTimeval converts a number of nanoseconds into a [Timeval].

	return 0, ENOSYS
}

type Iovec struct{} // dummy

type Timespec struct {
	Sec  int64
	Nsec int64
}

type Timeval struct {
	Sec  int64
	Usec int64
}

func setTimespec(sec, nsec int64) Timespec {
	return Timespec{Sec: sec, Nsec: nsec}
}

func setTimeval(sec, usec int64) Timeval {
	return Timeval{Sec: sec, Usec: usec}

	return timestamp(tv.Sec*1e9) + timestamp(tv.Usec*1e3)
}

func (tv *Timeval) setTimestamp(t timestamp) {
	tv.Sec = int64(t / 1e9)
	tv.Usec = int64((t % 1e9) / 1e3)
}

func setTimespec(sec, nsec int64) Timespec {
	return Timespec{Sec: sec, Nsec: nsec}
}

func setTimeval(sec, usec int64) Timeval {
	return Timeval{Sec: sec, Usec: usec}
}

type clockid = uint32

const (

//sysnb	Uname(buf *Utsname) (err error)
//sys	write(fd int, p []byte) (n int, err error)
//sys	writev(fd int, iovecs []Iovec) (n uintptr, err error)

//sys	gettimeofday(tv *Timeval, tzp *Timezone) (err error)

func setTimespec(sec, nsec int64) Timespec {
	return Timespec{Sec: sec, Nsec: nsec}
}

func setTimeval(sec, usec int64) Timeval {
	return Timeval{Sec: sec, Usec: int32(usec)}
}

	var tv Timeval
	err = Gettimeofday(&tv)
	if err != nil {
		return 0, err
	}
	if t != nil {
		*t = Time_t(tv.Sec)
	}
	return Time_t(tv.Sec), nil
}

func setTimespec(sec, nsec int64) Timespec {
	return Timespec{Sec: sec, Nsec: nsec}
}

func setTimeval(sec, usec int64) Timeval { //fix
	return Timeval{Sec: sec, Usec: usec}
}