func NsecToTimeval(nsec int64) Timeval {
	nsec += 999 // round up to microsecond
	usec := nsec % 1e9 / 1e3
	sec := nsec / 1e9
	if usec < 0 {
		usec += 1e6
		sec--
	}
	return setTimeval(sec, usec)
}

// Unix returns the time stored in ts as seconds plus nanoseconds.
func (ts *Timespec) Unix() (sec int64, nsec int64) {
	return int64(ts.Sec), int64(ts.Nsec)
}

func NsecToTimeval(nsec int64) Timeval {
	nsec += 999 // round up to microsecond
	usec := nsec % 1e9 / 1e3
	sec := nsec / 1e9
	if usec < 0 {
		usec += 1e6
		sec--
	}
	return setTimeval(sec, usec)

// license that can be found in the LICENSE file.

//go:build amd64 && netbsd

package unix

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)}
}

func SetKevent(k *Kevent_t, fd, mode, flags int) {
	k.Ident = uint64(fd)
	k.Filter = uint32(mode)
	k.Flags = uint32(flags)
}

// license that can be found in the LICENSE file.

//go:build arm && netbsd

package unix

func setTimespec(sec, nsec int64) Timespec {
	return Timespec{Sec: sec, Nsec: int32(nsec)}
}

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

func SetKevent(k *Kevent_t, fd, mode, flags int) {
	k.Ident = uint32(fd)
	k.Filter = uint32(mode)
	k.Flags = uint32(flags)
}

// license that can be found in the LICENSE file.

//go:build arm64 && netbsd

package unix

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)}
}

func SetKevent(k *Kevent_t, fd, mode, flags int) {
	k.Ident = uint64(fd)
	k.Filter = uint32(mode)
	k.Flags = uint32(flags)
}

// license that can be found in the LICENSE file.

//go:build 386 && openbsd

package unix

func setTimespec(sec, nsec int64) Timespec {
	return Timespec{Sec: sec, Nsec: int32(nsec)}
}

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

func SetKevent(k *Kevent_t, fd, mode, flags int) {
	k.Ident = uint32(fd)
	k.Filter = int16(mode)
	k.Flags = uint16(flags)
}

//sys	mmap(addr uintptr, length uintptr, prot int, flags int, fd int, offset int64) (xaddr uintptr, err error) = mmap64

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

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

func (iov *Iovec) SetLen(length int) {
	iov.Len = uint64(length)
}

func (msghdr *Msghdr) SetControllen(length int) {

		offsetMin = int16(offset)
	}

	sec := t.sec()
	nsec := t.nsec()
	enc := []byte{
		version,         // byte 0 : version
		byte(sec >> 56), // bytes 1-8: seconds
		byte(sec >> 48),
		byte(sec >> 40),
		byte(sec >> 32),
		byte(sec >> 24),
		byte(sec >> 16),
		byte(sec >> 8),
		byte(sec),
		byte(nsec >> 24), // bytes 9-12: nanoseconds
		byte(nsec >> 16),
		byte(nsec >> 8),
		byte(nsec),

//go:build riscv64 && freebsd

package unix

import (
	"syscall"
	"unsafe"
)

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

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

func SetKevent(k *Kevent_t, fd, mode, flags int) {
	k.Ident = uint64(fd)
	k.Filter = int16(mode)
	k.Flags = uint16(flags)
}

// license that can be found in the LICENSE file.

//go:build amd64 && darwin

package unix

import "syscall"

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)}
}

func SetKevent(k *Kevent_t, fd, mode, flags int) {
	k.Ident = uint64(fd)
	k.Filter = int16(mode)
	k.Flags = uint16(flags)
}