EtherGuard-VPN/tai64n/tai64n.go
Jason A. Donenfeld a040786645 global: Add SPDX tags and copyright header
Mathias should probably add his copyright headers to each file too.
2018-05-03 15:06:25 +02:00

32 lines
626 B
Go

/* SPDX-License-Identifier: GPL-2.0
*
* Copyright (C) 2017-2018 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
*/
package tai64n
import (
"bytes"
"encoding/binary"
"time"
)
const TimestampSize = 12
const base = uint64(4611686018427387914)
type Timestamp [TimestampSize]byte
func Now() Timestamp {
var tai64n Timestamp
now := time.Now()
secs := base + uint64(now.Unix())
nano := uint32(now.UnixNano())
binary.BigEndian.PutUint64(tai64n[:], secs)
binary.BigEndian.PutUint32(tai64n[8:], nano)
return tai64n
}
func (t1 Timestamp) After(t2 Timestamp) bool {
return bytes.Compare(t1[:], t2[:]) > 0
}