File: timestruct.go

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// Copyright 2016 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

//go:build aix || darwin || dragonfly || freebsd || hurd || (js && wasm) || linux || netbsd || openbsd || solaris

package syscall

// TimespecToNSec returns the time stored in ts as nanoseconds.
func TimespecToNsec(ts Timespec) int64 { return ts.Nano() }

// 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.
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)
}