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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.
// +build darwin dragonfly freebsd linux nacl netbsd openbsd solaris
package syscall
// TimespecToNsec converts a Timespec value into a number of
// nanoseconds since the Unix epoch.
func TimespecToNsec(ts Timespec) int64 { return int64(ts.Sec)*1e9 + int64(ts.Nsec) }
// NsecToTimespec takes a number of nanoseconds since the Unix epoch
// and returns the corresponding Timespec value.
func NsecToTimespec(nsec int64) Timespec {
sec := nsec / 1e9
nsec = nsec % 1e9
if nsec < 0 {
nsec += 1e9
sec--
}
return setTimespec(sec, nsec)
}
// TimevalToNsec converts a Timeval value into a number of nanoseconds
// since the Unix epoch.
func TimevalToNsec(tv Timeval) int64 { return int64(tv.Sec)*1e9 + int64(tv.Usec)*1e3 }
// NsecToTimeval takes a number of nanoseconds since the Unix epoch
// and returns the corresponding Timeval value.
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)
}
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