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Source file src/syscall/timestruct.go

Documentation: syscall

  // 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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