SUBL	$(delta & 0xFFFFFFFF), AX
	SBBL $(delta >> 32), DX

	// nano/100 = DX:AX
	// split into two decimal halves by div 1e9.
	// (decimal point is two spots over from correct place,
	// but we avoid overflow in the high word.)
	MOVL	$1000000000, CX
	DIVL	CX
	MOVL	AX, DI
	MOVL	DX, SI

	// DI = nano/100/1e9 = nano/1e11 = sec/100, DX = SI = nano/100%1e9
	// split DX into seconds and nanoseconds by div 1e7 magic multiply.

	f()

	err = syscall.Getrusage(syscall.RUSAGE_SELF, &after)
	if err != nil {
		ok = false
	}

	if !ok {
		return 0, 0
	}

	user = time.Duration(after.Utime.Nano() - before.Utime.Nano())
	system = time.Duration(after.Stime.Nano() - before.Stime.Nano())
	return user, system

func (tv *Timeval) Unix() (sec int64, nsec int64) {
	return int64(tv.Sec), int64(tv.Usec) * 1000
}

// Nano returns the time stored in ts as nanoseconds.
func (ts *Timespec) Nano() int64 {
	return int64(ts.Sec)*1e9 + int64(ts.Nsec)
}

// Nano returns the time stored in tv as nanoseconds.
func (tv *Timeval) Nano() int64 {
	return int64(tv.Sec)*1e9 + int64(tv.Usec)*1000

			}
			print(" <<\n")
			s.first = false
		}

		end, _, nano, p := s.header()
		oldEnd := s.end
		s.end = end

		print("[")
		var tmpbuf [21]byte
		pnano := int64(nano) - runtimeInitTime
		if pnano < 0 {
			// Logged before runtimeInitTime was set.
			pnano = 0
		}
		pnanoBytes := itoaDiv(tmpbuf[:], uint64(pnano), 9)

	return string(buf)
}

func ResetDebugLog() {
	stw := stopTheWorld(stwForTestResetDebugLog)
	for l := allDloggers; l != nil; l = l.allLink {
		l.w.write = 0
		l.w.tick, l.w.nano = 0, 0
		l.w.r.begin, l.w.r.end = 0, 0
		l.w.r.tick, l.w.r.nano = 0, 0
	}
	startTheWorld(stw)

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

//go:build unix || (js && wasm) || wasip1

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--
	}

-- before/before.go --
package main

import (
	"encoding/json"
	"fmt"
	"os"
	"time"
)

func truncateLike(t, p time.Time) time.Time {
	nano := p.UnixNano()
	d := 1 * time.Nanosecond
	for nano%int64(d) == 0 && d < 1*time.Second {
		d *= 10
	}
	for nano%int64(d) == 0 && d < 2*time.Second {
		d *= 2
	}
	return t.Truncate(d)
}

func main() {
	var t1 time.Time
	b1, err := os.ReadFile(os.Args[1])

func (tv *Timeval) Unix() (sec int64, nsec int64) {
	return int64(tv.Sec), int64(tv.Usec) * 1000
}

// Nano returns the time stored in ts as nanoseconds.
func (ts *Timespec) Nano() int64 {
	return int64(ts.Sec)*1e9 + int64(ts.Nsec)
}

// Nano returns the time stored in tv as nanoseconds.
func (tv *Timeval) Nano() int64 {
	return int64(tv.Sec)*1e9 + int64(tv.Usec)*1000
}

// Getpagesize and Exit are provided by the runtime.

	for _, t := range times {
		if t.Equal(timeSentinel) || t.IsZero() {
			continue
		}
		nano := t.UnixNano()
		if group > 0 {
			for k := range timeOccurrenceMap {
				if k == nano {
					// We add to ourself later
					continue
				}
				diff := k - nano
				if diff < 0 {
					diff = -diff
				}
				// We are within the limit
				if diff < groupNano {
					timeOccurrenceMap[k]++

	return int64(ts.Sec), int64(ts.Nsec)
}

func (tv *Timeval) Unix() (sec int64, nsec int64) {
	return int64(tv.Sec), int64(tv.Usec) * 1000
}

func (ts *Timespec) Nano() int64 {
	return int64(ts.Sec)*1e9 + int64(ts.Nsec)
}

func (tv *Timeval) Nano() int64 {
	return int64(tv.Sec)*1e9 + int64(tv.Usec)*1000
}

// use is a no-op, but the compiler cannot see that it is.