}
	if cmode != coverage.CtrModeAtomic {
		return fmt.Errorf("ClearCounters invoked for program built with -covermode=%s (please use -covermode=atomic)", cmode.String())
	}

	// Implementation note: this function would be faster and simpler
	// if we could just zero out the entire counter array, but for the
	// moment we go through and zero out just the slots in the array

starts with a blunt critique of Knuth's presentation (among others) and then
presents a more detailed and easier to follow treatment of long division,
including an implementation in Pascal. But the algorithm and implementation
work entirely in terms of 3-by-2 division, which is much less useful on modern
hardware than an algorithm using 2-by-1 division. The proofs are a bit too

// stdout.

// vetTool specifies the vet command to run.
// Any tool that supports the (still unpublished) vet
// command-line protocol may be supplied; see
// golang.org/x/tools/go/analysis/unitchecker for one
// implementation. It is also used by tests.
//
// The default behavior (vetTool=="") runs 'go tool vet'.
var vetTool string // -vettool

func init() {
	work.AddBuildFlags(CmdVet, work.DefaultBuildFlags)

// The original is dual licensed under GPL and Apache 2.  As the copyright holder
// for the work, IBM has contributed this new work under the golang license.

// This code was written in Go based on the original C implementation.

// This is a tool needed to generate the appropriate constants needed for
// the vpmsum algorithm.  It is included to generate new constant tables if
// new polynomial values are included in the future.

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

package errors_test

import (
	"errors"
	"fmt"
	"io/fs"
	"os"
	"time"
)

// MyError is an error implementation that includes a time and message.
type MyError struct {
	When time.Time
	What string
}

func (e MyError) Error() string {
	return fmt.Sprintf("%v: %v", e.When, e.What)
}

func oops() error {

// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

#include "textflag.h"

// See memclrNoHeapPointers Go doc for important implementation constraints.

// void runtime·memclrNoHeapPointers(void*, uintptr)
TEXT runtime·memclrNoHeapPointers<ABIInternal>(SB),NOSPLIT,$0-16
	// X10 = ptr
	// X11 = n

	// If less than 8 bytes, do single byte zeroing.

//go:build aix || darwin || netbsd || openbsd || plan9 || solaris || windows

package runtime

import (
	"internal/runtime/atomic"
	"unsafe"
)

// This implementation depends on OS-specific implementations of
//
//	func semacreate(mp *m)
//		Create a semaphore for mp, if it does not already have one.
//
//	func semasleep(ns int64) int32
//		If ns < 0, acquire m's semaphore and return 0.

package concurrent

import (
	"internal/abi"
	"internal/goarch"
	"math/rand/v2"
	"sync"
	"sync/atomic"
	"unsafe"
)

// HashTrieMap is an implementation of a concurrent hash-trie. The implementation
// is designed around frequent loads, but offers decent performance for stores
// and deletes as well, especially if the map is larger. It's primary use-case is

func (t *Term) Type() Type     { return t.typ }
func (t *Term) String() string { return (*term)(t).String() }

// ----------------------------------------------------------------------------
// Implementation

// Avoid excessive type-checking times due to quadratic termlist operations.
const maxTermCount = 100

// parseUnion parses uexpr as a union of expressions.

	// so this is always false, but the field is present because
	// shared code in fd_mutex.go checks it.
	isFile bool
}

// We need this to close out a file descriptor when it is unlocked,
// but the real implementation has to live in the net package because
// it uses os.File's.
func (fd *FD) destroy() error {
	if fd.Destroy != nil {
		fd.Destroy()
	}
	return nil
}