queue: TaskQueue,
  message: String,
) {
  fine("${queue.name} ${String.format("%-22s", message)}: ${task.name}")
}

/**
 * Returns a duration in the nearest whole-number units like "999 µs" or "  1 s ". This rounds 0.5
 * units away from 0 and 0.499 towards 0. The smallest unit this returns is "µs"; the largest unit
 * it returns is "s". For values in [-499..499] this returns "  0 µs".
 *

// implementation outline, the notation now() is used to mean reading
// the virtual clock. In the original paper’s terms, "R(t)" is the
// number of "rounds" that have been completed at real time t ---
// where a round consists of virtually transmitting one bit from every
// non-empty queue in the router (regardless of which queue holds the
// packet that is really being transmitted at the moment); in this

// Copyright 2023 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.

#include "textflag.h"

// ChaCha8 is ChaCha with 8 rounds.
// See https://cr.yp.to/chacha/chacha-20080128.pdf.
// See chacha8_generic.go for additional details.

// ROL rotates the uint32s in register R left by N bits, using temporary T.
#define ROL(N, R, T) \

	if len(base) != len(snapshot) {
		panic(fmt.Sprintf("the number of coverage bits changed: before=%d, after=%d", len(base), len(snapshot)))
	}
	found := false
	for i := range snapshot {
		if snapshot[i]&^base[i] != 0 {
			found = true
			break
		}
	}
	if !found {
		return nil
	}
	diff := make([]byte, len(snapshot))
	for i := range diff {
		diff[i] = snapshot[i] &^ base[i]
	}
	return diff
}

			T.AddMethod(m)
		}

		// check method order
		if i == 0 {
			// first round: collect methods in given order
			methods = make([]string, T.NumMethods())
			for j := range methods {
				methods[j] = T.Method(j).Name()
			}
		} else {
			// successive rounds: methods must appear in the same order
			if got := T.NumMethods(); got != len(methods) {

			T.AddMethod(m)
		}

		// check method order
		if i == 0 {
			// first round: collect methods in given order
			methods = make([]string, T.NumMethods())
			for j := range methods {
				methods[j] = T.Method(j).Name()
			}
		} else {
			// successive rounds: methods must appear in the same order
			if got := T.NumMethods(); got != len(methods) {

	// FloatString rounds halves away from 0, and our result should always be positive,
	// so it should work as we expect. (There's no direct way to round a Rat.)
	rounded, err := strconv.ParseInt(precise.FloatString(0), 10, 64)
	if err != nil {
		panic(err)
	}

	// If we rounded up, `rounded` may be equal to 2ᵈ, so we perform a final reduction.
	return uint16(rounded % (1 << d))
}

	// in the keccak reference code.
	var t, bc0, bc1, bc2, bc3, bc4, d0, d1, d2, d3, d4 uint64

	for i := 0; i < 24; i += 4 {
		// Combines the 5 steps in each round into 2 steps.
		// Unrolls 4 rounds per loop and spreads some steps across rounds.

		// Round 1
		bc0 = a[0] ^ a[5] ^ a[10] ^ a[15] ^ a[20]
		bc1 = a[1] ^ a[6] ^ a[11] ^ a[16] ^ a[21]
		bc2 = a[2] ^ a[7] ^ a[12] ^ a[17] ^ a[22]

  /**
   * Returns x rounded to either the greatest double less than or equal to the precise value of x,
   * or the least double greater than or equal to the precise value of x.
   */
  abstract double roundToDoubleArbitrarily(X x);

  /** Returns the sign of x: either -1, 0, or 1. */
  abstract int sign(X x);

  /** Returns d's value as an X, rounded with the specified mode. */

	if err != nil {
		fatalf("listing stdlib export files: %v", err)
	}

	// two rounds: once using normal objects, again using .a files (compile -pack).
	for round := 0; round < 2; round++ {
		pkg := "-pack=" + fmt.Sprint(round)

		// The compiler expects the files being read to have the right suffix.
		o := "o"
		if round == 1 {
			o = "a"
		}