// 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. */

  /**
   * 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"
		}

		return false
	}

	return x.abs.probablyPrimeMillerRabin(n+1, true) && x.abs.probablyPrimeLucas()
}

// probablyPrimeMillerRabin reports whether n passes reps rounds of the
// Miller-Rabin primality test, using pseudo-randomly chosen bases.
// If force2 is true, one of the rounds is forced to use base 2.
// See Handbook of Applied Cryptography, p. 139, Algorithm 4.24.
// The number n is known to be non-zero.

// 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"

// QR is the ChaCha quarter-round on A, B, C, and D.
// V30 is used as a temporary, and V31 is assumed to
// hold the index table for rotate left 8.
#define QR(A, B, C, D) \
	VADD A.S4, B.S4, A.S4; VEOR D.B16, A.B16, D.B16;   VREV32 D.H8, D.H8; \

		a, b = b, a
	}
	fmt.Println(a) // 100-digit Fibonacci number

	// Test a for primality.
	// (ProbablyPrimes' argument sets the number of Miller-Rabin
	// rounds to be performed. 20 is a good value.)
	fmt.Println(a.ProbablyPrime(20))

	// Output:
	// 1344719667586153181419716641724567886890850696275767987106294472017884974410332069524504824747437757
	// false
}

	// leaves enough wiggle room to include n lg n time
	// (it actually tests for O(n^log_2(3)).
	// To prevent false positives, average away variation
	// by doing multiple rounds within a single run.
	checkLinear("iterdelete", 2500, func(n int) {
		for round := 0; round < 4; round++ {
			m := map[int]int{}
			for i := 0; i < n; i++ {
				m[i] = i
			}
			for i := 0; i < n; i++ {
				for k := range m {
					delete(m, k)

				labelName: labelValue,
			})
			return currentObject, nil
		}
	}

	errs := make(chan error, 1)
	rounds := 100
	go func() {
		// continuously submits a patch that updates a label and verifies the label update was effective
		labelName := "timestamp"
		for i := 0; i < rounds; i++ {
			expectedLabelValue := fmt.Sprint(i)
			update, err := fetchObject(name)
			if err != nil {
				errs <- err