for (int i = 0; i < LongMath.halfPowersOf10.length; i++) {
      assertEquals(
          BigIntegerMath.sqrt(BigInteger.TEN.pow(2 * i + 1), FLOOR),
          BigInteger.valueOf(LongMath.halfPowersOf10[i]));
    }
    BigInteger nextBigger =
        BigIntegerMath.sqrt(BigInteger.TEN.pow(2 * LongMath.halfPowersOf10.length + 1), FLOOR);
    assertTrue(nextBigger.compareTo(BigInteger.valueOf(Long.MAX_VALUE)) > 0);
  }

  // 18,304
  private static final long EXPECTED_TWO_BYTE_ROUNDTRIPPABLE_COUNT =
      // Both bytes are one byte characters
      (long) Math.pow(EXPECTED_ONE_BYTE_ROUNDTRIPPABLE_COUNT, 2)
          +
          // The possible number of two byte characters
          TWO_BYTE_ROUNDTRIPPABLE_CHARACTERS;

  // 2048

  // 18,304
  private static final long EXPECTED_TWO_BYTE_ROUNDTRIPPABLE_COUNT =
      // Both bytes are one byte characters
      (long) Math.pow(EXPECTED_ONE_BYTE_ROUNDTRIPPABLE_COUNT, 2)
          +
          // The possible number of two byte characters
          TWO_BYTE_ROUNDTRIPPABLE_CHARACTERS;

  // 2048

import assertk.assertions.isEqualTo
import assertk.assertions.isFalse
import assertk.assertions.isTrue
import java.io.IOException
import java.util.Arrays
import java.util.concurrent.atomic.AtomicInteger
import kotlin.math.pow
import kotlin.test.assertFailsWith
import okhttp3.TestUtil.headerEntries
import okhttp3.internal.EMPTY_BYTE_ARRAY
import okhttp3.internal.http2.Http2.FLAG_COMPRESSED
import okhttp3.internal.http2.Http2.FLAG_END_HEADERS

   * infinite {@code double} values are considered infinitely far away. For example, 2^2000 is not
   * representable as a double, but {@code roundToDouble(BigDecimal.valueOf(2).pow(2000), HALF_UP)}
   * will return {@code Double.MAX_VALUE}, not {@code Double.POSITIVE_INFINITY}.
   *
   * <p>For the case of {@link RoundingMode#HALF_EVEN}, this implementation uses the IEEE 754

   * {@code BigInteger.valueOf(b).pow(k).intValue()}. This implementation runs in {@code O(log k)}
   * time.
   *
   * <p>Compare {@link #checkedPow}, which throws an {@link ArithmeticException} upon overflow.
   *
   * @throws IllegalArgumentException if {@code k < 0}
   */
  @GwtIncompatible // failing tests
  public static int pow(int b, int k) {
    checkNonNegative("exponent", k);

  static final ImmutableList<RoundingMode> ALL_SAFE_ROUNDING_MODES =
      ImmutableList.of(DOWN, UP, FLOOR, CEILING, HALF_EVEN, HALF_UP, HALF_DOWN);

  // Exponents to test for the pow() function.
  static final ImmutableList<Integer> EXPONENTS =
      ImmutableList.of(0, 1, 2, 3, 4, 7, 10, 15, 20, 25, 40, 70);

  /* Helper function to make a Long value from an Integer. */

  static final ImmutableList<RoundingMode> ALL_SAFE_ROUNDING_MODES =
      ImmutableList.of(DOWN, UP, FLOOR, CEILING, HALF_EVEN, HALF_UP, HALF_DOWN);

  // Exponents to test for the pow() function.
  static final ImmutableList<Integer> EXPONENTS =
      ImmutableList.of(0, 1, 2, 3, 4, 7, 10, 15, 20, 25, 40, 70);

  /* Helper function to make a Long value from an Integer. */

util; public final synchronized class TypeFormat { private static final char[] DIGITS; private static final int[] INT_POW_10; private static final long[] LONG_POW_10; private static final double LOG_10; private static final float FLOAT_RELATIVE_ERROR; private static final double DOUBLE_RELATIVE_ERROR; private static String[] LEADING_ZEROS; private static final double[] DOUBLE_POW_10; private void TypeFormat(); public static int indexOf(CharSequence, CharSequence, int); public static boolean pars...

util; public final synchronized class TypeFormat { private static final char[] DIGITS; private static final int[] INT_POW_10; private static final long[] LONG_POW_10; private static final double LOG_10; private static final float FLOAT_RELATIVE_ERROR; private static final double DOUBLE_RELATIVE_ERROR; private static String[] LEADING_ZEROS; private static final double[] DOUBLE_POW_10; private void TypeFormat(); public static int indexOf(CharSequence, CharSequence, int); public static boolean pars...