assertThrows(IllegalArgumentException.class, () -> IntMath.floorPowerOfTwo(0));
  }

  @GwtIncompatible // BigIntegerMath // TODO(cpovirk): GWT-enable BigIntegerMath
  public void testConstantMaxPowerOfSqrt2Unsigned() {
    assertEquals(
        /* expected= */ BigIntegerMath.sqrt(BigInteger.ZERO.setBit(2 * Integer.SIZE - 1), FLOOR)
            .intValue(),
        /* actual= */ IntMath.MAX_POWER_OF_SQRT2_UNSIGNED);