for (long b : TEST_LONGS) {
        UnsignedLong aUnsigned = UnsignedLong.fromLongBits(a);
        UnsignedLong bUnsigned = UnsignedLong.fromLongBits(b);
        long expected =
            aUnsigned.bigIntegerValue().subtract(bUnsigned.bigIntegerValue()).longValue();
        UnsignedLong unsignedSub = aUnsigned.minus(bUnsigned);
        assertThat(unsignedSub.longValue()).isEqualTo(expected);
      }
    }
  }

            // in DST
            if ( cfg.getLocalTimezone().inDaylightTime(new Date(t)) ) {
                // t also in DST so no correction
            }
            else {
                // t not in DST so subtract 1 hour
                t -= 3600000;
            }
        }
        else {
            // not in DST
            if ( cfg.getLocalTimezone().inDaylightTime(new Date(t)) ) {

      for (long b : TEST_LONGS) {
        UnsignedLong aUnsigned = UnsignedLong.fromLongBits(a);
        UnsignedLong bUnsigned = UnsignedLong.fromLongBits(b);
        long expected =
            aUnsigned.bigIntegerValue().subtract(bUnsigned.bigIntegerValue()).longValue();
        UnsignedLong unsignedSub = aUnsigned.minus(bUnsigned);
        assertThat(unsignedSub.longValue()).isEqualTo(expected);
      }
    }
  }

  }

  @AndroidIncompatible // slow
  public void testCheckedSubtract() {
    for (int a : ALL_INTEGER_CANDIDATES) {
      for (int b : ALL_INTEGER_CANDIDATES) {
        BigInteger expectedResult = valueOf(a).subtract(valueOf(b));
        boolean expectedSuccess = fitsInInt(expectedResult);
        try {
          assertEquals(a - b, IntMath.checkedSubtract(a, b));
          assertTrue(expectedSuccess);

    new RoundToDoubleTester(minDoubleAsBD).setExpectation(-Double.MAX_VALUE, values()).test();
  }

  public void testRoundToDouble_minDoubleMinusOne() {
    BigDecimal minDoubleAsBD = new BigDecimal(-Double.MAX_VALUE).subtract(BigDecimal.ONE);
    new RoundToDoubleTester(minDoubleAsBD)
        .setExpectation(-Double.MAX_VALUE, DOWN, CEILING, HALF_EVEN, HALF_UP, HALF_DOWN)
        .setExpectation(Double.NEGATIVE_INFINITY, UP, FLOOR)

    new RoundToDoubleTester(minDoubleAsBD).setExpectation(-Double.MAX_VALUE, values()).test();
  }

  public void testRoundToDouble_minDoubleMinusOne() {
    BigDecimal minDoubleAsBD = new BigDecimal(-Double.MAX_VALUE).subtract(BigDecimal.ONE);
    new RoundToDoubleTester(minDoubleAsBD)
        .setExpectation(-Double.MAX_VALUE, DOWN, CEILING, HALF_EVEN, HALF_UP, HALF_DOWN)
        .setExpectation(Double.NEGATIVE_INFINITY, UP, FLOOR)

    requireLinks()[i] = value;
  }

  /*
   * We don't define getPredecessor+getSuccessor and setPredecessor+setSuccessor here because
   * they're defined above -- including logic to add and subtract 1 to map between the values stored
   * in the predecessor/successor arrays and the indexes in the elements array that they identify.
   */

        while (ki > 1 && key.charAt(ki - 1) == '\\') {
            ki--;
        }
        if (ki < key.length()) {
            key = key.substring(0, ki);
        }

        /* Subtract the server and share from the pathConsumed so that
         * it refects the part of the relative path consumed and not
         * the entire path.
         */

  }

  @AndroidIncompatible // slow
  public void testCheckedSubtract() {
    for (int a : ALL_INTEGER_CANDIDATES) {
      for (int b : ALL_INTEGER_CANDIDATES) {
        BigInteger expectedResult = valueOf(a).subtract(valueOf(b));
        boolean expectedSuccess = fitsInInt(expectedResult);
        try {
          assertEquals(a - b, IntMath.checkedSubtract(a, b));
          assertTrue(expectedSuccess);

    assertThat(UnsignedLongs.parseUnsignedLong("1234567890abcdef", 16))
        .isEqualTo(0x1234567890abcdefL);
  }

  public void testParseLongWithRadixLimits() {
    BigInteger max = BigInteger.ZERO.setBit(64).subtract(ONE);
    // loops through all legal radix values.
    for (int radix = Character.MIN_RADIX; radix <= Character.MAX_RADIX; radix++) {
      // tests can successfully parse a number string with this radix.