n := 0
	wasSpace := 1
	// setBits is used to track which bits are set in the bytes of s.
	setBits := uint8(0)
	for i := 0; i < len(s); i++ {
		r := s[i]
		setBits |= r
		isSpace := int(asciiSpace[r])
		n += wasSpace & ^isSpace
		wasSpace = isSpace
	}

	if setBits >= utf8.RuneSelf {
		// Some runes in the input slice are not ASCII.

  public BigInteger bigIntegerValue() {
    BigInteger bigInt = BigInteger.valueOf(value & UNSIGNED_MASK);
    if (value < 0) {
      bigInt = bigInt.setBit(Long.SIZE - 1);
    }
    return bigInt;
  }

  @Override
  public int compareTo(UnsignedLong o) {
    checkNotNull(o);
    return UnsignedLongs.compare(value, o.value);
  }

  @Override

  public BigInteger bigIntegerValue() {
    BigInteger bigInt = BigInteger.valueOf(value & UNSIGNED_MASK);
    if (value < 0) {
      bigInt = bigInt.setBit(Long.SIZE - 1);
    }
    return bigInt;
  }

  @Override
  public int compareTo(UnsignedLong o) {
    checkNotNull(o);
    return UnsignedLongs.compare(value, o.value);
  }

  @Override

    doTestSetBits(inRange('A', 'Z').and(inRange('F', 'K').negate()));
  }

  @GwtIncompatible // java.util.BitSet
  private void doTestSetBits(CharMatcher matcher) {
    BitSet bitset = new BitSet();
    matcher.setBits(bitset);
    for (int i = Character.MIN_VALUE; i <= Character.MAX_VALUE; i++) {
      assertEquals(matcher.matches((char) i), bitset.get(i));
    }
  }

  public void testEmpty() throws Exception {

  }

  @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);
  }

  @GwtIncompatible // pow()
  public void testConstantsPowersOf10() {

    }

    @Override
    public Iterator<Set<E>> iterator() {
      return new AbstractIndexedListIterator<Set<E>>(size()) {
        @Override
        protected Set<E> get(final int setBits) {
          return new SubSet<>(inputSet, setBits);
        }
      };
    }

    @Override
    public boolean contains(@CheckForNull Object obj) {
      if (obj instanceof Set) {
        Set<?> set = (Set<?>) obj;

  }

  @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);
  }

  @GwtIncompatible // pow()
  public void testConstantsPowersOf10() {

    doTestSetBits(inRange('A', 'Z').and(inRange('F', 'K').negate()));
  }

  @GwtIncompatible // java.util.BitSet
  private void doTestSetBits(CharMatcher matcher) {
    BitSet bitset = new BitSet();
    matcher.setBits(bitset);
    for (int i = Character.MIN_VALUE; i <= Character.MAX_VALUE; i++) {
      assertEquals(matcher.matches((char) i), bitset.get(i));
    }
  }

  public void testEmpty() throws Exception {

  }

  @GwtIncompatible // TODO
  public void testConstantMaxPowerOfSqrt2Unsigned() {
    assertEquals(
        /*expected=*/ BigIntegerMath.sqrt(BigInteger.ZERO.setBit(2 * Long.SIZE - 1), FLOOR)
            .longValue(),
        /*actual=*/ LongMath.MAX_POWER_OF_SQRT2_UNSIGNED);
  }

  @GwtIncompatible // BigIntegerMath // TODO(cpovirk): GWT-enable BigIntegerMath

pkg syscall (freebsd-386-cgo), type SysProcAttr struct, Noctty bool
pkg syscall (freebsd-386-cgo), type SysProcAttr struct, Ptrace bool
pkg syscall (freebsd-386-cgo), type SysProcAttr struct, Setctty bool
pkg syscall (freebsd-386-cgo), type SysProcAttr struct, Setpgid bool
pkg syscall (freebsd-386-cgo), type SysProcAttr struct, Setsid bool
pkg syscall (freebsd-386-cgo), type Timespec struct, Nsec int32