)

// levelBits is the number of bits in the radix for a given level in the super summary
// structure.
//
// The sum of all the entries of levelBits should equal heapAddrBits.
var levelBits = [summaryLevels]uint{
	summaryL0Bits,
	summaryLevelBits,
	summaryLevelBits,
	summaryLevelBits,
	summaryLevelBits,
}

// levelShift is the number of bits to shift to acquire the radix for a given level
// in the super summary structure.

	// special-case 0
	if len(z.mant) == 0 {
		z.prec = prec
		z.acc = Exact
		z.form = zero
		f = z
		return
	}
	// len(z.mant) > 0

	// The mantissa may have a radix point (fcount <= 0) and there
	// may be a nonzero exponent exp. The radix point amounts to a
	// division by b**(-fcount). An exponent means multiplication by
	// ebase**exp. Finally, mantissa normalization (shift left) requires

   * @param string the string representation of an integer value
   * @param radix the radix to use when parsing
   * @return the integer value represented by {@code string} using {@code radix}, or {@code null} if
   *     {@code string} has a length of zero or cannot be parsed as an integer value
   * @throws IllegalArgumentException if {@code radix < Character.MIN_RADIX} or {@code radix >
   *     Character.MAX_RADIX}

// similar to mheap.arenas, since the bitmap may be large on some systems.
//
// The bitmap is efficiently searched by using a radix tree in combination
// with fast bit-wise intrinsics. Allocation is performed using an address-ordered
// first-fit approach.
//
// Each entry in the radix tree is a summary that describes three properties of
// a particular region of the address space: the number of contiguous free pages

	}

	// special-case 0 (see also issue #16176)
	if len(z.a.abs) == 0 {
		return z.norm(), true
	}
	// len(z.a.abs) > 0

	// The mantissa may have a radix point (fcount <= 0) and there
	// may be a nonzero exponent exp. The radix point amounts to a
	// division by base**(-fcount), which equals a multiplication by
	// base**fcount. An exponent means multiplication by ebase**exp.

   * @param string the string representation of an integer value
   * @param radix the radix to use when parsing
   * @return the integer value represented by {@code string} using {@code radix}, or {@code null} if
   *     {@code string} has a length of zero or cannot be parsed as an integer value
   * @throws IllegalArgumentException if {@code radix < Character.MIN_RADIX} or {@code radix >
   *     Character.MAX_RADIX}

		{token.INT, "0b01a0", "0b01 a0", ""}, // only accept 0-9

		{token.FLOAT, "0b.", "0b.", "invalid radix point in binary literal"},
		{token.FLOAT, "0b.1", "0b.1", "invalid radix point in binary literal"},
		{token.FLOAT, "0b1.0", "0b1.0", "invalid radix point in binary literal"},
		{token.FLOAT, "0b1e10", "0b1e10", "'e' exponent requires decimal mantissa"},

	// remove any references from the deleted node
	// to avoid memory leak
	child.child[0] = nil
	child.child[1] = nil
}

// Tree is a radix tree for IPv4 and IPv6 networks.
type Tree[T any] struct {
	rootV4 *node[T]
	rootV6 *node[T]
}

// New creates a new Radix Tree for IP addresses.
func New[T any]() *Tree[T] {
	return &Tree[T]{
		rootV4: &node[T]{
			prefix: netip.PrefixFrom(netip.IPv4Unspecified(), 0),

		return
	}
	if s[0] != '0' {
		return
	}
	radix := s[1]
	if radix == 'b' || radix == 'B' {
		check.versionErrorf(lit, go1_13, "binary literal")
		return
	}
	if radix == 'o' || radix == 'O' {
		check.versionErrorf(lit, go1_13, "0o/0O-style octal literal")
		return
	}
	if lit.Kind != token.INT && (radix == 'x' || radix == 'X') {

		return
	}
	if s[0] != '0' {
		return
	}
	radix := s[1]
	if radix == 'b' || radix == 'B' {
		check.versionErrorf(lit, go1_13, "binary literal")
		return
	}
	if radix == 'o' || radix == 'O' {
		check.versionErrorf(lit, go1_13, "0o/0O-style octal literal")
		return
	}
	if lit.Kind != syntax.IntLit && (radix == 'x' || radix == 'X') {