0xe000 <= r && r <= 0xfffd ||
		0x10000 <= r && r <= 0x10ffff
}

// decodeCSS decodes CSS3 escapes given a sequence of stringchars.
// If there is no change, it returns the input, otherwise it returns a slice
// backed by a new array.
// https://www.w3.org/TR/css3-syntax/#SUBTOK-stringchar defines stringchar.
func decodeCSS(s []byte) []byte {
	i := bytes.IndexByte(s, '\\')
	if i == -1 {
		return s
	}

		sqi.prec *= 2
		sqi = ng(sqi)
	}
	// sqi = 1/√x

	// x/√x = √x
	z.Mul(x, sqi)
}

// newFloat returns a new *Float with space for twice the given
// precision.
func newFloat(prec2 uint32) *Float {
	z := new(Float)
	// nat.make ensures the slice length is > 0
	z.mant = z.mant.make(int(prec2/_W) * 2)
	return z

			return 0, false
		}

		if uintptr(av) == h.curArena.end {
			// The new space is contiguous with the old
			// space, so just extend the current space.
			h.curArena.end = uintptr(av) + asize
		} else {
			// The new space is discontiguous. Track what
			// remains of the current space and switch to
			// the new space. This should be rare.
			if size := h.curArena.end - h.curArena.base; size != 0 {

		{"space vs newline 0010", "1\n2", "%d \n%d", 2, true},
		{"space vs newline 0011", "1\n2", "%d \n %d", 2, true},
		{"space vs newline 0100", "1\n 2", "%d\n%d", 2, true},
		{"space vs newline 0101", "1\n 2", "%d\n%d ", 2, true},
		{"space vs newline 0110", "1\n 2", "%d \n%d", 2, true},
		{"space vs newline 0111", "1\n 2", "%d \n %d", 2, true},
		{"space vs newline 1000", "1 \n2", "%d\n%d", 2, true},

		return
	}
	cgoCheckTypedBlock(typ, src, off, size)
}

// cgoCheckSliceCopy is called when copying n elements of a slice.
// src and dst are pointers to the first element of the slice.
// typ is the element type of the slice.
// It throws if the program is copying slice elements that contain unpinned Go
// pointers into non-Go memory.
//
//go:nosplit
//go:nowritebarrier

}

// parsePAXRecord parses the input PAX record string into a key-value pair.
// If parsing is successful, it will slice off the currently read record and
// return the remainder as r.
func parsePAXRecord(s string) (k, v, r string, err error) {
	// The size field ends at the first space.
	nStr, rest, ok := strings.Cut(s, " ")
	if !ok {
		return "", "", s, ErrHeader
	}

	// HeapSys is bytes of heap memory obtained from the OS.
	//
	// HeapSys measures the amount of virtual address space
	// reserved for the heap. This includes virtual address space
	// that has been reserved but not yet used, which consumes no
	// physical memory, but tends to be small, as well as virtual
	// address space for which the physical memory has been
	// returned to the OS after it became unused (see HeapReleased

	p := newPrinter()
	p.doPrintf(format, a)
	s := string(p.buf)
	p.free()
	return s
}

// Appendf formats according to a format specifier, appends the result to the byte
// slice, and returns the updated slice.
func Appendf(b []byte, format string, a ...any) []byte {
	p := newPrinter()
	p.doPrintf(format, a)
	b = append(b, p.buf...)
	p.free()
	return b
}

	return predicate{
		func(r rune) bool {
			return !p.f(r)
		},
		"not " + p.name,
	}
}

var trimFuncTests = []TrimFuncTest{
	{isSpace, space + " hello " + space,
		[]byte("hello"),
		[]byte("hello " + space),
		[]byte(space + " hello")},
	{isDigit, "\u0e50\u0e5212hello34\u0e50\u0e51",
		[]byte("hello"),
		[]byte("hello34\u0e50\u0e51"),
		[]byte("\u0e50\u0e5212hello")},

func (x StringSlice) Sort() { Sort(x) }

// Convenience wrappers for common cases

// Ints sorts a slice of ints in increasing order.
//
// Note: as of Go 1.22, this function simply calls [slices.Sort].
func Ints(x []int) { intsImpl(x) }

// Float64s sorts a slice of float64s in increasing order.
// Not-a-number (NaN) values are ordered before other values.
//