pkg encoding/base32, method (*Encoding) AppendDecode([]uint8, []uint8) ([]uint8, error) #53693
pkg encoding/base32, method (*Encoding) AppendEncode([]uint8, []uint8) []uint8 #53693
pkg encoding/base64, method (*Encoding) AppendDecode([]uint8, []uint8) ([]uint8, error) #53693
pkg encoding/base64, method (*Encoding) AppendEncode([]uint8, []uint8) []uint8 #53693
pkg encoding/hex, func AppendDecode([]uint8, []uint8) ([]uint8, error) #53693

//go:noescape
func LoadAcq64(ptr *uint64) uint64

//go:noescape
func LoadAcquintptr(ptr *uintptr) uintptr

//go:noescape
func And8(ptr *uint8, val uint8)

//go:noescape
func Or8(ptr *uint8, val uint8)

// NOTE: Do not add atomicxor8 (XOR is not idempotent).

//go:noescape
func And(ptr *uint32, val uint32)

//go:noescape
func Or(ptr *uint32, val uint32)

//go:noescape

//go:noescape
func LoadAcq64(ptr *uint64) uint64

//go:noescape
func LoadAcquintptr(ptr *uintptr) uintptr

//go:noescape
func Or8(ptr *uint8, val uint8)

//go:noescape
func And8(ptr *uint8, val uint8)

//go:noescape
func And(ptr *uint32, val uint32)

//go:noescape
func Or(ptr *uint32, val uint32)

//go:noescape
func And32(ptr *uint32, val uint32) uint32

//go:noescape

type Properties struct {
	pos   uint8  // start position in reorderBuffer; used in composition.go
	size  uint8  // length of UTF-8 encoding of this rune
	ccc   uint8  // leading canonical combining class (ccc if not decomposition)
	tccc  uint8  // trailing canonical combining class (ccc if not decomposition)
	nLead uint8  // number of leading non-starters.
	flags qcInfo // quick check flags
	index uint16

//go:noescape
func LoadAcq64(ptr *uint64) uint64

//go:noescape
func LoadAcquintptr(ptr *uintptr) uintptr

//go:noescape
func And8(ptr *uint8, val uint8)

//go:noescape
func Or8(ptr *uint8, val uint8)

// NOTE: Do not add atomicxor8 (XOR is not idempotent).

//go:noescape
func And(ptr *uint32, val uint32)

//go:noescape
func Or(ptr *uint32, val uint32)

//go:noescape

	*ptr = val
}

//go:nosplit
//go:noinline
func StoreReluintptr(ptr *uintptr, val uintptr) {
	*ptr = val
}

//go:noescape
func And8(ptr *uint8, val uint8)

//go:noescape
func Or8(ptr *uint8, val uint8)

// NOTE: Do not add atomicxor8 (XOR is not idempotent).

//go:noescape
func And(ptr *uint32, val uint32)

//go:noescape
func Or(ptr *uint32, val uint32)

//go:noescape

//go:noescape
func Load8(ptr *uint8) uint8

// NO go:noescape annotation; *ptr escapes if result escapes (#31525)
func Loadp(ptr unsafe.Pointer) unsafe.Pointer

//go:noescape
func LoadAcq(ptr *uint32) uint32

//go:noescape
func LoadAcquintptr(ptr *uintptr) uintptr

//go:noescape
func And8(ptr *uint8, val uint8)

//go:noescape
func Or8(ptr *uint8, val uint8)

//go:noescape

}

func TestAnd8(t *testing.T) {
	// Basic sanity check.
	x := uint8(0xff)
	for i := uint8(0); i < 8; i++ {
		atomic.And8(&x, ^(1 << i))
		if r := uint8(0xff) << (i + 1); x != r {
			t.Fatalf("clearing bit %#x: want %#x, got %#x", uint8(1<<i), r, x)
		}
	}

	// Set every bit in array to 1.
	a := make([]uint8, 1<<12)
	for i := range a {
		a[i] = 0xff
	}

	}
	i, j := c.i, c.j
	_ = dst[len(src)-1]
	dst = dst[:len(src)] // eliminate bounds check from loop
	for k, v := range src {
		i += 1
		x := c.s[i]
		j += uint8(x)
		y := c.s[j]
		c.s[i], c.s[j] = y, x
		dst[k] = v ^ uint8(c.s[uint8(x+y)])
	}
	c.i, c.j = i, j

	if a == 0xffff {
		return NRGBA{uint8(r >> 8), uint8(g >> 8), uint8(b >> 8), 0xff}
	}
	if a == 0 {
		return NRGBA{0, 0, 0, 0}
	}
	// Since Color.RGBA returns an alpha-premultiplied color, we should have r <= a && g <= a && b <= a.
	r = (r * 0xffff) / a
	g = (g * 0xffff) / a
	b = (b * 0xffff) / a
	return NRGBA{uint8(r >> 8), uint8(g >> 8), uint8(b >> 8), uint8(a >> 8)}
}

func nrgba64Model(c Color) Color {