return rune(p0&mask2)<<6 | rune(b1&maskx), 2
	}
	b2 := p[2]
	if b2 < locb || hicb < b2 {
		return RuneError, 1
	}
	if sz <= 3 {
		return rune(p0&mask3)<<12 | rune(b1&maskx)<<6 | rune(b2&maskx), 3
	}
	b3 := p[3]
	if b3 < locb || hicb < b3 {
		return RuneError, 1
	}
	return rune(p0&mask4)<<18 | rune(b1&maskx)<<12 | rune(b2&maskx)<<6 | rune(b3&maskx), 4
}

	}

	var mask image.Image
	switch mcm {
	case nil:
		// No-op.
	case color.AlphaModel:
		mask1 := image.NewAlpha(image.Rect(0, 0, srcw, srch))
		for y := 0; y < srch; y++ {
			for x := 0; x < srcw; x++ {
				a := uint8((23*x + 29*y) % 0x100)
				// Glyph masks are typically mostly zero,
				// so we only set a quarter of mask1's pixels.
				if a >= 0xc0 {

		// may be larger than we expect.
		return
	}
	t.Errorf("bad GC program for %v:\nwant %+v\ngot  %+v", name, mask0, mask)
}

func trimDead(mask []byte) []byte {
	for len(mask) > 0 && mask[len(mask)-1] == typeScalar {
		mask = mask[:len(mask)-1]
	}
	return mask
}

var infoPtr = []byte{typePointer}

type Ptr struct {
	*byte
}

					return
				}
			} else if mask0, ok := mask.(*image.Alpha); ok {
				switch src0 := src.(type) {
				case *image.Uniform:
					drawGlyphOver(dst0, r, src0, mask0, mp)
					return
				case *image.RGBA:
					drawRGBAMaskOver(dst0, r, src0, sp, mask0, mp)
					return
				case *image.Gray:
					drawGrayMaskOver(dst0, r, src0, sp, mask0, mp)
					return

	src0 := image.NewRGBA(image.Rect(0, 0, 100, 100))
	mask0 := image.NewRGBA(image.Rect(0, 0, 100, 100))
	for _, c := range clipTests {
		dst := dst0.SubImage(c.dr).(*image.RGBA)
		src := src0.SubImage(c.sr).(*image.RGBA)
		r, sp, mp := c.r, c.sp, c.mp
		if c.nilMask {
			clip(dst, &r, src, &sp, nil, nil)
		} else {
			clip(dst, &r, src, &sp, mask0.SubImage(c.mr), &mp)
		}

		}
	}
	return true
}

// Mask returns the result of masking the IP address ip with mask.
func (ip IP) Mask(mask IPMask) IP {
	if len(mask) == IPv6len && len(ip) == IPv4len && allFF(mask[:12]) {
		mask = mask[12:]
	}
	if len(mask) == IPv4len && len(ip) == IPv6len && bytealg.Equal(ip[:12], v4InV6Prefix) {
		ip = ip[12:]
	}
	n := len(ip)
	if n != len(mask) {
		return nil
	}
	out := make(IP, n)

func ValidatePodSubnetNodeMask(subnetStr string, c *kubeadm.ClusterConfiguration, fldPath *field.Path) field.ErrorList {
	allErrs := field.ErrorList{}
	// subnets were already validated
	subnets, _ := netutils.ParseCIDRs(strings.Split(subnetStr, ","))
	for _, podSubnet := range subnets {
		// obtain podSubnet mask
		mask := podSubnet.Mask
		maskSize, _ := mask.Size()

	} else if nbits == 32 {
		mb = bits.LeadingZeros32(uint32(mask))
		me = 32 - bits.TrailingZeros32(uint32(mask))
		mbn = bits.LeadingZeros32(^uint32(mask))
		men = 32 - bits.TrailingZeros32(^uint32(mask))
	} else {
		mb = bits.LeadingZeros64(uint64(mask))
		me = 64 - bits.TrailingZeros64(uint64(mask))
		mbn = bits.LeadingZeros64(^uint64(mask))
		men = 64 - bits.TrailingZeros64(^uint64(mask))
	}

	ARDINSTRETH: true,
}

// Instruction encoding masks.
const (
	// BTypeImmMask is a mask including only the immediate portion of
	// B-type instructions.
	BTypeImmMask = 0xfe000f80

	// CBTypeImmMask is a mask including only the immediate portion of
	// CB-type instructions.
	CBTypeImmMask = 0x1c7c

	// CJTypeImmMask is a mask including only the immediate portion of
	// CJ-type instructions.

the SIGPROF signal in particular.

The non-Go code should not change the signal mask on any threads
created by the Go runtime. If the non-Go code starts new threads
itself, those threads may set the signal mask as they please.

If the non-Go code starts a new thread, changes the signal mask, and
then invokes a Go function in that thread, the Go runtime will