}
			}
		}
		mask = mask1
	default:
		b.Fatal("unknown mask color model", mcm)
	}

	b.StartTimer()
	for i := 0; i < b.N; i++ {
		// Scatter the destination rectangle to draw into.
		x := 3 * i % (dstw - srcw)
		y := 7 * i % (dsth - srch)

		DrawMask(dst, dst.Bounds().Add(image.Pt(x, y)), src, image.Point{}, mask, image.Point{}, op)
	}
}

// CPUSet represents a CPU affinity mask.
type CPUSet [cpuSetSize]cpuMask

func schedAffinity(trap uintptr, pid int, set *CPUSet) error {
	_, _, e := RawSyscall(trap, uintptr(pid), uintptr(unsafe.Sizeof(*set)), uintptr(unsafe.Pointer(set)))
	if e != 0 {
		return errnoErr(e)
	}
	return nil
}

// SchedGetaffinity gets the CPU affinity mask of the thread specified by pid.

	}{
		{
			name:              "filter empty resources",
			allResources:      [][]TopologyHint{},
			expectedResources: [][]TopologyHint(nil),
		},
		{
			name: "filter hints with nil socket mask 1/2",
			allResources: [][]TopologyHint{
				{
					{NUMANodeAffinity: nil, Preferred: false},
				},
				{
					{NUMANodeAffinity: nil, Preferred: true},
				},
			},
			expectedResources: [][]TopologyHint{

	var mod, mask, high, div uint64

	if n < deg {
		div = 0
		return poly, div
	}
	mask = 1<<deg - 1
	poly &= mask
	mod = poly
	div = 1
	deg--
	n--
	for n > deg {
		high = (mod >> deg) & 1
		div = (div << 1) | high
		mod <<= 1
		if high != 0 {
			mod ^= poly
		}
		n--
	}
	return mod & mask, div
}

func main() {
	w := new(bytes.Buffer)

	VX     d3, d1, d1  \
	VERLLF $7, a1, a1  \
	VERLLF $7, b1, b1  \
	VERLLF $7, c1, c1  \
	VERLLF $7, d1, d1

#define PERMUTE(mask, v0, v1, v2, v3) \
	VPERM v0, v0, mask, v0 \
	VPERM v1, v1, mask, v1 \
	VPERM v2, v2, mask, v2 \
	VPERM v3, v3, mask, v3

#define ADDV(x, v0, v1, v2, v3) \
	VAF x, v0, v0 \
	VAF x, v1, v1 \
	VAF x, v2, v2 \
	VAF x, v3, v3

	return 0, 0, ENOSYS
}

func Wait4(pid int, wstatus *WaitStatus, options int, rusage *Rusage) (wpid int, err error) {
	return 0, ENOSYS
}

func Umask(mask int) int {
	return 0
}

type Timespec struct {
	Sec  int64
	Nsec int64
}

func (ts *Timespec) timestamp() timestamp {
	return timestamp(ts.Sec*1e9) + timestamp(ts.Nsec)
}

// which is used for seeding all instances of rand.Source.
// a 64bit and a 63bit version of the array is printed to
// the standard output.

package main

import "fmt"

const (
	length = 607
	tap    = 273
	mask   = (1 << 63) - 1
	a      = 48271
	m      = (1 << 31) - 1
	q      = 44488
	r      = 3399
)

var (
	rngVec          [length]int64
	rngTap, rngFeed int
)

func seedrand(x int32) int32 {

import (
	"encoding/binary"
	"fmt"
	"log"
)

const debugDecode = false

const prefixOpcode = 1

// instFormat is a decoding rule for one specific instruction form.
// an instruction ins matches the rule if ins&Mask == Value
// DontCare bits should be zero, but the machine might not reject
// ones in those bits, they are mainly reserved for future expansion
// of the instruction set.

}

func ExampleIP_Mask() {
	ipv4Addr := net.ParseIP("192.0.2.1")
	// This mask corresponds to a /24 subnet for IPv4.
	ipv4Mask := net.CIDRMask(24, 32)
	fmt.Println(ipv4Addr.Mask(ipv4Mask))

	ipv6Addr := net.ParseIP("2001:db8:a0b:12f0::1")
	// This mask corresponds to a /32 subnet for IPv6.
	ipv6Mask := net.CIDRMask(32, 128)
	fmt.Println(ipv6Addr.Mask(ipv6Mask))

	// Output:
	// 192.0.2.0
	// 2001:db8::
}

 * and access mask of each ACE. If the SID matches, the allow/deny flags
 * and access mask are considered. If the ACE is a "deny"
 * ACE and <i>any</i> of the desired access bits match bits in the access
 * mask of the ACE, the whole access check fails. If the ACE is an "allow"
 * ACE and <i>all</i> of the bits in the desired access bits match bits in
 * the access mask of the ACE, the access check is successful. Otherwise,