</p>

<pre>
const (
	bit0, mask0 = 1 &lt;&lt; iota, 1&lt;&lt;iota - 1  // bit0 == 1, mask0 == 0  (iota == 0)
	bit1, mask1                           // bit1 == 2, mask1 == 1  (iota == 1)
	_, _                                  //                        (iota == 2, unused)
	bit3, mask3                           // bit3 == 8, mask3 == 7  (iota == 3)
)
</pre>

<p>

		}
	}
	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)

        TaskDetails task1 = taskDetails(':task1', description: 'task1Description')
        taskDetails(':task2')
        TaskDetails task3 = taskDetails(':task3')
        RuleDetails rule1 = [getDescription: {'rule1Description'}] as RuleDetails
        RuleDetails rule2 = [getDescription: {'rule2Description'}] as RuleDetails

        List testDefaultTasks = ['task1', 'task2']

        when:

        task.setProject(createProject());
        task.execute();
    }

    /**
     * Masks a string against Ant property expansion.
     * This needs to be used when adding a File as String property
     * via {@link groovy.ant.AntBuilder}.
     * @param string to mask
     * @return The masked String
     */
    public static String maskFilename(String string) {

		{
			name:   "Mask 01 OR mask 10",
			masks:  [][]int{{0}, {1}},
			orMask: "11",
		},
		{
			name:   "Mask 11 OR mask 11",
			masks:  [][]int{{0, 1}, {0, 1}},
			orMask: "11",
		},
		{
			name:   "Mask 01 OR mask 10 OR mask 11",
			masks:  [][]int{{0}, {1}, {0, 1}},
			orMask: "11",
		},
		{
			name:   "Mask 1000 OR mask 0100 OR mask 0010 OR mask 0001",
			masks:  [][]int{{3}, {2}, {1}, {0}},

	// Load 1-15 bytes and corresponding mask.
	// Note: only the low 32-bits of R_LEN are used for the index.
	VLL R_LEN, (R_PTR), V_VAL
	VLL R_LEN, (R_MPTR), V_MASK

	// Compare each byte in input chunk against byte to be counted.
	// Each byte element will be set to either 0 (no match) or 1 (match).
	VCEQB V_CHAR, V_VAL, V_VAL // each byte will be either 0xff or 0x00
	VN    V_MASK, V_VAL, V_VAL // mask out most significant 7 bits

		r |= Less
	}
	return r
}

func (c CCMask) String() string {
	switch c {
	// 0-bit mask
	case Never:
		return "Never"

	// 1-bit masks
	case Equal:
		return "Equal"
	case Less:
		return "Less"
	case Greater:
		return "Greater"
	case Unordered:
		return "Unordered"

	// 2-bit masks
	case EqualOrUnordered:
		return "EqualOrUnordered"
	case LessOrEqual:
		return "LessOrEqual"

DATA masks<>+0xac(SB)/4, $0x00000000

DATA masks<>+0xb0(SB)/4, $0xffffffff
DATA masks<>+0xb4(SB)/4, $0xffffffff
DATA masks<>+0xb8(SB)/4, $0x00ffffff
DATA masks<>+0xbc(SB)/4, $0x00000000

DATA masks<>+0xc0(SB)/4, $0xffffffff
DATA masks<>+0xc4(SB)/4, $0xffffffff
DATA masks<>+0xc8(SB)/4, $0xffffffff
DATA masks<>+0xcc(SB)/4, $0x00000000

DATA masks<>+0xd0(SB)/4, $0xffffffff

		if i >= 56 {
			// we might have to write the length here if all fit in one block
			d.x[i] |= mask1b & length[i-56]
		}
	}

	// compress, and only keep the digest if all fit in one block
	block(d, d.x[:])

	var digest [Size]byte
	for i, s := range d.h {
		digest[i*4] = mask1b & byte(s>>24)
		digest[i*4+1] = mask1b & byte(s>>16)
		digest[i*4+2] = mask1b & byte(s>>8)

        def task1 = new TestTaskNode("task1")
        def task2 = new TestTaskNode("task2")
        def task3 = new TestTaskNode("task3")
        def task4 = new TestTaskNode("task4")
        def transform1 = new TestTransformStepNode("transform1")

        dependsOn(task1, [task2, transform1])
        dependsOn(task2, [task3])
        dependsOn(task3, [task4])