CBitFieldMaskBit62 = 0x2
	CBitFieldMaskBit63 = 0x1
)

type SockaddrStorage struct {
	Family uint16
	Data   [118]byte
	_      uint64
}

type HDGeometry struct {
	Heads     uint8
	Sectors   uint8
	Cylinders uint16
	Start     uint64
}

type Statfs_t struct {
	Type    int64
	Bsize   int64
	Blocks  uint64
	Bfree   uint64
	Bavail  uint64
	Files   uint64
	Ffree   uint64

	CBitFieldMaskBit63 = 0x8000000000000000
)

type SockaddrStorage struct {
	Family uint16
	Data   [118]byte
	_      uint64
}

type HDGeometry struct {
	Heads     uint8
	Sectors   uint8
	Cylinders uint16
	Start     uint64
}

type Statfs_t struct {
	Type    int64
	Bsize   int64
	Blocks  uint64
	Bfree   uint64
	Bavail  uint64
	Files   uint64
	Ffree   uint64

</p>

<p>
If a vector instruction takes a length or an index as an argument then it will be the
first argument.
For example, <code>VLEIF</code> <code>$1,</code> <code>$16,</code> <code>V2</code> will load
the value sixteen into index one of <code>V2</code>.
Care should be taken when using vector instructions to ensure that they are available at
runtime.

		for j := 0; j < 4; j++ {
			if x := td[j][i]; x != w {
				t.Fatalf("td[%d][%d] = %#x, want %#x", j, i, x, w)
			}
			w = w<<24 | w>>8
		}
	}
}

// Test vectors are from FIPS 197:
//	https://csrc.nist.gov/publications/fips/fips197/fips-197.pdf

// Appendix A of FIPS 197: Key expansion examples
type KeyTest struct {
	key []byte
	enc []uint32

	REG_F7
	REG_F8
	REG_F9
	REG_F10
	REG_F11
	REG_F12
	REG_F13
	REG_F14
	REG_F15

	// Vector registers (VRs) - only available when the vector
	// facility is installed.
	// V0-V15 are aliases for F0-F15.
	// We keep them in a separate space to make printing etc. easier
	// If the code generator ever emits vector instructions it will
	// need to take into account the aliasing.
	REG_V0
	REG_V1
	REG_V2
	REG_V3

	auxvp := (*[1 << 28]uintptr)(add(unsafe.Pointer(argv), uintptr(n)*goarch.PtrSize))
	pairs := sysauxv(auxvp[:])
	auxv = auxvp[: pairs*2 : pairs*2]
}

const (
	_AT_NULL   = 0 // Terminates the vector
	_AT_PAGESZ = 6 // Page size in bytes
)

func sysauxv(auxv []uintptr) (pairs int) {
	var i int
	for i = 0; auxv[i] != _AT_NULL; i += 2 {
		tag, val := auxv[i], auxv[i+1]
		switch tag {

#define m1		X4
#define m2		X5
#define m3		X6
#define m4		X7
#define shufMask	X8	// input data endian conversion control mask
#define abefSave	X9	// digest hash vector inter-block buffer abef
#define cdghSave	X10	// digest hash vector inter-block buffer cdgh

#define nop(m,a)		// nop instead of final SHA256MSG1 for first and last few rounds

#define sha256msg1(m,a) \	// final SHA256MSG1 for middle rounds that require it

		fe.reduce()
		r.reduce()
		return fe == r
	}
	if err := quick.Check(f2, nil); err != nil {
		t.Errorf("failed FE->bytes->FE round-trip: %v", err)
	}

	// Check some fixed vectors from dalek
	type feRTTest struct {
		fe Element
		b  []byte
	}
	var tests = []feRTTest{
		{
			fe: Element{358744748052810, 1691584618240980, 977650209285361, 1429865912637724, 560044844278676},

	CBitFieldMaskBit62 = 0x2
	CBitFieldMaskBit63 = 0x1
)

type SockaddrStorage struct {
	Family uint16
	Data   [122]byte
	_      uint32
}

type HDGeometry struct {
	Heads     uint8
	Sectors   uint8
	Cylinders uint16
	Start     uint32
}

type Statfs_t struct {
	Type    int32
	Bsize   int32
	Blocks  uint64
	Bfree   uint64
	Bavail  uint64
	Files   uint64
	Ffree   uint64

	CBitFieldMaskBit62 = 0x2
	CBitFieldMaskBit63 = 0x1
)

type SockaddrStorage struct {
	Family uint16
	Data   [118]byte
	_      uint64
}

type HDGeometry struct {
	Heads     uint8
	Sectors   uint8
	Cylinders uint16
	Start     uint64
}

type Statfs_t struct {
	Type    int64
	Bsize   int64
	Blocks  uint64
	Bfree   uint64
	Bavail  uint64
	Files   uint64
	Ffree   uint64