_HW_NCPUONLINE = 25
)

func sysctlInt(mib []uint32) (int32, bool) {
	var out int32
	nout := unsafe.Sizeof(out)
	ret := sysctl(&mib[0], uint32(len(mib)), (*byte)(unsafe.Pointer(&out)), &nout, nil, 0)
	if ret < 0 {
		return 0, false
	}
	return out, true
}

func sysctlUint64(mib []uint32) (uint64, bool) {
	var out uint64
	nout := unsafe.Sizeof(out)

	t.quantum = uint32(t.Data[6])
	t.ptrsize = uint32(t.Data[7])

	offset := func(word uint32) uint64 {
		return t.uintptr(t.Data[8+word*t.ptrsize:])
	}
	data := func(word uint32) []byte {
		return t.Data[offset(word):]
	}

	switch possibleVersion {
	case ver118, ver120:
		t.nfunctab = uint32(offset(0))
		t.nfiletab = uint32(offset(1))

		ARM | uint32(elf.R_ARM_GOT32)<<16,
		ARM | uint32(elf.R_ARM_PLT32)<<16,
		ARM | uint32(elf.R_ARM_GOTOFF)<<16,
		ARM | uint32(elf.R_ARM_GOTPC)<<16,
		ARM | uint32(elf.R_ARM_THM_PC22)<<16,
		ARM | uint32(elf.R_ARM_REL32)<<16,
		ARM | uint32(elf.R_ARM_CALL)<<16,
		ARM | uint32(elf.R_ARM_V4BX)<<16,
		ARM | uint32(elf.R_ARM_GOT_PREL)<<16,
		ARM | uint32(elf.R_ARM_PC24)<<16,

		dev := uint64(sys.Rdev) // May be int32 or uint32
		switch runtime.GOOS {
		case "aix":
			var major, minor uint32
			major = uint32((dev & 0x3fffffff00000000) >> 32)
			minor = uint32((dev & 0x00000000ffffffff) >> 0)
			h.Devmajor, h.Devminor = int64(major), int64(minor)
		case "linux":
			// Copied from golang.org/x/sys/unix/dev_linux.go.
			major := uint32((dev & 0x00000000000fff00) >> 8)

// A Uint32 is an atomic uint32. The zero value is zero.
type Uint32 struct {
	_ noCopy
	v uint32
}

// Load atomically loads and returns the value stored in x.
func (x *Uint32) Load() uint32 { return LoadUint32(&x.v) }

// Store atomically stores val into x.
func (x *Uint32) Store(val uint32) { StoreUint32(&x.v, val) }

// https://lemire.me/blog/2016/06/30/fast-random-shuffling
func (r *pcgRand) uint32n(n uint32) uint32 {
	v := r.uint32()
	prod := uint64(v) * uint64(n)
	low := uint32(prod)
	if low < n {
		thresh := uint32(-int32(n)) % n
		for low < thresh {
			v = r.uint32()
			prod = uint64(v) * uint64(n)
			low = uint32(prod)
		}
	}
	return uint32(prod >> 32)
}

// exp2 generates n with probability 1/2^(n+1).

//sys	GetLengthSid(sid *SID) (len uint32) = advapi32.GetLengthSid
//sys	CopySid(destSidLen uint32, destSid *SID, srcSid *SID) (err error) = advapi32.CopySid
//sys	AllocateAndInitializeSid(identAuth *SidIdentifierAuthority, subAuth byte, subAuth0 uint32, subAuth1 uint32, subAuth2 uint32, subAuth3 uint32, subAuth4 uint32, subAuth5 uint32, subAuth6 uint32, subAuth7 uint32, sid **SID) (err error) = advapi32.AllocateAndInitializeSid

}

func rsh5Mask32Ux64(v uint32, s uint64) uint32 {
	// riscv64:"SRLW",-"AND\t",-"SLTIU",-"SRL\t"
	return v >> (s & 31)
}

func rshMask32x64(v int32, s uint64) int32 {
	// arm64:"ASR",-"AND"
	// ppc64x:"ISEL",-"ORN"
	// riscv64:"SRAW","OR","SLTIU"
	// s390x:-"RISBGZ",-"AND",-"LOCGR"
	return v >> (s & 63)
}

func rsh5Mask32x64(v int32, s uint64) int32 {
	// riscv64:"SRAW",-"OR",-"SLTIU"

								drgba := dst0.RGBA64At(x, y)
								a := m - (uint32(srgba.A) * ma / m)
								dst0.SetRGBA64(x, y, color.RGBA64{
									R: uint16((uint32(drgba.R)*a + uint32(srgba.R)*ma) / m),
									G: uint16((uint32(drgba.G)*a + uint32(srgba.G)*ma) / m),
									B: uint16((uint32(drgba.B)*a + uint32(srgba.B)*ma) / m),
									A: uint16((uint32(drgba.A)*a + uint32(srgba.A)*ma) / m),
								})
							} else {

		for i, x := range v {
			order.PutUint16(bs[2*i:], x)
		}
	case *int32:
		order.PutUint32(bs, uint32(*v))
	case int32:
		order.PutUint32(bs, uint32(v))
	case []int32:
		for i, x := range v {
			order.PutUint32(bs[4*i:], uint32(x))
		}
	case *uint32:
		order.PutUint32(bs, *v)
	case uint32:
		order.PutUint32(bs, v)
	case []uint32:
		for i, x := range v {
			order.PutUint32(bs[4*i:], x)
		}