func fLessLeq(a float64, f float64) bool {
	return a < 0 && f > Cf2 || a <= 0 && f < -Cf2
}

func fLeqEq(a float64, f float64) bool {
	return a <= 0 && f > Cf2 || a == 0 && f < -Cf2
}

func fLeqNeq(a int16, f float64) bool {
	return a <= 0 && f > Cf2 || a != 0 && f < -Cf2 // ERROR "Redirect Neq16 based on Leq16$"
}

func fLeqLess(a float32, f float64) bool {
	return a <= 0 && f > Cf2 || a < 0 && f < -Cf2
}

type Zipf struct {
	r            *Rand
	imax         float64
	v            float64
	q            float64
	s            float64
	oneminusQ    float64
	oneminusQinv float64
	hxm          float64
	hx0minusHxm  float64
}

func (z *Zipf) h(x float64) float64 {
	return math.Exp(z.oneminusQ*math.Log(z.v+x)) * z.oneminusQinv
}

func (z *Zipf) hinv(x float64) float64 {

// The special cases are the same as for [Log].
func Log10(x float64) float64 {
	if haveArchLog10 {
		return archLog10(x)
	}
	return log10(x)
}

func log10(x float64) float64 {
	return Log(x) * (1 / Ln10)
}

// Log2 returns the binary logarithm of x.
// The special cases are the same as for [Log].
func Log2(x float64) float64 {
	if haveArchLog2 {
		return archLog2(x)
	}
	return log2(x)
}

//    Strength-reduce    //
// --------------------- //

func Mul2(f float64) float64 {
	// 386/sse2:"ADDSD",-"MULSD"
	// amd64:"ADDSD",-"MULSD"
	// arm/7:"ADDD",-"MULD"
	// arm64:"FADDD",-"FMULD"
	// ppc64x:"FADD",-"FMUL"
	// riscv64:"FADDD",-"FMULD"
	return f * 2.0
}

func DivPow2(f1, f2, f3 float64) (float64, float64, float64) {
	// 386/sse2:"MULSD",-"DIVSD"
	// amd64:"MULSD",-"DIVSD"
	// arm/7:"MULD",-"DIVD"

}

func fma(x, y, z float64) float64 {
	// amd64/v3:-".*x86HasFMA"
	// amd64:"VFMADD231SD"
	// arm/6:"FMULAD"
	// arm64:"FMADDD"
	// s390x:"FMADD"
	// ppc64x:"FMADD"
	// riscv64:"FMADDD"
	return math.FMA(x, y, z)
}

func fms(x, y, z float64) float64 {
	// riscv64:"FMSUBD"
	return math.FMA(x, y, -z)
}

func fnms(x, y, z float64) float64 {
	// riscv64:"FNMSUBD",-"FNMADDD"

	storageInfo := clusterDriveMetrics.storageInfo

	m.Set(healthCapacityRawTotalBytes, float64(GetTotalCapacity(storageInfo.Disks)))
	m.Set(healthCapacityRawFreeBytes, float64(GetTotalCapacityFree(storageInfo.Disks)))
	m.Set(healthCapacityUsableTotalBytes, float64(GetTotalUsableCapacity(storageInfo.Disks, storageInfo)))
	m.Set(healthCapacityUsableFreeBytes, float64(GetTotalUsableCapacityFree(storageInfo.Disks, storageInfo)))

	return nil

	/* rounding will drop signed bit in RISCV, restore it */; \
	FSGNJD	F0, F1, F0;	\
	MOVD	F0, ret+8(FP); 	\
	RET

// func archFloor(x float64) float64
ROUNDFN(·archFloor, RDN)

// func archCeil(x float64) float64
ROUNDFN(·archCeil, RUP)

// func archTrunc(x float64) float64

		window time.Duration
		want   float64
		worst  []float64
	}{
		{0, 0, []float64{}},
		{time.Millisecond, 0, []float64{0, 0}},
		{time.Second, 0, []float64{0, 0}},
		{2 * time.Second, 0.5, []float64{0.5, 0.5}},
		{3 * time.Second, 1 / 3.0, []float64{1 / 3.0}},
		{4 * time.Second, 0.5, []float64{0.5}},
		{5 * time.Second, 3 / 5.0, []float64{3 / 5.0}},
		{6 * time.Second, 3 / 5.0, []float64{3 / 5.0}},
	} {

	if v.kind != KindUint64 {
		panic("called Uint64 on non-uint64 metric value")
	}
	return v.scalar
}

// Float64 returns the internal float64 value for the metric.
//
// If v.Kind() != KindFloat64, this method panics.
func (v Value) Float64() float64 {
	if v.kind != KindFloat64 {
		panic("called Float64 on non-float64 metric value")
	}
	return math.Float64frombits(v.scalar)
}

		return err
	}

	m.Set(memTotal, float64(memMetrics.Total))
	m.Set(memUsed, float64(memMetrics.Used))
	usedPerc := float64(memMetrics.Used) * 100 / float64(memMetrics.Total)
	m.Set(memUsedPerc, usedPerc)
	m.Set(memFree, float64(memMetrics.Free))
	m.Set(memBuffers, float64(memMetrics.Buffers))
	m.Set(memCache, float64(memMetrics.Cache))
	m.Set(memShared, float64(memMetrics.Shared))