// Cbrt returns the cube root of x.
//
// Special cases are:
//
//	Cbrt(±0) = ±0
//	Cbrt(±Inf) = ±Inf
//	Cbrt(NaN) = NaN
func Cbrt(x float64) float64 {
	if haveArchCbrt {
		return archCbrt(x)
	}
	return cbrt(x)
}

func cbrt(x float64) float64 {
	const (
		B1             = 715094163                   // (682-0.03306235651)*2**20

func archAtan2(y, x float64) float64 {
	panic("not implemented")
}

const haveArchAtanh = false

func archAtanh(x float64) float64 {
	panic("not implemented")
}

const haveArchCbrt = false

func archCbrt(x float64) float64 {
	panic("not implemented")
}

const haveArchCos = false

func archCos(x float64) float64 {
	panic("not implemented")
}

const haveArchCosh = false