RANDLEVY(c,α,β)
c: parameter of the Lévy distribution
α: parameter of the Lévy distribution
β: parameter of the Lévy distribution, defaults to 0
For α = 1, β=0, the Lévy distribution reduces to the Cauchy (or Lorentzian) distribution.
For α = 2, β=0, the Lévy distribution reduces to the normal distribution.
If α ≤ 0 or α > 2, RANDLEVY returns #NUM! If β < -1 or β > 1, RANDLEVY returns #NUM!
RAND.