method

cbrt

ruby latest stable - Class: CMath

cbrt(z)

public

Returns the principal value of the cube root of z

CMath.cbrt(1 + 4i) #=> (1.449461632813119+0.6858152562177092i)

# File lib/cmath.rb, line 157
  def cbrt(z)
    z ** (1.0/3)
  end