asin

# File lib/cmath.rb, line 265
  def asin(z)
    begin
      if z.real? and z >= -1 and z <= 1
        RealMath.asin(z)
      else
        (-1.0).i * log(1.0.i * z + sqrt(1.0 - z * z))
      end
    rescue NoMethodError
      handle_no_method_error
    end
  end