Contents

class Integer
  def octagonal?
    n_gonal?(8)
    #return true if zero?
    #x = (Math.sqrt(48*self + 16) + 4)/12
    #x.to_i == x
  end
end

Version data entries

2 entries across 2 versions & 1 rubygems

Version	Path
numb-0.21.0	lib/numb/octagonal.rb
numb-0.20.0	lib/numb/octagonal.rb