Contents

class Integer
  def pronic?
    return false unless even? and (positive? or zero?)
    (Math.sqrt(succ).round - sqrt.round) == 1
  end

  alias :heteromecic? :pronic?
  alias :oblong? :pronic?
  alias :promic? :pronic?
end

Version data entries

5 entries across 5 versions & 1 rubygems

Version	Path
numb-0.186.0	lib/numb/pronic.rb
numb-0.185.0	lib/numb/pronic.rb
numb-0.184.0	lib/numb/pronic.rb
numb-0.181.0	lib/numb/pronic.rb
numb-0.170.0	lib/numb/pronic.rb