Number Ruby

class Float
  def absolute_approx(other, epsilon=Float::EPSILON)
    puts((other-self).abs)
    return (other-self).abs <= epsilon
  end
end
puts (1.8 + 0.1).absolute_approx(1.9)               # => true
puts 10e10.absolute_approx(10e10+1e-5)              # => false
puts 98.6.absolute_approx(98.66)
puts 98.6.absolute_approx(98.66, 0.001)