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)