#Kacper Augustynowicz 22 X 2017
function density(a::Float64, b::Float64)
    d::Float64 = (nextfloat(a) - a)

    println("min space between numbers in [$a,$b] is $d\n\nFirst 4 numbers :\n")
    x::Float64 = a

    for i in 1:4
        println(x, "\t\t", bits(x))
        x += d
    end
    println("\nLast 4 numbers :\n")

    y::Float64 = b - (3*d)
    for i in (4,3,2,1)
        println(y, "\t\t", bits(y))
        y += d
    end
end

density(1.0, 2.0)
println()
density(0.5, 1.0)
println()
density(2.0, 4.0)