“ivs (said, “eye-vees”) is a package dedicated to working with intervals in a generic way. It introduces a new type, the interval vector, which is generally referred to as an iv. An iv is generally created from two parallel vectors representing the starts and ends of the intervals…”
Examples:
> iv_set_union(iv(2, pi), iv(3, 5))
[1] [2, 5)
> iv_set_union(iv(2, pi), iv(4, 5))
[1] [2, 3.141593) [4, 5.000000)
> iv_set_intersect(iv(0, pi), iv(3, 1000))
[1] [3, 3.141593)
> iv_set_union(iv(0, pi), iv(3, 1000))
[1] [0, 1000)
> iv_between(exp(1), c(iv(0, pi)))
[1] TRUE
> iv_between(pi, c(iv(0, pi)))
[1] FALSE