﻿``` Ss := [null, "", "1"];
ToIA(Ss)
ToIA(Ss, 3)
ToIA(Ss, Opt(3))

``` R8s := [0/0, 3.14];
ToIA(R8s)
ToIA(R8s, 3)
ToIA(R8s, Opt(3))

``` QR8s := [null, 0/0, 3.14];
ToIA(QR8s)
ToIA(QR8s, 3)
ToIA(QR8s, Opt(3))
