The output $y$ switches between inputs $\mathrm{u1}$ and $\mathrm{u3}$, depending on the $\mathrm{u2}$ input.

$y\=\{\begin{array}{cc}\mathrm{u1}& \mathrm{u2}\\ \mathrm{u3}& \mathrm{otherwise}\end{array}$

The component described in this topic is from the Modelica Standard Library. To view the original documentation, which includes author and copyright information, click here.