The translator should automatically
vectorize (or "matricize") this function. For example, Sigma([1,2;3,4])
returns {3,7}
.
In contrast, sum([1,2;3,4])
returns 10.
function Sigma extends Modelica.Icons.Function; input Real u[2] "Vector of size two" annotation( Dialog(__Dymola_label = "<html><i>u</i></html>")); output Real Sigma "Sum of the first and second entries" annotation( Dialog(__Dymola_label = "<html>Σ</html>")); end Sigma;