Add class overview
Add sums all input signals together into one output signal.
Any number of signals can be connected to Add.
Any unconnected inputs between input signals will be set to a value of zero
by default; for example, if signals are connected to input channels 0 and
2, then Add will add inputs 0, 1, and 2, with input[1] having a default value
of 0. Here is a flowgraph of the Add class: