To use the node in your project you should have the maksimbaturin/filament-counter library installed. Use the “File → Add Library” menu item in XOD IDE if you don’t have it yet. See Using libraries for more info.
C++ implementation
#pragma XOD dirtieness disable
node {
void evaluate(Context ctx) {
auto a = getValue<input_IN1>(ctx);
auto b = getValue<input_IN2>(ctx);
auto c = getValue<input_IN3>(ctx);
auto d = getValue<input_IN4>(ctx);
emitValue<output_OUT>(ctx, a * b * c * d);
}
}