To use the node in your project you should have the hio/nwt-gus-hi 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 x = getValue<input_Eingang>(ctx);
emitValue<output_Ausgang>(ctx, !x);
}
}