State variables are the inductor currents and capacitor voltages.
Inductor current direction and capacitor voltages polarities are defined by the input and output of the block. A suffix may be added to the input for blocks containing more than one source. Sign conventions are indicated by the polarities of the voltage measurement and current measurement blocks. If voltage and current sources all generate the same frequency, these are column vectors. If sources with different frequencies are used, each column of the matrices corresponds to a frequency contained in the freqyss vector.