module V_sine_generator(out);
 output out;
 voltage out;

 parameter real freq   = 1K from (0:inf),
                ampl   = 1,
                offset = 0;

 analog
 begin
   V(out) <+ ampl * sin(`M_TWO_PI * freq * $realtime) + offset;
   bound_step(0.05/freq);
 end
endmodule