library(dff_unquoted) {
  cell (dff1) {
    area : 1;
    ff("IQ", "IQN") {
      next_state : !D;
      clocked_on : (CLK);
    }
    pin(D) {
      direction : input;
    }
    pin(CLK) {
      direction : input;
    }
    pin(Q) {
      direction: output;
      function : IQ;
    }
  }
  cell (dff2) {
    area : 1;
    ff(IQ, IQN) {
      next_state : D';
      clocked_on : CLK;
    }
    pin(D) {
      direction : input;
    }
    pin(CLK) {
      direction : input;
    }
    pin(Q) {
      direction: output;
      function : "IQ";
    }
  }
  cell (dffe) {
    area : 6;
    ff("IQ", "IQN") {
      next_state : (D&EN) | (IQ&!EN);
      clocked_on : !CLK;
    }
    pin(D) {
      direction : input;
    }
    pin(EN) {
      direction : input;
    }
    pin(CLK) {
      direction : input;
    }
    pin(Q) {
      direction: output;
      function : "IQ";
    }
    pin(QN) {
      direction: output;
      function : "IQN";
    }
  }
}