public class Lt extends RelBinary {
  public Lt (int id) {
  }
  public Object sem () throws SemanticException {
    return super.sem("<");
  }
  public Object run () {
    if (aT == Integer.class && bT == Integer.class)
      return IntLit.lt((Number)a.run(), (Number)b.run());
    return FloatLit.lt((Number)a.run(), (Number)b.run());
  }
}