-- McCarthy's 91 function

function f91(integer) : integer {
  push arg[0];
  push 100;
  lt;
  br {
    true: {
      push 10;
      push arg[0];
      sub;
      ret;
    }
    false: {
      push 11;
      push arg[0];
      add;
      call f91;
      tcall f91;
    }
  };
}

function main() {
  push 101;
  call f91;
  trace;
  pop;
  push 95;
  call f91;
  trace;
  pop;
  push 16;
  call f91;
  trace;
  pop;
  push 5;
  call f91;
  trace;
  pop;
  push void;
  ret;
}