[lean_dbg_print_num] external print_num (s : object)
[lean_dbg_print_str] external print_str (s : object)

def print_bool (b : bool) :=
entry:
  case b [false_lbl, true_lbl];
true_lbl:
  s1 : object := "true";
  call print_str s1;
  ret;
false_lbl:
  s2 : object := "false";
  call print_str s2;
  ret;

def main : int32 :=
entry:
  n : object := 4294967295;
  b : bool   := is_scalar n;
  call print_num n;
  call print_bool b;
  i : object := nat2int n;
  b : bool   := is_scalar i;
  call print_num i;
  call print_bool b;
  i : object := ineg i;
  call print_num i;
  i : object := iadd i i;
  call print_num i;
  r : int32  := 0;
  ret r;