How to use with inequalities ?

I use code from `example2` to compile expressions such as:

  - `x > 2`
  - `x >= 3`
  - `x != 3`
  - `x == 3`

All I get is these types of errors:
```
$ ./example2.exe "(x > 1)"
Evaluating:
        (x > 1)
```

How can I use tinyexpr to return 0 or 1 for the inequalities ?