On Tue, Nov 5, 2019 at 8:40 AM Paul Eggert <eggert@cs.ucla.edu> wrote:

> +    (overflow-error
> +     (if (or (natnump x) (cl-evenp y))
> +        1.0e+INF
> +       -1.0e+INF))))

That introduces a run-time dependency on cl-lib:

  ELC      calculator.elc

In end of data:
calculator.el:1644:1:Warning: the function `cl-evenp' might not be defined
at
    runtime.