cif_eval_numbers(1) on Linux

The text 4c7da672eecd, as Debian 13 (Trixie), Debian 12 (Bookworm), Debian 11 (Bullseye) shipped it. The page shows this text now.

read a CIF file and convert those number values that are written as simple fractions (e.g. "1/4") into a single floating point number.