In Linux, "dc" will be GNU dc, which would have been written late 80s or early 90s, like most other GNU utilities. And it would have been maintained/modified ov

In Linux, "dc" will be GNU dc, which would have been written late 80s or early 90s, like most other GNU utilities. And it would have been maintained/modified over the years. (A better example would be the bsdgames collection. It's a lot older and has barely been touched over the years.)