The HP3000 had "SPL" - Systems Programming Language -- as its way of doing what C does. It had a specific syntax for checking the error codes: if <> then <what

The HP3000 had "SPL" - Systems Programming Language -- as its way of doing what C does. It had a specific syntax for checking the error codes: if <> then <whatever> so whatever previous arithmetic did, you could check the machine's flags directly. Can't do that in C. https://en.wikipedia.org/wiki/Systems_Programming_Language https://en.wikipedia.org/wiki/Systems_Programming_Language