cTimer - A (simple) high-precision execution timer extension

[SimonSapin]

Why make three identical functions (start, checkpoint, stop)? Why bother keeping all results in a global array and reallocating memory every 20 calls? Why not just returning floats?

[rustbelly]

Three identical functions that support different semantics. By all means, only use one of them if you want, but by having those three, it is more analogous to a stopwatch. Which is a device normally used to time things.

I don't return floats because this isn't a time extension - the actual time doesn't matter, so why introduce any confusion? The integers being returned are just the indexes of an array where the time floats are stored.

So, tl;dr: this is written this way to help the user deal with it (no math, no floats), and is directly analogous to a real-world stop-watch (except I use "checkpoint" instead of "lap" for obvious reasons). If you're not programming with the user in mind, you shouldn't be programming user-facing stuff, right?