[stefncb]

Zig has bounds checking built-in. You can decide to remove it if you compile for ReleaseSafe instead of ReleaseFast, but it's always in debug builds.

[throwawaymaths]

Also note that you can compile your entire program in safety checked mode and compile functions with hot loops with release fast

[stefncb]

I just realized I swapped the two but it's too late. The bounds checks obviously stay in ReleaseSafe, not ReleaseFast.