[cmovq]

This is x86 assembly not C, but could be done just as easily in C. No kernel support either, since there isn’t one.

https://github.com/stillwwater/raycaster

[shric]

Please show me how to do the equivalent of https://github.com/stillwwater/raycaster/blob/master/src/boo... in C. There are many examples that are impossible in C, I just picked an obvious one.