It depends on the target architecture and runtime library of course, as all computer code runs on the actual CPU where your game is running, not some “theoretical magical global CPU of today” construct.
But in 2021 a floating point unit (FPU) is pretty standard on most targets.
All that said, don’t do needless work, especially on mobile, as that just burns down battery life.
If you suspect you have a performance bottleneck, DO NOT START MAKING OPTIMIZATION CHANGES!!
Instead, start with the Profiler (Window → Analysis → Profiler) to confirm you actually DO have a performance issue and to confirm where it actually IS, otherwise you will tear up your codebase and it won’t get any faster.