Math with signed / unsigned

[Sze]

Had this answer based on @IntegratedQuantum’s comment, in a similar topic:

On type choices and "idiomatic" way to add a negative number to usize

So here is the resulting function applyShift2 and some tests: const std = @import("std"); // make it a function to make it easier to discuss alternative functions fn applyShift(orig: usize, shift: isize) usize { const s: isize = shift; var u: usize = orig; if (s < 0) u -|= @intCast(-s) else u +|= @intCast(s); return u; } fn applyShift2(orig: usize, shift: isize) usize { const s: isize = shift; var u: usize = orig; if (s < 0) u -|= @abs(s…