inline fn repeat16u8(comptime count: usize, part: [16]u8) [16 * count]u8
inline fn repeat16u8(comptime count: usize, part: [16]u8) [16 * count]u8 { const buf: [count][part.len]u8 = @splat(part); const ptr: *const [16 * count]u8 = @ptrCast(&buf); return ptr.*; }