C quick calculation of next multiple of 4?

Question

What\'s a fast way to round up an unsigned int to a multiple of 4?

A multiple of 4 has the two least significant bits 0, right? So I could

Answer 1

This is branch-free, generally configurable, easy to understand (if you know about C byte strings), and it lets you avoid thinking about the bit size of myInt:

myInt += "\x00\x03\x02\x01"[myInt & 0x3];

Only downside is a possible single memory access to elsewhere (static string storage) than the stack.