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

If by "next multiple of 4" you mean the smallest multiple of 4 that is larger than your unsigned int value myint, then this will work:

(myint | 0x03) + 1;