/* Returns whether a value's bits is a subset of another value's bits.  */
static bool bits_subset_of(uint32_t a, uint32_t b)
/* Returns whether a value's bits is a subset of another value's bits.  */
static bool bits_subset_of(uint32_t a, uint32_t b)
{
	return (((a) & (~(b))) == 0);
}