RADIX_TREE_BITS_PER_HEIGHT
(RADIX_TREE_BITS_PER_HEIGHT * (height - 1))), height - 1);
#define RADIX_TREE_PTR_PER_NODE (1 << RADIX_TREE_BITS_PER_HEIGHT)
#define RADIX_TREE_MAX_HEIGHT (64 / RADIX_TREE_BITS_PER_HEIGHT)
__CTASSERT((64 % RADIX_TREE_BITS_PER_HEIGHT) == 0);
int hshift = RADIX_TREE_BITS_PER_HEIGHT * t->t_height;
const uint64_t mask = (UINT64_C(1) << RADIX_TREE_BITS_PER_HEIGHT) - 1;
for (shift = 64 - RADIX_TREE_BITS_PER_HEIGHT; shift >= 0;) {
shift -= RADIX_TREE_BITS_PER_HEIGHT;
newheight = shift / RADIX_TREE_BITS_PER_HEIGHT + 1;
hshift = RADIX_TREE_BITS_PER_HEIGHT * t->t_height;
shift -= RADIX_TREE_BITS_PER_HEIGHT;