Function bitops_ls64

ccan/ccan/bitops/bitops.h:127–131

* bitops_ls64: find lowest set bit in a uint64_t (must not be zero) * * Returns 0 for least significant bit, 63 for most significant bit. */

 * Returns 0 for least significant bit, 63 for most significant bit.
 */
static inline int bitops_ls64(uint64_t u)
{
	BITOPS_ASSERT_NONZERO(u);
	return bitops_ffs64(u) - 1;
}

/**
 * bitops_hs32: find highest set bit in a uint32_t (must not be zero)