Function bitops_hs64

ccan/ccan/bitops/bitops.h:149–153

* bitops_hs64: find highest 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_hs64(uint64_t u)
{
	BITOPS_ASSERT_NONZERO(u);
	return 63 - bitops_clz64(u);
}

/**
 * bitops_lc32: find lowest clear bit in a uint32_t (must not be 0xFFFFFFFF)