Function rte_fls_u64

dpdk/lib/eal/include/rte_bitops.h:586–590

* Return the last (most-significant) bit set. * * @note The last (most significant) bit is at position 64. * @note rte_fls_u64(0) = 0, rte_fls_u64(1) = 1, * rte_fls_u64(0x8000000000000000) = 64 * * @param x * The input parameter. * @return * The last (most-significant) bit set, or 0 if the input is 0. */

 *     The last (most-significant) bit set, or 0 if the input is 0.
 */
static inline uint32_t
rte_fls_u64(uint64_t x)
{
	return (x == 0) ? 0 : 64 - rte_clz64(x);
}

/*********** Macros to work with powers of 2 ********/