Function rte_clz64

dpdk/lib/eal/include/rte_bitops.h:268–276

* Get the count of leading 0-bits in v. * * @param v * The value. * @return * The count of leading zero bits. */

 *   The count of leading zero bits.
 */
static inline unsigned int
rte_clz64(uint64_t v)
{
	unsigned long rv;

	(void)_BitScanReverse64(&rv, v);

	return (unsigned int)(sizeof(v) * CHAR_BIT - 1 - rv);
}

/**
 * Get the count of trailing 0-bits in v.