Function rte_align64prevpow2

dpdk/lib/eal/include/rte_bitops.h:673–679

* Aligns 64b input parameter to the previous power of 2 * * @param v * The 64b value to align * * @return * Input parameter aligned to the previous power of 2 */

 *   Input parameter aligned to the previous power of 2
 */
static inline uint64_t
rte_align64prevpow2(uint64_t v)
{
	v = rte_combine64ms1b(v);

	return v - (v >> 1);
}

/**
 * Return the rounded-up log2 of a integer.