Function bitops_ffs64

ccan/ccan/bitops/bitops.h:32–38

* bitops_ffs64: find lowest set bit in a uint64_t * * Returns 1 for least significant bit, 32 for most significant bit, 0 * for no bits set. */

 * for no bits set.
 */
static inline int bitops_ffs64(uint64_t u)
{
	if (sizeof(u) == sizeof(long))
		return __builtin_ffsl(u);
	else
		return __builtin_ffsll(u);
}
#else
int bitops_ffs32(uint32_t u);
int bitops_ffs64(uint64_t u);