diff options
| -rw-r--r-- | newlib/libc/sys/rtems/include/sys/bitset.h | 17 |
1 files changed, 16 insertions, 1 deletions
diff --git a/newlib/libc/sys/rtems/include/sys/bitset.h b/newlib/libc/sys/rtems/include/sys/bitset.h index ec75223e9..4c58f1fb7 100644 --- a/newlib/libc/sys/rtems/include/sys/bitset.h +++ b/newlib/libc/sys/rtems/include/sys/bitset.h @@ -26,7 +26,7 @@ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * - * $FreeBSD: head/sys/sys/bitset.h 318781 2017-05-24 10:09:54Z kib $ + * $FreeBSD: head/sys/sys/bitset.h 320755 2017-07-06 21:47:17Z kib $ */ #ifndef _SYS_BITSET_H_ @@ -216,6 +216,21 @@ __bit; \ }) +#define BIT_FLS(_s, p) __extension__ ({ \ + __size_t __i; \ + int __bit; \ + \ + __bit = 0; \ + for (__i = __bitset_words((_s)) - 1; __i >= 0; __i--) { \ + if ((p)->__bits[__i] != 0) { \ + __bit = flsl((p)->__bits[__i]); \ + __bit += __i * _BITSET_BITS; \ + break; \ + } \ + } \ + __bit; \ +}) + #define BIT_COUNT(_s, p) __extension__ ({ \ __size_t __i; \ int __count; \ |