mirror of
git://gcc.gnu.org/git/gcc.git
synced 2024-12-24 02:28:57 +08:00
5bed56d982
* argv.c, asprintf.c, choose-temp.c, concat.c, cplus-dem.c, ffs.c, fnmatch.txh, getruntime.c, make-temp-file.c, mkstemps.c, pexecute.c, random.c, strsitnal.c, vasprintf.c: Improve manual formatting. * functions.texi: Regenerate. From-SVN: r46323
28 lines
473 B
C
28 lines
473 B
C
/* ffs -- Find the first bit set in the parameter
|
|
|
|
@deftypefn Supplemental int ffs (int @var{valu})
|
|
|
|
Find the first (least significant) bit set in @var{valu}. Bits are
|
|
numbered from right to left, starting with bit 1 (corresponding to the
|
|
value 1). If @var{valu} is zero, zero is returned.
|
|
|
|
@end deftypefn
|
|
|
|
*/
|
|
|
|
int
|
|
ffs (valu)
|
|
register int valu;
|
|
{
|
|
register int bit;
|
|
|
|
if (valu == 0)
|
|
return 0;
|
|
|
|
for (bit = 1; !(valu & 1); bit++)
|
|
valu >>= 1;
|
|
|
|
return bit;
|
|
}
|
|
|