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gcc/libiberty/ffs.c
DJ Delorie 5bed56d982 argv.c, [...]: Improve manual formatting.
* 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
2001-10-17 17:15:41 -04:00

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;
}