gcc/libiberty/ffs.c
Mark Klein 29650b2b2f Makefile.in: Add ffs.c dependency.
* Makefile.in: Add ffs.c dependency.
* configure.in: Add ffs.c.
* ffs.c: New file.

From-SVN: r43784
2001-07-05 13:24:39 -04:00

30 lines
414 B
C

/* ffs -- Find the first bit set in the parameter
NAME
ffs -- Find the first bit set in the parameter
SYNOPSIS
int ffs (int valu)
DESCRIPTION
Find the first bit set in the parameter. Bits are numbered from
right to left, starting with bit 1.
*/
int
ffs (valu)
register int valu;
{
register int bit;
if (valu == 0)
return 0;
for (bit = 1; !(valu & 1); bit++)
valu >>= 1;
return bit;
}