[unix-history] / usr / src / lib / libc / string / ffs.c

/*
 * Copyright (c) 1987 Regents of the University of California.
 * All rights reserved.  The Berkeley software License Agreement
 * specifies the terms and conditions for redistribution.
 */

#if defined(LIBC_SCCS) && !defined(lint)
static char sccsid[] = "@(#)ffs.c	5.1 (Berkeley) %G%";
#endif LIBC_SCCS and not lint

/*
 * ffs -- vax ffs instruction
 */
ffs(mask)
	register long mask;
{
	register int cnt;

	if (mask == 0)
		return(0);
	for (cnt = 1; !(mask & 1); cnt++)
		mask >>= 1;
	return(cnt);
}
Commit	Line	Data
dba1d438 KM	1	/*
	2	* Copyright (c) 1987 Regents of the University of California.
	3	* All rights reserved. The Berkeley software License Agreement
	4	* specifies the terms and conditions for redistribution.
	5	*/
	6
	7	#if defined(LIBC_SCCS) && !defined(lint)
	8	static char sccsid[] = "@(#)ffs.c 5.1 (Berkeley) %G%";
	9	#endif LIBC_SCCS and not lint
	10
	11	/*
	12	* ffs -- vax ffs instruction
	13	*/
	14	ffs(mask)
	15	register long mask;
	16	{
	17	register int cnt;
	18
	19	if (mask == 0)
	20	return(0);
	21	for (cnt = 1; !(mask & 1); cnt++)
	22	mask >>= 1;
	23	return(cnt);
	24	}