FFS(3) BSD Programmer's Manual FFS(3)
ffs - find first bit set in a bit string
#include <string.h> int ffs(int value);
The ffs() function finds the first bit set in value and returns the index of that bit. Bits are numbered starting from 1, starting at the rightmost bit. A return value of 0 means that the argument was zero.
The ffs() function appeared in 4.3BSD. MirOS BSD #10-current April 19, 1991 1
Generated on 2014-02-10 02:47:05 by $MirOS: src/scripts/roff2htm,v 1.79 2014/02/10 00:36:11 tg Exp $
These manual pages and other documentation are copyrighted by their respective writers;
their source is available at our CVSweb,
AnonCVS, and other mirrors. The rest is Copyright © 2002‒2014 The MirOS Project, Germany.
This product includes material provided by Thorsten Glaser.
This manual page’s HTML representation is supposed to be valid XHTML/1.1; if not, please send a bug report – diffs preferred.