Developer's Daily | Unix by Example |
main | java | perl | unix | dev directory | web log |
ffs ? find first bit set in a word |
#include <string.h> int ffs(int i); |
The ffs() function returns the position of the first bit set in the word i. The least significant bit is position 1 and the most significant position 32. |
The ffs() function returns the position of the first bit set, or NULL if no bits are set. |
BSD 4.3 |