Finds the index of the first bit set in a string.
Format
#include <strings.h>
int ffs (int iteger);
Arguments
- integer
- The integer to be examined for the first bit set.
Description
This function finds the first bit set (beginning with the
least significant bit) and returns the index of that bit. Bits are
numbered starting at 1 (the least significant bit).
Return Values
| x | The index of the first bit
set. |
| 0 | If index
is 0. |
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