ffs(3C)


ffs -- find first set bit

Synopsis

   #include <strings.h>
   

int ffs(const int i);

Description

ffs finds the first bit set in the argument passed it and returns the index of that bit. Bits are numbered starting at 1 from the low order bit. A return value of zero indicates that the value passed is zero.
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UnixWare 7 Release 7.1.4 - 25 April 2004