Function avr_libc::ffs

pub unsafe extern "C" fn ffs(__val: i16) -> i16

\ingroup avr_string \fn int ffs(int val);

\brief This function finds the first (least significant) bit set in the input value.

\returns The ffs() function returns the position of the first (least significant) bit set in the word val, or 0 if no bits are set. The least significant bit is position 1.

\note For expressions that are constant at compile time, consider using the \ref _FFS macro instead.