Function avr_libc::strnlen_PF

pub unsafe extern "C" fn strnlen_PF(src: uint_farptr_t, len: size_t) -> size_t

\ingroup avr_pgmspace \fn size_t strnlen_PF(uint_farptr_t s, size_t len) \brief Determine the length of a fixed-size string

The strnlen_PF() function is similar to strnlen(), except that \e s is a far pointer to a string in program space.

\param s A far pointer to the string in Flash \param len The maximum number of length to return

\returns The strnlen_PF function returns strlen_P(\e s), if that is less than \e len, or \e len if there is no '\0' character among the first \e len characters pointed to by \e s. The contents of RAMPZ SFR are undefined when the function returns.