msgcksum 200 kern/tty_nmea.c int fldcnt = 0, cksum = 0, msgcksum, n;
msgcksum 229 kern/tty_nmea.c msgcksum = 0;
msgcksum 233 kern/tty_nmea.c if (msgcksum)
msgcksum 234 kern/tty_nmea.c msgcksum <<= 4;
msgcksum 236 kern/tty_nmea.c msgcksum += *cs - '0';
msgcksum 238 kern/tty_nmea.c msgcksum += 10 + *cs - 'A';
msgcksum 245 kern/tty_nmea.c if (msgcksum != cksum) {