nextstep_checksum
*checksum = nextstep_checksum((uint8_t *)ondisk, (uint8_t *)checksum);
static uint16_t nextstep_checksum(unsigned char *, unsigned char *);
if (nextstep_checksum((uint8_t *)ondisk, (uint8_t *)checksum) !=
if (nextstep_checksum (next68klabel, checksum) !=
*checksum = htobe16(nextstep_checksum (next68klabel,
static uint16_t nextstep_checksum(const void *, const void *);