crcstate
crc_start(struct crcstate *c)
crc_add(struct crcstate *c, const void *data, size_t num)
crc_get(struct crcstate *c)
void crc_start(struct crcstate *);
void crc_add(struct crcstate *, const void *, size_t);
uint32_t crc_get(struct crcstate *);
struct crcstate crc;
struct crcstate crc;