/* taken from https://github.com/panzi/CRC-and-checksum-functions/ */
#ifndef __CRC32_H__
#define __CRC32_H__

#include <stdlib.h>           /* For size_t                           */
#include <stdint.h>           /* For uint8_t, uint16_t, uint32_t      */
#include <stdbool.h>          /* For bool, true, false                */

#define UPDC32(octet,crc) (crc_32_tab[((crc)\
     ^ ((uint8_t)octet)) & 0xff] ^ ((crc) >> 8))

uint32_t updateCRC32(unsigned char ch, uint32_t crc);
bool crc32file(const char *name, uint32_t *crc, long *charcnt);
uint32_t crc32buf(char *buf, size_t len);

#endif