#ifndef _CRC_H_
 #define _CRC_H_
 

 #include "str.h"
 

 #define CRC16_LEN	4
 

 extern unsigned long int crc_32_tab[];
 extern unsigned short int ccitt_tab[];
 extern unsigned short int crc_16_tab[];
 

 
 unsigned short crcitt_string_ex( char *s, int len, register unsigned short ccitt);

 unsigned short crcitt_string( char *s, int len );
 void crcitt_string_array( char *dst, str src[], int size );
 

 void crc32_uint (str *source_string, unsigned int *hash_ret);
 

 #endif /* _CRC_H_ */