crc.hh
上传用户:aoeyumen
上传日期:2007-01-06
资源大小:3329k
文件大小:0k
- /*
- File: crc.hh
- */
- #ifndef __crc_hh__
- #define __crc_hh__
- // 16-Bit CRC checksum class:
- class Crc16 {
- static const uint16 polynomial;
- uint16 crc;
- public:
- Crc16 (void){ crc = 0xFFFF; }
- void add_bits(uint32 bitstring, uint32 length);
- // feed a bitstring to the crc calculation (0 < length <= 32)
- uint16 checksum (void){
- // return the calculated checksum and erase it for next calls to add_bits()
- register uint16 sum = crc;
- crc = 0xFFFF;
- return sum;
- }
- };
- #endif