13.4、C++语言
#include<iostream.h>
class CRC16 {
public : int crc16(unsigned char * data,int size) {
unsigned char data_t ;
int crc,i,j;
crc = i = j = 0;
if(data == NULL) { return 0;
}
for(j=0;j<size;j++){
data_t = data[j];
crc = (data_t ^ crc);
for(i=0;i<8;i++) {
if((crc&0x1)==1) { crc = (crc >> 1) ^ 0xA001; }
else { crc >>= 1;
}
}
}
return crc;
}
};
int main() {
unsigned char array[] = {0x88,0x77,0xFF,0x9A};
int checkValue;
CRC16 test;
checkValue = test.crc16(array,sizeof(array));
cout<<"CRC16 值:"<<hex<<((checkValue >> 8) & 0xff);
cout<<" "<<hex<<(checkValue & 0xff)<<endl<<endl;
return 0;
}
