С++ код подсчета CRC16

#include <iostream>
#include <string>
static const unsigned short crc16_table[256] ={0x0000,0xC0C1,0xC181,0x0140,0xC301, 0x03C0,0x0280,0xC241,0xC601,0x06C0,0x0780,0xC741,0x0500,0xC5C1,0xC481,0x0440,0xCC01,0x0CC0,0x0D80,0xCD41,0x0F00,0xCFC1,0xCE81,0x0E40,0x0A00,0xCAC1,0xCB81, 0x0B40,0xC901,0x09C0,0x0880,0xC841,0xD801,0x18C0,0x1980,0xD941,0x1B00,0xDBC1, 0xDA81,0x1A40,0x1E00,0xDEC1, 0xDF81,0x1F40,0xDD01,0x1DC0,0x1C80,0xDC41,0x1400,0xD4C1,0xD581,0x1540,0xD701,0x17C0, 0x1680,0xD641,0xD201,0x12C0,0x1380,0xD341,0x1100,0xD1C1,0xD081, 0x1040,0xF001,0x30C0,0x3180,0xF141,0x3300,0xF3C1,0xF281,0x3240,0x3600,0xF6C1,0xF781,0x3740,0xF501,0x35C0,0x3480,0xF441,0x3C00,0xFCC1,0xFD81,0x3D40,0xFF01,0x3FC0, 0x3E80,0xFE41,0xFA01,0x3AC0,0x3B80,0xFB41,0x3900,0xF9C1,0xF881, 0x3840,0x2800,0xE8C1,0xE981,0x2940,0xEB01,0x2BC0,0x2A80,0xEA41,0xEE01,0x2EC0,0x2F80,0xEF41,0x2D00,0xEDC1, 0xEC81,0x2C40,0xE401,0x24C0,0x2580,0xE541,0x2700,0xE7C1, 0xE681,0x2640,0x2200,0xE2C1, 0xE381,0x2340,0xE101,0x21C0,0x2080,0xE041,0xA001,0x60C0,0x6180,0xA141,0x6300,0xA3C1,0xA281,0x6240,0x6600,0xA6C1,0xA781,0x6740,0xA501,0x65C0,0x6480,0xA441,0x6C00,0xACC1,0xAD81,0x6D40,0xAF01,0x6FC0, 0x6E80,0xAE41,0xAA01,0x6AC0,0x6B80,0xAB41,0x6900,0xA9C1,0xA881, 0x6840,0x7800,0xB8C1, 0xB981,0x7940,0xBB01,0x7BC0,0x7A80,0xBA41,0xBE01,0x7EC0,0x7F80,0xBF41,0x7D00,0xBDC1, 0xBC81,0x7C40,0xB401,0x74C0,0x7580,0xB541,0x7700,0xB7C1, 0xB681,0x7640,0x7200,0xB2C1, 0xB381,0x7340,0xB101,0x71C0,0x7080, 0xB041,0x5000,0x90C1,0x9181,0x5140,0x9301,0x53C0,0x5280,0x9241,0x9601,0x56C0,0x5780,0x9741,0x5500,0x95C1,0x9481,0x5440,0x9C01,0x5CC0,0x5D80,0x9D41,0x5F00,0x9FC1, 0x9E81,0x5E40,0x5A00,0x9AC1,0x9B81,0x5B40,0x9901,0x59C0,0x5880, 0x9841,0x8801,0x48C0,0x4980,0x8941,0x4B00,0x8BC1, 0x8A81,0x4A40,0x4E00,0x8EC1,0x8F81,0x4F40,0x8D01,0x4DC0,0x4C80, 0x8C41,0x4400,0x84C1,0x8581,0x4540,0x8701,0x47C0, 0x4680,0x8641,0x8201,0x42C0,0x4380,0x8341,0x4100,0x81C1,0x8081, 0x4040

};
unsigned short crc16 (const void *data, unsigned data_size)
{ 
if (!data || !data_size)
return 0;
 
unsigned short crc = 0; 
unsigned char* buf = (unsigned char*)data; 
while (data_size--) crc = (crc >> 8) ^ crc16_table[(unsigned char)crc ^ *buf++];
return crc;

}
// #L#2.0;imei;NA;A932\r\n
//int st[15]= {0x23,0x4c,0x23,0x32,0x2e,0x30,0x3b,0x69,0x6d,0x65,0x69,0x3b,0x4e,0x41,0x3b};
char st[]= "text;";

int main() {
// Write C++ code here
int size_st = sizeof(st);
int text_crc = crc16 (st,size_st-1);
//std::string s;
//s = std::to_string(text_crc);
std::cout << std::hex << text_crc;

return 0;
}