Using the function below to compute the crc of unsigned char tmp[] = {0x05, 0x08}, I got "b6 bb". But someone told me the correct result is "9e 17". Who is right? Comments on this issue will be appreciated very much. Thanks in advance.

Qt Code: 
  1. unsigned char tmp[] = {0x05, 0x08};
  2.     unsigned short polinomial = 0x0589;
  3.     unsigned short crc = checksum_calculateCRC16(tmp, 2,polinomial);
  4.     memcpy( tmp, &crc, 2 );
  5.     return crc;
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Qt Code: 
  1. unsigned short checksum_calculateCRC16(unsigned char data[], unsigned short length, unsigned short polynomial)
  2. {
  3. 	unsigned char j, xor_flag, bit_mask, byte; // bit counter, XOR flag, bit mask, current byte
  4. 	unsigned short i; // byte counter
  5. 	unsigned short total_length = length + 2; // original length + two 0x00 bytes
  6. 	unsigned short remainder = 0xFFFF; // CRC remainder
  7.  
  8. 	xor_flag = 0x00;
  9.  
  10. 	// Process all bytes
  11. 	for(i = 0; i < total_length; i++)
  12. 	{
  13. 		// Set bit mask for next byte
  14. 		bit_mask = 0x80;
  15.  
  16. 		// Add two bytes with 0x00 after original data
  17. 		byte = 0x00;
  18. 		if(i < length)
  19. 		{
  20. 			byte = data[i];
  21. 		}
  22.  
  23. 		// Process all bits
  24. 		for(j = 0; j < 8; j++)
  25. 		{
  26. 			// If left-most bit is a 1
  27. 			if((remainder & 0x8000) == 0x8000)
  28. 			{
  29. 				// Set XOR flag
  30. 				xor_flag = 0x01;
  31. 			}
  32.  
  33. 			// Right-shift remainder
  34. 			remainder = remainder << 1;
  35.  
  36. 			// If current bit is a 1
  37. 			if((byte & bit_mask) == bit_mask)
  38. 			{
  39. 				// Insert a 1 at right-most position of remainder
  40. 				remainder++;
  41. 			}
  42.  
  43. 			// If XOR flag is set
  44. 			if(xor_flag == 0x01)
  45. 			{
  46. 				// XOR remainder with polynomial
  47. 				remainder ^= polynomial;
  48. 				// Clear XOR flag
  49. 				xor_flag = 0x00;
  50. 			}
  51.  
  52. 			// Shift mask to process next bit
  53. 			bit_mask = bit_mask >> 1;
  54. 		}
  55. 	}
  56.  
  57. 	// Return remainder
  58. 	return remainder;
  59. }
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