unsigned short crc16_ccitt(unsigned char *data_p, unsigned short length) { unsigned char i; unsigned int data; unsigned int crc = 0xffff; if (length == 0) return (~crc); do { for (i=0, data=(unsigned int)0xff & *data_p++; i < 8; i++, data >>= 1) { if ((crc & 0x0001) ^ (data & 0x0001)) crc = (crc >> 1) ^ POLY; else crc >>= 1; } } while (--length); crc = ~crc; data = crc; crc = (crc << 8) | (data >> 8 & 0xff); return (crc); }帮我改成sv的语法

I apologize, but the code you provided seems to be incomplete as it ends abruptly, making it difficult to understand the intention behind it. Can you please provide the complete code? Additionally, it would be helpful to know the programming language being used.