/usr/include/bglibs/crc/crc16_xmodem.h is in libbg1-dev 1.106-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 | #ifndef CRC16__XMODEM__H__
#define CRC16__XMODEM__H__
#include <uint16.h>
#define CRC16_XMODEM_POLY ((uint16)0x8408)
#define CRC16_XMODEM_INIT ((uint16)0x0000)
#define CRC16_XMODEM_POST ((uint16)0x0000)
extern const uint16 crc16_xmodem_table[256];
#define crc16_xmodem_update(C,D,L) gcrc16rfl((C),(D),(L),crc16_xmodem_table)
#define crc16_xmodem_block(B,L) crc16_xmodem_update(0,(B),(L))
#endif
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