scan_xshort man page
scan_xshort — parse an unsigned short integer in hexadecimal ASCII representation
size_t scan_xshort(const char *src,unsigned short *dest);
scan_xshort parses an unsigned short integer in hexadecimal ASCII representation from src and writes the result into dest. It returns the number of bytes read from src.
scan_xshort understands both upper and lower case letters.
scan_xshort does not expect or understand a "0x" prefix.
scan_8short(3), scan_short(3), scan_ushort(3).