# ifndef __BIN2HEXDIGIT_H__
#   define __BIN2HEXDIGIT_H__


#   define UPPER_CASE          0x20     // will be used as a complemeted bitmask
#   define LOWER_CASE          0x00
#   define CASE_MODE           UPPER_CASE

signed char bin2hexdigit (
  unsigned char vbin,
  unsigned char mode
);


# endif   // __BIN2HEXDIGIT_H__