-int ukbhit(void);
-
-void AddLogLine(char *fileName, char *extData, char *c);
-void AddLogHex(char *fileName, char *extData, const uint8_t * data, const size_t len);
-void AddLogUint64(char *fileName, char *extData, const uint64_t data);
-void AddLogCurrentDT(char *fileName);
-void FillFileNameByUID(char *fileName, uint8_t * uid, char *ext, int byteCount);
-
-void print_hex(const uint8_t * data, const size_t len);
-char *sprint_hex(const uint8_t * data, const size_t len);
-char *sprint_bin(const uint8_t * data, const size_t len);
-char *sprint_bin_break(const uint8_t *data, const size_t len, const uint8_t breaks);
-char *sprint_hex_ascii(const uint8_t *data, const size_t len);
-
-void num_to_bytes(uint64_t n, size_t len, uint8_t* dest);
-uint64_t bytes_to_num(uint8_t* src, size_t len);
-void num_to_bytebits(uint64_t n, size_t len, uint8_t *dest);
-uint8_t *SwapEndian64(const uint8_t *src, const size_t len, const uint8_t blockSize);
-void SwapEndian64ex(const uint8_t *src, const size_t len, const uint8_t blockSize, uint8_t *dest);
-
-char param_getchar(const char *line, int paramnum);
-int param_getptr(const char *line, int *bg, int *en, int paramnum);
-uint8_t param_get8(const char *line, int paramnum);
-uint8_t param_get8ex(const char *line, int paramnum, int deflt, int base);
-uint32_t param_get32ex(const char *line, int paramnum, int deflt, int base);
-uint64_t param_get64ex(const char *line, int paramnum, int deflt, int base);
-uint8_t param_getdec(const char *line, int paramnum, uint8_t *destination);
-uint8_t param_isdec(const char *line, int paramnum);
-int param_gethex(const char *line, int paramnum, uint8_t * data, int hexcnt);
-int param_gethex_ex(const char *line, int paramnum, uint8_t * data, int *hexcnt);
-int param_getstr(const char *line, int paramnum, char * str);
-
-int hextobinarray( char *target, char *source);
-int hextobinstring( char *target, char *source);
-int binarraytohex( char *target, char *source, int length);
-void binarraytobinstring(char *target, char *source, int length);
-uint8_t GetParity( uint8_t *string, uint8_t type, int length);
-void wiegand_add_parity(uint8_t *target, uint8_t *source, uint8_t length);
-
-void xor(unsigned char * dst, unsigned char * src, size_t len);
-int32_t le24toh (uint8_t data[3]);
-uint32_t PackBits(uint8_t start, uint8_t len, uint8_t* bits);
-void rol(uint8_t *data, const size_t len);
\ No newline at end of file
+// Nibble logic
+#ifndef NIBBLE_HIGH
+# define NIBBLE_HIGH(b) ( (b & 0xF0) >> 4 )
+#endif
+#ifndef NIBBLE_LOW
+# define NIBBLE_LOW(b) ( b & 0x0F )
+#endif
+#ifndef CRUMB
+# define CRUMB(b,p) (((b & (0x3 << p) ) >> p ) & 0xF)
+#endif
+#ifndef SWAP_NIBBLE
+# define SWAP_NIBBLE(b) ( (NIBBLE_LOW(b)<< 4) | NIBBLE_HIGH(b))
+#endif
+
+// Binary Encoded Digit
+#ifndef BCD2DEC
+# define BCD2DEC(bcd) HornerScheme(bcd, 0x10, 10)
+#endif
+#ifndef DEC2BCD
+# define DEC2BCD(dec) HornerScheme(dec, 10, 0x10)
+#endif
+
+// used for save/load files
+#ifndef FILE_PATH_SIZE
+# define FILE_PATH_SIZE 1000
+#endif
+
+#ifndef ARRAYLEN
+# define ARRAYLEN(x) (sizeof(x)/sizeof((x)[0]))
+#endif
+
+extern int ukbhit(void);
+extern void AddLogLine(char *fileName, char *extData, char *c);
+extern void AddLogHex(char *fileName, char *extData, const uint8_t * data, const size_t len);
+extern void AddLogUint64(char *fileName, char *extData, const uint64_t data);
+extern void AddLogCurrentDT(char *fileName);
+extern void FillFileNameByUID(char *fileName, uint8_t * uid, char *ext, int byteCount);
+
+extern void print_hex(const uint8_t * data, const size_t len);
+extern void print_hex_break(const uint8_t *data, const size_t len, const uint8_t breaks);
+extern char *sprint_hex(const uint8_t * data, const size_t len);
+extern char *sprint_bin(const uint8_t * data, const size_t len);
+extern char *sprint_bin_break(const uint8_t *data, const size_t len, const uint8_t breaks);
+extern char *sprint_hex_ascii(const uint8_t *data, const size_t len);
+extern char *sprint_ascii(const uint8_t *data, const size_t len);
+
+extern void num_to_bytes(uint64_t n, size_t len, uint8_t* dest);
+extern uint64_t bytes_to_num(uint8_t* src, size_t len);
+extern void num_to_bytebits(uint64_t n, size_t len, uint8_t *dest);
+extern void num_to_bytebitsLSBF(uint64_t n, size_t len, uint8_t *dest);
+extern uint8_t *SwapEndian64(const uint8_t *src, const size_t len, const uint8_t blockSize);
+extern void SwapEndian64ex(const uint8_t *src, const size_t len, const uint8_t blockSize, uint8_t *dest);
+
+extern char param_getchar(const char *line, int paramnum);
+extern int param_getptr(const char *line, int *bg, int *en, int paramnum);
+extern uint8_t param_get8(const char *line, int paramnum);
+extern uint8_t param_get8ex(const char *line, int paramnum, int deflt, int base);
+extern uint32_t param_get32ex(const char *line, int paramnum, int deflt, int base);
+extern uint64_t param_get64ex(const char *line, int paramnum, int deflt, int base);
+extern uint8_t param_getdec(const char *line, int paramnum, uint8_t *destination);
+extern uint8_t param_isdec(const char *line, int paramnum);
+extern int param_gethex(const char *line, int paramnum, uint8_t * data, int hexcnt);
+extern int param_gethex_ex(const char *line, int paramnum, uint8_t * data, int *hexcnt);
+extern int param_getstr(const char *line, int paramnum, char * str);
+
+extern int hextobinarray( char *target, char *source);
+extern int hextobinstring( char *target, char *source);
+extern int binarraytohex( char *target, char *source, int length);
+extern void binarraytobinstring(char *target, char *source, int length);
+extern uint8_t GetParity( uint8_t *string, uint8_t type, int length);
+extern void wiegand_add_parity(uint8_t *target, uint8_t *source, uint8_t length);
+
+extern void xor(unsigned char * dst, unsigned char * src, size_t len);
+extern int32_t le24toh (uint8_t data[3]);
+extern uint32_t le32toh (uint8_t *data);
+extern uint32_t PackBits(uint8_t start, uint8_t len, uint8_t* bits);
+extern void rol(uint8_t *data, const size_t len);
+extern uint32_t SwapBits(uint32_t value, int nrbits);
+extern uint32_t reflect(uint32_t v, int b);
+extern uint64_t HornerScheme(uint64_t num, uint64_t divider, uint64_t factor);
+
+#endif
\ No newline at end of file