BIN.h

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#ifndef G3D_BIN_h
#define G3D_BIN_h

#define _BIT(N, K) (((N >> (3*K)) & 1) << K)

#define _OCT_CODED_BIN(N) \
 (_BIT(N, 0) | _BIT(N, 1) | _BIT(N, 2) | _BIT(N, 3) | \
 _BIT(N, 4) | _BIT(N, 5) | _BIT(N, 6) | _BIT(N, 7) | \
 _BIT(N, | _BIT(N, 9) | _BIT(N, 10))

#define BIN11(N) _OCT_CODED_BIN(0 ## N ## UL)



/* turn a numeric literal into a hex constant 
 (avoids problems with leading zeroes) 
 8-bit constants max value 0x11111111, always fits in unsigned long 
*/ 
#define HEX__(n) 0x##n##LU 

/* 8-bit conversion function */ 
#define B8__(x) ((x&0x0000000FLU)?1:0) \
+((x&0x000000F0LU)?2:0) \
+((x&0x00000F00LU)?4:0) \
+((x&0x0000F000LU)?8:0) \
+((x&0x000F0000LU)?16:0) \
+((x&0x00F00000LU)?32:0) \
+((x&0x0F000000LU)?64:0) \
+((x&0xF0000000LU)?128:0) 

#define BIN8(d) ((unsigned char)B8__(HEX__(d))) 

#define BIN16(dmsb, dlsb) (((unsigned short)BIN8(dmsb) << 8) + BIN8(dlsb)) 


#define BIN32(dmsb,db2,db3,dlsb) \
 (((unsigned long)BIN8(dmsb) << 24) + \
 ((unsigned long)BIN8(db2) << 16) + \
 ((unsigned long)BIN8(db3) << 8) + \
 BIN8(dlsb)) 

#endif