+/* Construct binary constants at compile time
+Code by Tom Torfs */
+
+/* Helper macros */
+#define HEX__(n) 0x##n##LU
+#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)
+
+/* User macros */
+#define B8(d) ((unsigned char)B8__(HEX__(d)))
+#define B16(dmsb,dlsb) (((unsigned short)B8(dmsb)<<8) \
++ B8(dlsb))
+#define B32(dmsb,db2,db3,dlsb) (((unsigned long)B8(dmsb)<<24) \
++ ((unsigned long)B8(db2)<<16) \
++ ((unsigned long)B8(db3)<<8) \
++ B8(dlsb))
+