-#ifdef I_FAILED_TO_RTFM_RFC3629
-#define F0(x) (( x==0 ? R(0x90,0xc0) : \
- R(0x80,0xc0) ) \
- | ( R(0x80,0xc0) >> 6 ) \
- | ( R(0x80,0xc0) >> 12 ) \
- | x )
-#define F8(x) (( x==0 ? R(0xa0,0xc0) : \
- R(0x80,0xc0) ) \
- | ( R(0x80,0xc0) >> 6 ) \
- | ( R(0x80,0xc0) >> 12 ) \
- | ( R(0x80,0xc0) >> 18 ) \
- | x )
-#define FC(x) (( x==0 ? R(0x88,0xc0) : \
- R(0x80,0xc0) ) \
- | ( R(0x80,0xc0) >> 6 ) \
- | ( R(0x80,0xc0) >> 12 ) \
- | ( R(0x80,0xc0) >> 18 ) \
- | ( R(0x80,0xc0) >> 24 ) \
- | x )
-#define F(x) ( x<8 ? F0(x) : x<12 ? F8((x&3)) : x<14 ? FC((x&1)) : -1 )
-#else