projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| 31cef89c | 1 | /* "@(#)cdefs.h 4.1 10/9/80" */ |
| d6f0eb77 HK |
2 | /* type modifiers */ |
| 3 | ||
| 4 | # define PTR 020 | |
| 5 | # define FTN 040 | |
| 6 | # define ARY 060 | |
| 7 | ||
| 8 | /* type packing constants */ | |
| 9 | ||
| 10 | # define TMASK 060 | |
| 11 | # define TMASK1 0300 | |
| 12 | # define TMASK2 0360 | |
| 13 | # define BTMASK 017 | |
| 14 | # define BTSHIFT 4 | |
| 15 | # define TSHIFT 2 | |
| 16 | ||
| 17 | /* macros */ | |
| 18 | ||
| 19 | # define BTYPE(x) (x&BTMASK) /* basic type of x */ | |
| 20 | # define ISUNSIGNED(x) ((x)<=ULONG&&(x)>=UCHAR) | |
| 21 | # define UNSIGNABLE(x) ((x)<=LONG&&(x)>=CHAR) | |
| 22 | # define ENUNSIGN(x) ((x)+(UNSIGNED-INT)) | |
| 23 | # define DEUNSIGN(x) ((x)+(INT-UNSIGNED)) | |
| 24 | # define ISPTR(x) ((x&TMASK)==PTR) | |
| 25 | # define ISFTN(x) ((x&TMASK)==FTN) /* is x a function type */ | |
| 26 | # define ISARY(x) ((x&TMASK)==ARY) /* is x an array type */ | |
| 27 | # define INCREF(x) (((x&~BTMASK)<<TSHIFT)|PTR|(x&BTMASK)) | |
| 28 | # define DECREF(x) (((x>>TSHIFT)&~BTMASK&0x3fff)|(x&BTMASK)) | |
| 29 | /* pack and unpack field descriptors (size and offset) */ | |
| 30 | # define PKFIELD(s,o) ((o<<6)|s) | |
| 31 | # define UPKFSZ(v) (v&077) | |
| 32 | # define UPKFOFF(v) (v>>6) | |
| 33 |