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Length: 1907 (0x773)
Types: TextFile
Names: »bits.h«
└─⟦a0efdde77⟧ Bits:30001252 EUUGD11 Tape, 1987 Spring Conference Helsinki
└─⟦this⟧ »EUUGD11/euug-87hel/sec1/rn/bits.h«
└─⟦9ae75bfbd⟧ Bits:30007242 EUUGD3: Starter Kit
└─⟦97f3ac3f8⟧ »EurOpenD3/news/rn.tar.Z«
└─⟦df9cf1b54⟧
└─⟦this⟧ »bits.h«
/* $Header: bits.h,v 4.3.1.2 86/11/03 09:49:58 lwall Exp $
*
* $Log: bits.h,v $
* Revision 4.3.1.2 86/11/03 09:49:58 lwall
* Added firstbit variable.
*
* Revision 4.3.1.1 85/05/10 11:31:52 lwall
* Branch for patches.
*
* Revision 4.3 85/05/01 11:36:39 lwall
* Baseline for release with 4.3bsd.
*
*/
EXT char *ctlarea INIT(Nullch); /* one bit for each article in current newsgroup */
/* with the following interpretation: */
/* 0 => unread */
/* 1 => read */
/* if subscripting is faster than shifting on your machine, define this */
#undef USESUBSCRIPT
#ifdef USESUBSCRIPT
EXT char powerof2[] INIT({1,2,4,8,16,32,64,128});
#define pow2(x) powerof2[x]
#else
#define pow2(x) (1 << (x))
#endif
#ifdef lint
EXT bool nonesuch INIT(FALSE);
#define ctl_set(a)
#define ctl_clear(a)
#define ctl_read(a) nonesuch
#define was_read(a) nonesuch
#else
#define ctl_set(a) (ctlarea[(OFFSET(a)) / BITSPERBYTE] |= pow2((OFFSET(a)) % BITSPERBYTE))
#define ctl_clear(a) (ctlarea[(OFFSET(a)) / BITSPERBYTE] &= ~pow2((OFFSET(a)) % BITSPERBYTE))
#define ctl_read(a) ((ctlarea[(OFFSET(a)) / BITSPERBYTE] & pow2((OFFSET(a)) % BITSPERBYTE)) != 0)
#define was_read(a) ((a)<firstbit || ctl_read(a))
#endif lint
EXT ART_NUM absfirst INIT(0); /* 1st real article in current newsgroup */
EXT ART_NUM firstart INIT(0); /* minimum unread article number in newsgroup */
EXT ART_NUM firstbit INIT(0); /* minimum valid bit, usually == firstart */
EXT ART_NUM lastart INIT(0); /* maximum article number in newsgroup */
#ifdef DELAYMARK
EXT FILE *dmfp INIT(Nullfp);
EXT char *dmname INIT(Nullch);
EXT int dmcount INIT(0);
#endif
void bits_init();
void checkpoint_rc();
void restore_ng();
void onemore();
void oneless();
void unmark_as_read();
void delay_unmark();
void mark_as_read();
void check_first();
#ifdef DELAYMARK
void yankback();
#endif
int chase_xrefs();
int initctl();
void grow_ctl();