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/* $Id: bits.h,v 3.0 1991/09/09 20:18:23 davison Trn $
*/
/* This software is Copyright 1991 by Stan Barber.
*
* Permission is hereby granted to copy, reproduce, redistribute or otherwise
* use this software as long as: there is no monetary profit gained
* specifically from the use or reproduction of this software, it is not
* sold, rented, traded or otherwise marketed, and this copyright notice is
* included prominently in any copy made.
*
* The authors make no claims as to the fitness or correctness of this software
* for any use whatsoever, and it is provided as is. Any use of this software
* is at the user's own risk.
*/
EXT char *found_bits INIT(Nullch);
EXT ART_NUM found_min;
/* 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
#define foundart(a) (found_bits[((a)-found_min) / BITSPERBYTE] \
|= pow2(((a)-found_min) % BITSPERBYTE))
#define artismissing(a) (!(found_bits[((a)-found_min) / BITSPERBYTE] \
& pow2(((a)-found_min) % BITSPERBYTE)))
EXT int dmcount INIT(0);
void bits_init _((void));
void rc_to_bits _((void));
void bits_to_rc _((void));
void setfoundbits _((void));
void setmissingbits _((void));
void onemore _((ARTICLE*));
void oneless _((ARTICLE*));
void onemissing _((ARTICLE*));
void unmark_as_read _((void));
void set_read _((ARTICLE*));
void set_unread _((ARTICLE*));
void delay_unmark _((ARTICLE*));
void mark_as_read _((void));
void check_first _((ART_NUM));
void yankback _((void));
int chase_xrefs _((bool_int));
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