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- /* classes: h_files */
-
- #ifndef RXBITSETH
- #define RXBITSETH
-
- /***********************************************************
-
- Copyright 1995 by Tom Lord
-
- All Rights Reserved
-
- Permission to use, copy, modify, and distribute this software and its
- documentation for any purpose and without fee is hereby granted,
- provided that the above copyright notice appear in all copies and that
- both that copyright notice and this permission notice appear in
- supporting documentation, and that the name of the copyright holder not be
- used in advertising or publicity pertaining to distribution of the
- software without specific, written prior permission.
-
- Tom Lord DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
- INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
- EVENT SHALL TOM LORD BE LIABLE FOR ANY SPECIAL, INDIRECT OR
- CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF
- USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
- OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
- PERFORMANCE OF THIS SOFTWARE.
-
- ******************************************************************/
-
-
-
-
- typedef unsigned long RX_subset;
- #define RX_subset_bits (8 * sizeof (RX_subset))
- #define RX_subset_mask (RX_subset_bits - 1)
- typedef RX_subset * rx_Bitset;
-
- #ifdef __STDC__
- typedef void (*rx_bitset_iterator) (rx_Bitset, int member_index);
- #else
- typedef void (*rx_bitset_iterator) ();
- #endif
-
- /* Return the index of the word containing the Nth bit.
- */
- #define rx_bitset_subset(N) ((N) / RX_subset_bits)
-
- /* Return the conveniently-sized supset containing the Nth bit.
- */
- #define rx_bitset_subset_val(B,N) ((B)[rx_bitset_subset(N)])
-
-
- /* Genericly combine the word containing the Nth bit with a 1 bit mask
- * of the Nth bit position within that word.
- */
- #define RX_bitset_access(B,N,OP) \
- ((B)[rx_bitset_subset(N)] OP rx_subset_singletons[(N) & RX_subset_mask])
-
- #define RX_bitset_member(B,N) RX_bitset_access(B, N, &)
- #define RX_bitset_enjoin(B,N) RX_bitset_access(B, N, |=)
- #define RX_bitset_remove(B,N) RX_bitset_access(B, N, &= ~)
- #define RX_bitset_toggle(B,N) RX_bitset_access(B, N, ^= )
-
- /* How many words are needed for N bits?
- */
- #define rx_bitset_numb_subsets(N) (((N) + RX_subset_bits - 1) / RX_subset_bits)
-
- /* How much memory should be allocated for a bitset with N bits?
- */
- #define rx_sizeof_bitset(N) (rx_bitset_numb_subsets(N) * sizeof(RX_subset))
-
-
- extern RX_subset rx_subset_singletons[];
-
-
-
- #ifdef __STDC__
- extern int rx_bitset_is_equal (int size, rx_Bitset a, rx_Bitset b);
- extern int rx_bitset_is_subset (int size, rx_Bitset a, rx_Bitset b);
- extern int rx_bitset_empty (int size, rx_Bitset set);
- extern void rx_bitset_null (int size, rx_Bitset b);
- extern void rx_bitset_universe (int size, rx_Bitset b);
- extern void rx_bitset_complement (int size, rx_Bitset b);
- extern void rx_bitset_assign (int size, rx_Bitset a, rx_Bitset b);
- extern void rx_bitset_union (int size, rx_Bitset a, rx_Bitset b);
- extern void rx_bitset_intersection (int size,
- rx_Bitset a, rx_Bitset b);
- extern void rx_bitset_difference (int size, rx_Bitset a, rx_Bitset b);
- extern void rx_bitset_revdifference (int size,
- rx_Bitset a, rx_Bitset b);
- extern void rx_bitset_xor (int size, rx_Bitset a, rx_Bitset b);
- extern unsigned long rx_bitset_hash (int size, rx_Bitset b);
- extern int rx_bitset_population (int size, rx_Bitset a);
-
- #else /* STDC */
- extern int rx_bitset_is_equal ();
- extern int rx_bitset_is_subset ();
- extern int rx_bitset_empty ();
- extern void rx_bitset_null ();
- extern void rx_bitset_universe ();
- extern void rx_bitset_complement ();
- extern void rx_bitset_assign ();
- extern void rx_bitset_union ();
- extern void rx_bitset_intersection ();
- extern void rx_bitset_difference ();
- extern void rx_bitset_revdifference ();
- extern void rx_bitset_xor ();
- extern unsigned long rx_bitset_hash ();
- extern int rx_bitset_population ();
-
- #endif /* STDC */
-
-
-
- #endif /* RXBITSETH */
-