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- #ifndef _BS_PRIMS
- #define _BS_PRIMS
-
- /* A bitstring is an array of _BS_word. */
- typedef unsigned long _BS_word;
-
- #define _BS_CHAR_BIT 8
- #define _BS_BITS_PER_WORD (_BS_CHAR_BIT*sizeof(_BS_word))
- #define _BS_WORDS_NEEDED(NBITS) ((NBITS+_BS_BITS_PER_WORD-1)/_BS_BITS_PER_WORD)
-
- /* For now, we number the bits in a _BS_word in little-endian order.
- Later, might use machine order. */
- #ifdef CHILL_LIB
- #ifndef BITS_BIG_ENDIAN
- #include "config.h"
- #endif
- #define _BS_BIGENDIAN BITS_BIG_ENDIAN
- #else
- #define _BS_BIGENDIAN 0
- #endif
-
- /* By "left" we mean where bit number 0 is.
- Hence, so left shift is << if we're numbering the bits in big-endian oder,
- and >> if we're numbering the bits in little-endian order.
- Currently, we always use little-endian order.
- Later, we might use machine-endian order. */
- #if _BS_BIGENDIAN
- #define _BS_LEFT <<
- #define _BS_RIGHT >>
- #else
- #define _BS_LEFT >>
- #define _BS_RIGHT <<
- #endif
-
- #if _BS_BIGENDIAN
- #define _BS_BITMASK(BITNO) ((_BS_word)1 << (_BS_BITS_PER_WORD - 1 - (BITNO)))
- #else
- #define _BS_BITMASK(BITNO) ((_BS_word)1 << (BITNO))
- #endif
-
- /* Given a PTR which may not be aligned on a _BS_word boundary,
- set NEW_PTR to point to (the beginning of) the corresponding _BS_word.
- Adjust the bit-offset OFFSET to compensate for the difference. */
- #define _BS_ADJUST_ALIGNED(NEW_PTR, PTR, OFFSET) \
- ( (NEW_PTR) = (_BS_word*)(((char*)(PTR)-(char*)0) & ~(sizeof(_BS_word)-1)), \
- (OFFSET) += (char*)(PTR) - (char*)(NEW_PTR) )
-
- /* Given a bit point (PTR, OFFSET) normalize it so that
- OFFSET < _BS_BITS_PER_WORD. */
- #define _BS_NORMALIZE(PTR, OFFSET) \
- { _BS_size_t __tmp_ind = _BS_INDEX (OFFSET); \
- (PTR) += __tmp_ind; \
- (OFFSET) -= __tmp_ind * _BS_BITS_PER_WORD; }
-
- #define _BS_INDEX(I) ((unsigned)(I) / _BS_BITS_PER_WORD)
- #define _BS_POS(I) ((I) & (_BS_BITS_PER_WORD -1 ))
-
- #ifndef _BS_size_t
- #if __GNUC__ > 1
- #define _BS_size_t __SIZE_TYPE__
- #else
- #define _BS_size_t unsigned long
- #endif
- #endif
-
- #ifndef __P
- #ifdef __STDC__
- #define __P(protos) protos
- #else
- #define __P(protos) ()
- #endif
- #endif /*!__P*/
- #if !defined(__STDC__) && !defined(const)
- #define const
- #endif
- #if !defined(__STDC__) && !defined(void)
- #define void int
- #endif
-
- /* The 16 2-operand raster-ops:
- These match the correspodning GX codes in X11. */
- enum _BS_alu {
- _BS_alu_clear = 0 /* 0 */,
- _BS_alu_and = 1 /* src & dst */,
- _BS_alu_andReverse = 2 /* src & ~dst */,
- _BS_alu_copy = 3 /* src */,
- _BS_alu_andInverted = 4 /* ~src & dst */,
- _BS_alu_noop = 5 /* dst */,
- _BS_alu_xor = 6 /* src ^ dst */,
- _BS_alu_or = 7 /* src | dst */,
- _BS_alu_nor = 8 /* ~src & ~dst */,
- _BS_alu_equiv = 9 /* ~(src ^ dst) */,
- _BS_alu_invert = 10 /* ~dst */,
- _BS_alu_orReverse = 11 /* src | ~dst */,
- _BS_alu_copyInverted = 12 /* ~src */,
- _BS_alu_orInverted = 13 /* ~src | dst */,
- _BS_alu_nand = 14 /* ~src | d~st */,
- _BS_alu_set = 15 /* ~src | dst */
- };
- #define _BS
- #define _BS
-
- #ifdef __cplusplus
- extern "C" {
- #endif
-
- extern void _BS_and __P((_BS_word*,int, const _BS_word*, int, _BS_size_t));
- extern void _BS_blt __P((enum _BS_alu,
- _BS_word*,int, const _BS_word*,int, _BS_size_t));
- extern void _BS_copy __P((_BS_word*,int, const _BS_word*,int, _BS_size_t));
- #define _BS_copy_0(DS, SS, LENGTH) _BS_copy(DS, 0, SS, 0, LENGTH)
- extern int _BS_count __P((const _BS_word*, int, _BS_size_t));
- extern int _BS_any __P((const _BS_word*, int, _BS_size_t));
- extern void _BS_clear __P((_BS_word*, int, _BS_size_t));
- extern void _BS_set __P((_BS_word*, int, _BS_size_t));
- extern void _BS_invert __P((_BS_word*, int, _BS_size_t));
- int _BS_lcompare_0 __P((_BS_word*, _BS_size_t, _BS_word*, _BS_size_t));
- extern void _BS_xor __P((_BS_word*,int, const _BS_word*,int, _BS_size_t));
-
- #ifdef __cplusplus
- }
- #endif
-
- #endif /* !_BS_PRIMS */
-