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