diff options
Diffstat (limited to 'gnu/lib/libg++/include/bitprims.h')
| -rw-r--r-- | gnu/lib/libg++/include/bitprims.h | 125 |
1 files changed, 125 insertions, 0 deletions
diff --git a/gnu/lib/libg++/include/bitprims.h b/gnu/lib/libg++/include/bitprims.h new file mode 100644 index 0000000..771acd9 --- /dev/null +++ b/gnu/lib/libg++/include/bitprims.h @@ -0,0 +1,125 @@ +#ifndef _BS_PRIMS +#define _BS_PRIMS + +/* For now, use unsigned short for compatibility with old libg++ code. + Later, change to unsigned long as the default. */ +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) (1 << (_BS_BITS_PER_WORD - 1 - (BITNO))) +#else +#define _BS_BITMASK(BITNO) (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 +#ifdef __GNUC__ +#define _BS_size_t __SIZE_TYPE__ +#else +#define _BS_size_t unsigned long +#endif +#endif + +#ifndef __P +#ifdef __STDC__ +#define __P(paramlist) paramlist +#else +#define __P(paramlist) () +#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 |
