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32/64 bit bitmaps

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This commit is contained in:
Michael Steil 2010-09-25 00:42:44 +00:00
parent bc36846f04
commit df455248a0
1 changed files with 11 additions and 3 deletions
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14
perfect6502.c
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@ -74,7 +74,15 @@ typedef uint8_t state_t;
*
************************************************************/
#if 1
typedef unsigned long long bitmap_t;
#define BITMAP_SHIFT 6
#define BITMAP_MASK 63
#else
typedef unsigned int bitmap_t;
#define BITMAP_SHIFT 5
#define BITMAP_MASK 31
#endif
#define DECLARE_BITMAP(name, count) bitmap_t name[count/sizeof(bitmap_t)+1]
@ -88,15 +96,15 @@ static inline void
set_bitmap(bitmap_t *bitmap, int index, BOOL state)
{
if (state)
bitmap[index>>5] |= 1 << (index & 31);
bitmap[index>>BITMAP_SHIFT] |= 1ULL << (index & BITMAP_MASK);
else
bitmap[index>>5] &= ~(1 << (index & 31));
bitmap[index>>BITMAP_SHIFT] &= ~(1ULL << (index & BITMAP_MASK));
}
static inline BOOL
get_bitmap(bitmap_t *bitmap, int index)
{
return (bitmap[index>>5] >> (index & 31)) & 1;
return (bitmap[index>>BITMAP_SHIFT] >> (index & BITMAP_MASK)) & 1;
}
/************************************************************