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BITARRAY.C
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1993-04-05
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432b
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16 lines
char set[(BITCOUNT + 7) / 8];
int getbit(char *set, int number)
{
set += number / 8;
return (*set & (1 << (number % 8))) != 0; /* 0 or 1 */
}
int setbit(char *set, int number, int value)
{
set += number / 8;
if (value)
*set |= 1 << (number % 8); /* set bit */
else *set &= ~(1 << (number % 8)); /* clear bit */
}