//---------------------------------------------------------------------------
void kbitarray_clean_bit(t_kbitarray *self, off_t bit_index) {
unsigned char mask;
/* create a mask to zero out desired bit */
mask = BIT_IN_CHAR(bit_index);
mask = ~mask;
self->bitarray[BIT_CHAR(bit_index)] &= mask;
}
/***************************************************************************
* Function : BitArraySetBit
* Description: This function sets the specified bit to 1 in the bit array
* passed as a parameter.
* Parameters : ba - pointer to bit array
* bit - bit to set
* Effects : The specified bit in the bit array is set to 1.
* Returned : NONE
***************************************************************************/
void BitArraySetBit(bit_array_t *ba, unsigned int bit)
{
if (ba == NULL)
{
return; /* no bit to set */
}
if (ba->numBits <= bit)
{
return; /* bit out of range */
}
ba->array[BIT_CHAR(bit)] |= BIT_IN_CHAR(bit);
}
/***************************************************************************
* Function : BitArrayClearBit
* Description: This function sets the specified bit to 0 in the bit array
* passed as a parameter.
* Parameters : ba - pointer to bit array
* bit - bit to clear
* Effects : The specified bit in the bit array is set to 0.
* Returned : NONE
***************************************************************************/
void BitArrayClearBit(bit_array_t *ba, unsigned int bit)
{
unsigned char mask;
if (ba == NULL)
{
return; /* no bit to clear */
}
if (ba->numBits <= bit)
{
return; /* bit out of range */
}
/* create a mask to zero out desired bit */
mask = BIT_IN_CHAR(bit);
mask = ~mask;
ba->array[BIT_CHAR(bit)] &= mask;
}
int GetBitCount (BYTE *pTicketBet, WORD bits_in_universe)
{
int bits_enabled;
int bit;
BOOL status;
status = FALSE;
bits_enabled = 0;
// How many bits are enabled in an universe of universe_size elements?
for ( bit = 0; bit < bits_in_universe; bit++ )
{
status = (pTicketBet[BIT_CHAR(bit)] & BIT_IN_CHAR(bit)) != 0;
if ( status )
{
bits_enabled++;
}
}
return bits_enabled;
}
//---------------------------------------------------------------------------
void kbitarray_set_bit(t_kbitarray *self, off_t bit_index) {
self->bitarray[BIT_CHAR(bit_index)] |= BIT_IN_CHAR(bit_index);
}
//---------------------------------------------------------------------------
bool kbitarray_test_bit(t_kbitarray *self, off_t bit_index) {
return ((self->bitarray[BIT_CHAR(bit_index)] & BIT_IN_CHAR(bit_index)) != 0);
}
/***************************************************************************
* Function : BitArrayTestBit
* Description: This function tests the specified bit in the bit array
* passed as a parameter. A non-zero will be returned if the
* tested bit is set.
* Parameters : ba - pointer to bit array
* bit - bit to test
* Effects : None
* Returned : Non-zero if bit is set, otherwise 0. This function does
* not check the input. Tests on invalid input will produce
* unknown results.
***************************************************************************/
int BitArrayTestBit(bit_array_t *ba, unsigned int bit)
{
return((ba->array[BIT_CHAR(bit)] & BIT_IN_CHAR(bit)) != 0);
}
