BIT_TO_WORD_SHIFT
uint * p = ((unsigned int *) map) + (start_bit >> BIT_TO_WORD_SHIFT);
size <<= BIT_TO_WORD_SHIFT;
uint * p = ((unsigned int *) map) + (start_bit >> BIT_TO_WORD_SHIFT);
size <<= BIT_TO_WORD_SHIFT;
word_num = first_bit >> BIT_TO_WORD_SHIFT;