extern int _find_first_zero_bit_be(void * p, unsigned size);
extern int _find_next_zero_bit_be(void * p, int size, int offset);
extern int _find_first_bit_be(const unsigned long *p, unsigned size);
extern int _find_first_zero_bit_be(void * p, unsigned size);
extern int _find_next_zero_bit_be(void * p, int size, int offset);
extern int _find_first_bit_be(const unsigned long *p, unsigned size);