Method next_bit

sql/sql_bitmap.h:37–44

public:
  Table_map_iterator(ulonglong t): bmp(t){}
  uint next_bit()
  {
    if (!bmp)
      return BITMAP_END;
    uint bit= my_find_first_bit(bmp);
    bmp &= ~(1ULL << bit);
    return bit;
  }
  int operator++(int) { return next_bit(); }
  enum { BITMAP_END= 64 };
};