protected: virtual pos_type seekpos(pos_type sp,

basic_istream& seekg( pos_type pos );

void clear( std::ios_base::iostate state = std::ios_base::goodbit

Defined in header

basic_ostream& seekp( pos_type pos ); (1)

std::basic_filebuf<CharT, Traits>* close();

protected: virtual int sync()

void close();

Defined in header

pos_type pubseekoff( off_type off, ios_base::seekdir dir, ios_base::openmode