Library: Input/output
Header
The header <streambuf> is part of the Input/output library of the C++ Standard Library. It defines the class template basic_streambuf, and the types streambuf and wstreambuf as aliases for specializations of the class template on char and wchar_t.
namespace std { template <class charT, class traits = char_traits<charT> > class basic_streambuf; typedef basic_streambuf<char> streambuf; typedef basic_streambuf<wchar_t> wstreambuf; }
ISO/IEC 14882:1998 -- International Standard for Information Systems --Programming Language C++, Section 27.5