#ifndef _LIBCPP_IOSFWD
#define _LIBCPP_IOSFWD
#include <__config>
#include <wchar.h> // for mbstate_t
#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif
_LIBCPP_BEGIN_NAMESPACE_STD
class _LIBCPP_TYPE_VIS ios_base;
template<class _CharT> struct _LIBCPP_TYPE_VIS_ONLY char_traits;
template<class _Tp> class _LIBCPP_TYPE_VIS_ONLY allocator;
template <class _CharT, class _Traits = char_traits<_CharT> >
class _LIBCPP_TYPE_VIS_ONLY basic_ios;
template <class _CharT, class _Traits = char_traits<_CharT> >
class _LIBCPP_TYPE_VIS_ONLY basic_streambuf;
template <class _CharT, class _Traits = char_traits<_CharT> >
class _LIBCPP_TYPE_VIS_ONLY basic_istream;
template <class _CharT, class _Traits = char_traits<_CharT> >
class _LIBCPP_TYPE_VIS_ONLY basic_ostream;
template <class _CharT, class _Traits = char_traits<_CharT> >
class _LIBCPP_TYPE_VIS_ONLY basic_iostream;
template <class _CharT, class _Traits = char_traits<_CharT>,
class _Allocator = allocator<_CharT> >
class _LIBCPP_TYPE_VIS_ONLY basic_stringbuf;
template <class _CharT, class _Traits = char_traits<_CharT>,
class _Allocator = allocator<_CharT> >
class _LIBCPP_TYPE_VIS_ONLY basic_istringstream;
template <class _CharT, class _Traits = char_traits<_CharT>,
class _Allocator = allocator<_CharT> >
class _LIBCPP_TYPE_VIS_ONLY basic_ostringstream;
template <class _CharT, class _Traits = char_traits<_CharT>,
class _Allocator = allocator<_CharT> >
class _LIBCPP_TYPE_VIS_ONLY basic_stringstream;
template <class _CharT, class _Traits = char_traits<_CharT> >
class _LIBCPP_TYPE_VIS_ONLY basic_filebuf;
template <class _CharT, class _Traits = char_traits<_CharT> >
class _LIBCPP_TYPE_VIS_ONLY basic_ifstream;
template <class _CharT, class _Traits = char_traits<_CharT> >
class _LIBCPP_TYPE_VIS_ONLY basic_ofstream;
template <class _CharT, class _Traits = char_traits<_CharT> >
class _LIBCPP_TYPE_VIS_ONLY basic_fstream;
template <class _CharT, class _Traits = char_traits<_CharT> >
class _LIBCPP_TYPE_VIS_ONLY istreambuf_iterator;
template <class _CharT, class _Traits = char_traits<_CharT> >
class _LIBCPP_TYPE_VIS_ONLY ostreambuf_iterator;
typedef basic_ios<char> ios;
typedef basic_ios<wchar_t> wios;
typedef basic_streambuf<char> streambuf;
typedef basic_istream<char> istream;
typedef basic_ostream<char> ostream;
typedef basic_iostream<char> iostream;
typedef basic_stringbuf<char> stringbuf;
typedef basic_istringstream<char> istringstream;
typedef basic_ostringstream<char> ostringstream;
typedef basic_stringstream<char> stringstream;
typedef basic_filebuf<char> filebuf;
typedef basic_ifstream<char> ifstream;
typedef basic_ofstream<char> ofstream;
typedef basic_fstream<char> fstream;
typedef basic_streambuf<wchar_t> wstreambuf;
typedef basic_istream<wchar_t> wistream;
typedef basic_ostream<wchar_t> wostream;
typedef basic_iostream<wchar_t> wiostream;
typedef basic_stringbuf<wchar_t> wstringbuf;
typedef basic_istringstream<wchar_t> wistringstream;
typedef basic_ostringstream<wchar_t> wostringstream;
typedef basic_stringstream<wchar_t> wstringstream;
typedef basic_filebuf<wchar_t> wfilebuf;
typedef basic_ifstream<wchar_t> wifstream;
typedef basic_ofstream<wchar_t> wofstream;
typedef basic_fstream<wchar_t> wfstream;
template <class _State> class _LIBCPP_TYPE_VIS_ONLY fpos;
typedef fpos<mbstate_t> streampos;
typedef fpos<mbstate_t> wstreampos;
#ifndef _LIBCPP_HAS_NO_UNICODE_CHARS
typedef fpos<mbstate_t> u16streampos;
typedef fpos<mbstate_t> u32streampos;
#endif // _LIBCPP_HAS_NO_UNICODE_CHARS
#if defined(_NEWLIB_VERSION)
typedef long int streamoff; #else
typedef long long streamoff; #endif
template <class _CharT, class _Traits = char_traits<_CharT>,
class _Allocator = allocator<_CharT> >
class _LIBCPP_TYPE_VIS_ONLY basic_string;
typedef basic_string<char, char_traits<char>, allocator<char> > string;
typedef basic_string<wchar_t, char_traits<wchar_t>, allocator<wchar_t> > wstring;
_LIBCPP_END_NAMESPACE_STD
#endif // _LIBCPP_IOSFWD