include/locale

// -*- C++ -*-
//===-------------------------- locale ------------------------------------===//
//
// The LLVM Compiler Infrastructure
//
// This file is dual licensed under the MIT and the University of Illinois Open
// Source Licenses. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//

#ifndef _LIBCPP_LOCALE
#define _LIBCPP_LOCALE

/*
 locale synopsis

namespace std
{

class locale
{
public:
 // types:
 class facet;
 class id;

 typedef int category;
 static const category // values assigned here are for exposition only
 none = 0x000,
 collate = 0x010,
 ctype = 0x020,
 monetary = 0x040,
 numeric = 0x080,
 time = 0x100,
 messages = 0x200,
 all = collate | ctype | monetary | numeric | time | messages;

 // construct/copy/destroy:
 locale() noexcept;
 locale(const locale& other) noexcept;
 explicit locale(const char* std_name);
 explicit locale(const string& std_name);
 locale(const locale& other, const char* std_name, category);
 locale(const locale& other, const string& std_name, category);
 template <class Facet> locale(const locale& other, Facet* f);
 locale(const locale& other, const locale& one, category);

 ~locale(); // not virtual

 const locale& operator=(const locale& other) noexcept;

 template <class Facet> locale combine(const locale& other) const;

 // locale operations:
 basic_string<char> name() const;
 bool operator==(const locale& other) const;
 bool operator!=(const locale& other) const;
 template <class charT, class Traits, class Allocator>
 bool operator()(const basic_string<charT,Traits,Allocator>& s1,
 const basic_string<charT,Traits,Allocator>& s2) const;

 // global locale objects:
 static locale global(const locale&);
 static const locale& classic();
};

template <class Facet> const Facet& use_facet(const locale&);
template <class Facet> bool has_facet(const locale&) noexcept;

// 22.3.3, convenience interfaces:
template <class charT> bool isspace (charT c, const locale& loc);
template <class charT> bool isprint (charT c, const locale& loc);
template <class charT> bool iscntrl (charT c, const locale& loc);
template <class charT> bool isupper (charT c, const locale& loc);
template <class charT> bool islower (charT c, const locale& loc);
template <class charT> bool isalpha (charT c, const locale& loc);
template <class charT> bool isdigit (charT c, const locale& loc);
template <class charT> bool ispunct (charT c, const locale& loc);
template <class charT> bool isxdigit(charT c, const locale& loc);
template <class charT> bool isalnum (charT c, const locale& loc);
template <class charT> bool isgraph (charT c, const locale& loc);
template <class charT> charT toupper(charT c, const locale& loc);
template <class charT> charT tolower(charT c, const locale& loc);

template<class Codecvt, class Elem = wchar_t,
 class Wide_alloc = allocator<Elem>,
 class Byte_alloc = allocator<char>>
class wstring_convert
{
public:
 typedef basic_string<char, char_traits<char>, Byte_alloc> byte_string;
 typedef basic_string<Elem, char_traits<Elem>, Wide_alloc> wide_string;
 typedef typename Codecvt::state_type state_type;
 typedef typename wide_string::traits_type::int_type int_type;

 explicit wstring_convert(Codecvt* pcvt = new Codecvt); // explicit in C++14
 wstring_convert(Codecvt* pcvt, state_type state);
 explicit wstring_convert(const byte_string& byte_err, // explicit in C++14
 const wide_string& wide_err = wide_string());
 wstring_convert(const wstring_convert&) = delete; // C++14
 wstring_convert & operator=(const wstring_convert &) = delete; // C++14
 ~wstring_convert();

 wide_string from_bytes(char byte);
 wide_string from_bytes(const char* ptr);
 wide_string from_bytes(const byte_string& str);
 wide_string from_bytes(const char* first, const char* last);

 byte_string to_bytes(Elem wchar);
 byte_string to_bytes(const Elem* wptr);
 byte_string to_bytes(const wide_string& wstr);
 byte_string to_bytes(const Elem* first, const Elem* last);

 size_t converted() const; // noexcept in C++14
 state_type state() const;
};

template <class Codecvt, class Elem = wchar_t, class Tr = char_traits<Elem>>
class wbuffer_convert
 : public basic_streambuf<Elem, Tr>
{
public:
 typedef typename Tr::state_type state_type;

 explicit wbuffer_convert(streambuf* bytebuf = 0, Codecvt* pcvt = new Codecvt,
 state_type state = state_type()); // explicit in C++14
 wbuffer_convert(const wbuffer_convert&) = delete; // C++14
 wbuffer_convert & operator=(const wbuffer_convert &) = delete; // C++14
 ~wbuffer_convert(); // C++14
 
 streambuf* rdbuf() const;
 streambuf* rdbuf(streambuf* bytebuf);

 state_type state() const;
};

// 22.4.1 and 22.4.1.3, ctype:
class ctype_base;
template <class charT> class ctype;
template <> class ctype<char>; // specialization
template <class charT> class ctype_byname;
template <> class ctype_byname<char>; // specialization

class codecvt_base;
template <class internT, class externT, class stateT> class codecvt;
template <class internT, class externT, class stateT> class codecvt_byname;

// 22.4.2 and 22.4.3, numeric:
template <class charT, class InputIterator> class num_get;
template <class charT, class OutputIterator> class num_put;
template <class charT> class numpunct;
template <class charT> class numpunct_byname;

// 22.4.4, col lation:
template <class charT> class collate;
template <class charT> class collate_byname;

// 22.4.5, date and time:
class time_base;
template <class charT, class InputIterator> class time_get;
template <class charT, class InputIterator> class time_get_byname;
template <class charT, class OutputIterator> class time_put;
template <class charT, class OutputIterator> class time_put_byname;

// 22.4.6, money:
class money_base;
template <class charT, class InputIterator> class money_get;
template <class charT, class OutputIterator> class money_put;
template <class charT, bool Intl> class moneypunct;
template <class charT, bool Intl> class moneypunct_byname;

// 22.4.7, message retrieval:
class messages_base;
template <class charT> class messages;
template <class charT> class messages_byname;

} // std

*/

#include <__config>
#include <__locale>
#include <algorithm>
#include <memory>
#include <ios>
#include <streambuf>
#include <iterator>
#include <limits>
#ifndef __APPLE__
#include <cstdarg>
#endif
#include <cstdlib>
#include <ctime>
#if defined(_LIBCPP_MSVCRT) || defined(__MINGW32__)
#include <support/win32/locale_win32.h>
#else // _LIBCPP_MSVCRT
#include <nl_types.h>
#endif // !_LIBCPP_MSVCRT

#ifdef __APPLE__
#include <Availability.h>
#endif

#include <__undef_min_max>

#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
#pragma GCC system_header
#endif

_LIBCPP_BEGIN_NAMESPACE_STD

#if defined(__APPLE__) || defined(__FreeBSD__)
# define _LIBCPP_GET_C_LOCALE 0
#elif defined(__NetBSD__)
# define _LIBCPP_GET_C_LOCALE LC_C_LOCALE
#else
# define _LIBCPP_GET_C_LOCALE __cloc()
 // Get the C locale object
 _LIBCPP_FUNC_VIS locale_t __cloc();
#define __cloc_defined
#endif

typedef _VSTD::remove_pointer<locale_t>::type __locale_struct;
typedef _VSTD::unique_ptr<__locale_struct, decltype(&freelocale)> __locale_unique_ptr;
#ifndef _LIBCPP_LOCALE__L_EXTENSIONS
typedef _VSTD::unique_ptr<__locale_struct, decltype(&uselocale)> __locale_raii;
#endif

// OSX has nice foo_l() functions that let you turn off use of the global
// locale. Linux, not so much. The following functions avoid the locale when
// that's possible and otherwise do the wrong thing. FIXME.
#if defined(__linux__) || defined(__EMSCRIPTEN__) || defined(_AIX)

#ifdef _LIBCPP_LOCALE__L_EXTENSIONS
decltype(MB_CUR_MAX_L(_VSTD::declval<locale_t>()))
inline _LIBCPP_INLINE_VISIBILITY
__mb_cur_max_l(locale_t __l)
{
 return MB_CUR_MAX_L(__l);
}
#else // _LIBCPP_LOCALE__L_EXTENSIONS
inline _LIBCPP_ALWAYS_INLINE
decltype(MB_CUR_MAX) __mb_cur_max_l(locale_t __l)
{
 __locale_raii __current(uselocale(__l), uselocale);
 return MB_CUR_MAX;
}
#endif // _LIBCPP_LOCALE__L_EXTENSIONS

inline _LIBCPP_ALWAYS_INLINE
wint_t __btowc_l(int __c, locale_t __l)
{
#ifdef _LIBCPP_LOCALE__L_EXTENSIONS
 return btowc_l(__c, __l);
#else
 __locale_raii __current(uselocale(__l), uselocale);
 return btowc(__c);
#endif
}

inline _LIBCPP_ALWAYS_INLINE
int __wctob_l(wint_t __c, locale_t __l)
{
#ifdef _LIBCPP_LOCALE__L_EXTENSIONS
 return wctob_l(__c, __l);
#else
 __locale_raii __current(uselocale(__l), uselocale);
 return wctob(__c);
#endif
}

inline _LIBCPP_ALWAYS_INLINE
size_t __wcsnrtombs_l(char *__dest, const wchar_t **__src, size_t __nwc,
 size_t __len, mbstate_t *__ps, locale_t __l)
{
#ifdef _LIBCPP_LOCALE__L_EXTENSIONS
 return wcsnrtombs_l(__dest, __src, __nwc, __len, __ps, __l);
#else
 __locale_raii __current(uselocale(__l), uselocale);
 return wcsnrtombs(__dest, __src, __nwc, __len, __ps);
#endif
}

inline _LIBCPP_ALWAYS_INLINE
size_t __wcrtomb_l(char *__s, wchar_t __wc, mbstate_t *__ps, locale_t __l)
{
#ifdef _LIBCPP_LOCALE__L_EXTENSIONS
 return wcrtomb_l(__s, __wc, __ps, __l);
#else
 __locale_raii __current(uselocale(__l), uselocale);
 return wcrtomb(__s, __wc, __ps);
#endif
}

inline _LIBCPP_ALWAYS_INLINE
size_t __mbsnrtowcs_l(wchar_t * __dest, const char **__src, size_t __nms,
 size_t __len, mbstate_t *__ps, locale_t __l)
{
#ifdef _LIBCPP_LOCALE__L_EXTENSIONS
 return mbsnrtowcs_l(__dest, __src, __nms, __len, __ps, __l);
#else
 __locale_raii __current(uselocale(__l), uselocale);
 return mbsnrtowcs(__dest, __src, __nms, __len, __ps);
#endif
}

inline _LIBCPP_ALWAYS_INLINE
size_t __mbrtowc_l(wchar_t *__pwc, const char *__s, size_t __n,
 mbstate_t *__ps, locale_t __l)
{
#ifdef _LIBCPP_LOCALE__L_EXTENSIONS
 return mbrtowc_l(__pwc, __s, __n, __ps, __l);
#else
 __locale_raii __current(uselocale(__l), uselocale);
 return mbrtowc(__pwc, __s, __n, __ps);
#endif
}

inline _LIBCPP_ALWAYS_INLINE
int __mbtowc_l(wchar_t *__pwc, const char *__pmb, size_t __max, locale_t __l)
{
#ifdef _LIBCPP_LOCALE__L_EXTENSIONS
 return mbtowc_l(__pwc, __pmb, __max, __l);
#else
 __locale_raii __current(uselocale(__l), uselocale);
 return mbtowc(__pwc, __pmb, __max);
#endif
}

inline _LIBCPP_ALWAYS_INLINE
size_t __mbrlen_l(const char *__s, size_t __n, mbstate_t *__ps, locale_t __l)
{
#ifdef _LIBCPP_LOCALE__L_EXTENSIONS
 return mbrlen_l(__s, __n, __ps, __l);
#else
 __locale_raii __current(uselocale(__l), uselocale);
 return mbrlen(__s, __n, __ps);
#endif
}

inline _LIBCPP_ALWAYS_INLINE
lconv *__localeconv_l(locale_t __l)
{
#ifdef _LIBCPP_LOCALE__L_EXTENSIONS
 return localeconv_l(__l);
#else
 __locale_raii __current(uselocale(__l), uselocale);
 return localeconv();
#endif
}

inline _LIBCPP_ALWAYS_INLINE
size_t __mbsrtowcs_l(wchar_t *__dest, const char **__src, size_t __len,
 mbstate_t *__ps, locale_t __l)
{
#ifdef _LIBCPP_LOCALE__L_EXTENSIONS
 return mbsrtowcs_l(__dest, __src, __len, __ps, __l);
#else
 __locale_raii __current(uselocale(__l), uselocale);
 return mbsrtowcs(__dest, __src, __len, __ps);
#endif
}

inline
int __snprintf_l(char *__s, size_t __n, locale_t __l, const char *__format, ...) {
 va_list __va;
 va_start(__va, __format);
#ifdef _LIBCPP_LOCALE__L_EXTENSIONS
 int __res = vsnprintf_l(__s, __n, __l, __format, __va);
#else
 __locale_raii __current(uselocale(__l), uselocale);
 int __res = vsnprintf(__s, __n, __format, __va);
#endif
 va_end(__va);
 return __res;
}

inline
int __asprintf_l(char **__s, locale_t __l, const char *__format, ...) {
 va_list __va;
 va_start(__va, __format);
#ifdef _LIBCPP_LOCALE__L_EXTENSIONS
 int __res = vasprintf_l(__s, __l, __format, __va);
#else
 __locale_raii __current(uselocale(__l), uselocale);
 int __res = vasprintf(__s, __format, __va);
#endif
 va_end(__va);
 return __res;
}

inline
int __sscanf_l(const char *__s, locale_t __l, const char *__format, ...) {
 va_list __va;
 va_start(__va, __format);
#ifdef _LIBCPP_LOCALE__L_EXTENSIONS
 int __res = vsscanf_l(__s, __l, __format, __va);
#else
 __locale_raii __current(uselocale(__l), uselocale);
 int __res = vsscanf(__s, __format, __va);
#endif
 va_end(__va);
 return __res;
}

#endif // __linux__

// __scan_keyword
// Scans [__b, __e) until a match is found in the basic_strings range
// [__kb, __ke) or until it can be shown that there is no match in [__kb, __ke).
// __b will be incremented (visibly), consuming CharT until a match is found
// or proved to not exist. A keyword may be "", in which will match anything.
// If one keyword is a prefix of another, and the next CharT in the input
// might match another keyword, the algorithm will attempt to find the longest
// matching keyword. If the longer matching keyword ends up not matching, then
// no keyword match is found. If no keyword match is found, __ke is returned
// and failbit is set in __err.
// Else an iterator pointing to the matching keyword is found. If more than
// one keyword matches, an iterator to the first matching keyword is returned.
// If on exit __b == __e, eofbit is set in __err. If __case_senstive is false,
// __ct is used to force to lower case before comparing characters.
// Examples:
// Keywords: "a", "abb"
// If the input is "a", the first keyword matches and eofbit is set.
// If the input is "abc", no match is found and "ab" are consumed.
template <class _InputIterator, class _ForwardIterator, class _Ctype>
_LIBCPP_HIDDEN
_ForwardIterator
__scan_keyword(_InputIterator& __b, _InputIterator __e,
 _ForwardIterator __kb, _ForwardIterator __ke,
 const _Ctype& __ct, ios_base::iostate& __err,
 bool __case_sensitive = true)
{
 typedef typename iterator_traits<_InputIterator>::value_type _CharT;
 size_t __nkw = static_cast<size_t>(_VSTD::distance(__kb, __ke));
 const unsigned char __doesnt_match = '\0';
 const unsigned char __might_match = '\1';
 const unsigned char __does_match = '\2';
 unsigned char __statbuf[100];
 unsigned char* __status = __statbuf;
 unique_ptr<unsigned char, void(*)(void*)> __stat_hold(0, free);
 if (__nkw > sizeof(__statbuf))
 {
 __status = (unsigned char*)malloc(__nkw);
 if (__status == 0)
 __throw_bad_alloc();
 __stat_hold.reset(__status);
 }
 size_t __n_might_match = __nkw; // At this point, any keyword might match
 size_t __n_does_match = 0; // but none of them definitely do
 // Initialize all statuses to __might_match, except for "" keywords are __does_match
 unsigned char* __st = __status;
 for (_ForwardIterator __ky = __kb; __ky != __ke; ++__ky, ++__st)
 {
 if (!__ky->empty())
 *__st = __might_match;
 else
 {
 *__st = __does_match;
 --__n_might_match;
 ++__n_does_match;
 }
 }
 // While there might be a match, test keywords against the next CharT
 for (size_t __indx = 0; __b != __e && __n_might_match > 0; ++__indx)
 {
 // Peek at the next CharT but don't consume it
 _CharT __c = *__b;
 if (!__case_sensitive)
 __c = __ct.toupper(__c);
 bool __consume = false;
 // For each keyword which might match, see if the __indx character is __c
 // If a match if found, consume __c
 // If a match is found, and that is the last character in the keyword,
 // then that keyword matches.
 // If the keyword doesn't match this character, then change the keyword
 // to doesn't match
 __st = __status;
 for (_ForwardIterator __ky = __kb; __ky != __ke; ++__ky, ++__st)
 {
 if (*__st == __might_match)
 {
 _CharT __kc = (*__ky)[__indx];
 if (!__case_sensitive)
 __kc = __ct.toupper(__kc);
 if (__c == __kc)
 {
 __consume = true;
 if (__ky->size() == __indx+1)
 {
 *__st = __does_match;
 --__n_might_match;
 ++__n_does_match;
 }
 }
 else
 {
 *__st = __doesnt_match;
 --__n_might_match;
 }
 }
 }
 // consume if we matched a character
 if (__consume)
 {
 ++__b;
 // If we consumed a character and there might be a matched keyword that
 // was marked matched on a previous iteration, then such keywords
 // which are now marked as not matching.
 if (__n_might_match + __n_does_match > 1)
 {
 __st = __status;
 for (_ForwardIterator __ky = __kb; __ky != __ke; ++__ky, ++__st)
 {
 if (*__st == __does_match && __ky->size() != __indx+1)
 {
 *__st = __doesnt_match;
 --__n_does_match;
 }
 }
 }
 }
 }
 // We've exited the loop because we hit eof and/or we have no more "might matches".
 if (__b == __e)
 __err |= ios_base::eofbit;
 // Return the first matching result
 for (__st = __status; __kb != __ke; ++__kb, ++__st)
 if (*__st == __does_match)
 break;
 if (__kb == __ke)
 __err |= ios_base::failbit;
 return __kb;
}

struct _LIBCPP_TYPE_VIS __num_get_base
{
 static const int __num_get_buf_sz = 40;

 static int __get_base(ios_base&);
 static const char __src[33];
};

_LIBCPP_FUNC_VIS
void __check_grouping(const string& __grouping, unsigned* __g, unsigned* __g_end,
 ios_base::iostate& __err);

template <class _CharT>
struct __num_get
 : protected __num_get_base
{
 static string __stage2_int_prep(ios_base& __iob, _CharT* __atoms, _CharT& __thousands_sep);
 static string __stage2_float_prep(ios_base& __iob, _CharT* __atoms, _CharT& __decimal_point,
 _CharT& __thousands_sep);
 static int __stage2_int_loop(_CharT __ct, int __base, char* __a, char*& __a_end,
 unsigned& __dc, _CharT __thousands_sep, const string& __grouping,
 unsigned* __g, unsigned*& __g_end, _CharT* __atoms);
 static int __stage2_float_loop(_CharT __ct, bool& __in_units, char& __exp,
 char* __a, char*& __a_end,
 _CharT __decimal_point, _CharT __thousands_sep,
 const string& __grouping, unsigned* __g,
 unsigned*& __g_end, unsigned& __dc, _CharT* __atoms);
};

template <class _CharT>
string
__num_get<_CharT>::__stage2_int_prep(ios_base& __iob, _CharT* __atoms, _CharT& __thousands_sep)
{
 locale __loc = __iob.getloc();
 use_facet<ctype<_CharT> >(__loc).widen(__src, __src + 26, __atoms);
 const numpunct<_CharT>& __np = use_facet<numpunct<_CharT> >(__loc);
 __thousands_sep = __np.thousands_sep();
 return __np.grouping();
}

template <class _CharT>
string
__num_get<_CharT>::__stage2_float_prep(ios_base& __iob, _CharT* __atoms, _CharT& __decimal_point,
 _CharT& __thousands_sep)
{
 locale __loc = __iob.getloc();
 use_facet<ctype<_CharT> >(__loc).widen(__src, __src + 32, __atoms);
 const numpunct<_CharT>& __np = use_facet<numpunct<_CharT> >(__loc);
 __decimal_point = __np.decimal_point();
 __thousands_sep = __np.thousands_sep();
 return __np.grouping();
}

template <class _CharT>
int
__num_get<_CharT>::__stage2_int_loop(_CharT __ct, int __base, char* __a, char*& __a_end,
 unsigned& __dc, _CharT __thousands_sep, const string& __grouping,
 unsigned* __g, unsigned*& __g_end, _CharT* __atoms)
{
 if (__a_end == __a && (__ct == __atoms[24] || __ct == __atoms[25]))
 {
 *__a_end++ = __ct == __atoms[24] ? '+' : '-';
 __dc = 0;
 return 0;
 }
 if (__grouping.size() != 0 && __ct == __thousands_sep)
 {
 if (__g_end-__g < __num_get_buf_sz)
 {
 *__g_end++ = __dc;
 __dc = 0;
 }
 return 0;
 }
 ptrdiff_t __f = find(__atoms, __atoms + 26, __ct) - __atoms;
 if (__f >= 24)
 return -1;
 switch (__base)
 {
 case 8:
 case 10:
 if (__f >= __base)
 return -1;
 break;
 case 16:
 if (__f < 22)
 break;
 if (__a_end != __a && __a_end - __a <= 2 && __a_end[-1] == '0')
 {
 __dc = 0;
 *__a_end++ = __src[__f];
 return 0;
 }
 return -1;
 }
 *__a_end++ = __src[__f];
 ++__dc;
 return 0;
}

template <class _CharT>
int
__num_get<_CharT>::__stage2_float_loop(_CharT __ct, bool& __in_units, char& __exp, char* __a, char*& __a_end,
 _CharT __decimal_point, _CharT __thousands_sep, const string& __grouping,
 unsigned* __g, unsigned*& __g_end, unsigned& __dc, _CharT* __atoms)
{
 if (__ct == __decimal_point)
 {
 if (!__in_units)
 return -1;
 __in_units = false;
 *__a_end++ = '.';
 if (__grouping.size() != 0 && __g_end-__g < __num_get_buf_sz)
 *__g_end++ = __dc;
 return 0;
 }
 if (__ct == __thousands_sep && __grouping.size() != 0)
 {
 if (!__in_units)
 return -1;
 if (__g_end-__g < __num_get_buf_sz)
 {
 *__g_end++ = __dc;
 __dc = 0;
 }
 return 0;
 }
 ptrdiff_t __f = find(__atoms, __atoms + 32, __ct) - __atoms;
 if (__f >= 32)
 return -1;
 char __x = __src[__f];
 if (__x == '-' || __x == '+')
 {
 if (__a_end == __a || (__a_end[-1] & 0x5F) == (__exp & 0x7F))
 {
 *__a_end++ = __x;
 return 0;
 }
 return -1;
 }
 if (__x == 'x' || __x == 'X')
 __exp = 'P';
 else if ((__x & 0x5F) == __exp)
 {
 __exp |= 0x80;
 if (__in_units)
 {
 __in_units = false;
 if (__grouping.size() != 0 && __g_end-__g < __num_get_buf_sz)
 *__g_end++ = __dc;
 }
 }
 *__a_end++ = __x;
 if (__f >= 22)
 return 0;
 ++__dc;
 return 0;
}

_LIBCPP_EXTERN_TEMPLATE2(struct _LIBCPP_TYPE_VIS __num_get<char>)
_LIBCPP_EXTERN_TEMPLATE2(struct _LIBCPP_TYPE_VIS __num_get<wchar_t>)

template <class _CharT, class _InputIterator = istreambuf_iterator<_CharT> >
class _LIBCPP_TYPE_VIS_ONLY num_get
 : public locale::facet,
 private __num_get<_CharT>
{
public:
 typedef _CharT char_type;
 typedef _InputIterator iter_type;

 _LIBCPP_ALWAYS_INLINE
 explicit num_get(size_t __refs = 0)
 : locale::facet(__refs) {}

 _LIBCPP_ALWAYS_INLINE
 iter_type get(iter_type __b, iter_type __e, ios_base& __iob,
 ios_base::iostate& __err, bool& __v) const
 {
 return do_get(__b, __e, __iob, __err, __v);
 }

 _LIBCPP_ALWAYS_INLINE
 iter_type get(iter_type __b, iter_type __e, ios_base& __iob,
 ios_base::iostate& __err, long& __v) const
 {
 return do_get(__b, __e, __iob, __err, __v);
 }

 _LIBCPP_ALWAYS_INLINE
 iter_type get(iter_type __b, iter_type __e, ios_base& __iob,
 ios_base::iostate& __err, long long& __v) const
 {
 return do_get(__b, __e, __iob, __err, __v);
 }

 _LIBCPP_ALWAYS_INLINE
 iter_type get(iter_type __b, iter_type __e, ios_base& __iob,
 ios_base::iostate& __err, unsigned short& __v) const
 {
 return do_get(__b, __e, __iob, __err, __v);
 }

 _LIBCPP_ALWAYS_INLINE
 iter_type get(iter_type __b, iter_type __e, ios_base& __iob,
 ios_base::iostate& __err, unsigned int& __v) const
 {
 return do_get(__b, __e, __iob, __err, __v);
 }

 _LIBCPP_ALWAYS_INLINE
 iter_type get(iter_type __b, iter_type __e, ios_base& __iob,
 ios_base::iostate& __err, unsigned long& __v) const
 {
 return do_get(__b, __e, __iob, __err, __v);
 }

 _LIBCPP_ALWAYS_INLINE
 iter_type get(iter_type __b, iter_type __e, ios_base& __iob,
 ios_base::iostate& __err, unsigned long long& __v) const
 {
 return do_get(__b, __e, __iob, __err, __v);
 }

 _LIBCPP_ALWAYS_INLINE
 iter_type get(iter_type __b, iter_type __e, ios_base& __iob,
 ios_base::iostate& __err, float& __v) const
 {
 return do_get(__b, __e, __iob, __err, __v);
 }

 _LIBCPP_ALWAYS_INLINE
 iter_type get(iter_type __b, iter_type __e, ios_base& __iob,
 ios_base::iostate& __err, double& __v) const
 {
 return do_get(__b, __e, __iob, __err, __v);
 }

 _LIBCPP_ALWAYS_INLINE
 iter_type get(iter_type __b, iter_type __e, ios_base& __iob,
 ios_base::iostate& __err, long double& __v) const
 {
 return do_get(__b, __e, __iob, __err, __v);
 }

 _LIBCPP_ALWAYS_INLINE
 iter_type get(iter_type __b, iter_type __e, ios_base& __iob,
 ios_base::iostate& __err, void*& __v) const
 {
 return do_get(__b, __e, __iob, __err, __v);
 }

 static locale::id id;

protected:
 _LIBCPP_ALWAYS_INLINE
 ~num_get() {}

 template <class _Fp>
 iter_type __do_get_floating_point
 (iter_type __b, iter_type __e, ios_base& __iob,
 ios_base::iostate& __err, _Fp& __v) const;

 template <class _Signed>
 iter_type __do_get_signed
 (iter_type __b, iter_type __e, ios_base& __iob,
 ios_base::iostate& __err, _Signed& __v) const;

 template <class _Unsigned>
 iter_type __do_get_unsigned
 (iter_type __b, iter_type __e, ios_base& __iob,
 ios_base::iostate& __err, _Unsigned& __v) const;


 virtual iter_type do_get(iter_type __b, iter_type __e, ios_base& __iob,
 ios_base::iostate& __err, bool& __v) const;

 virtual iter_type do_get(iter_type __b, iter_type __e, ios_base& __iob,
 ios_base::iostate& __err, long& __v) const
 { return this->__do_get_signed ( __b, __e, __iob, __err, __v ); }

 virtual iter_type do_get(iter_type __b, iter_type __e, ios_base& __iob,
 ios_base::iostate& __err, long long& __v) const
 { return this->__do_get_signed ( __b, __e, __iob, __err, __v ); }

 virtual iter_type do_get(iter_type __b, iter_type __e, ios_base& __iob,
 ios_base::iostate& __err, unsigned short& __v) const
 { return this->__do_get_unsigned ( __b, __e, __iob, __err, __v ); }

 virtual iter_type do_get(iter_type __b, iter_type __e, ios_base& __iob,
 ios_base::iostate& __err, unsigned int& __v) const
 { return this->__do_get_unsigned ( __b, __e, __iob, __err, __v ); }

 virtual iter_type do_get(iter_type __b, iter_type __e, ios_base& __iob,
 ios_base::iostate& __err, unsigned long& __v) const
 { return this->__do_get_unsigned ( __b, __e, __iob, __err, __v ); }

 virtual iter_type do_get(iter_type __b, iter_type __e, ios_base& __iob,
 ios_base::iostate& __err, unsigned long long& __v) const
 { return this->__do_get_unsigned ( __b, __e, __iob, __err, __v ); }

 virtual iter_type do_get(iter_type __b, iter_type __e, ios_base& __iob,
 ios_base::iostate& __err, float& __v) const
 { return this->__do_get_floating_point ( __b, __e, __iob, __err, __v ); }

 virtual iter_type do_get(iter_type __b, iter_type __e, ios_base& __iob,
 ios_base::iostate& __err, double& __v) const
 { return this->__do_get_floating_point ( __b, __e, __iob, __err, __v ); }

 virtual iter_type do_get(iter_type __b, iter_type __e, ios_base& __iob,
 ios_base::iostate& __err, long double& __v) const
 { return this->__do_get_floating_point ( __b, __e, __iob, __err, __v ); }

 virtual iter_type do_get(iter_type __b, iter_type __e, ios_base& __iob,
 ios_base::iostate& __err, void*& __v) const;
};

template <class _CharT, class _InputIterator>
locale::id
num_get<_CharT, _InputIterator>::id;

template <class _Tp>
_Tp
__num_get_signed_integral(const char* __a, const char* __a_end,
 ios_base::iostate& __err, int __base)
{
 if (__a != __a_end)
 {
 typename remove_reference<decltype(errno)>::type __save_errno = errno;
 errno = 0;
 char *__p2;
 long long __ll = strtoll_l(__a, &__p2, __base, _LIBCPP_GET_C_LOCALE);
 typename remove_reference<decltype(errno)>::type __current_errno = errno;
 if (__current_errno == 0)
 errno = __save_errno;
 if (__p2 != __a_end)
 {
 __err = ios_base::failbit;
 return 0;
 }
 else if (__current_errno == ERANGE ||
 __ll < numeric_limits<_Tp>::min() ||
 numeric_limits<_Tp>::max() < __ll)
 {
 __err = ios_base::failbit;
 if (__ll > 0)
 return numeric_limits<_Tp>::max();
 else
 return numeric_limits<_Tp>::min();
 }
 return static_cast<_Tp>(__ll);
 }
 __err = ios_base::failbit;
 return 0;
}

template <class _Tp>
_Tp
__num_get_unsigned_integral(const char* __a, const char* __a_end,
 ios_base::iostate& __err, int __base)
{
 if (__a != __a_end)
 {
 if (*__a == '-')
 {
 __err = ios_base::failbit;
 return 0;
 }
 typename remove_reference<decltype(errno)>::type __save_errno = errno;
 errno = 0;
 char *__p2;
 unsigned long long __ll = strtoull_l(__a, &__p2, __base, _LIBCPP_GET_C_LOCALE);
 typename remove_reference<decltype(errno)>::type __current_errno = errno;
 if (__current_errno == 0)
 errno = __save_errno;
 if (__p2 != __a_end)
 {
 __err = ios_base::failbit;
 return 0;
 }
 else if (__current_errno == ERANGE ||
 numeric_limits<_Tp>::max() < __ll)
 {
 __err = ios_base::failbit;
 return numeric_limits<_Tp>::max();
 }
 return static_cast<_Tp>(__ll);
 }
 __err = ios_base::failbit;
 return 0;
}

template <class _Tp>
_Tp
__num_get_float(const char* __a, const char* __a_end, ios_base::iostate& __err)
{
 if (__a != __a_end)
 {
 typename remove_reference<decltype(errno)>::type __save_errno = errno;
 errno = 0;
 char *__p2;
 long double __ld = strtold_l(__a, &__p2, _LIBCPP_GET_C_LOCALE);
 typename remove_reference<decltype(errno)>::type __current_errno = errno;
 if (__current_errno == 0)
 errno = __save_errno;
 if (__p2 != __a_end)
 {
 __err = ios_base::failbit;
 return 0;
 }
 else if (__current_errno == ERANGE)
 __err = ios_base::failbit;
 return static_cast<_Tp>(__ld);
 }
 __err = ios_base::failbit;
 return 0;
}

template <class _CharT, class _InputIterator>
_InputIterator
num_get<_CharT, _InputIterator>::do_get(iter_type __b, iter_type __e,
 ios_base& __iob,
 ios_base::iostate& __err,
 bool& __v) const
{
 if ((__iob.flags() & ios_base::boolalpha) == 0)
 {
 long __lv = -1;
 __b = do_get(__b, __e, __iob, __err, __lv);
 switch (__lv)
 {
 case 0:
 __v = false;
 break;
 case 1:
 __v = true;
 break;
 default:
 __v = true;
 __err = ios_base::failbit;
 break;
 }
 return __b;
 }
 const ctype<_CharT>& __ct = use_facet<ctype<_CharT> >(__iob.getloc());
 const numpunct<_CharT>& __np = use_facet<numpunct<_CharT> >(__iob.getloc());
 typedef typename numpunct<_CharT>::string_type string_type;
 const string_type __names[2] = {__np.truename(), __np.falsename()};
 const string_type* __i = __scan_keyword(__b, __e, __names, __names+2,
 __ct, __err);
 __v = __i == __names;
 return __b;
}

// signed

template <class _CharT, class _InputIterator>
template <class _Signed>
_InputIterator
num_get<_CharT, _InputIterator>::__do_get_signed(iter_type __b, iter_type __e,
 ios_base& __iob,
 ios_base::iostate& __err,
 _Signed& __v) const
{
 // Stage 1
 int __base = this->__get_base(__iob);
 // Stage 2
 char_type __atoms[26];
 char_type __thousands_sep;
 string __grouping = this->__stage2_int_prep(__iob, __atoms, __thousands_sep);
 string __buf;
 __buf.resize(__buf.capacity());
 char* __a = &__buf[0];
 char* __a_end = __a;
 unsigned __g[__num_get_base::__num_get_buf_sz];
 unsigned* __g_end = __g;
 unsigned __dc = 0;
 for (; __b != __e; ++__b)
 {
 if (__a_end == __a + __buf.size())
 {
 size_t __tmp = __buf.size();
 __buf.resize(2*__buf.size());
 __buf.resize(__buf.capacity());
 __a = &__buf[0];
 __a_end = __a + __tmp;
 }
 if (this->__stage2_int_loop(*__b, __base, __a, __a_end, __dc,
 __thousands_sep, __grouping, __g, __g_end,
 __atoms))
 break;
 }
 if (__grouping.size() != 0 && __g_end-__g < __num_get_base::__num_get_buf_sz)
 *__g_end++ = __dc;
 // Stage 3
 __v = __num_get_signed_integral<_Signed>(__a, __a_end, __err, __base);
 // Digit grouping checked
 __check_grouping(__grouping, __g, __g_end, __err);
 // EOF checked
 if (__b == __e)
 __err |= ios_base::eofbit;
 return __b;
}

// unsigned

template <class _CharT, class _InputIterator>
template <class _Unsigned>
_InputIterator
num_get<_CharT, _InputIterator>::__do_get_unsigned(iter_type __b, iter_type __e,
 ios_base& __iob,
 ios_base::iostate& __err,
 _Unsigned& __v) const
{
 // Stage 1
 int __base = this->__get_base(__iob);
 // Stage 2
 char_type __atoms[26];
 char_type __thousands_sep;
 string __grouping = this->__stage2_int_prep(__iob, __atoms, __thousands_sep);
 string __buf;
 __buf.resize(__buf.capacity());
 char* __a = &__buf[0];
 char* __a_end = __a;
 unsigned __g[__num_get_base::__num_get_buf_sz];
 unsigned* __g_end = __g;
 unsigned __dc = 0;
 for (; __b != __e; ++__b)
 {
 if (__a_end == __a + __buf.size())
 {
 size_t __tmp = __buf.size();
 __buf.resize(2*__buf.size());
 __buf.resize(__buf.capacity());
 __a = &__buf[0];
 __a_end = __a + __tmp;
 }
 if (this->__stage2_int_loop(*__b, __base, __a, __a_end, __dc,
 __thousands_sep, __grouping, __g, __g_end,
 __atoms))
 break;
 }
 if (__grouping.size() != 0 && __g_end-__g < __num_get_base::__num_get_buf_sz)
 *__g_end++ = __dc;
 // Stage 3
 __v = __num_get_unsigned_integral<_Unsigned>(__a, __a_end, __err, __base);
 // Digit grouping checked
 __check_grouping(__grouping, __g, __g_end, __err);
 // EOF checked
 if (__b == __e)
 __err |= ios_base::eofbit;
 return __b;
}

// floating point

template <class _CharT, class _InputIterator>
template <class _Fp>
_InputIterator
num_get<_CharT, _InputIterator>::__do_get_floating_point(iter_type __b, iter_type __e,
 ios_base& __iob,
 ios_base::iostate& __err,
 _Fp& __v) const
{
 // Stage 1, nothing to do
 // Stage 2
 char_type __atoms[32];
 char_type __decimal_point;
 char_type __thousands_sep;
 string __grouping = this->__stage2_float_prep(__iob, __atoms,
 __decimal_point,
 __thousands_sep);
 string __buf;
 __buf.resize(__buf.capacity());
 char* __a = &__buf[0];
 char* __a_end = __a;
 unsigned __g[__num_get_base::__num_get_buf_sz];
 unsigned* __g_end = __g;
 unsigned __dc = 0;
 bool __in_units = true;
 char __exp = 'E';
 for (; __b != __e; ++__b)
 {
 if (__a_end == __a + __buf.size())
 {
 size_t __tmp = __buf.size();
 __buf.resize(2*__buf.size());
 __buf.resize(__buf.capacity());
 __a = &__buf[0];
 __a_end = __a + __tmp;
 }
 if (this->__stage2_float_loop(*__b, __in_units, __exp, __a, __a_end,
 __decimal_point, __thousands_sep,
 __grouping, __g, __g_end,
 __dc, __atoms))
 break;
 }
 if (__grouping.size() != 0 && __in_units && __g_end-__g < __num_get_base::__num_get_buf_sz)
 *__g_end++ = __dc;
 // Stage 3
 __v = __num_get_float<_Fp>(__a, __a_end, __err);
 // Digit grouping checked
 __check_grouping(__grouping, __g, __g_end, __err);
 // EOF checked
 if (__b == __e)
 __err |= ios_base::eofbit;
 return __b;
}

template <class _CharT, class _InputIterator>
_InputIterator
num_get<_CharT, _InputIterator>::do_get(iter_type __b, iter_type __e,
 ios_base& __iob,
 ios_base::iostate& __err,
 void*& __v) const
{
 // Stage 1
 int __base = 16;
 // Stage 2
 char_type __atoms[26];
 char_type __thousands_sep = 0;
 string __grouping;
 use_facet<ctype<_CharT> >(__iob.getloc()).widen(__num_get_base::__src,
 __num_get_base::__src + 26, __atoms);
 string __buf;
 __buf.resize(__buf.capacity());
 char* __a = &__buf[0];
 char* __a_end = __a;
 unsigned __g[__num_get_base::__num_get_buf_sz];
 unsigned* __g_end = __g;
 unsigned __dc = 0;
 for (; __b != __e; ++__b)
 {
 if (__a_end == __a + __buf.size())
 {
 size_t __tmp = __buf.size();
 __buf.resize(2*__buf.size());
 __buf.resize(__buf.capacity());
 __a = &__buf[0];
 __a_end = __a + __tmp;
 }
 if (this->__stage2_int_loop(*__b, __base, __a, __a_end, __dc,
 __thousands_sep, __grouping,
 __g, __g_end, __atoms))
 break;
 }
 // Stage 3
 __a[sizeof(__a)-1] = 0;
#ifdef _LIBCPP_LOCALE__L_EXTENSIONS
 if (sscanf_l(__a, _LIBCPP_GET_C_LOCALE, "%p", &__v) != 1)
#else
 if (__sscanf_l(__a, __cloc(), "%p", &__v) != 1)
#endif
 __err = ios_base::failbit;
 // EOF checked
 if (__b == __e)
 __err |= ios_base::eofbit;
 return __b;
}

_LIBCPP_EXTERN_TEMPLATE2(class _LIBCPP_TYPE_VIS num_get<char>)
_LIBCPP_EXTERN_TEMPLATE2(class _LIBCPP_TYPE_VIS num_get<wchar_t>)

struct _LIBCPP_TYPE_VIS __num_put_base
{
protected:
 static void __format_int(char* __fmt, const char* __len, bool __signd,
 ios_base::fmtflags __flags);
 static bool __format_float(char* __fmt, const char* __len,
 ios_base::fmtflags __flags);
 static char* __identify_padding(char* __nb, char* __ne,
 const ios_base& __iob);
};

template <class _CharT>
struct __num_put
 : protected __num_put_base
{
 static void __widen_and_group_int(char* __nb, char* __np, char* __ne,
 _CharT* __ob, _CharT*& __op, _CharT*& __oe,
 const locale& __loc);
 static void __widen_and_group_float(char* __nb, char* __np, char* __ne,
 _CharT* __ob, _CharT*& __op, _CharT*& __oe,
 const locale& __loc);
};

template <class _CharT>
void
__num_put<_CharT>::__widen_and_group_int(char* __nb, char* __np, char* __ne,
 _CharT* __ob, _CharT*& __op, _CharT*& __oe,
 const locale& __loc)
{
 const ctype<_CharT>& __ct = use_facet<ctype<_CharT> > (__loc);
 const numpunct<_CharT>& __npt = use_facet<numpunct<_CharT> >(__loc);
 string __grouping = __npt.grouping();
 if (__grouping.empty())
 {
 __ct.widen(__nb, __ne, __ob);
 __oe = __ob + (__ne - __nb);
 }
 else
 {
 __oe = __ob;
 char* __nf = __nb;
 if (*__nf == '-' || *__nf == '+')
 *__oe++ = __ct.widen(*__nf++);
 if (__ne - __nf >= 2 && __nf[0] == '0' && (__nf[1] == 'x' ||
 __nf[1] == 'X'))
 {
 *__oe++ = __ct.widen(*__nf++);
 *__oe++ = __ct.widen(*__nf++);
 }
 reverse(__nf, __ne);
 _CharT __thousands_sep = __npt.thousands_sep();
 unsigned __dc = 0;
 unsigned __dg = 0;
 for (char* __p = __nf; __p < __ne; ++__p)
 {
 if (static_cast<unsigned>(__grouping[__dg]) > 0 &&
 __dc == static_cast<unsigned>(__grouping[__dg]))
 {
 *__oe++ = __thousands_sep;
 __dc = 0;
 if (__dg < __grouping.size()-1)
 ++__dg;
 }
 *__oe++ = __ct.widen(*__p);
 ++__dc;
 }
 reverse(__ob + (__nf - __nb), __oe);
 }
 if (__np == __ne)
 __op = __oe;
 else
 __op = __ob + (__np - __nb);
}

template <class _CharT>
void
__num_put<_CharT>::__widen_and_group_float(char* __nb, char* __np, char* __ne,
 _CharT* __ob, _CharT*& __op, _CharT*& __oe,
 const locale& __loc)
{
 const ctype<_CharT>& __ct = use_facet<ctype<_CharT> > (__loc);
 const numpunct<_CharT>& __npt = use_facet<numpunct<_CharT> >(__loc);
 string __grouping = __npt.grouping();
 __oe = __ob;
 char* __nf = __nb;
 if (*__nf == '-' || *__nf == '+')
 *__oe++ = __ct.widen(*__nf++);
 char* __ns;
 if (__ne - __nf >= 2 && __nf[0] == '0' && (__nf[1] == 'x' ||
 __nf[1] == 'X'))
 {
 *__oe++ = __ct.widen(*__nf++);
 *__oe++ = __ct.widen(*__nf++);
 for (__ns = __nf; __ns < __ne; ++__ns)
 if (!isxdigit_l(*__ns, _LIBCPP_GET_C_LOCALE))
 break;
 }
 else
 {
 for (__ns = __nf; __ns < __ne; ++__ns)
 if (!isdigit_l(*__ns, _LIBCPP_GET_C_LOCALE))
 break;
 }
 if (__grouping.empty())
 {
 __ct.widen(__nf, __ns, __oe);
 __oe += __ns - __nf;
 }
 else
 {
 reverse(__nf, __ns);
 _CharT __thousands_sep = __npt.thousands_sep();
 unsigned __dc = 0;
 unsigned __dg = 0;
 for (char* __p = __nf; __p < __ns; ++__p)
 {
 if (__grouping[__dg] > 0 && __dc == static_cast<unsigned>(__grouping[__dg]))
 {
 *__oe++ = __thousands_sep;
 __dc = 0;
 if (__dg < __grouping.size()-1)
 ++__dg;
 }
 *__oe++ = __ct.widen(*__p);
 ++__dc;
 }
 reverse(__ob + (__nf - __nb), __oe);
 }
 for (__nf = __ns; __nf < __ne; ++__nf)
 {
 if (*__nf == '.')
 {
 *__oe++ = __npt.decimal_point();
 ++__nf;
 break;
 }
 else
 *__oe++ = __ct.widen(*__nf);
 }
 __ct.widen(__nf, __ne, __oe);
 __oe += __ne - __nf;
 if (__np == __ne)
 __op = __oe;
 else
 __op = __ob + (__np - __nb);
}

_LIBCPP_EXTERN_TEMPLATE2(struct _LIBCPP_TYPE_VIS __num_put<char>)
_LIBCPP_EXTERN_TEMPLATE2(struct _LIBCPP_TYPE_VIS __num_put<wchar_t>)

template <class _CharT, class _OutputIterator = ostreambuf_iterator<_CharT> >
class _LIBCPP_TYPE_VIS_ONLY num_put
 : public locale::facet,
 private __num_put<_CharT>
{
public:
 typedef _CharT char_type;
 typedef _OutputIterator iter_type;

 _LIBCPP_ALWAYS_INLINE
 explicit num_put(size_t __refs = 0)
 : locale::facet(__refs) {}

 _LIBCPP_ALWAYS_INLINE
 iter_type put(iter_type __s, ios_base& __iob, char_type __fl,
 bool __v) const
 {
 return do_put(__s, __iob, __fl, __v);
 }

 _LIBCPP_ALWAYS_INLINE
 iter_type put(iter_type __s, ios_base& __iob, char_type __fl,
 long __v) const
 {
 return do_put(__s, __iob, __fl, __v);
 }

 _LIBCPP_ALWAYS_INLINE
 iter_type put(iter_type __s, ios_base& __iob, char_type __fl,
 long long __v) const
 {
 return do_put(__s, __iob, __fl, __v);
 }

 _LIBCPP_ALWAYS_INLINE
 iter_type put(iter_type __s, ios_base& __iob, char_type __fl,
 unsigned long __v) const
 {
 return do_put(__s, __iob, __fl, __v);
 }

 _LIBCPP_ALWAYS_INLINE
 iter_type put(iter_type __s, ios_base& __iob, char_type __fl,
 unsigned long long __v) const
 {
 return do_put(__s, __iob, __fl, __v);
 }

 _LIBCPP_ALWAYS_INLINE
 iter_type put(iter_type __s, ios_base& __iob, char_type __fl,
 double __v) const
 {
 return do_put(__s, __iob, __fl, __v);
 }

 _LIBCPP_ALWAYS_INLINE
 iter_type put(iter_type __s, ios_base& __iob, char_type __fl,
 long double __v) const
 {
 return do_put(__s, __iob, __fl, __v);
 }

 _LIBCPP_ALWAYS_INLINE
 iter_type put(iter_type __s, ios_base& __iob, char_type __fl,
 const void* __v) const
 {
 return do_put(__s, __iob, __fl, __v);
 }

 static locale::id id;

protected:
 _LIBCPP_ALWAYS_INLINE
 ~num_put() {}

 virtual iter_type do_put(iter_type __s, ios_base& __iob, char_type __fl,
 bool __v) const;
 virtual iter_type do_put(iter_type __s, ios_base& __iob, char_type __fl,
 long __v) const;
 virtual iter_type do_put(iter_type __s, ios_base& __iob, char_type __fl,
 long long __v) const;
 virtual iter_type do_put(iter_type __s, ios_base& __iob, char_type __fl,
 unsigned long) const;
 virtual iter_type do_put(iter_type __s, ios_base& __iob, char_type __fl,
 unsigned long long) const;
 virtual iter_type do_put(iter_type __s, ios_base& __iob, char_type __fl,
 double __v) const;
 virtual iter_type do_put(iter_type __s, ios_base& __iob, char_type __fl,
 long double __v) const;
 virtual iter_type do_put(iter_type __s, ios_base& __iob, char_type __fl,
 const void* __v) const;
};

template <class _CharT, class _OutputIterator>
locale::id
num_put<_CharT, _OutputIterator>::id;

template <class _CharT, class _OutputIterator>
_LIBCPP_HIDDEN
_OutputIterator
__pad_and_output(_OutputIterator __s,
 const _CharT* __ob, const _CharT* __op, const _CharT* __oe,
 ios_base& __iob, _CharT __fl)
{
 streamsize __sz = __oe - __ob;
 streamsize __ns = __iob.width();
 if (__ns > __sz)
 __ns -= __sz;
 else
 __ns = 0;
 for (;__ob < __op; ++__ob, ++__s)
 *__s = *__ob;
 for (; __ns; --__ns, ++__s)
 *__s = __fl;
 for (; __ob < __oe; ++__ob, ++__s)
 *__s = *__ob;
 __iob.width(0);
 return __s;
}

#if !defined(__APPLE__) || \
 (defined(__MAC_OS_X_VERSION_MIN_REQUIRED) && __MAC_OS_X_VERSION_MIN_REQUIRED > __MAC_10_8) || \
 (defined(__IPHONE_OS_VERSION_MIN_REQUIRED) && __IPHONE_OS_VERSION_MIN_REQUIRED > __IPHONE_6_0)

template <class _CharT, class _Traits>
_LIBCPP_HIDDEN
ostreambuf_iterator<_CharT, _Traits>
__pad_and_output(ostreambuf_iterator<_CharT, _Traits> __s,
 const _CharT* __ob, const _CharT* __op, const _CharT* __oe,
 ios_base& __iob, _CharT __fl)
{
 if (__s.__sbuf_ == nullptr)
 return __s;
 streamsize __sz = __oe - __ob;
 streamsize __ns = __iob.width();
 if (__ns > __sz)
 __ns -= __sz;
 else
 __ns = 0;
 streamsize __np = __op - __ob;
 if (__np > 0)
 {
 if (__s.__sbuf_->sputn(__ob, __np) != __np)
 {
 __s.__sbuf_ = nullptr;
 return __s;
 }
 }
 if (__ns > 0)
 {
 basic_string<_CharT, _Traits> __sp(__ns, __fl);
 if (__s.__sbuf_->sputn(__sp.data(), __ns) != __ns)
 {
 __s.__sbuf_ = nullptr;
 return __s;
 }
 }
 __np = __oe - __op;
 if (__np > 0)
 {
 if (__s.__sbuf_->sputn(__op, __np) != __np)
 {
 __s.__sbuf_ = nullptr;
 return __s;
 }
 }
 __iob.width(0);
 return __s;
}

#endif

template <class _CharT, class _OutputIterator>
_OutputIterator
num_put<_CharT, _OutputIterator>::do_put(iter_type __s, ios_base& __iob,
 char_type __fl, bool __v) const
{
 if ((__iob.flags() & ios_base::boolalpha) == 0)
 return do_put(__s, __iob, __fl, (unsigned long)__v);
 const numpunct<char_type>& __np = use_facet<numpunct<char_type> >(__iob.getloc());
 typedef typename numpunct<char_type>::string_type string_type;
#if _LIBCPP_DEBUG_LEVEL >= 2
 string_type __tmp(__v ? __np.truename() : __np.falsename());
 string_type __nm = _VSTD::move(__tmp);
#else
 string_type __nm = __v ? __np.truename() : __np.falsename();
#endif
 for (typename string_type::iterator __i = __nm.begin(); __i != __nm.end(); ++__i, ++__s)
 *__s = *__i;
 return __s;
}

template <class _CharT, class _OutputIterator>
_OutputIterator
num_put<_CharT, _OutputIterator>::do_put(iter_type __s, ios_base& __iob,
 char_type __fl, long __v) const
{
 // Stage 1 - Get number in narrow char
 char __fmt[6] = {'%', 0};
 const char* __len = "l";
 this->__format_int(__fmt+1, __len, true, __iob.flags());
 const unsigned __nbuf = (numeric_limits<long>::digits / 3)
 + ((numeric_limits<long>::digits % 3) != 0)
 + 1;
 char __nar[__nbuf];
#ifdef _LIBCPP_LOCALE__L_EXTENSIONS
 int __nc = snprintf_l(__nar, sizeof(__nar), _LIBCPP_GET_C_LOCALE, __fmt, __v);
#else
 int __nc = __snprintf_l(__nar, sizeof(__nar), __cloc(), __fmt, __v);
#endif
 char* __ne = __nar + __nc;
 char* __np = this->__identify_padding(__nar, __ne, __iob);
 // Stage 2 - Widen __nar while adding thousands separators
 char_type __o[2*(__nbuf-1) - 1];
 char_type* __op; // pad here
 char_type* __oe; // end of output
 this->__widen_and_group_int(__nar, __np, __ne, __o, __op, __oe, __iob.getloc());
 // [__o, __oe) contains thousands_sep'd wide number
 // Stage 3 & 4
 return __pad_and_output(__s, __o, __op, __oe, __iob, __fl);
}

template <class _CharT, class _OutputIterator>
_OutputIterator
num_put<_CharT, _OutputIterator>::do_put(iter_type __s, ios_base& __iob,
 char_type __fl, long long __v) const
{
 // Stage 1 - Get number in narrow char
 char __fmt[8] = {'%', 0};
 const char* __len = "ll";
 this->__format_int(__fmt+1, __len, true, __iob.flags());
 const unsigned __nbuf = (numeric_limits<long long>::digits / 3)
 + ((numeric_limits<long long>::digits % 3) != 0)
 + 1;
 char __nar[__nbuf];
#ifdef _LIBCPP_LOCALE__L_EXTENSIONS
 int __nc = snprintf_l(__nar, sizeof(__nar), _LIBCPP_GET_C_LOCALE, __fmt, __v);
#else
 int __nc = __snprintf_l(__nar, sizeof(__nar), __cloc(), __fmt, __v);
#endif
 char* __ne = __nar + __nc;
 char* __np = this->__identify_padding(__nar, __ne, __iob);
 // Stage 2 - Widen __nar while adding thousands separators
 char_type __o[2*(__nbuf-1) - 1];
 char_type* __op; // pad here
 char_type* __oe; // end of output
 this->__widen_and_group_int(__nar, __np, __ne, __o, __op, __oe, __iob.getloc());
 // [__o, __oe) contains thousands_sep'd wide number
 // Stage 3 & 4
 return __pad_and_output(__s, __o, __op, __oe, __iob, __fl);
}

template <class _CharT, class _OutputIterator>
_OutputIterator
num_put<_CharT, _OutputIterator>::do_put(iter_type __s, ios_base& __iob,
 char_type __fl, unsigned long __v) const
{
 // Stage 1 - Get number in narrow char
 char __fmt[6] = {'%', 0};
 const char* __len = "l";
 this->__format_int(__fmt+1, __len, false, __iob.flags());
 const unsigned __nbuf = (numeric_limits<unsigned long>::digits / 3)
 + ((numeric_limits<unsigned long>::digits % 3) != 0)
 + 1;
 char __nar[__nbuf];
#ifdef _LIBCPP_LOCALE__L_EXTENSIONS
 int __nc = snprintf_l(__nar, sizeof(__nar), _LIBCPP_GET_C_LOCALE, __fmt, __v);
#else
 int __nc = __snprintf_l(__nar, sizeof(__nar), __cloc(), __fmt, __v);
#endif
 char* __ne = __nar + __nc;
 char* __np = this->__identify_padding(__nar, __ne, __iob);
 // Stage 2 - Widen __nar while adding thousands separators
 char_type __o[2*(__nbuf-1) - 1];
 char_type* __op; // pad here
 char_type* __oe; // end of output
 this->__widen_and_group_int(__nar, __np, __ne, __o, __op, __oe, __iob.getloc());
 // [__o, __oe) contains thousands_sep'd wide number
 // Stage 3 & 4
 return __pad_and_output(__s, __o, __op, __oe, __iob, __fl);
}

template <class _CharT, class _OutputIterator>
_OutputIterator
num_put<_CharT, _OutputIterator>::do_put(iter_type __s, ios_base& __iob,
 char_type __fl, unsigned long long __v) const
{
 // Stage 1 - Get number in narrow char
 char __fmt[8] = {'%', 0};
 const char* __len = "ll";
 this->__format_int(__fmt+1, __len, false, __iob.flags());
 const unsigned __nbuf = (numeric_limits<unsigned long long>::digits / 3)
 + ((numeric_limits<unsigned long long>::digits % 3) != 0)
 + 1;
 char __nar[__nbuf];
#ifdef _LIBCPP_LOCALE__L_EXTENSIONS
 int __nc = snprintf_l(__nar, sizeof(__nar), _LIBCPP_GET_C_LOCALE, __fmt, __v);
#else
 int __nc = __snprintf_l(__nar, sizeof(__nar), __cloc(), __fmt, __v);
#endif
 char* __ne = __nar + __nc;
 char* __np = this->__identify_padding(__nar, __ne, __iob);
 // Stage 2 - Widen __nar while adding thousands separators
 char_type __o[2*(__nbuf-1) - 1];
 char_type* __op; // pad here
 char_type* __oe; // end of output
 this->__widen_and_group_int(__nar, __np, __ne, __o, __op, __oe, __iob.getloc());
 // [__o, __oe) contains thousands_sep'd wide number
 // Stage 3 & 4
 return __pad_and_output(__s, __o, __op, __oe, __iob, __fl);
}

template <class _CharT, class _OutputIterator>
_OutputIterator
num_put<_CharT, _OutputIterator>::do_put(iter_type __s, ios_base& __iob,
 char_type __fl, double __v) const
{
 // Stage 1 - Get number in narrow char
 char __fmt[8] = {'%', 0};
 const char* __len = "";
 bool __specify_precision = this->__format_float(__fmt+1, __len, __iob.flags());
 const unsigned __nbuf = 30;
 char __nar[__nbuf];
 char* __nb = __nar;
 int __nc;
 if (__specify_precision)
#ifdef _LIBCPP_LOCALE__L_EXTENSIONS
 __nc = snprintf_l(__nb, __nbuf, _LIBCPP_GET_C_LOCALE, __fmt,
 (int)__iob.precision(), __v);
#else
 __nc = __snprintf_l(__nb, __nbuf, __cloc(), __fmt,
 (int)__iob.precision(), __v);
#endif
 else
#ifdef _LIBCPP_LOCALE__L_EXTENSIONS
 __nc = snprintf_l(__nb, __nbuf, _LIBCPP_GET_C_LOCALE, __fmt, __v);
#else
 __nc = __snprintf_l(__nb, __nbuf, __cloc(), __fmt, __v);
#endif
 unique_ptr<char, void(*)(void*)> __nbh(0, free);
 if (__nc > static_cast<int>(__nbuf-1))
 {
 if (__specify_precision)
#ifdef _LIBCPP_LOCALE__L_EXTENSIONS
 __nc = asprintf_l(&__nb, _LIBCPP_GET_C_LOCALE, __fmt, (int)__iob.precision(), __v);
#else
 __nc = __asprintf_l(&__nb, __cloc(), __fmt,
 (int)__iob.precision(), __v);
#endif
 else
#ifdef _LIBCPP_LOCALE__L_EXTENSIONS
 __nc = asprintf_l(&__nb, _LIBCPP_GET_C_LOCALE, __fmt, __v);
#else
 __nc = __asprintf_l(&__nb, __cloc(), __fmt, (int)__iob.precision(), __v);
#endif
 if (__nb == 0)
 __throw_bad_alloc();
 __nbh.reset(__nb);
 }
 char* __ne = __nb + __nc;
 char* __np = this->__identify_padding(__nb, __ne, __iob);
 // Stage 2 - Widen __nar while adding thousands separators
 char_type __o[2*(__nbuf-1) - 1];
 char_type* __ob = __o;
 unique_ptr<char_type, void(*)(void*)> __obh(0, free);
 if (__nb != __nar)
 {
 __ob = (char_type*)malloc(2*static_cast<size_t>(__nc)*sizeof(char_type));
 if (__ob == 0)
 __throw_bad_alloc();
 __obh.reset(__ob);
 }
 char_type* __op; // pad here
 char_type* __oe; // end of output
 this->__widen_and_group_float(__nb, __np, __ne, __ob, __op, __oe, __iob.getloc());
 // [__o, __oe) contains thousands_sep'd wide number
 // Stage 3 & 4
 __s = __pad_and_output(__s, __ob, __op, __oe, __iob, __fl);
 return __s;
}

template <class _CharT, class _OutputIterator>
_OutputIterator
num_put<_CharT, _OutputIterator>::do_put(iter_type __s, ios_base& __iob,
 char_type __fl, long double __v) const
{
 // Stage 1 - Get number in narrow char
 char __fmt[8] = {'%', 0};
 const char* __len = "L";
 bool __specify_precision = this->__format_float(__fmt+1, __len, __iob.flags());
 const unsigned __nbuf = 30;
 char __nar[__nbuf];
 char* __nb = __nar;
 int __nc;
 if (__specify_precision)
#ifdef _LIBCPP_LOCALE__L_EXTENSIONS
 __nc = snprintf_l(__nb, __nbuf, _LIBCPP_GET_C_LOCALE, __fmt,
 (int)__iob.precision(), __v);
#else
 __nc = __snprintf_l(__nb, __nbuf, __cloc(), __fmt,
 (int)__iob.precision(), __v);
#endif
 else
#ifdef _LIBCPP_LOCALE__L_EXTENSIONS
 __nc = snprintf_l(__nb, __nbuf, _LIBCPP_GET_C_LOCALE, __fmt, __v);
#else
 __nc = __snprintf_l(__nb, __nbuf, __cloc(), __fmt, __v);
#endif
 unique_ptr<char, void(*)(void*)> __nbh(0, free);
 if (__nc > static_cast<int>(__nbuf-1))
 {
 if (__specify_precision)
#ifdef _LIBCPP_LOCALE__L_EXTENSIONS
 __nc = asprintf_l(&__nb, _LIBCPP_GET_C_LOCALE, __fmt, (int)__iob.precision(), __v);
#else
 __nc = __asprintf_l(&__nb, __cloc(), __fmt,
 (int)__iob.precision(), __v);
#endif
 else
#ifdef _LIBCPP_LOCALE__L_EXTENSIONS
 __nc = asprintf_l(&__nb, _LIBCPP_GET_C_LOCALE, __fmt, __v);
#else
 __nc = __asprintf_l(&__nb, __cloc(), __fmt, __v);
#endif
 if (__nb == 0)
 __throw_bad_alloc();
 __nbh.reset(__nb);
 }
 char* __ne = __nb + __nc;
 char* __np = this->__identify_padding(__nb, __ne, __iob);
 // Stage 2 - Widen __nar while adding thousands separators
 char_type __o[2*(__nbuf-1) - 1];
 char_type* __ob = __o;
 unique_ptr<char_type, void(*)(void*)> __obh(0, free);
 if (__nb != __nar)
 {
 __ob = (char_type*)malloc(2*static_cast<size_t>(__nc)*sizeof(char_type));
 if (__ob == 0)
 __throw_bad_alloc();
 __obh.reset(__ob);
 }
 char_type* __op; // pad here
 char_type* __oe; // end of output
 this->__widen_and_group_float(__nb, __np, __ne, __ob, __op, __oe, __iob.getloc());
 // [__o, __oe) contains thousands_sep'd wide number
 // Stage 3 & 4
 __s = __pad_and_output(__s, __ob, __op, __oe, __iob, __fl);
 return __s;
}

template <class _CharT, class _OutputIterator>
_OutputIterator
num_put<_CharT, _OutputIterator>::do_put(iter_type __s, ios_base& __iob,
 char_type __fl, const void* __v) const
{
 // Stage 1 - Get pointer in narrow char
 char __fmt[6] = "%p";
 const unsigned __nbuf = 20;
 char __nar[__nbuf];
#ifdef _LIBCPP_LOCALE__L_EXTENSIONS
 int __nc = snprintf_l(__nar, sizeof(__nar), _LIBCPP_GET_C_LOCALE, __fmt, __v);
#else
 int __nc = __snprintf_l(__nar, sizeof(__nar), __cloc(), __fmt, __v);
#endif
 char* __ne = __nar + __nc;
 char* __np = this->__identify_padding(__nar, __ne, __iob);
 // Stage 2 - Widen __nar
 char_type __o[2*(__nbuf-1) - 1];
 char_type* __op; // pad here
 char_type* __oe; // end of output
 const ctype<char_type>& __ct = use_facet<ctype<char_type> >(__iob.getloc());
 __ct.widen(__nar, __ne, __o);
 __oe = __o + (__ne - __nar);
 if (__np == __ne)
 __op = __oe;
 else
 __op = __o + (__np - __nar);
 // [__o, __oe) contains wide number
 // Stage 3 & 4
 return __pad_and_output(__s, __o, __op, __oe, __iob, __fl);
}

_LIBCPP_EXTERN_TEMPLATE2(class _LIBCPP_TYPE_VIS num_put<char>)
_LIBCPP_EXTERN_TEMPLATE2(class _LIBCPP_TYPE_VIS num_put<wchar_t>)

template <class _CharT, class _InputIterator>
_LIBCPP_HIDDEN
int
__get_up_to_n_digits(_InputIterator& __b, _InputIterator __e,
 ios_base::iostate& __err, const ctype<_CharT>& __ct, int __n)
{
 // Precondition: __n >= 1
 if (__b == __e)
 {
 __err |= ios_base::eofbit | ios_base::failbit;
 return 0;
 }
 // get first digit
 _CharT __c = *__b;
 if (!__ct.is(ctype_base::digit, __c))
 {
 __err |= ios_base::failbit;
 return 0;
 }
 int __r = __ct.narrow(__c, 0) - '0';
 for (++__b, --__n; __b != __e && __n > 0; ++__b, --__n)
 {
 // get next digit
 __c = *__b;
 if (!__ct.is(ctype_base::digit, __c))
 return __r;
 __r = __r * 10 + __ct.narrow(__c, 0) - '0';
 }
 if (__b == __e)
 __err |= ios_base::eofbit;
 return __r;
}

class _LIBCPP_TYPE_VIS time_base
{
public:
 enum dateorder {no_order, dmy, mdy, ymd, ydm};
};

template <class _CharT>
class _LIBCPP_TYPE_VIS __time_get_c_storage
{
protected:
 typedef basic_string<_CharT> string_type;

 virtual const string_type* __weeks() const;
 virtual const string_type* __months() const;
 virtual const string_type* __am_pm() const;
 virtual const string_type& __c() const;
 virtual const string_type& __r() const;
 virtual const string_type& __x() const;
 virtual const string_type& __X() const;
};

template <class _CharT, class _InputIterator = istreambuf_iterator<_CharT> >
class _LIBCPP_TYPE_VIS_ONLY time_get
 : public locale::facet,
 public time_base,
 private __time_get_c_storage<_CharT>
{
public:
 typedef _CharT char_type;
 typedef _InputIterator iter_type;
 typedef time_base::dateorder dateorder;
 typedef basic_string<char_type> string_type;

 _LIBCPP_ALWAYS_INLINE
 explicit time_get(size_t __refs = 0)
 : locale::facet(__refs) {}

 _LIBCPP_ALWAYS_INLINE
 dateorder date_order() const
 {
 return this->do_date_order();
 }

 _LIBCPP_ALWAYS_INLINE
 iter_type get_time(iter_type __b, iter_type __e, ios_base& __iob,
 ios_base::iostate& __err, tm* __tm) const
 {
 return do_get_time(__b, __e, __iob, __err, __tm);
 }

 _LIBCPP_ALWAYS_INLINE
 iter_type get_date(iter_type __b, iter_type __e, ios_base& __iob,
 ios_base::iostate& __err, tm* __tm) const
 {
 return do_get_date(__b, __e, __iob, __err, __tm);
 }

 _LIBCPP_ALWAYS_INLINE
 iter_type get_weekday(iter_type __b, iter_type __e, ios_base& __iob,
 ios_base::iostate& __err, tm* __tm) const
 {
 return do_get_weekday(__b, __e, __iob, __err, __tm);
 }

 _LIBCPP_ALWAYS_INLINE
 iter_type get_monthname(iter_type __b, iter_type __e, ios_base& __iob,
 ios_base::iostate& __err, tm* __tm) const
 {
 return do_get_monthname(__b, __e, __iob, __err, __tm);
 }

 _LIBCPP_ALWAYS_INLINE
 iter_type get_year(iter_type __b, iter_type __e, ios_base& __iob,
 ios_base::iostate& __err, tm* __tm) const
 {
 return do_get_year(__b, __e, __iob, __err, __tm);
 }

 _LIBCPP_ALWAYS_INLINE
 iter_type get(iter_type __b, iter_type __e, ios_base& __iob,
 ios_base::iostate& __err, tm *__tm,
 char __fmt, char __mod = 0) const
 {
 return do_get(__b, __e, __iob, __err, __tm, __fmt, __mod);
 }

 iter_type get(iter_type __b, iter_type __e, ios_base& __iob,
 ios_base::iostate& __err, tm* __tm,
 const char_type* __fmtb, const char_type* __fmte) const;

 static locale::id id;

protected:
 _LIBCPP_ALWAYS_INLINE
 ~time_get() {}

 virtual dateorder do_date_order() const;
 virtual iter_type do_get_time(iter_type __b, iter_type __e, ios_base& __iob,
 ios_base::iostate& __err, tm* __tm) const;
 virtual iter_type do_get_date(iter_type __b, iter_type __e, ios_base& __iob,
 ios_base::iostate& __err, tm* __tm) const;
 virtual iter_type do_get_weekday(iter_type __b, iter_type __e, ios_base& __iob,
 ios_base::iostate& __err, tm* __tm) const;
 virtual iter_type do_get_monthname(iter_type __b, iter_type __e, ios_base& __iob,
 ios_base::iostate& __err, tm* __tm) const;
 virtual iter_type do_get_year(iter_type __b, iter_type __e, ios_base& __iob,
 ios_base::iostate& __err, tm* __tm) const;
 virtual iter_type do_get(iter_type __b, iter_type __e, ios_base& __iob,
 ios_base::iostate& __err, tm* __tm,
 char __fmt, char __mod) const;
private:
 void __get_white_space(iter_type& __b, iter_type __e,
 ios_base::iostate& __err, const ctype<char_type>& __ct) const;
 void __get_percent(iter_type& __b, iter_type __e, ios_base::iostate& __err,
 const ctype<char_type>& __ct) const;

 void __get_weekdayname(int& __m,
 iter_type& __b, iter_type __e,
 ios_base::iostate& __err,
 const ctype<char_type>& __ct) const;
 void __get_monthname(int& __m,
 iter_type& __b, iter_type __e,
 ios_base::iostate& __err,
 const ctype<char_type>& __ct) const;
 void __get_day(int& __d,
 iter_type& __b, iter_type __e,
 ios_base::iostate& __err,
 const ctype<char_type>& __ct) const;
 void __get_month(int& __m,
 iter_type& __b, iter_type __e,
 ios_base::iostate& __err,
 const ctype<char_type>& __ct) const;
 void __get_year(int& __y,
 iter_type& __b, iter_type __e,
 ios_base::iostate& __err,
 const ctype<char_type>& __ct) const;
 void __get_year4(int& __y,
 iter_type& __b, iter_type __e,
 ios_base::iostate& __err,
 const ctype<char_type>& __ct) const;
 void __get_hour(int& __d,
 iter_type& __b, iter_type __e,
 ios_base::iostate& __err,
 const ctype<char_type>& __ct) const;
 void __get_12_hour(int& __h,
 iter_type& __b, iter_type __e,
 ios_base::iostate& __err,
 const ctype<char_type>& __ct) const;
 void __get_am_pm(int& __h,
 iter_type& __b, iter_type __e,
 ios_base::iostate& __err,
 const ctype<char_type>& __ct) const;
 void __get_minute(int& __m,
 iter_type& __b, iter_type __e,
 ios_base::iostate& __err,
 const ctype<char_type>& __ct) const;
 void __get_second(int& __s,
 iter_type& __b, iter_type __e,
 ios_base::iostate& __err,
 const ctype<char_type>& __ct) const;
 void __get_weekday(int& __w,
 iter_type& __b, iter_type __e,
 ios_base::iostate& __err,
 const ctype<char_type>& __ct) const;
 void __get_day_year_num(int& __w,
 iter_type& __b, iter_type __e,
 ios_base::iostate& __err,
 const ctype<char_type>& __ct) const;
};

template <class _CharT, class _InputIterator>
locale::id
time_get<_CharT, _InputIterator>::id;

// time_get primatives

template <class _CharT, class _InputIterator>
void
time_get<_CharT, _InputIterator>::__get_weekdayname(int& __w,
 iter_type& __b, iter_type __e,
 ios_base::iostate& __err,
 const ctype<char_type>& __ct) const
{
 // Note: ignoring case comes from the POSIX strptime spec
 const string_type* __wk = this->__weeks();
 ptrdiff_t __i = __scan_keyword(__b, __e, __wk, __wk+14, __ct, __err, false) - __wk;
 if (__i < 14)
 __w = __i % 7;
}

template <class _CharT, class _InputIterator>
void
time_get<_CharT, _InputIterator>::__get_monthname(int& __m,
 iter_type& __b, iter_type __e,
 ios_base::iostate& __err,
 const ctype<char_type>& __ct) const
{
 // Note: ignoring case comes from the POSIX strptime spec
 const string_type* __month = this->__months();
 ptrdiff_t __i = __scan_keyword(__b, __e, __month, __month+24, __ct, __err, false) - __month;
 if (__i < 24)
 __m = __i % 12;
}

template <class _CharT, class _InputIterator>
void
time_get<_CharT, _InputIterator>::__get_day(int& __d,
 iter_type& __b, iter_type __e,
 ios_base::iostate& __err,
 const ctype<char_type>& __ct) const
{
 int __t = __get_up_to_n_digits(__b, __e, __err, __ct, 2);
 if (!(__err & ios_base::failbit) && 1 <= __t && __t <= 31)
 __d = __t;
 else
 __err |= ios_base::failbit;
}

template <class _CharT, class _InputIterator>
void
time_get<_CharT, _InputIterator>::__get_month(int& __m,
 iter_type& __b, iter_type __e,
 ios_base::iostate& __err,
 const ctype<char_type>& __ct) const
{
 int __t = __get_up_to_n_digits(__b, __e, __err, __ct, 2) - 1;
 if (!(__err & ios_base::failbit) && __t <= 11)
 __m = __t;
 else
 __err |= ios_base::failbit;
}

template <class _CharT, class _InputIterator>
void
time_get<_CharT, _InputIterator>::__get_year(int& __y,
 iter_type& __b, iter_type __e,
 ios_base::iostate& __err,
 const ctype<char_type>& __ct) const
{
 int __t = __get_up_to_n_digits(__b, __e, __err, __ct, 4);
 if (!(__err & ios_base::failbit))
 {
 if (__t < 69)
 __t += 2000;
 else if (69 <= __t && __t <= 99)
 __t += 1900;
 __y = __t - 1900;
 }
}

template <class _CharT, class _InputIterator>
void
time_get<_CharT, _InputIterator>::__get_year4(int& __y,
 iter_type& __b, iter_type __e,
 ios_base::iostate& __err,
 const ctype<char_type>& __ct) const
{
 int __t = __get_up_to_n_digits(__b, __e, __err, __ct, 4);
 if (!(__err & ios_base::failbit))
 __y = __t - 1900;
}

template <class _CharT, class _InputIterator>
void
time_get<_CharT, _InputIterator>::__get_hour(int& __h,
 iter_type& __b, iter_type __e,
 ios_base::iostate& __err,
 const ctype<char_type>& __ct) const
{
 int __t = __get_up_to_n_digits(__b, __e, __err, __ct, 2);
 if (!(__err & ios_base::failbit) && __t <= 23)
 __h = __t;
 else
 __err |= ios_base::failbit;
}

template <class _CharT, class _InputIterator>
void
time_get<_CharT, _InputIterator>::__get_12_hour(int& __h,
 iter_type& __b, iter_type __e,
 ios_base::iostate& __err,
 const ctype<char_type>& __ct) const
{
 int __t = __get_up_to_n_digits(__b, __e, __err, __ct, 2);
 if (!(__err & ios_base::failbit) && 1 <= __t && __t <= 12)
 __h = __t;
 else
 __err |= ios_base::failbit;
}

template <class _CharT, class _InputIterator>
void
time_get<_CharT, _InputIterator>::__get_minute(int& __m,
 iter_type& __b, iter_type __e,
 ios_base::iostate& __err,
 const ctype<char_type>& __ct) const
{
 int __t = __get_up_to_n_digits(__b, __e, __err, __ct, 2);
 if (!(__err & ios_base::failbit) && __t <= 59)
 __m = __t;
 else
 __err |= ios_base::failbit;
}

template <class _CharT, class _InputIterator>
void
time_get<_CharT, _InputIterator>::__get_second(int& __s,
 iter_type& __b, iter_type __e,
 ios_base::iostate& __err,
 const ctype<char_type>& __ct) const
{
 int __t = __get_up_to_n_digits(__b, __e, __err, __ct, 2);
 if (!(__err & ios_base::failbit) && __t <= 60)
 __s = __t;
 else
 __err |= ios_base::failbit;
}

template <class _CharT, class _InputIterator>
void
time_get<_CharT, _InputIterator>::__get_weekday(int& __w,
 iter_type& __b, iter_type __e,
 ios_base::iostate& __err,
 const ctype<char_type>& __ct) const
{
 int __t = __get_up_to_n_digits(__b, __e, __err, __ct, 1);
 if (!(__err & ios_base::failbit) && __t <= 6)
 __w = __t;
 else
 __err |= ios_base::failbit;
}

template <class _CharT, class _InputIterator>
void
time_get<_CharT, _InputIterator>::__get_day_year_num(int& __d,
 iter_type& __b, iter_type __e,
 ios_base::iostate& __err,
 const ctype<char_type>& __ct) const
{
 int __t = __get_up_to_n_digits(__b, __e, __err, __ct, 3);
 if (!(__err & ios_base::failbit) && __t <= 365)
 __d = __t;
 else
 __err |= ios_base::failbit;
}

template <class _CharT, class _InputIterator>
void
time_get<_CharT, _InputIterator>::__get_white_space(iter_type& __b, iter_type __e,
 ios_base::iostate& __err,
 const ctype<char_type>& __ct) const
{
 for (; __b != __e && __ct.is(ctype_base::space, *__b); ++__b)
 ;
 if (__b == __e)
 __err |= ios_base::eofbit;
}

template <class _CharT, class _InputIterator>
void
time_get<_CharT, _InputIterator>::__get_am_pm(int& __h,
 iter_type& __b, iter_type __e,
 ios_base::iostate& __err,
 const ctype<char_type>& __ct) const
{
 const string_type* __ap = this->__am_pm();
 if (__ap[0].size() + __ap[1].size() == 0)
 {
 __err |= ios_base::failbit;
 return;
 }
 ptrdiff_t __i = __scan_keyword(__b, __e, __ap, __ap+2, __ct, __err, false) - __ap;
 if (__i == 0 && __h == 12)
 __h = 0;
 else if (__i == 1 && __h < 12)
 __h += 12;
}

template <class _CharT, class _InputIterator>
void
time_get<_CharT, _InputIterator>::__get_percent(iter_type& __b, iter_type __e,
 ios_base::iostate& __err,
 const ctype<char_type>& __ct) const
{
 if (__b == __e)
 {
 __err |= ios_base::eofbit | ios_base::failbit;
 return;
 }
 if (__ct.narrow(*__b, 0) != '%')
 __err |= ios_base::failbit;
 else if(++__b == __e)
 __err |= ios_base::eofbit;
}

// time_get end primatives

template <class _CharT, class _InputIterator>
_InputIterator
time_get<_CharT, _InputIterator>::get(iter_type __b, iter_type __e,
 ios_base& __iob,
 ios_base::iostate& __err, tm* __tm,
 const char_type* __fmtb, const char_type* __fmte) const
{
 const ctype<char_type>& __ct = use_facet<ctype<char_type> >(__iob.getloc());
 __err = ios_base::goodbit;
 while (__fmtb != __fmte && __err == ios_base::goodbit)
 {
 if (__b == __e)
 {
 __err = ios_base::failbit;
 break;
 }
 if (__ct.narrow(*__fmtb, 0) == '%')
 {
 if (++__fmtb == __fmte)
 {
 __err = ios_base::failbit;
 break;
 }
 char __cmd = __ct.narrow(*__fmtb, 0);
 char __opt = '\0';
 if (__cmd == 'E' || __cmd == '0')
 {
 if (++__fmtb == __fmte)
 {
 __err = ios_base::failbit;
 break;
 }
 __opt = __cmd;
 __cmd = __ct.narrow(*__fmtb, 0);
 }
 __b = do_get(__b, __e, __iob, __err, __tm, __cmd, __opt);
 ++__fmtb;
 }
 else if (__ct.is(ctype_base::space, *__fmtb))
 {
 for (++__fmtb; __fmtb != __fmte && __ct.is(ctype_base::space, *__fmtb); ++__fmtb)
 ;
 for ( ; __b != __e && __ct.is(ctype_base::space, *__b); ++__b)
 ;
 }
 else if (__ct.toupper(*__b) == __ct.toupper(*__fmtb))
 {
 ++__b;
 ++__fmtb;
 }
 else
 __err = ios_base::failbit;
 }
 if (__b == __e)
 __err |= ios_base::eofbit;
 return __b;
}

template <class _CharT, class _InputIterator>
typename time_get<_CharT, _InputIterator>::dateorder
time_get<_CharT, _InputIterator>::do_date_order() const
{
 return mdy;
}

template <class _CharT, class _InputIterator>
_InputIterator
time_get<_CharT, _InputIterator>::do_get_time(iter_type __b, iter_type __e,
 ios_base& __iob,
 ios_base::iostate& __err,
 tm* __tm) const
{
 const char_type __fmt[] = {'%', 'H', ':', '%', 'M', ':', '%', 'S'};
 return get(__b, __e, __iob, __err, __tm, __fmt, __fmt + sizeof(__fmt)/sizeof(__fmt[0]));
}

template <class _CharT, class _InputIterator>
_InputIterator
time_get<_CharT, _InputIterator>::do_get_date(iter_type __b, iter_type __e,
 ios_base& __iob,
 ios_base::iostate& __err,
 tm* __tm) const
{
 const string_type& __fmt = this->__x();
 return get(__b, __e, __iob, __err, __tm, __fmt.data(), __fmt.data() + __fmt.size());
}

template <class _CharT, class _InputIterator>
_InputIterator
time_get<_CharT, _InputIterator>::do_get_weekday(iter_type __b, iter_type __e,
 ios_base& __iob,
 ios_base::iostate& __err,
 tm* __tm) const
{
 const ctype<char_type>& __ct = use_facet<ctype<char_type> >(__iob.getloc());
 __get_weekdayname(__tm->tm_wday, __b, __e, __err, __ct);
 return __b;
}

template <class _CharT, class _InputIterator>
_InputIterator
time_get<_CharT, _InputIterator>::do_get_monthname(iter_type __b, iter_type __e,
 ios_base& __iob,
 ios_base::iostate& __err,
 tm* __tm) const
{
 const ctype<char_type>& __ct = use_facet<ctype<char_type> >(__iob.getloc());
 __get_monthname(__tm->tm_mon, __b, __e, __err, __ct);
 return __b;
}

template <class _CharT, class _InputIterator>
_InputIterator
time_get<_CharT, _InputIterator>::do_get_year(iter_type __b, iter_type __e,
 ios_base& __iob,
 ios_base::iostate& __err,
 tm* __tm) const
{
 const ctype<char_type>& __ct = use_facet<ctype<char_type> >(__iob.getloc());
 __get_year(__tm->tm_year, __b, __e, __err, __ct);
 return __b;
}

template <class _CharT, class _InputIterator>
_InputIterator
time_get<_CharT, _InputIterator>::do_get(iter_type __b, iter_type __e,
 ios_base& __iob,
 ios_base::iostate& __err, tm* __tm,
 char __fmt, char) const
{
 __err = ios_base::goodbit;
 const ctype<char_type>& __ct = use_facet<ctype<char_type> >(__iob.getloc());
 switch (__fmt)
 {
 case 'a':
 case 'A':
 __get_weekdayname(__tm->tm_wday, __b, __e, __err, __ct);
 break;
 case 'b':
 case 'B':
 case 'h':
 __get_monthname(__tm->tm_mon, __b, __e, __err, __ct);
 break;
 case 'c':
 {
 const string_type& __fm = this->__c();
 __b = get(__b, __e, __iob, __err, __tm, __fm.data(), __fm.data() + __fm.size());
 }
 break;
 case 'd':
 case 'e':
 __get_day(__tm->tm_mday, __b, __e, __err, __ct);
 break;
 case 'D':
 {
 const char_type __fm[] = {'%', 'm', '/', '%', 'd', '/', '%', 'y'};
 __b = get(__b, __e, __iob, __err, __tm, __fm, __fm + sizeof(__fm)/sizeof(__fm[0]));
 }
 break;
 case 'F':
 {
 const char_type __fm[] = {'%', 'Y', '-', '%', 'm', '-', '%', 'd'};
 __b = get(__b, __e, __iob, __err, __tm, __fm, __fm + sizeof(__fm)/sizeof(__fm[0]));
 }
 break;
 case 'H':
 __get_hour(__tm->tm_hour, __b, __e, __err, __ct);
 break;
 case 'I':
 __get_12_hour(__tm->tm_hour, __b, __e, __err, __ct);
 break;
 case 'j':
 __get_day_year_num(__tm->tm_yday, __b, __e, __err, __ct);
 break;
 case 'm':
 __get_month(__tm->tm_mon, __b, __e, __err, __ct);
 break;
 case 'M':
 __get_minute(__tm->tm_min, __b, __e, __err, __ct);
 break;
 case 'n':
 case 't':
 __get_white_space(__b, __e, __err, __ct);
 break;
 case 'p':
 __get_am_pm(__tm->tm_hour, __b, __e, __err, __ct);
 break;
 case 'r':
 {
 const char_type __fm[] = {'%', 'I', ':', '%', 'M', ':', '%', 'S', ' ', '%', 'p'};
 __b = get(__b, __e, __iob, __err, __tm, __fm, __fm + sizeof(__fm)/sizeof(__fm[0]));
 }
 break;
 case 'R':
 {
 const char_type __fm[] = {'%', 'H', ':', '%', 'M'};
 __b = get(__b, __e, __iob, __err, __tm, __fm, __fm + sizeof(__fm)/sizeof(__fm[0]));
 }
 break;
 case 'S':
 __get_second(__tm->tm_sec, __b, __e, __err, __ct);
 break;
 case 'T':
 {
 const char_type __fm[] = {'%', 'H', ':', '%', 'M', ':', '%', 'S'};
 __b = get(__b, __e, __iob, __err, __tm, __fm, __fm + sizeof(__fm)/sizeof(__fm[0]));
 }
 break;
 case 'w':
 __get_weekday(__tm->tm_wday, __b, __e, __err, __ct);
 break;
 case 'x':
 return do_get_date(__b, __e, __iob, __err, __tm);
 case 'X':
 {
 const string_type& __fm = this->__X();
 __b = get(__b, __e, __iob, __err, __tm, __fm.data(), __fm.data() + __fm.size());
 }
 break;
 case 'y':
 __get_year(__tm->tm_year, __b, __e, __err, __ct);
 break;
 case 'Y':
 __get_year4(__tm->tm_year, __b, __e, __err, __ct);
 break;
 case '%':
 __get_percent(__b, __e, __err, __ct);
 break;
 default:
 __err |= ios_base::failbit;
 }
 return __b;
}

_LIBCPP_EXTERN_TEMPLATE2(class _LIBCPP_TYPE_VIS time_get<char>)
_LIBCPP_EXTERN_TEMPLATE2(class _LIBCPP_TYPE_VIS time_get<wchar_t>)

class _LIBCPP_TYPE_VIS __time_get
{
protected:
 locale_t __loc_;

 __time_get(const char* __nm);
 __time_get(const string& __nm);
 ~__time_get();
};

template <class _CharT>
class _LIBCPP_TYPE_VIS __time_get_storage
 : public __time_get
{
protected:
 typedef basic_string<_CharT> string_type;

 string_type __weeks_[14];
 string_type __months_[24];
 string_type __am_pm_[2];
 string_type __c_;
 string_type __r_;
 string_type __x_;
 string_type __X_;

 explicit __time_get_storage(const char* __nm);
 explicit __time_get_storage(const string& __nm);

 _LIBCPP_ALWAYS_INLINE ~__time_get_storage() {}

 time_base::dateorder __do_date_order() const;

private:
 void init(const ctype<_CharT>&);
 string_type __analyze(char __fmt, const ctype<_CharT>&);
};

template <class _CharT, class _InputIterator = istreambuf_iterator<_CharT> >
class _LIBCPP_TYPE_VIS_ONLY time_get_byname
 : public time_get<_CharT, _InputIterator>,
 private __time_get_storage<_CharT>
{
public:
 typedef time_base::dateorder dateorder;
 typedef _InputIterator iter_type;
 typedef _CharT char_type;
 typedef basic_string<char_type> string_type;

 _LIBCPP_INLINE_VISIBILITY
 explicit time_get_byname(const char* __nm, size_t __refs = 0)
 : time_get<_CharT, _InputIterator>(__refs),
 __time_get_storage<_CharT>(__nm) {}
 _LIBCPP_INLINE_VISIBILITY
 explicit time_get_byname(const string& __nm, size_t __refs = 0)
 : time_get<_CharT, _InputIterator>(__refs),
 __time_get_storage<_CharT>(__nm) {}

protected:
 _LIBCPP_INLINE_VISIBILITY
 ~time_get_byname() {}

 _LIBCPP_INLINE_VISIBILITY
 virtual dateorder do_date_order() const {return this->__do_date_order();}
private:
 _LIBCPP_INLINE_VISIBILITY
 virtual const string_type* __weeks() const {return this->__weeks_;}
 _LIBCPP_INLINE_VISIBILITY
 virtual const string_type* __months() const {return this->__months_;}
 _LIBCPP_INLINE_VISIBILITY
 virtual const string_type* __am_pm() const {return this->__am_pm_;}
 _LIBCPP_INLINE_VISIBILITY
 virtual const string_type& __c() const {return this->__c_;}
 _LIBCPP_INLINE_VISIBILITY
 virtual const string_type& __r() const {return this->__r_;}
 _LIBCPP_INLINE_VISIBILITY
 virtual const string_type& __x() const {return this->__x_;}
 _LIBCPP_INLINE_VISIBILITY
 virtual const string_type& __X() const {return this->__X_;}
};

_LIBCPP_EXTERN_TEMPLATE2(class _LIBCPP_TYPE_VIS time_get_byname<char>)
_LIBCPP_EXTERN_TEMPLATE2(class _LIBCPP_TYPE_VIS time_get_byname<wchar_t>)

class _LIBCPP_TYPE_VIS __time_put
{
 locale_t __loc_;
protected:
 _LIBCPP_ALWAYS_INLINE __time_put() : __loc_(_LIBCPP_GET_C_LOCALE) {}
 __time_put(const char* __nm);
 __time_put(const string& __nm);
 ~__time_put();
 void __do_put(char* __nb, char*& __ne, const tm* __tm,
 char __fmt, char __mod) const;
 void __do_put(wchar_t* __wb, wchar_t*& __we, const tm* __tm,
 char __fmt, char __mod) const;
};

template <class _CharT, class _OutputIterator = ostreambuf_iterator<_CharT> >
class _LIBCPP_TYPE_VIS_ONLY time_put
 : public locale::facet,
 private __time_put
{
public:
 typedef _CharT char_type;
 typedef _OutputIterator iter_type;

 _LIBCPP_ALWAYS_INLINE
 explicit time_put(size_t __refs = 0)
 : locale::facet(__refs) {}

 iter_type put(iter_type __s, ios_base& __iob, char_type __fl, const tm* __tm,
 const char_type* __pb, const char_type* __pe) const;

 _LIBCPP_ALWAYS_INLINE
 iter_type put(iter_type __s, ios_base& __iob, char_type __fl,
 const tm* __tm, char __fmt, char __mod = 0) const
 {
 return do_put(__s, __iob, __fl, __tm, __fmt, __mod);
 }

 static locale::id id;

protected:
 _LIBCPP_ALWAYS_INLINE
 ~time_put() {}
 virtual iter_type do_put(iter_type __s, ios_base&, char_type, const tm* __tm,
 char __fmt, char __mod) const;

 _LIBCPP_ALWAYS_INLINE
 explicit time_put(const char* __nm, size_t __refs)
 : locale::facet(__refs),
 __time_put(__nm) {}
 _LIBCPP_ALWAYS_INLINE
 explicit time_put(const string& __nm, size_t __refs)
 : locale::facet(__refs),
 __time_put(__nm) {}
};

template <class _CharT, class _OutputIterator>
locale::id
time_put<_CharT, _OutputIterator>::id;

template <class _CharT, class _OutputIterator>
_OutputIterator
time_put<_CharT, _OutputIterator>::put(iter_type __s, ios_base& __iob,
 char_type __fl, const tm* __tm,
 const char_type* __pb,
 const char_type* __pe) const
{
 const ctype<char_type>& __ct = use_facet<ctype<char_type> >(__iob.getloc());
 for (; __pb != __pe; ++__pb)
 {
 if (__ct.narrow(*__pb, 0) == '%')
 {
 if (++__pb == __pe)
 {
 *__s++ = __pb[-1];
 break;
 }
 char __mod = 0;
 char __fmt = __ct.narrow(*__pb, 0);
 if (__fmt == 'E' || __fmt == 'O')
 {
 if (++__pb == __pe)
 {
 *__s++ = __pb[-2];
 *__s++ = __pb[-1];
 break;
 }
 __mod = __fmt;
 __fmt = __ct.narrow(*__pb, 0);
 }
 __s = do_put(__s, __iob, __fl, __tm, __fmt, __mod);
 }
 else
 *__s++ = *__pb;
 }
 return __s;
}

template <class _CharT, class _OutputIterator>
_OutputIterator
time_put<_CharT, _OutputIterator>::do_put(iter_type __s, ios_base&,
 char_type, const tm* __tm,
 char __fmt, char __mod) const
{
 char_type __nar[100];
 char_type* __nb = __nar;
 char_type* __ne = __nb + 100;
 __do_put(__nb, __ne, __tm, __fmt, __mod);
 return _VSTD::copy(__nb, __ne, __s);
}

_LIBCPP_EXTERN_TEMPLATE2(class _LIBCPP_TYPE_VIS time_put<char>)
_LIBCPP_EXTERN_TEMPLATE2(class _LIBCPP_TYPE_VIS time_put<wchar_t>)

template <class _CharT, class _OutputIterator = ostreambuf_iterator<_CharT> >
class _LIBCPP_TYPE_VIS_ONLY time_put_byname
 : public time_put<_CharT, _OutputIterator>
{
public:
 _LIBCPP_ALWAYS_INLINE
 explicit time_put_byname(const char* __nm, size_t __refs = 0)
 : time_put<_CharT, _OutputIterator>(__nm, __refs) {}

 _LIBCPP_ALWAYS_INLINE
 explicit time_put_byname(const string& __nm, size_t __refs = 0)
 : time_put<_CharT, _OutputIterator>(__nm, __refs) {}

protected:
 _LIBCPP_ALWAYS_INLINE
 ~time_put_byname() {}
};

_LIBCPP_EXTERN_TEMPLATE2(class _LIBCPP_TYPE_VIS time_put_byname<char>)
_LIBCPP_EXTERN_TEMPLATE2(class _LIBCPP_TYPE_VIS time_put_byname<wchar_t>)

// money_base

class _LIBCPP_TYPE_VIS money_base
{
public:
 enum part {none, space, symbol, sign, value};
 struct pattern {char field[4];};

 _LIBCPP_ALWAYS_INLINE money_base() {}
};

// moneypunct

template <class _CharT, bool _International = false>
class _LIBCPP_TYPE_VIS_ONLY moneypunct
 : public locale::facet,
 public money_base
{
public:
 typedef _CharT char_type;
 typedef basic_string<char_type> string_type;

 _LIBCPP_ALWAYS_INLINE
 explicit moneypunct(size_t __refs = 0)
 : locale::facet(__refs) {}

 _LIBCPP_ALWAYS_INLINE char_type decimal_point() const {return do_decimal_point();}
 _LIBCPP_ALWAYS_INLINE char_type thousands_sep() const {return do_thousands_sep();}
 _LIBCPP_ALWAYS_INLINE string grouping() const {return do_grouping();}
 _LIBCPP_ALWAYS_INLINE string_type curr_symbol() const {return do_curr_symbol();}
 _LIBCPP_ALWAYS_INLINE string_type positive_sign() const {return do_positive_sign();}
 _LIBCPP_ALWAYS_INLINE string_type negative_sign() const {return do_negative_sign();}
 _LIBCPP_ALWAYS_INLINE int frac_digits() const {return do_frac_digits();}
 _LIBCPP_ALWAYS_INLINE pattern pos_format() const {return do_pos_format();}
 _LIBCPP_ALWAYS_INLINE pattern neg_format() const {return do_neg_format();}

 static locale::id id;
 static const bool intl = _International;

protected:
 _LIBCPP_ALWAYS_INLINE
 ~moneypunct() {}

 virtual char_type do_decimal_point() const {return numeric_limits<char_type>::max();}
 virtual char_type do_thousands_sep() const {return numeric_limits<char_type>::max();}
 virtual string do_grouping() const {return string();}
 virtual string_type do_curr_symbol() const {return string_type();}
 virtual string_type do_positive_sign() const {return string_type();}
 virtual string_type do_negative_sign() const {return string_type(1, '-');}
 virtual int do_frac_digits() const {return 0;}
 virtual pattern do_pos_format() const
 {pattern __p = {{symbol, sign, none, value}}; return __p;}
 virtual pattern do_neg_format() const
 {pattern __p = {{symbol, sign, none, value}}; return __p;}
};

template <class _CharT, bool _International>
locale::id
moneypunct<_CharT, _International>::id;

template <class _CharT, bool _International>
const bool
moneypunct<_CharT, _International>::intl;

_LIBCPP_EXTERN_TEMPLATE2(class _LIBCPP_TYPE_VIS moneypunct<char, false>)
_LIBCPP_EXTERN_TEMPLATE2(class _LIBCPP_TYPE_VIS moneypunct<char, true>)
_LIBCPP_EXTERN_TEMPLATE2(class _LIBCPP_TYPE_VIS moneypunct<wchar_t, false>)
_LIBCPP_EXTERN_TEMPLATE2(class _LIBCPP_TYPE_VIS moneypunct<wchar_t, true>)

// moneypunct_byname

template <class _CharT, bool _International = false>
class _LIBCPP_TYPE_VIS_ONLY moneypunct_byname
 : public moneypunct<_CharT, _International>
{
public:
 typedef money_base::pattern pattern;
 typedef _CharT char_type;
 typedef basic_string<char_type> string_type;

 _LIBCPP_ALWAYS_INLINE
 explicit moneypunct_byname(const char* __nm, size_t __refs = 0)
 : moneypunct<_CharT, _International>(__refs) {init(__nm);}

 _LIBCPP_ALWAYS_INLINE
 explicit moneypunct_byname(const string& __nm, size_t __refs = 0)
 : moneypunct<_CharT, _International>(__refs) {init(__nm.c_str());}

protected:
 _LIBCPP_ALWAYS_INLINE
 ~moneypunct_byname() {}

 virtual char_type do_decimal_point() const {return __decimal_point_;}
 virtual char_type do_thousands_sep() const {return __thousands_sep_;}
 virtual string do_grouping() const {return __grouping_;}
 virtual string_type do_curr_symbol() const {return __curr_symbol_;}
 virtual string_type do_positive_sign() const {return __positive_sign_;}
 virtual string_type do_negative_sign() const {return __negative_sign_;}
 virtual int do_frac_digits() const {return __frac_digits_;}
 virtual pattern do_pos_format() const {return __pos_format_;}
 virtual pattern do_neg_format() const {return __neg_format_;}

private:
 char_type __decimal_point_;
 char_type __thousands_sep_;
 string __grouping_;
 string_type __curr_symbol_;
 string_type __positive_sign_;
 string_type __negative_sign_;
 int __frac_digits_;
 pattern __pos_format_;
 pattern __neg_format_;

 void init(const char*);
};

template<> void moneypunct_byname<char, false>::init(const char*);
template<> void moneypunct_byname<char, true>::init(const char*);
template<> void moneypunct_byname<wchar_t, false>::init(const char*);
template<> void moneypunct_byname<wchar_t, true>::init(const char*);

_LIBCPP_EXTERN_TEMPLATE2(class _LIBCPP_TYPE_VIS moneypunct_byname<char, false>)
_LIBCPP_EXTERN_TEMPLATE2(class _LIBCPP_TYPE_VIS moneypunct_byname<char, true>)
_LIBCPP_EXTERN_TEMPLATE2(class _LIBCPP_TYPE_VIS moneypunct_byname<wchar_t, false>)
_LIBCPP_EXTERN_TEMPLATE2(class _LIBCPP_TYPE_VIS moneypunct_byname<wchar_t, true>)

// money_get

template <class _CharT>
class __money_get
{
protected:
 typedef _CharT char_type;
 typedef basic_string<char_type> string_type;

 _LIBCPP_ALWAYS_INLINE __money_get() {}

 static void __gather_info(bool __intl, const locale& __loc,
 money_base::pattern& __pat, char_type& __dp,
 char_type& __ts, string& __grp,
 string_type& __sym, string_type& __psn,
 string_type& __nsn, int& __fd);
};

template <class _CharT>
void
__money_get<_CharT>::__gather_info(bool __intl, const locale& __loc,
 money_base::pattern& __pat, char_type& __dp,
 char_type& __ts, string& __grp,
 string_type& __sym, string_type& __psn,
 string_type& __nsn, int& __fd)
{
 if (__intl)
 {
 const moneypunct<char_type, true>& __mp =
 use_facet<moneypunct<char_type, true> >(__loc);
 __pat = __mp.neg_format();
 __nsn = __mp.negative_sign();
 __psn = __mp.positive_sign();
 __dp = __mp.decimal_point();
 __ts = __mp.thousands_sep();
 __grp = __mp.grouping();
 __sym = __mp.curr_symbol();
 __fd = __mp.frac_digits();
 }
 else
 {
 const moneypunct<char_type, false>& __mp =
 use_facet<moneypunct<char_type, false> >(__loc);
 __pat = __mp.neg_format();
 __nsn = __mp.negative_sign();
 __psn = __mp.positive_sign();
 __dp = __mp.decimal_point();
 __ts = __mp.thousands_sep();
 __grp = __mp.grouping();
 __sym = __mp.curr_symbol();
 __fd = __mp.frac_digits();
 }
}

_LIBCPP_EXTERN_TEMPLATE2(class _LIBCPP_TYPE_VIS __money_get<char>)
_LIBCPP_EXTERN_TEMPLATE2(class _LIBCPP_TYPE_VIS __money_get<wchar_t>)

template <class _CharT, class _InputIterator = istreambuf_iterator<_CharT> >
class _LIBCPP_TYPE_VIS_ONLY money_get
 : public locale::facet,
 private __money_get<_CharT>
{
public:
 typedef _CharT char_type;
 typedef _InputIterator iter_type;
 typedef basic_string<char_type> string_type;

 _LIBCPP_ALWAYS_INLINE
 explicit money_get(size_t __refs = 0)
 : locale::facet(__refs) {}

 _LIBCPP_ALWAYS_INLINE
 iter_type get(iter_type __b, iter_type __e, bool __intl, ios_base& __iob,
 ios_base::iostate& __err, long double& __v) const
 {
 return do_get(__b, __e, __intl, __iob, __err, __v);
 }

 _LIBCPP_ALWAYS_INLINE
 iter_type get(iter_type __b, iter_type __e, bool __intl, ios_base& __iob,
 ios_base::iostate& __err, string_type& __v) const
 {
 return do_get(__b, __e, __intl, __iob, __err, __v);
 }

 static locale::id id;

protected:

 _LIBCPP_ALWAYS_INLINE
 ~money_get() {}

 virtual iter_type do_get(iter_type __b, iter_type __e, bool __intl,
 ios_base& __iob, ios_base::iostate& __err,
 long double& __v) const;
 virtual iter_type do_get(iter_type __b, iter_type __e, bool __intl,
 ios_base& __iob, ios_base::iostate& __err,
 string_type& __v) const;

private:
 static bool __do_get(iter_type& __b, iter_type __e,
 bool __intl, const locale& __loc,
 ios_base::fmtflags __flags, ios_base::iostate& __err,
 bool& __neg, const ctype<char_type>& __ct,
 unique_ptr<char_type, void(*)(void*)>& __wb,
 char_type*& __wn, char_type* __we);
};

template <class _CharT, class _InputIterator>
locale::id
money_get<_CharT, _InputIterator>::id;

_LIBCPP_FUNC_VIS void __do_nothing(void*);

template <class _Tp>
_LIBCPP_HIDDEN
void
__double_or_nothing(unique_ptr<_Tp, void(*)(void*)>& __b, _Tp*& __n, _Tp*& __e)
{
 bool __owns = __b.get_deleter() != __do_nothing;
 size_t __cur_cap = static_cast<size_t>(__e-__b.get()) * sizeof(_Tp);
 size_t __new_cap = __cur_cap < numeric_limits<size_t>::max() / 2 ?
 2 * __cur_cap : numeric_limits<size_t>::max();
 size_t __n_off = static_cast<size_t>(__n - __b.get());
 _Tp* __t = (_Tp*)realloc(__owns ? __b.get() : 0, __new_cap);
 if (__t == 0)
 __throw_bad_alloc();
 if (__owns)
 __b.release();
 __b = unique_ptr<_Tp, void(*)(void*)>(__t, free);
 __new_cap /= sizeof(_Tp);
 __n = __b.get() + __n_off;
 __e = __b.get() + __new_cap;
}

// true == success
template <class _CharT, class _InputIterator>
bool
money_get<_CharT, _InputIterator>::__do_get(iter_type& __b, iter_type __e,
 bool __intl, const locale& __loc,
 ios_base::fmtflags __flags,
 ios_base::iostate& __err,
 bool& __neg,
 const ctype<char_type>& __ct,
 unique_ptr<char_type, void(*)(void*)>& __wb,
 char_type*& __wn, char_type* __we)
{
 const unsigned __bz = 100;
 unsigned __gbuf[__bz];
 unique_ptr<unsigned, void(*)(void*)> __gb(__gbuf, __do_nothing);
 unsigned* __gn = __gb.get();
 unsigned* __ge = __gn + __bz;
 money_base::pattern __pat;
 char_type __dp;
 char_type __ts;
 string __grp;
 string_type __sym;
 string_type __psn;
 string_type __nsn;
 // Capture the spaces read into money_base::{space,none} so they
 // can be compared to initial spaces in __sym.
 string_type __spaces;
 int __fd;
 __money_get<_CharT>::__gather_info(__intl, __loc, __pat, __dp, __ts, __grp,
 __sym, __psn, __nsn, __fd);
 const string_type* __trailing_sign = 0;
 __wn = __wb.get();
 for (unsigned __p = 0; __p < 4 && __b != __e; ++__p)
 {
 switch (__pat.field[__p])
 {
 case money_base::space:
 if (__p != 3)
 {
 if (__ct.is(ctype_base::space, *__b))
 __spaces.push_back(*__b++);
 else
 {
 __err |= ios_base::failbit;
 return false;
 }
 }
 // drop through
 case money_base::none:
 if (__p != 3)
 {
 while (__b != __e && __ct.is(ctype_base::space, *__b))
 __spaces.push_back(*__b++);
 }
 break;
 case money_base::sign:
 if (__psn.size() + __nsn.size() > 0)
 {
 if (__psn.size() == 0 || __nsn.size() == 0)
 { // sign is optional
 if (__psn.size() > 0)
 { // __nsn.size() == 0
 if (*__b == __psn[0])
 {
 ++__b;
 if (__psn.size() > 1)
 __trailing_sign = &__psn;
 }
 else
 __neg = true;
 }
 else if (*__b == __nsn[0]) // __nsn.size() > 0 && __psn.size() == 0
 {
 ++__b;
 __neg = true;
 if (__nsn.size() > 1)
 __trailing_sign = &__nsn;
 }
 }
 else // sign is required
 {
 if (*__b == __psn[0])
 {
 ++__b;
 if (__psn.size() > 1)
 __trailing_sign = &__psn;
 }
 else if (*__b == __nsn[0])
 {
 ++__b;
 __neg = true;
 if (__nsn.size() > 1)
 __trailing_sign = &__nsn;
 }
 else
 {
 __err |= ios_base::failbit;
 return false;
 }
 }
 }
 break;
 case money_base::symbol:
 {
 bool __more_needed = __trailing_sign ||
 (__p < 2) ||
 (__p == 2 && __pat.field[3] != static_cast<char>(money_base::none));
 bool __sb = (__flags & ios_base::showbase) != 0;
 if (__sb || __more_needed)
 {
 typename string_type::const_iterator __sym_space_end = __sym.begin();
 if (__p > 0 && (__pat.field[__p - 1] == money_base::none ||
 __pat.field[__p - 1] == money_base::space)) {
 // Match spaces we've already read against spaces at
 // the beginning of __sym.
 while (__sym_space_end != __sym.end() &&
 __ct.is(ctype_base::space, *__sym_space_end))
 ++__sym_space_end;
 const size_t __num_spaces = __sym_space_end - __sym.begin();
 if (__num_spaces > __spaces.size() ||
 !equal(__spaces.end() - __num_spaces, __spaces.end(),
 __sym.begin())) {
 // No match. Put __sym_space_end back at the
 // beginning of __sym, which will prevent a
 // match in the next loop.
 __sym_space_end = __sym.begin();
 }
 }
 typename string_type::const_iterator __sym_curr_char = __sym_space_end;
 while (__sym_curr_char != __sym.end() && __b != __e &&
 *__b == *__sym_curr_char) {
 ++__b;
 ++__sym_curr_char;
 }
 if (__sb && __sym_curr_char != __sym.end())
 {
 __err |= ios_base::failbit;
 return false;
 }
 }
 }
 break;
 case money_base::value:
 {
 unsigned __ng = 0;
 for (; __b != __e; ++__b)
 {
 char_type __c = *__b;
 if (__ct.is(ctype_base::digit, __c))
 {
 if (__wn == __we)
 __double_or_nothing(__wb, __wn, __we);
 *__wn++ = __c;
 ++__ng;
 }
 else if (__grp.size() > 0 && __ng > 0 && __c == __ts)
 {
 if (__gn == __ge)
 __double_or_nothing(__gb, __gn, __ge);
 *__gn++ = __ng;
 __ng = 0;
 }
 else
 break;
 }
 if (__gb.get() != __gn && __ng > 0)
 {
 if (__gn == __ge)
 __double_or_nothing(__gb, __gn, __ge);
 *__gn++ = __ng;
 }
 if (__fd > 0)
 {
 if (__b == __e || *__b != __dp)
 {
 __err |= ios_base::failbit;
 return false;
 }
 for (++__b; __fd > 0; --__fd, ++__b)
 {
 if (__b == __e || !__ct.is(ctype_base::digit, *__b))
 {
 __err |= ios_base::failbit;
 return false;
 }
 if (__wn == __we)
 __double_or_nothing(__wb, __wn, __we);
 *__wn++ = *__b;
 }
 }
 if (__wn == __wb.get())
 {
 __err |= ios_base::failbit;
 return false;
 }
 }
 break;
 }
 }
 if (__trailing_sign)
 {
 for (unsigned __i = 1; __i < __trailing_sign->size(); ++__i, ++__b)
 {
 if (__b == __e || *__b != (*__trailing_sign)[__i])
 {
 __err |= ios_base::failbit;
 return false;
 }
 }
 }
 if (__gb.get() != __gn)
 {
 ios_base::iostate __et = ios_base::goodbit;
 __check_grouping(__grp, __gb.get(), __gn, __et);
 if (__et)
 {
 __err |= ios_base::failbit;
 return false;
 }
 }
 return true;
}

template <class _CharT, class _InputIterator>
_InputIterator
money_get<_CharT, _InputIterator>::do_get(iter_type __b, iter_type __e,
 bool __intl, ios_base& __iob,
 ios_base::iostate& __err,
 long double& __v) const
{
 const int __bz = 100;
 char_type __wbuf[__bz];
 unique_ptr<char_type, void(*)(void*)> __wb(__wbuf, __do_nothing);
 char_type* __wn;
 char_type* __we = __wbuf + __bz;
 locale __loc = __iob.getloc();
 const ctype<char_type>& __ct = use_facet<ctype<char_type> >(__loc);
 bool __neg = false;
 if (__do_get(__b, __e, __intl, __loc, __iob.flags(), __err, __neg, __ct,
 __wb, __wn, __we))
 {
 const char __src[] = "0123456789";
 char_type __atoms[sizeof(__src)-1];
 __ct.widen(__src, __src + (sizeof(__src)-1), __atoms);
 char __nbuf[__bz];
 char* __nc = __nbuf;
 unique_ptr<char, void(*)(void*)> __h(0, free);
 if (__wn - __wb.get() > __bz-2)
 {
 __h.reset((char*)malloc(static_cast<size_t>(__wn - __wb.get() + 2)));
 if (__h.get() == 0)
 __throw_bad_alloc();
 __nc = __h.get();
 }
 if (__neg)
 *__nc++ = '-';
 for (const char_type* __w = __wb.get(); __w < __wn; ++__w, ++__nc)
 *__nc = __src[find(__atoms, _VSTD::end(__atoms), *__w) - __atoms];
 *__nc = char();
 if (sscanf(__nbuf, "%Lf", &__v) != 1)
 __throw_runtime_error("money_get error");
 }
 if (__b == __e)
 __err |= ios_base::eofbit;
 return __b;
}

template <class _CharT, class _InputIterator>
_InputIterator
money_get<_CharT, _InputIterator>::do_get(iter_type __b, iter_type __e,
 bool __intl, ios_base& __iob,
 ios_base::iostate& __err,
 string_type& __v) const
{
 const int __bz = 100;
 char_type __wbuf[__bz];
 unique_ptr<char_type, void(*)(void*)> __wb(__wbuf, __do_nothing);
 char_type* __wn;
 char_type* __we = __wbuf + __bz;
 locale __loc = __iob.getloc();
 const ctype<char_type>& __ct = use_facet<ctype<char_type> >(__loc);
 bool __neg = false;
 if (__do_get(__b, __e, __intl, __loc, __iob.flags(), __err, __neg, __ct,
 __wb, __wn, __we))
 {
 __v.clear();
 if (__neg)
 __v.push_back(__ct.widen('-'));
 char_type __z = __ct.widen('0');
 char_type* __w;
 for (__w = __wb.get(); __w < __wn-1; ++__w)
 if (*__w != __z)
 break;
 __v.append(__w, __wn);
 }
 if (__b == __e)
 __err |= ios_base::eofbit;
 return __b;
}

_LIBCPP_EXTERN_TEMPLATE2(class _LIBCPP_TYPE_VIS money_get<char>)
_LIBCPP_EXTERN_TEMPLATE2(class _LIBCPP_TYPE_VIS money_get<wchar_t>)

// money_put

template <class _CharT>
class __money_put
{
protected:
 typedef _CharT char_type;
 typedef basic_string<char_type> string_type;

 _LIBCPP_ALWAYS_INLINE __money_put() {}

 static void __gather_info(bool __intl, bool __neg, const locale& __loc,
 money_base::pattern& __pat, char_type& __dp,
 char_type& __ts, string& __grp,
 string_type& __sym, string_type& __sn,
 int& __fd);
 static void __format(char_type* __mb, char_type*& __mi, char_type*& __me,
 ios_base::fmtflags __flags,
 const char_type* __db, const char_type* __de,
 const ctype<char_type>& __ct, bool __neg,
 const money_base::pattern& __pat, char_type __dp,
 char_type __ts, const string& __grp,
 const string_type& __sym, const string_type& __sn,
 int __fd);
};

template <class _CharT>
void
__money_put<_CharT>::__gather_info(bool __intl, bool __neg, const locale& __loc,
 money_base::pattern& __pat, char_type& __dp,
 char_type& __ts, string& __grp,
 string_type& __sym, string_type& __sn,
 int& __fd)
{
 if (__intl)
 {
 const moneypunct<char_type, true>& __mp =
 use_facet<moneypunct<char_type, true> >(__loc);
 if (__neg)
 {
 __pat = __mp.neg_format();
 __sn = __mp.negative_sign();
 }
 else
 {
 __pat = __mp.pos_format();
 __sn = __mp.positive_sign();
 }
 __dp = __mp.decimal_point();
 __ts = __mp.thousands_sep();
 __grp = __mp.grouping();
 __sym = __mp.curr_symbol();
 __fd = __mp.frac_digits();
 }
 else
 {
 const moneypunct<char_type, false>& __mp =
 use_facet<moneypunct<char_type, false> >(__loc);
 if (__neg)
 {
 __pat = __mp.neg_format();
 __sn = __mp.negative_sign();
 }
 else
 {
 __pat = __mp.pos_format();
 __sn = __mp.positive_sign();
 }
 __dp = __mp.decimal_point();
 __ts = __mp.thousands_sep();
 __grp = __mp.grouping();
 __sym = __mp.curr_symbol();
 __fd = __mp.frac_digits();
 }
}

template <class _CharT>
void
__money_put<_CharT>::__format(char_type* __mb, char_type*& __mi, char_type*& __me,
 ios_base::fmtflags __flags,
 const char_type* __db, const char_type* __de,
 const ctype<char_type>& __ct, bool __neg,
 const money_base::pattern& __pat, char_type __dp,
 char_type __ts, const string& __grp,
 const string_type& __sym, const string_type& __sn,
 int __fd)
{
 __me = __mb;
 for (unsigned __p = 0; __p < 4; ++__p)
 {
 switch (__pat.field[__p])
 {
 case money_base::none:
 __mi = __me;
 break;
 case money_base::space:
 __mi = __me;
 *__me++ = __ct.widen(' ');
 break;
 case money_base::sign:
 if (!__sn.empty())
 *__me++ = __sn[0];
 break;
 case money_base::symbol:
 if (!__sym.empty() && (__flags & ios_base::showbase))
 __me = _VSTD::copy(__sym.begin(), __sym.end(), __me);
 break;
 case money_base::value:
 {
 // remember start of value so we can reverse it
 char_type* __t = __me;
 // find beginning of digits
 if (__neg)
 ++__db;
 // find end of digits
 const char_type* __d;
 for (__d = __db; __d < __de; ++__d)
 if (!__ct.is(ctype_base::digit, *__d))
 break;
 // print fractional part
 if (__fd > 0)
 {
 int __f;
 for (__f = __fd; __d > __db && __f > 0; --__f)
 *__me++ = *--__d;
 char_type __z = __f > 0 ? __ct.widen('0') : char_type();
 for (; __f > 0; --__f)
 *__me++ = __z;
 *__me++ = __dp;
 }
 // print units part
 if (__d == __db)
 {
 *__me++ = __ct.widen('0');
 }
 else
 {
 unsigned __ng = 0;
 unsigned __ig = 0;
 unsigned __gl = __grp.empty() ? numeric_limits<unsigned>::max()
 : static_cast<unsigned>(__grp[__ig]);
 while (__d != __db)
 {
 if (__ng == __gl)
 {
 *__me++ = __ts;
 __ng = 0;
 if (++__ig < __grp.size())
 __gl = __grp[__ig] == numeric_limits<char>::max() ?
 numeric_limits<unsigned>::max() :
 static_cast<unsigned>(__grp[__ig]);
 }
 *__me++ = *--__d;
 ++__ng;
 }
 }
 // reverse it
 reverse(__t, __me);
 }
 break;
 }
 }
 // print rest of sign, if any
 if (__sn.size() > 1)
 __me = _VSTD::copy(__sn.begin()+1, __sn.end(), __me);
 // set alignment
 if ((__flags & ios_base::adjustfield) == ios_base::left)
 __mi = __me;
 else if ((__flags & ios_base::adjustfield) != ios_base::internal)
 __mi = __mb;
}

_LIBCPP_EXTERN_TEMPLATE2(class _LIBCPP_TYPE_VIS __money_put<char>)
_LIBCPP_EXTERN_TEMPLATE2(class _LIBCPP_TYPE_VIS __money_put<wchar_t>)

template <class _CharT, class _OutputIterator = ostreambuf_iterator<_CharT> >
class _LIBCPP_TYPE_VIS_ONLY money_put
 : public locale::facet,
 private __money_put<_CharT>
{
public:
 typedef _CharT char_type;
 typedef _OutputIterator iter_type;
 typedef basic_string<char_type> string_type;

 _LIBCPP_ALWAYS_INLINE
 explicit money_put(size_t __refs = 0)
 : locale::facet(__refs) {}

 _LIBCPP_ALWAYS_INLINE
 iter_type put(iter_type __s, bool __intl, ios_base& __iob, char_type __fl,
 long double __units) const
 {
 return do_put(__s, __intl, __iob, __fl, __units);
 }

 _LIBCPP_ALWAYS_INLINE
 iter_type put(iter_type __s, bool __intl, ios_base& __iob, char_type __fl,
 const string_type& __digits) const
 {
 return do_put(__s, __intl, __iob, __fl, __digits);
 }

 static locale::id id;

protected:
 _LIBCPP_ALWAYS_INLINE
 ~money_put() {}

 virtual iter_type do_put(iter_type __s, bool __intl, ios_base& __iob,
 char_type __fl, long double __units) const;
 virtual iter_type do_put(iter_type __s, bool __intl, ios_base& __iob,
 char_type __fl, const string_type& __digits) const;
};

template <class _CharT, class _OutputIterator>
locale::id
money_put<_CharT, _OutputIterator>::id;

template <class _CharT, class _OutputIterator>
_OutputIterator
money_put<_CharT, _OutputIterator>::do_put(iter_type __s, bool __intl,
 ios_base& __iob, char_type __fl,
 long double __units) const
{
 // convert to char
 const size_t __bs = 100;
 char __buf[__bs];
 char* __bb = __buf;
 char_type __digits[__bs];
 char_type* __db = __digits;
 size_t __n = static_cast<size_t>(snprintf(__bb, __bs, "%.0Lf", __units));
 unique_ptr<char, void(*)(void*)> __hn(0, free);
 unique_ptr<char_type, void(*)(void*)> __hd(0, free);
 // secure memory for digit storage
 if (__n > __bs-1)
 {
#ifdef _LIBCPP_LOCALE__L_EXTENSIONS
 __n = static_cast<size_t>(asprintf_l(&__bb, _LIBCPP_GET_C_LOCALE, "%.0Lf", __units));
#else
 __n = __asprintf_l(&__bb, __cloc(), "%.0Lf", __units);
#endif
 if (__bb == 0)
 __throw_bad_alloc();
 __hn.reset(__bb);
 __hd.reset((char_type*)malloc(__n * sizeof(char_type)));
 if (__hd == nullptr)
 __throw_bad_alloc();
 __db = __hd.get();
 }
 // gather info
 locale __loc = __iob.getloc();
 const ctype<char_type>& __ct = use_facet<ctype<char_type> >(__loc);
 __ct.widen(__bb, __bb + __n, __db);
 bool __neg = __n > 0 && __bb[0] == '-';
 money_base::pattern __pat;
 char_type __dp;
 char_type __ts;
 string __grp;
 string_type __sym;
 string_type __sn;
 int __fd;
 this->__gather_info(__intl, __neg, __loc, __pat, __dp, __ts, __grp, __sym, __sn, __fd);
 // secure memory for formatting
 char_type __mbuf[__bs];
 char_type* __mb = __mbuf;
 unique_ptr<char_type, void(*)(void*)> __hw(0, free);
 size_t __exn = static_cast<int>(__n) > __fd ?
 (__n - static_cast<size_t>(__fd)) * 2 + __sn.size() +
 __sym.size() + static_cast<size_t>(__fd) + 1
 : __sn.size() + __sym.size() + static_cast<size_t>(__fd) + 2;
 if (__exn > __bs)
 {
 __hw.reset((char_type*)malloc(__exn * sizeof(char_type)));
 __mb = __hw.get();
 if (__mb == 0)
 __throw_bad_alloc();
 }
 // format
 char_type* __mi;
 char_type* __me;
 this->__format(__mb, __mi, __me, __iob.flags(),
 __db, __db + __n, __ct,
 __neg, __pat, __dp, __ts, __grp, __sym, __sn, __fd);
 return __pad_and_output(__s, __mb, __mi, __me, __iob, __fl);
}

template <class _CharT, class _OutputIterator>
_OutputIterator
money_put<_CharT, _OutputIterator>::do_put(iter_type __s, bool __intl,
 ios_base& __iob, char_type __fl,
 const string_type& __digits) const
{
 // gather info
 locale __loc = __iob.getloc();
 const ctype<char_type>& __ct = use_facet<ctype<char_type> >(__loc);
 bool __neg = __digits.size() > 0 && __digits[0] == __ct.widen('-');
 money_base::pattern __pat;
 char_type __dp;
 char_type __ts;
 string __grp;
 string_type __sym;
 string_type __sn;
 int __fd;
 this->__gather_info(__intl, __neg, __loc, __pat, __dp, __ts, __grp, __sym, __sn, __fd);
 // secure memory for formatting
 char_type __mbuf[100];
 char_type* __mb = __mbuf;
 unique_ptr<char_type, void(*)(void*)> __h(0, free);
 size_t __exn = static_cast<int>(__digits.size()) > __fd ?
 (__digits.size() - static_cast<size_t>(__fd)) * 2 +
 __sn.size() + __sym.size() + static_cast<size_t>(__fd) + 1
 : __sn.size() + __sym.size() + static_cast<size_t>(__fd) + 2;
 if (__exn > 100)
 {
 __h.reset((char_type*)malloc(__exn * sizeof(char_type)));
 __mb = __h.get();
 if (__mb == 0)
 __throw_bad_alloc();
 }
 // format
 char_type* __mi;
 char_type* __me;
 this->__format(__mb, __mi, __me, __iob.flags(),
 __digits.data(), __digits.data() + __digits.size(), __ct,
 __neg, __pat, __dp, __ts, __grp, __sym, __sn, __fd);
 return __pad_and_output(__s, __mb, __mi, __me, __iob, __fl);
}

_LIBCPP_EXTERN_TEMPLATE2(class _LIBCPP_TYPE_VIS money_put<char>)
_LIBCPP_EXTERN_TEMPLATE2(class _LIBCPP_TYPE_VIS money_put<wchar_t>)

// messages

class _LIBCPP_TYPE_VIS messages_base
{
public:
 typedef ptrdiff_t catalog;

 _LIBCPP_ALWAYS_INLINE messages_base() {}
};

template <class _CharT>
class _LIBCPP_TYPE_VIS_ONLY messages
 : public locale::facet,
 public messages_base
{
public:
 typedef _CharT char_type;
 typedef basic_string<_CharT> string_type;

 _LIBCPP_ALWAYS_INLINE
 explicit messages(size_t __refs = 0)
 : locale::facet(__refs) {}

 _LIBCPP_ALWAYS_INLINE
 catalog open(const basic_string<char>& __nm, const locale& __loc) const
 {
 return do_open(__nm, __loc);
 }

 _LIBCPP_ALWAYS_INLINE
 string_type get(catalog __c, int __set, int __msgid,
 const string_type& __dflt) const
 {
 return do_get(__c, __set, __msgid, __dflt);
 }

 _LIBCPP_ALWAYS_INLINE
 void close(catalog __c) const
 {
 do_close(__c);
 }

 static locale::id id;

protected:
 _LIBCPP_ALWAYS_INLINE
 ~messages() {}

 virtual catalog do_open(const basic_string<char>&, const locale&) const;
 virtual string_type do_get(catalog, int __set, int __msgid,
 const string_type& __dflt) const;
 virtual void do_close(catalog) const;
};

template <class _CharT>
locale::id
messages<_CharT>::id;

template <class _CharT>
typename messages<_CharT>::catalog
messages<_CharT>::do_open(const basic_string<char>& __nm, const locale&) const
{
#ifdef _WIN32
 return -1;
#else // _WIN32
 catalog __cat = (catalog)catopen(__nm.c_str(), NL_CAT_LOCALE);
 if (__cat != -1)
 __cat = static_cast<catalog>((static_cast<size_t>(__cat) >> 1));
 return __cat;
#endif // _WIN32
}

template <class _CharT>
typename messages<_CharT>::string_type
messages<_CharT>::do_get(catalog __c, int __set, int __msgid,
 const string_type& __dflt) const
{
#ifdef _WIN32
 return __dflt;
#else // _WIN32
 string __ndflt;
 __narrow_to_utf8<sizeof(char_type)*__CHAR_BIT__>()(back_inserter(__ndflt),
 __dflt.c_str(),
 __dflt.c_str() + __dflt.size());
 if (__c != -1)
 __c <<= 1;
 nl_catd __cat = (nl_catd)__c;
 char* __n = catgets(__cat, __set, __msgid, __ndflt.c_str());
 string_type __w;
 __widen_from_utf8<sizeof(char_type)*__CHAR_BIT__>()(back_inserter(__w),
 __n, __n + strlen(__n));
 return __w;
#endif // _WIN32
}

template <class _CharT>
void
messages<_CharT>::do_close(catalog __c) const
{
#if !defined(_WIN32)
 if (__c != -1)
 __c <<= 1;
 nl_catd __cat = (nl_catd)__c;
 catclose(__cat);
#endif // !_WIN32
}

_LIBCPP_EXTERN_TEMPLATE2(class _LIBCPP_TYPE_VIS messages<char>)
_LIBCPP_EXTERN_TEMPLATE2(class _LIBCPP_TYPE_VIS messages<wchar_t>)

template <class _CharT>
class _LIBCPP_TYPE_VIS_ONLY messages_byname
 : public messages<_CharT>
{
public:
 typedef messages_base::catalog catalog;
 typedef basic_string<_CharT> string_type;

 _LIBCPP_ALWAYS_INLINE
 explicit messages_byname(const char*, size_t __refs = 0)
 : messages<_CharT>(__refs) {}

 _LIBCPP_ALWAYS_INLINE
 explicit messages_byname(const string&, size_t __refs = 0)
 : messages<_CharT>(__refs) {}

protected:
 _LIBCPP_ALWAYS_INLINE
 ~messages_byname() {}
};

_LIBCPP_EXTERN_TEMPLATE2(class _LIBCPP_TYPE_VIS messages_byname<char>)
_LIBCPP_EXTERN_TEMPLATE2(class _LIBCPP_TYPE_VIS messages_byname<wchar_t>)

template<class _Codecvt, class _Elem = wchar_t,
 class _Wide_alloc = allocator<_Elem>,
 class _Byte_alloc = allocator<char> >
class _LIBCPP_TYPE_VIS_ONLY wstring_convert
{
public:
 typedef basic_string<char, char_traits<char>, _Byte_alloc> byte_string;
 typedef basic_string<_Elem, char_traits<_Elem>, _Wide_alloc> wide_string;
 typedef typename _Codecvt::state_type state_type;
 typedef typename wide_string::traits_type::int_type int_type;

private:
 byte_string __byte_err_string_;
 wide_string __wide_err_string_;
 _Codecvt* __cvtptr_;
 state_type __cvtstate_;
 size_t __cvtcount_;

 wstring_convert(const wstring_convert& __wc);
 wstring_convert& operator=(const wstring_convert& __wc);
public:
 _LIBCPP_EXPLICIT_AFTER_CXX11 wstring_convert(_Codecvt* __pcvt = new _Codecvt);
 wstring_convert(_Codecvt* __pcvt, state_type __state);
 _LIBCPP_EXPLICIT_AFTER_CXX11 wstring_convert(const byte_string& __byte_err,
 const wide_string& __wide_err = wide_string());
#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES
 wstring_convert(wstring_convert&& __wc);
#endif
 ~wstring_convert();

 _LIBCPP_ALWAYS_INLINE
 wide_string from_bytes(char __byte)
 {return from_bytes(&__byte, &__byte+1);}
 _LIBCPP_ALWAYS_INLINE
 wide_string from_bytes(const char* __ptr)
 {return from_bytes(__ptr, __ptr + char_traits<char>::length(__ptr));}
 _LIBCPP_ALWAYS_INLINE
 wide_string from_bytes(const byte_string& __str)
 {return from_bytes(__str.data(), __str.data() + __str.size());}
 wide_string from_bytes(const char* __first, const char* __last);

 _LIBCPP_ALWAYS_INLINE
 byte_string to_bytes(_Elem __wchar)
 {return to_bytes(&__wchar, &__wchar+1);}
 _LIBCPP_ALWAYS_INLINE
 byte_string to_bytes(const _Elem* __wptr)
 {return to_bytes(__wptr, __wptr + char_traits<_Elem>::length(__wptr));}
 _LIBCPP_ALWAYS_INLINE
 byte_string to_bytes(const wide_string& __wstr)
 {return to_bytes(__wstr.data(), __wstr.data() + __wstr.size());}
 byte_string to_bytes(const _Elem* __first, const _Elem* __last);

 _LIBCPP_ALWAYS_INLINE
 size_t converted() const _NOEXCEPT {return __cvtcount_;}
 _LIBCPP_ALWAYS_INLINE
 state_type state() const {return __cvtstate_;}
};

template<class _Codecvt, class _Elem, class _Wide_alloc, class _Byte_alloc>
inline _LIBCPP_ALWAYS_INLINE
wstring_convert<_Codecvt, _Elem, _Wide_alloc, _Byte_alloc>::
 wstring_convert(_Codecvt* __pcvt)
 : __cvtptr_(__pcvt), __cvtstate_(), __cvtcount_(0)
{
}

template<class _Codecvt, class _Elem, class _Wide_alloc, class _Byte_alloc>
inline _LIBCPP_ALWAYS_INLINE
wstring_convert<_Codecvt, _Elem, _Wide_alloc, _Byte_alloc>::
 wstring_convert(_Codecvt* __pcvt, state_type __state)
 : __cvtptr_(__pcvt), __cvtstate_(__state), __cvtcount_(0)
{
}

template<class _Codecvt, class _Elem, class _Wide_alloc, class _Byte_alloc>
wstring_convert<_Codecvt, _Elem, _Wide_alloc, _Byte_alloc>::
 wstring_convert(const byte_string& __byte_err, const wide_string& __wide_err)
 : __byte_err_string_(__byte_err), __wide_err_string_(__wide_err),
 __cvtstate_(), __cvtcount_(0)
{
 __cvtptr_ = new _Codecvt;
}

#ifndef _LIBCPP_HAS_NO_RVALUE_REFERENCES

template<class _Codecvt, class _Elem, class _Wide_alloc, class _Byte_alloc>
inline _LIBCPP_ALWAYS_INLINE
wstring_convert<_Codecvt, _Elem, _Wide_alloc, _Byte_alloc>::
 wstring_convert(wstring_convert&& __wc)
 : __byte_err_string_(_VSTD::move(__wc.__byte_err_string_)),
 __wide_err_string_(_VSTD::move(__wc.__wide_err_string_)),
 __cvtptr_(__wc.__cvtptr_),
 __cvtstate_(__wc.__cvtstate_), __cvtcount_(__wc.__cvtstate_)
{
 __wc.__cvtptr_ = nullptr;
}

#endif // _LIBCPP_HAS_NO_RVALUE_REFERENCES

template<class _Codecvt, class _Elem, class _Wide_alloc, class _Byte_alloc>
wstring_convert<_Codecvt, _Elem, _Wide_alloc, _Byte_alloc>::~wstring_convert()
{
 delete __cvtptr_;
}

template<class _Codecvt, class _Elem, class _Wide_alloc, class _Byte_alloc>
typename wstring_convert<_Codecvt, _Elem, _Wide_alloc, _Byte_alloc>::wide_string
wstring_convert<_Codecvt, _Elem, _Wide_alloc, _Byte_alloc>::
 from_bytes(const char* __frm, const char* __frm_end)
{
 __cvtcount_ = 0;
 if (__cvtptr_ != nullptr)
 {
 wide_string __ws(2*(__frm_end - __frm), _Elem());
 if (__frm != __frm_end)
 __ws.resize(__ws.capacity());
 codecvt_base::result __r = codecvt_base::ok;
 state_type __st = __cvtstate_;
 if (__frm != __frm_end)
 {
 _Elem* __to = &__ws[0];
 _Elem* __to_end = __to + __ws.size();
 const char* __frm_nxt;
 do
 {
 _Elem* __to_nxt;
 __r = __cvtptr_->in(__st, __frm, __frm_end, __frm_nxt,
 __to, __to_end, __to_nxt);
 __cvtcount_ += __frm_nxt - __frm;
 if (__frm_nxt == __frm)
 {
 __r = codecvt_base::error;
 }
 else if (__r == codecvt_base::noconv)
 {
 __ws.resize(__to - &__ws[0]);
 // This only gets executed if _Elem is char
 __ws.append((const _Elem*)__frm, (const _Elem*)__frm_end);
 __frm = __frm_nxt;
 __r = codecvt_base::ok;
 }
 else if (__r == codecvt_base::ok)
 {
 __ws.resize(__to_nxt - &__ws[0]);
 __frm = __frm_nxt;
 }
 else if (__r == codecvt_base::partial)
 {
 ptrdiff_t __s = __to_nxt - &__ws[0];
 __ws.resize(2 * __s);
 __to = &__ws[0] + __s;
 __to_end = &__ws[0] + __ws.size();
 __frm = __frm_nxt;
 }
 } while (__r == codecvt_base::partial && __frm_nxt < __frm_end);
 }
 if (__r == codecvt_base::ok)
 return __ws;
 }
#ifndef _LIBCPP_NO_EXCEPTIONS
 if (__wide_err_string_.empty())
 throw range_error("wstring_convert: from_bytes error");
#endif // _LIBCPP_NO_EXCEPTIONS
 return __wide_err_string_;
}

template<class _Codecvt, class _Elem, class _Wide_alloc, class _Byte_alloc>
typename wstring_convert<_Codecvt, _Elem, _Wide_alloc, _Byte_alloc>::byte_string
wstring_convert<_Codecvt, _Elem, _Wide_alloc, _Byte_alloc>::
 to_bytes(const _Elem* __frm, const _Elem* __frm_end)
{
 __cvtcount_ = 0;
 if (__cvtptr_ != nullptr)
 {
 byte_string __bs(2*(__frm_end - __frm), char());
 if (__frm != __frm_end)
 __bs.resize(__bs.capacity());
 codecvt_base::result __r = codecvt_base::ok;
 state_type __st = __cvtstate_;
 if (__frm != __frm_end)
 {
 char* __to = &__bs[0];
 char* __to_end = __to + __bs.size();
 const _Elem* __frm_nxt;
 do
 {
 char* __to_nxt;
 __r = __cvtptr_->out(__st, __frm, __frm_end, __frm_nxt,
 __to, __to_end, __to_nxt);
 __cvtcount_ += __frm_nxt - __frm;
 if (__frm_nxt == __frm)
 {
 __r = codecvt_base::error;
 }
 else if (__r == codecvt_base::noconv)
 {
 __bs.resize(__to - &__bs[0]);
 // This only gets executed if _Elem is char
 __bs.append((const char*)__frm, (const char*)__frm_end);
 __frm = __frm_nxt;
 __r = codecvt_base::ok;
 }
 else if (__r == codecvt_base::ok)
 {
 __bs.resize(__to_nxt - &__bs[0]);
 __frm = __frm_nxt;
 }
 else if (__r == codecvt_base::partial)
 {
 ptrdiff_t __s = __to_nxt - &__bs[0];
 __bs.resize(2 * __s);
 __to = &__bs[0] + __s;
 __to_end = &__bs[0] + __bs.size();
 __frm = __frm_nxt;
 }
 } while (__r == codecvt_base::partial && __frm_nxt < __frm_end);
 }
 if (__r == codecvt_base::ok)
 {
 size_t __s = __bs.size();
 __bs.resize(__bs.capacity());
 char* __to = &__bs[0] + __s;
 char* __to_end = __to + __bs.size();
 do
 {
 char* __to_nxt;
 __r = __cvtptr_->unshift(__st, __to, __to_end, __to_nxt);
 if (__r == codecvt_base::noconv)
 {
 __bs.resize(__to - &__bs[0]);
 __r = codecvt_base::ok;
 }
 else if (__r == codecvt_base::ok)
 {
 __bs.resize(__to_nxt - &__bs[0]);
 }
 else if (__r == codecvt_base::partial)
 {
 ptrdiff_t __sp = __to_nxt - &__bs[0];
 __bs.resize(2 * __sp);
 __to = &__bs[0] + __sp;
 __to_end = &__bs[0] + __bs.size();
 }
 } while (__r == codecvt_base::partial);
 if (__r == codecvt_base::ok)
 return __bs;
 }
 }
#ifndef _LIBCPP_NO_EXCEPTIONS
 if (__byte_err_string_.empty())
 throw range_error("wstring_convert: to_bytes error");
#endif // _LIBCPP_NO_EXCEPTIONS
 return __byte_err_string_;
}

template <class _Codecvt, class _Elem = wchar_t, class _Tr = char_traits<_Elem> >
class _LIBCPP_TYPE_VIS_ONLY wbuffer_convert
 : public basic_streambuf<_Elem, _Tr>
{
public:
 // types:
 typedef _Elem char_type;
 typedef _Tr traits_type;
 typedef typename traits_type::int_type int_type;
 typedef typename traits_type::pos_type pos_type;
 typedef typename traits_type::off_type off_type;
 typedef typename _Codecvt::state_type state_type;

private:
 char* __extbuf_;
 const char* __extbufnext_;
 const char* __extbufend_;
 char __extbuf_min_[8];
 size_t __ebs_;
 char_type* __intbuf_;
 size_t __ibs_;
 streambuf* __bufptr_;
 _Codecvt* __cv_;
 state_type __st_;
 ios_base::openmode __cm_;
 bool __owns_eb_;
 bool __owns_ib_;
 bool __always_noconv_;

 wbuffer_convert(const wbuffer_convert&);
 wbuffer_convert& operator=(const wbuffer_convert&);
public:
 _LIBCPP_EXPLICIT_AFTER_CXX11 wbuffer_convert(streambuf* __bytebuf = 0, 
 _Codecvt* __pcvt = new _Codecvt, state_type __state = state_type());
 ~wbuffer_convert();

 _LIBCPP_INLINE_VISIBILITY
 streambuf* rdbuf() const {return __bufptr_;}
 _LIBCPP_INLINE_VISIBILITY
 streambuf* rdbuf(streambuf* __bytebuf)
 {
 streambuf* __r = __bufptr_;
 __bufptr_ = __bytebuf;
 return __r;
 }

 _LIBCPP_INLINE_VISIBILITY
 state_type state() const {return __st_;}

protected:
 virtual int_type underflow();
 virtual int_type pbackfail(int_type __c = traits_type::eof());
 virtual int_type overflow (int_type __c = traits_type::eof());
 virtual basic_streambuf<char_type, traits_type>* setbuf(char_type* __s,
 streamsize __n);
 virtual pos_type seekoff(off_type __off, ios_base::seekdir __way,
 ios_base::openmode __wch = ios_base::in | ios_base::out);
 virtual pos_type seekpos(pos_type __sp,
 ios_base::openmode __wch = ios_base::in | ios_base::out);
 virtual int sync();

private:
 bool __read_mode();
 void __write_mode();
 wbuffer_convert* __close();
};

template <class _Codecvt, class _Elem, class _Tr>
wbuffer_convert<_Codecvt, _Elem, _Tr>::
 wbuffer_convert(streambuf* __bytebuf, _Codecvt* __pcvt, state_type __state)
 : __extbuf_(0),
 __extbufnext_(0),
 __extbufend_(0),
 __ebs_(0),
 __intbuf_(0),
 __ibs_(0),
 __bufptr_(__bytebuf),
 __cv_(__pcvt),
 __st_(__state),
 __cm_(0),
 __owns_eb_(false),
 __owns_ib_(false),
 __always_noconv_(__cv_ ? __cv_->always_noconv() : false)
{
 setbuf(0, 4096);
}

template <class _Codecvt, class _Elem, class _Tr>
wbuffer_convert<_Codecvt, _Elem, _Tr>::~wbuffer_convert()
{
 __close();
 delete __cv_;
 if (__owns_eb_)
 delete [] __extbuf_;
 if (__owns_ib_)
 delete [] __intbuf_;
}

template <class _Codecvt, class _Elem, class _Tr>
typename wbuffer_convert<_Codecvt, _Elem, _Tr>::int_type
wbuffer_convert<_Codecvt, _Elem, _Tr>::underflow()
{
 if (__cv_ == 0 || __bufptr_ == 0)
 return traits_type::eof();
 bool __initial = __read_mode();
 char_type __1buf;
 if (this->gptr() == 0)
 this->setg(&__1buf, &__1buf+1, &__1buf+1);
 const size_t __unget_sz = __initial ? 0 : min<size_t>((this->egptr() - this->eback()) / 2, 4);
 int_type __c = traits_type::eof();
 if (this->gptr() == this->egptr())
 {
 memmove(this->eback(), this->egptr() - __unget_sz, __unget_sz * sizeof(char_type));
 if (__always_noconv_)
 {
 streamsize __nmemb = static_cast<streamsize>(this->egptr() - this->eback() - __unget_sz);
 __nmemb = __bufptr_->sgetn((char*)this->eback() + __unget_sz, __nmemb);
 if (__nmemb != 0)
 {
 this->setg(this->eback(),
 this->eback() + __unget_sz,
 this->eback() + __unget_sz + __nmemb);
 __c = *this->gptr();
 }
 }
 else
 {
 memmove(__extbuf_, __extbufnext_, __extbufend_ - __extbufnext_);
 __extbufnext_ = __extbuf_ + (__extbufend_ - __extbufnext_);
 __extbufend_ = __extbuf_ + (__extbuf_ == __extbuf_min_ ? sizeof(__extbuf_min_) : __ebs_);
 streamsize __nmemb = _VSTD::min(static_cast<streamsize>(this->egptr() - this->eback() - __unget_sz),
 static_cast<streamsize>(__extbufend_ - __extbufnext_));
 codecvt_base::result __r;
 state_type __svs = __st_;
 streamsize __nr = __bufptr_->sgetn(const_cast<char*>(__extbufnext_), __nmemb);
 if (__nr != 0)
 {
 __extbufend_ = __extbufnext_ + __nr;
 char_type* __inext;
 __r = __cv_->in(__st_, __extbuf_, __extbufend_, __extbufnext_,
 this->eback() + __unget_sz,
 this->egptr(), __inext);
 if (__r == codecvt_base::noconv)
 {
 this->setg((char_type*)__extbuf_, (char_type*)__extbuf_, (char_type*)__extbufend_);
 __c = *this->gptr();
 }
 else if (__inext != this->eback() + __unget_sz)
 {
 this->setg(this->eback(), this->eback() + __unget_sz, __inext);
 __c = *this->gptr();
 }
 }
 }
 }
 else
 __c = *this->gptr();
 if (this->eback() == &__1buf)
 this->setg(0, 0, 0);
 return __c;
}

template <class _Codecvt, class _Elem, class _Tr>
typename wbuffer_convert<_Codecvt, _Elem, _Tr>::int_type
wbuffer_convert<_Codecvt, _Elem, _Tr>::pbackfail(int_type __c)
{
 if (__cv_ != 0 && __bufptr_ != 0 && this->eback() < this->gptr())
 {
 if (traits_type::eq_int_type(__c, traits_type::eof()))
 {
 this->gbump(-1);
 return traits_type::not_eof(__c);
 }
 if (traits_type::eq(traits_type::to_char_type(__c), this->gptr()[-1]))
 {
 this->gbump(-1);
 *this->gptr() = traits_type::to_char_type(__c);
 return __c;
 }
 }
 return traits_type::eof();
}

template <class _Codecvt, class _Elem, class _Tr>
typename wbuffer_convert<_Codecvt, _Elem, _Tr>::int_type
wbuffer_convert<_Codecvt, _Elem, _Tr>::overflow(int_type __c)
{
 if (__cv_ == 0 || __bufptr_ == 0)
 return traits_type::eof();
 __write_mode();
 char_type __1buf;
 char_type* __pb_save = this->pbase();
 char_type* __epb_save = this->epptr();
 if (!traits_type::eq_int_type(__c, traits_type::eof()))
 {
 if (this->pptr() == 0)
 this->setp(&__1buf, &__1buf+1);
 *this->pptr() = traits_type::to_char_type(__c);
 this->pbump(1);
 }
 if (this->pptr() != this->pbase())
 {
 if (__always_noconv_)
 {
 streamsize __nmemb = static_cast<streamsize>(this->pptr() - this->pbase());
 if (__bufptr_->sputn((const char*)this->pbase(), __nmemb) != __nmemb)
 return traits_type::eof();
 }
 else
 {
 char* __extbe = __extbuf_;
 codecvt_base::result __r;
 do
 {
 const char_type* __e;
 __r = __cv_->out(__st_, this->pbase(), this->pptr(), __e,
 __extbuf_, __extbuf_ + __ebs_, __extbe);
 if (__e == this->pbase())
 return traits_type::eof();
 if (__r == codecvt_base::noconv)
 {
 streamsize __nmemb = static_cast<size_t>(this->pptr() - this->pbase());
 if (__bufptr_->sputn((const char*)this->pbase(), __nmemb) != __nmemb)
 return traits_type::eof();
 }
 else if (__r == codecvt_base::ok || __r == codecvt_base::partial)
 {
 streamsize __nmemb = static_cast<size_t>(__extbe - __extbuf_);
 if (__bufptr_->sputn(__extbuf_, __nmemb) != __nmemb)
 return traits_type::eof();
 if (__r == codecvt_base::partial)
 {
 this->setp((char_type*)__e, this->pptr());
 this->pbump(this->epptr() - this->pbase());
 }
 }
 else
 return traits_type::eof();
 } while (__r == codecvt_base::partial);
 }
 this->setp(__pb_save, __epb_save);
 }
 return traits_type::not_eof(__c);
}

template <class _Codecvt, class _Elem, class _Tr>
basic_streambuf<_Elem, _Tr>*
wbuffer_convert<_Codecvt, _Elem, _Tr>::setbuf(char_type* __s, streamsize __n)
{
 this->setg(0, 0, 0);
 this->setp(0, 0);
 if (__owns_eb_)
 delete [] __extbuf_;
 if (__owns_ib_)
 delete [] __intbuf_;
 __ebs_ = __n;
 if (__ebs_ > sizeof(__extbuf_min_))
 {
 if (__always_noconv_ && __s)
 {
 __extbuf_ = (char*)__s;
 __owns_eb_ = false;
 }
 else
 {
 __extbuf_ = new char[__ebs_];
 __owns_eb_ = true;
 }
 }
 else
 {
 __extbuf_ = __extbuf_min_;
 __ebs_ = sizeof(__extbuf_min_);
 __owns_eb_ = false;
 }
 if (!__always_noconv_)
 {
 __ibs_ = max<streamsize>(__n, sizeof(__extbuf_min_));
 if (__s && __ibs_ >= sizeof(__extbuf_min_))
 {
 __intbuf_ = __s;
 __owns_ib_ = false;
 }
 else
 {
 __intbuf_ = new char_type[__ibs_];
 __owns_ib_ = true;
 }
 }
 else
 {
 __ibs_ = 0;
 __intbuf_ = 0;
 __owns_ib_ = false;
 }
 return this;
}

template <class _Codecvt, class _Elem, class _Tr>
typename wbuffer_convert<_Codecvt, _Elem, _Tr>::pos_type
wbuffer_convert<_Codecvt, _Elem, _Tr>::seekoff(off_type __off, ios_base::seekdir __way,
 ios_base::openmode __om)
{
 int __width = __cv_->encoding();
 if (__cv_ == 0 || __bufptr_ == 0 || (__width <= 0 && __off != 0) || sync())
 return pos_type(off_type(-1));
 // __width > 0 || __off == 0
 switch (__way)
 {
 case ios_base::beg:
 break;
 case ios_base::cur:
 break;
 case ios_base::end:
 break;
 default:
 return pos_type(off_type(-1));
 }
 pos_type __r = __bufptr_->pubseekoff(__width * __off, __way, __om);
 __r.state(__st_);
 return __r;
}

template <class _Codecvt, class _Elem, class _Tr>
typename wbuffer_convert<_Codecvt, _Elem, _Tr>::pos_type
wbuffer_convert<_Codecvt, _Elem, _Tr>::seekpos(pos_type __sp, ios_base::openmode __wch)
{
 if (__cv_ == 0 || __bufptr_ == 0 || sync())
 return pos_type(off_type(-1));
 if (__bufptr_->pubseekpos(__sp, __wch) == pos_type(off_type(-1)))
 return pos_type(off_type(-1));
 return __sp;
}

template <class _Codecvt, class _Elem, class _Tr>
int
wbuffer_convert<_Codecvt, _Elem, _Tr>::sync()
{
 if (__cv_ == 0 || __bufptr_ == 0)
 return 0;
 if (__cm_ & ios_base::out)
 {
 if (this->pptr() != this->pbase())
 if (overflow() == traits_type::eof())
 return -1;
 codecvt_base::result __r;
 do
 {
 char* __extbe;
 __r = __cv_->unshift(__st_, __extbuf_, __extbuf_ + __ebs_, __extbe);
 streamsize __nmemb = static_cast<streamsize>(__extbe - __extbuf_);
 if (__bufptr_->sputn(__extbuf_, __nmemb) != __nmemb)
 return -1;
 } while (__r == codecvt_base::partial);
 if (__r == codecvt_base::error)
 return -1;
 if (__bufptr_->pubsync())
 return -1;
 }
 else if (__cm_ & ios_base::in)
 {
 off_type __c;
 if (__always_noconv_)
 __c = this->egptr() - this->gptr();
 else
 {
 int __width = __cv_->encoding();
 __c = __extbufend_ - __extbufnext_;
 if (__width > 0)
 __c += __width * (this->egptr() - this->gptr());
 else
 {
 if (this->gptr() != this->egptr())
 {
 reverse(this->gptr(), this->egptr());
 codecvt_base::result __r;
 const char_type* __e = this->gptr();
 char* __extbe;
 do
 {
 __r = __cv_->out(__st_, __e, this->egptr(), __e,
 __extbuf_, __extbuf_ + __ebs_, __extbe);
 switch (__r)
 {
 case codecvt_base::noconv:
 __c += this->egptr() - this->gptr();
 break;
 case codecvt_base::ok:
 case codecvt_base::partial:
 __c += __extbe - __extbuf_;
 break;
 default:
 return -1;
 }
 } while (__r == codecvt_base::partial);
 }
 }
 }
 if (__bufptr_->pubseekoff(-__c, ios_base::cur, __cm_) == pos_type(off_type(-1)))
 return -1;
 this->setg(0, 0, 0);
 __cm_ = 0;
 }
 return 0;
}

template <class _Codecvt, class _Elem, class _Tr>
bool
wbuffer_convert<_Codecvt, _Elem, _Tr>::__read_mode()
{
 if (!(__cm_ & ios_base::in))
 {
 this->setp(0, 0);
 if (__always_noconv_)
 this->setg((char_type*)__extbuf_,
 (char_type*)__extbuf_ + __ebs_,
 (char_type*)__extbuf_ + __ebs_);
 else
 this->setg(__intbuf_, __intbuf_ + __ibs_, __intbuf_ + __ibs_);
 __cm_ = ios_base::in;
 return true;
 }
 return false;
}

template <class _Codecvt, class _Elem, class _Tr>
void
wbuffer_convert<_Codecvt, _Elem, _Tr>::__write_mode()
{
 if (!(__cm_ & ios_base::out))
 {
 this->setg(0, 0, 0);
 if (__ebs_ > sizeof(__extbuf_min_))
 {
 if (__always_noconv_)
 this->setp((char_type*)__extbuf_,
 (char_type*)__extbuf_ + (__ebs_ - 1));
 else
 this->setp(__intbuf_, __intbuf_ + (__ibs_ - 1));
 }
 else
 this->setp(0, 0);
 __cm_ = ios_base::out;
 }
}

template <class _Codecvt, class _Elem, class _Tr>
wbuffer_convert<_Codecvt, _Elem, _Tr>*
wbuffer_convert<_Codecvt, _Elem, _Tr>::__close()
{
 wbuffer_convert* __rt = 0;
 if (__cv_ != 0 && __bufptr_ != 0)
 {
 __rt = this;
 if ((__cm_ & ios_base::out) && sync())
 __rt = 0;
 }
 return __rt;
}

_LIBCPP_END_NAMESPACE_STD

#endif // _LIBCPP_LOCALE