// Components for manipulating sequences of characters -*- C++ -*-
-// Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006
+// Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
+// 2006, 2007, 2008, 2009
// Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library. This library is free
// software; you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the
-// Free Software Foundation; either version 2, or (at your option)
+// Free Software Foundation; either version 3, or (at your option)
// any later version.
// This library is distributed in the hope that it will be useful,
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
-// You should have received a copy of the GNU General Public License along
-// with this library; see the file COPYING. If not, write to the Free
-// Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
-// USA.
+// Under Section 7 of GPL version 3, you are granted additional
+// permissions described in the GCC Runtime Library Exception, version
+// 3.1, as published by the Free Software Foundation.
-// As a special exception, you may use this file as part of a free software
-// library without restriction. Specifically, if other files instantiate
-// templates or use macros or inline functions from this file, or you compile
-// this file and link it with other files to produce an executable, this
-// file does not by itself cause the resulting executable to be covered by
-// the GNU General Public License. This exception does not however
-// invalidate any other reasons why the executable file might be covered by
-// the GNU General Public License.
-
-//
-// ISO C++ 14882: 21 Strings library
-//
+// You should have received a copy of the GNU General Public License and
+// a copy of the GCC Runtime Library Exception along with this program;
+// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
+// <http://www.gnu.org/licenses/>.
/** @file basic_string.h
* This is an internal header file, included by other library headers.
* You should not attempt to use it directly.
*/
+//
+// ISO C++ 14882: 21 Strings library
+//
+
#ifndef _BASIC_STRING_H
#define _BASIC_STRING_H 1
#include <ext/atomicity.h>
#include <debug/debug.h>
+#include <initializer_list>
_GLIBCXX_BEGIN_NAMESPACE(std)
* @class basic_string basic_string.h <string>
* @brief Managing sequences of characters and character-like objects.
*
- * @ingroup Containers
- * @ingroup Sequences
+ * @ingroup sequences
*
* Meets the requirements of a <a href="tables.html#65">container</a>, a
* <a href="tables.html#66">reversible container</a>, and a
* @doctodo
*
*
- * @if maint
* Documentation? What's that?
* Nathan Myers <ncm@cantrip.org>.
*
*
* All but the last paragraph is considered pretty conventional
* for a C++ string implementation.
- * @endif
*/
// 21.3 Template class basic_string
template<typename _CharT, typename _Traits, typename _Alloc>
void
_M_set_length_and_sharable(size_type __n)
- {
- this->_M_set_sharable(); // One reference.
- this->_M_length = __n;
- traits_type::assign(this->_M_refdata()[__n], _S_terminal);
- // grrr. (per 21.3.4)
- // You cannot leave those LWG people alone for a second.
+ {
+#ifndef _GLIBCXX_FULLY_DYNAMIC_STRING
+ if (__builtin_expect(this != &_S_empty_rep(), false))
+#endif
+ {
+ this->_M_set_sharable(); // One reference.
+ this->_M_length = __n;
+ traits_type::assign(this->_M_refdata()[__n], _S_terminal);
+ // grrr. (per 21.3.4)
+ // You cannot leave those LWG people alone for a second.
+ }
}
_CharT*
_S_copy_chars(_CharT* __p, const _CharT* __k1, const _CharT* __k2)
{ _M_copy(__p, __k1, __k2 - __k1); }
+ static int
+ _S_compare(size_type __n1, size_type __n2)
+ {
+ const difference_type __d = difference_type(__n1 - __n2);
+
+ if (__d > __gnu_cxx::__numeric_traits<int>::__max)
+ return __gnu_cxx::__numeric_traits<int>::__max;
+ else if (__d < __gnu_cxx::__numeric_traits<int>::__min)
+ return __gnu_cxx::__numeric_traits<int>::__min;
+ else
+ return int(__d);
+ }
+
void
_M_mutate(size_type __pos, size_type __len1, size_type __len2);
* @param n Number of characters to copy.
* @param a Allocator to use (default is default allocator).
*
- * NB: @a s must have at least @a n characters, '\0' has no special
+ * NB: @a s must have at least @a n characters, '\\0' has no special
* meaning.
*/
basic_string(const _CharT* __s, size_type __n,
*/
basic_string(size_type __n, _CharT __c, const _Alloc& __a = _Alloc());
+#ifdef __GXX_EXPERIMENTAL_CXX0X__
+ /**
+ * @brief Construct string from an initializer list.
+ * @param l std::initializer_list of characters.
+ * @param a Allocator to use (default is default allocator).
+ */
+ basic_string(initializer_list<_CharT> __l, const _Alloc& __a = _Alloc());
+#endif // __GXX_EXPERIMENTAL_CXX0X__
+
/**
* @brief Construct string as copy of a range.
* @param beg Start of range.
return *this;
}
+#ifdef __GXX_EXPERIMENTAL_CXX0X__
+ /**
+ * @brief Set value to string constructed from initializer list.
+ * @param l std::initializer_list.
+ */
+ basic_string&
+ operator=(initializer_list<_CharT> __l)
+ {
+ this->assign(__l.begin(), __l.size());
+ return *this;
+ }
+#endif // __GXX_EXPERIMENTAL_CXX0X__
+
// Iterators:
/**
* Returns a read/write iterator that points to the first character in
rend() const
{ return const_reverse_iterator(this->begin()); }
+#ifdef __GXX_EXPERIMENTAL_CXX0X__
+ /**
+ * Returns a read-only (constant) iterator that points to the first
+ * character in the %string.
+ */
+ const_iterator
+ cbegin() const
+ { return const_iterator(this->_M_data()); }
+
+ /**
+ * Returns a read-only (constant) iterator that points one past the
+ * last character in the %string.
+ */
+ const_iterator
+ cend() const
+ { return const_iterator(this->_M_data() + this->size()); }
+
+ /**
+ * Returns a read-only (constant) reverse iterator that points
+ * to the last character in the %string. Iteration is done in
+ * reverse element order.
+ */
+ const_reverse_iterator
+ crbegin() const
+ { return const_reverse_iterator(this->end()); }
+
+ /**
+ * Returns a read-only (constant) reverse iterator that points
+ * to one before the first character in the %string. Iteration
+ * is done in reverse element order.
+ */
+ const_reverse_iterator
+ crend() const
+ { return const_reverse_iterator(this->begin()); }
+#endif
+
public:
// Capacity:
/// Returns the number of characters in the string, not including any
return *this;
}
+#ifdef __GXX_EXPERIMENTAL_CXX0X__
+ /**
+ * @brief Append an initializer_list of characters.
+ * @param l The initializer_list of characters to be appended.
+ * @return Reference to this string.
+ */
+ basic_string&
+ operator+=(initializer_list<_CharT> __l)
+ { return this->append(__l.begin(), __l.size()); }
+#endif // __GXX_EXPERIMENTAL_CXX0X__
+
/**
* @brief Append a string to this string.
* @param str The string to append.
basic_string&
append(size_type __n, _CharT __c);
+#ifdef __GXX_EXPERIMENTAL_CXX0X__
+ /**
+ * @brief Append an initializer_list of characters.
+ * @param l The initializer_list of characters to append.
+ * @return Reference to this string.
+ */
+ basic_string&
+ append(initializer_list<_CharT> __l)
+ { return this->append(__l.begin(), __l.size()); }
+#endif // __GXX_EXPERIMENTAL_CXX0X__
+
/**
* @brief Append a range of characters.
* @param first Iterator referencing the first character to append.
assign(_InputIterator __first, _InputIterator __last)
{ return this->replace(_M_ibegin(), _M_iend(), __first, __last); }
+#ifdef __GXX_EXPERIMENTAL_CXX0X__
+ /**
+ * @brief Set value to an initializer_list of characters.
+ * @param l The initializer_list of characters to assign.
+ * @return Reference to this string.
+ */
+ basic_string&
+ assign(initializer_list<_CharT> __l)
+ { return this->assign(__l.begin(), __l.size()); }
+#endif // __GXX_EXPERIMENTAL_CXX0X__
+
/**
* @brief Insert multiple characters.
* @param p Iterator referencing location in string to insert at.
insert(iterator __p, _InputIterator __beg, _InputIterator __end)
{ this->replace(__p, __p, __beg, __end); }
+#ifdef __GXX_EXPERIMENTAL_CXX0X__
+ /**
+ * @brief Insert an initializer_list of characters.
+ * @param p Iterator referencing location in string to insert at.
+ * @param l The initializer_list of characters to insert.
+ * @throw std::length_error If new length exceeds @c max_size().
+ */
+ void
+ insert(iterator __p, initializer_list<_CharT> __l)
+ {
+ _GLIBCXX_DEBUG_PEDASSERT(__p >= _M_ibegin() && __p <= _M_iend());
+ this->insert(__p - _M_ibegin(), __l.begin(), __l.size());
+ }
+#endif // __GXX_EXPERIMENTAL_CXX0X__
+
/**
* @brief Insert value of a string.
* @param pos1 Iterator referencing location in string to insert at.
* The value of the string doesn't change if an error is thrown.
*/
iterator
- erase(iterator __first, iterator __last)
- {
- _GLIBCXX_DEBUG_PEDASSERT(__first >= _M_ibegin() && __first <= __last
- && __last <= _M_iend());
- const size_type __pos = __first - _M_ibegin();
- _M_mutate(__pos, __last - __first, size_type(0));
- _M_rep()->_M_set_leaked();
- return iterator(_M_data() + __pos);
- }
-
+ erase(iterator __first, iterator __last);
+
/**
* @brief Replace characters with value from another string.
* @param pos Index of first character to replace.
__k1.base(), __k2 - __k1);
}
+#ifdef __GXX_EXPERIMENTAL_CXX0X__
+ /**
+ * @brief Replace range of characters with initializer_list.
+ * @param i1 Iterator referencing start of range to replace.
+ * @param i2 Iterator referencing end of range to replace.
+ * @param l The initializer_list of characters to insert.
+ * @return Reference to this string.
+ * @throw std::length_error If new length exceeds @c max_size().
+ *
+ * Removes the characters in the range [i1,i2). In place, characters
+ * in the range [k1,k2) are inserted. If the length of result exceeds
+ * max_size(), length_error is thrown. The value of the string doesn't
+ * change if an error is thrown.
+ */
+ basic_string& replace(iterator __i1, iterator __i2,
+ initializer_list<_CharT> __l)
+ { return this->replace(__i1, __i2, __l.begin(), __l.end()); }
+#endif // __GXX_EXPERIMENTAL_CXX0X__
+
private:
template<class _Integer>
basic_string&
return _S_construct(__beg, __end, __a, _Tag());
}
- template<class _InIterator>
+ // _GLIBCXX_RESOLVE_LIB_DEFECTS
+ // 438. Ambiguity in the "do the right thing" clause
+ template<class _Integer>
static _CharT*
- _S_construct_aux(_InIterator __beg, _InIterator __end,
+ _S_construct_aux(_Integer __beg, _Integer __end,
const _Alloc& __a, __true_type)
- { return _S_construct(static_cast<size_type>(__beg),
+ { return _S_construct(static_cast<size_type>(__beg),
static_cast<value_type>(__end), __a); }
template<class _InIterator>
/**
* @brief Find last position of a C string.
* @param s C string to locate.
- * @param pos Index of character to start search at (default 0).
+ * @param pos Index of character to start search at (default end).
* @return Index of start of last occurrence.
*
* Starting from @a pos, searches backward for the value of @a s within
/**
* @brief Find last position of a character.
* @param c Character to locate.
- * @param pos Index of character to search back from (default 0).
+ * @param pos Index of character to search back from (default end).
* @return Index of last occurrence.
*
* Starting from @a pos, searches backward for @a c within this string.
/**
* @brief Find position of a character of C substring.
* @param s String containing characters to locate.
- * @param pos Index of character to search from (default 0).
+ * @param pos Index of character to search from.
* @param n Number of characters from s to search for.
* @return Index of first occurrence.
*
/**
* @brief Find last position of a character of C substring.
* @param s C string containing characters to locate.
- * @param pos Index of character to search back from (default end).
+ * @param pos Index of character to search back from.
* @param n Number of characters from s to search for.
* @return Index of last occurrence.
*
/**
* @brief Find last position of a character.
* @param c Character to locate.
- * @param pos Index of character to search back from (default 0).
+ * @param pos Index of character to search back from (default end).
* @return Index of last occurrence.
*
* Starting from @a pos, searches backward for @a c within this string.
/**
* @brief Find position of a character not in C substring.
* @param s C string containing characters to avoid.
- * @param pos Index of character to search from (default 0).
+ * @param pos Index of character to search from.
* @param n Number of characters from s to consider.
* @return Index of first occurrence.
*
/**
* @brief Find last position of a character not in string.
* @param str String containing characters to avoid.
- * @param pos Index of character to search from (default 0).
- * @return Index of first occurrence.
+ * @param pos Index of character to search back from (default end).
+ * @return Index of last occurrence.
*
* Starting from @a pos, searches backward for a character not
* contained in @a str within this string. If found, returns the index
/**
* @brief Find last position of a character not in C substring.
* @param s C string containing characters to avoid.
- * @param pos Index of character to search from (default 0).
+ * @param pos Index of character to search back from.
* @param n Number of characters from s to consider.
- * @return Index of first occurrence.
+ * @return Index of last occurrence.
*
* Starting from @a pos, searches backward for a character not
* contained in the first @a n characters of @a s within this string.
find_last_not_of(const _CharT* __s, size_type __pos,
size_type __n) const;
/**
- * @brief Find position of a character not in C string.
+ * @brief Find last position of a character not in C string.
* @param s C string containing characters to avoid.
- * @param pos Index of character to search from (default 0).
- * @return Index of first occurrence.
+ * @param pos Index of character to search back from (default end).
+ * @return Index of last occurrence.
*
* Starting from @a pos, searches backward for a character not
* contained in @a s within this string. If found, returns the index
/**
* @brief Find last position of a different character.
* @param c Character to avoid.
- * @param pos Index of character to search from (default 0).
- * @return Index of first occurrence.
+ * @param pos Index of character to search back from (default end).
+ * @return Index of last occurrence.
*
* Starting from @a pos, searches backward for a character other than
* @a c within this string. If found, returns the index where it was
int __r = traits_type::compare(_M_data(), __str.data(), __len);
if (!__r)
- __r = __size - __osize;
+ __r = _S_compare(__size, __osize);
return __r;
}
* result of the comparison is nonzero returns it, otherwise the shorter
* one is ordered first.
*
- * NB: s must have at least n2 characters, '\0' has no special
+ * NB: s must have at least n2 characters, '\\0' has no special
* meaning.
*/
int
const basic_string<_CharT, _Traits, _Alloc>& __rhs)
{ return __lhs.compare(__rhs) == 0; }
+ template<typename _CharT>
+ inline
+ typename __gnu_cxx::__enable_if<__is_char<_CharT>::__value, bool>::__type
+ operator==(const basic_string<_CharT>& __lhs,
+ const basic_string<_CharT>& __rhs)
+ { return (__lhs.size() == __rhs.size()
+ && !std::char_traits<_CharT>::compare(__lhs.data(), __rhs.data(),
+ __lhs.size())); }
+
/**
* @brief Test equivalence of C string and string.
* @param lhs C string.
inline bool
operator!=(const basic_string<_CharT, _Traits, _Alloc>& __lhs,
const basic_string<_CharT, _Traits, _Alloc>& __rhs)
- { return __rhs.compare(__lhs) != 0; }
+ { return !(__lhs == __rhs); }
/**
* @brief Test difference of C string and string.
inline bool
operator!=(const _CharT* __lhs,
const basic_string<_CharT, _Traits, _Alloc>& __rhs)
- { return __rhs.compare(__lhs) != 0; }
+ { return !(__lhs == __rhs); }
/**
* @brief Test difference of string and C string.
inline bool
operator!=(const basic_string<_CharT, _Traits, _Alloc>& __lhs,
const _CharT* __rhs)
- { return __lhs.compare(__rhs) != 0; }
+ { return !(__lhs == __rhs); }
// operator <
/**
* writing a C string.
*/
template<typename _CharT, typename _Traits, typename _Alloc>
- basic_ostream<_CharT, _Traits>&
+ inline basic_ostream<_CharT, _Traits>&
operator<<(basic_ostream<_CharT, _Traits>& __os,
- const basic_string<_CharT, _Traits, _Alloc>& __str);
+ const basic_string<_CharT, _Traits, _Alloc>& __str)
+ {
+ // _GLIBCXX_RESOLVE_LIB_DEFECTS
+ // 586. string inserter not a formatted function
+ return __ostream_insert(__os, __str.data(), __str.size());
+ }
/**
* @brief Read a line from stream into a string.
template<typename _CharT, typename _Traits, typename _Alloc>
inline basic_istream<_CharT, _Traits>&
getline(basic_istream<_CharT, _Traits>& __is,
- basic_string<_CharT, _Traits, _Alloc>& __str);
-
+ basic_string<_CharT, _Traits, _Alloc>& __str)
+ { return getline(__is, __str, __is.widen('\n')); }
+
template<>
basic_istream<char>&
getline(basic_istream<char>& __in, basic_string<char>& __str,
_GLIBCXX_END_NAMESPACE
+#if (defined(__GXX_EXPERIMENTAL_CXX0X__) && defined(_GLIBCXX_USE_C99) \
+ && !defined(_GLIBCXX_HAVE_BROKEN_VSWPRINTF))
+
+#include <ext/string_conversions.h>
+
+_GLIBCXX_BEGIN_NAMESPACE(std)
+
+ // 21.4 Numeric Conversions [string.conversions].
+ inline int
+ stoi(const string& __str, size_t* __idx = 0, int __base = 10)
+ { return __gnu_cxx::__stoa<long, int>(&std::strtol, "stoi", __str.c_str(),
+ __idx, __base); }
+
+ inline long
+ stol(const string& __str, size_t* __idx = 0, int __base = 10)
+ { return __gnu_cxx::__stoa(&std::strtol, "stol", __str.c_str(),
+ __idx, __base); }
+
+ inline unsigned long
+ stoul(const string& __str, size_t* __idx = 0, int __base = 10)
+ { return __gnu_cxx::__stoa(&std::strtoul, "stoul", __str.c_str(),
+ __idx, __base); }
+
+ inline long long
+ stoll(const string& __str, size_t* __idx = 0, int __base = 10)
+ { return __gnu_cxx::__stoa(&std::strtoll, "stoll", __str.c_str(),
+ __idx, __base); }
+
+ inline unsigned long long
+ stoull(const string& __str, size_t* __idx = 0, int __base = 10)
+ { return __gnu_cxx::__stoa(&std::strtoull, "stoull", __str.c_str(),
+ __idx, __base); }
+
+ // NB: strtof vs strtod.
+ inline float
+ stof(const string& __str, size_t* __idx = 0)
+ { return __gnu_cxx::__stoa(&std::strtof, "stof", __str.c_str(), __idx); }
+
+ inline double
+ stod(const string& __str, size_t* __idx = 0)
+ { return __gnu_cxx::__stoa(&std::strtod, "stod", __str.c_str(), __idx); }
+
+ inline long double
+ stold(const string& __str, size_t* __idx = 0)
+ { return __gnu_cxx::__stoa(&std::strtold, "stold", __str.c_str(), __idx); }
+
+ // NB: (v)snprintf vs sprintf.
+
+ // DR 1261.
+ inline string
+ to_string(int __val)
+ { return __gnu_cxx::__to_xstring<string>(&std::vsnprintf, 4 * sizeof(int),
+ "%d", __val); }
+
+ inline string
+ to_string(unsigned __val)
+ { return __gnu_cxx::__to_xstring<string>(&std::vsnprintf,
+ 4 * sizeof(unsigned),
+ "%u", __val); }
+
+ inline string
+ to_string(long __val)
+ { return __gnu_cxx::__to_xstring<string>(&std::vsnprintf, 4 * sizeof(long),
+ "%ld", __val); }
+
+ inline string
+ to_string(unsigned long __val)
+ { return __gnu_cxx::__to_xstring<string>(&std::vsnprintf,
+ 4 * sizeof(unsigned long),
+ "%lu", __val); }
+
+ inline string
+ to_string(long long __val)
+ { return __gnu_cxx::__to_xstring<string>(&std::vsnprintf,
+ 4 * sizeof(long long),
+ "%lld", __val); }
+
+ inline string
+ to_string(unsigned long long __val)
+ { return __gnu_cxx::__to_xstring<string>(&std::vsnprintf,
+ 4 * sizeof(unsigned long long),
+ "%llu", __val); }
+
+ inline string
+ to_string(float __val)
+ {
+ const int __n =
+ __gnu_cxx::__numeric_traits<float>::__max_exponent10 + 20;
+ return __gnu_cxx::__to_xstring<string>(&std::vsnprintf, __n,
+ "%f", __val);
+ }
+
+ inline string
+ to_string(double __val)
+ {
+ const int __n =
+ __gnu_cxx::__numeric_traits<double>::__max_exponent10 + 20;
+ return __gnu_cxx::__to_xstring<string>(&std::vsnprintf, __n,
+ "%f", __val);
+ }
+
+ inline string
+ to_string(long double __val)
+ {
+ const int __n =
+ __gnu_cxx::__numeric_traits<long double>::__max_exponent10 + 20;
+ return __gnu_cxx::__to_xstring<string>(&std::vsnprintf, __n,
+ "%Lf", __val);
+ }
+
+#ifdef _GLIBCXX_USE_WCHAR_T
+ inline int
+ stoi(const wstring& __str, size_t* __idx = 0, int __base = 10)
+ { return __gnu_cxx::__stoa<long, int>(&std::wcstol, "stoi", __str.c_str(),
+ __idx, __base); }
+
+ inline long
+ stol(const wstring& __str, size_t* __idx = 0, int __base = 10)
+ { return __gnu_cxx::__stoa(&std::wcstol, "stol", __str.c_str(),
+ __idx, __base); }
+
+ inline unsigned long
+ stoul(const wstring& __str, size_t* __idx = 0, int __base = 10)
+ { return __gnu_cxx::__stoa(&std::wcstoul, "stoul", __str.c_str(),
+ __idx, __base); }
+
+ inline long long
+ stoll(const wstring& __str, size_t* __idx = 0, int __base = 10)
+ { return __gnu_cxx::__stoa(&std::wcstoll, "stoll", __str.c_str(),
+ __idx, __base); }
+
+ inline unsigned long long
+ stoull(const wstring& __str, size_t* __idx = 0, int __base = 10)
+ { return __gnu_cxx::__stoa(&std::wcstoull, "stoull", __str.c_str(),
+ __idx, __base); }
+
+ // NB: wcstof vs wcstod.
+ inline float
+ stof(const wstring& __str, size_t* __idx = 0)
+ { return __gnu_cxx::__stoa(&std::wcstof, "stof", __str.c_str(), __idx); }
+
+ inline double
+ stod(const wstring& __str, size_t* __idx = 0)
+ { return __gnu_cxx::__stoa(&std::wcstod, "stod", __str.c_str(), __idx); }
+
+ inline long double
+ stold(const wstring& __str, size_t* __idx = 0)
+ { return __gnu_cxx::__stoa(&std::wcstold, "stold", __str.c_str(), __idx); }
+
+ // DR 1261.
+ inline wstring
+ to_wstring(int __val)
+ { return __gnu_cxx::__to_xstring<wstring>(&std::vswprintf, 4 * sizeof(int),
+ L"%d", __val); }
+
+ inline wstring
+ to_wstring(unsigned __val)
+ { return __gnu_cxx::__to_xstring<wstring>(&std::vswprintf,
+ 4 * sizeof(unsigned),
+ L"%u", __val); }
+
+ inline wstring
+ to_wstring(long __val)
+ { return __gnu_cxx::__to_xstring<wstring>(&std::vswprintf, 4 * sizeof(long),
+ L"%ld", __val); }
+
+ inline wstring
+ to_wstring(unsigned long __val)
+ { return __gnu_cxx::__to_xstring<wstring>(&std::vswprintf,
+ 4 * sizeof(unsigned long),
+ L"%lu", __val); }
+
+ inline wstring
+ to_wstring(long long __val)
+ { return __gnu_cxx::__to_xstring<wstring>(&std::vswprintf,
+ 4 * sizeof(long long),
+ L"%lld", __val); }
+
+ inline wstring
+ to_wstring(unsigned long long __val)
+ { return __gnu_cxx::__to_xstring<wstring>(&std::vswprintf,
+ 4 * sizeof(unsigned long long),
+ L"%llu", __val); }
+
+ inline wstring
+ to_wstring(float __val)
+ {
+ const int __n =
+ __gnu_cxx::__numeric_traits<float>::__max_exponent10 + 20;
+ return __gnu_cxx::__to_xstring<wstring>(&std::vswprintf, __n,
+ L"%f", __val);
+ }
+
+ inline wstring
+ to_wstring(double __val)
+ {
+ const int __n =
+ __gnu_cxx::__numeric_traits<double>::__max_exponent10 + 20;
+ return __gnu_cxx::__to_xstring<wstring>(&std::vswprintf, __n,
+ L"%f", __val);
+ }
+
+ inline wstring
+ to_wstring(long double __val)
+ {
+ const int __n =
+ __gnu_cxx::__numeric_traits<long double>::__max_exponent10 + 20;
+ return __gnu_cxx::__to_xstring<wstring>(&std::vswprintf, __n,
+ L"%Lf", __val);
+ }
+#endif
+
+_GLIBCXX_END_NAMESPACE
+
+#endif
+
#endif /* _BASIC_STRING_H */