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1 // Wrapper for underlying C-language localization -*- C++ -*-
3 // Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007
4 // Free Software Foundation, Inc.
6 // This file is part of the GNU ISO C++ Library. This library is free
7 // software; you can redistribute it and/or modify it under the
8 // terms of the GNU General Public License as published by the
9 // Free Software Foundation; either version 2, or (at your option)
12 // This library is distributed in the hope that it will be useful,
13 // but WITHOUT ANY WARRANTY; without even the implied warranty of
14 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 // GNU General Public License for more details.
17 // You should have received a copy of the GNU General Public License along
18 // with this library; see the file COPYING. If not, write to the Free
19 // Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
22 // As a special exception, you may use this file as part of a free software
23 // library without restriction. Specifically, if other files instantiate
24 // templates or use macros or inline functions from this file, or you compile
25 // this file and link it with other files to produce an executable, this
26 // file does not by itself cause the resulting executable to be covered by
27 // the GNU General Public License. This exception does not however
28 // invalidate any other reasons why the executable file might be covered by
29 // the GNU General Public License.
32 * This is an internal header file, included by other library headers.
33 * You should not attempt to use it directly.
37 // ISO C++ 14882: 22.8 Standard locale categories.
40 // Written by Benjamin Kosnik <bkoz@redhat.com>
42 #ifndef _GLIBCXX_CXX_LOCALE_H
43 #define _GLIBCXX_CXX_LOCALE_H 1
45 #pragma GCC system_header
51 #define _GLIBCXX_NUM_CATEGORIES 0
53 _GLIBCXX_BEGIN_NAMESPACE(std
)
55 typedef int* __c_locale
;
57 // Convert numeric value of type double and long double to string and
58 // return length of string. If vsnprintf is available use it, otherwise
59 // fall back to the unsafe vsprintf which, in general, can be dangerous
60 // and should be avoided.
62 __convert_from_v(const __c_locale
&, char* __out
,
63 const int __size
__attribute__((__unused__
)),
64 const char* __fmt
, ...)
66 char* __old
= std::setlocale(LC_NUMERIC
, NULL
);
68 if (__builtin_strcmp(__old
, "C"))
70 const size_t __len
= __builtin_strlen(__old
) + 1;
71 __sav
= new char[__len
];
72 __builtin_memcpy(__sav
, __old
, __len
);
73 std::setlocale(LC_NUMERIC
, "C");
77 va_start(__args
, __fmt
);
79 #ifdef _GLIBCXX_USE_C99
80 const int __ret
= __builtin_vsnprintf(__out
, __size
, __fmt
, __args
);
82 const int __ret
= __builtin_vsprintf(__out
, __fmt
, __args
);
89 std::setlocale(LC_NUMERIC
, __sav
);
95 _GLIBCXX_END_NAMESPACE