1 // Wrapper for underlying C-language localization -*- C++ -*-
3 // Copyright (C) 2001, 2002, 2003, 2004, 2005
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 // ISO C++ 14882: 22.8 Standard locale categories.
35 // Written by Benjamin Kosnik <bkoz@redhat.com>
37 #include <cerrno> // For errno
38 #include <cmath> // For isinf, finite, finitef, fabs
39 #include <cstdlib> // For strof, strtold
42 #ifdef _GLIBCXX_HAVE_IEEEFP_H
48 // Specializations for all types used in num_get.
51 __convert_to_v(const char* __s
, float& __v
, ios_base::iostate
& __err
,
54 // Assumes __s formatted for "C" locale.
56 char* __old
= strdup(setlocale(LC_ALL
, NULL
));
57 setlocale(LC_ALL
, "C");
59 #if defined(_GLIBCXX_HAVE_STRTOF)
60 float __f
= strtof(__s
, &__sanity
);
62 double __d
= strtod(__s
, &__sanity
);
63 float __f
= static_cast<float>(__d
);
64 #ifdef _GLIBCXX_HAVE_FINITEF
67 #elif defined (_GLIBCXX_HAVE_FINITE)
68 if (!finite (static_cast<double> (__f
)))
70 #elif defined (_GLIBCXX_HAVE_ISINF)
71 if (isinf (static_cast<double> (__f
)))
74 if (fabs(__d
) > numeric_limits
<float>::max())
78 if (__sanity
!= __s
&& errno
!= ERANGE
)
81 __err
|= ios_base::failbit
;
82 setlocale(LC_ALL
, __old
);
88 __convert_to_v(const char* __s
, double& __v
, ios_base::iostate
& __err
,
91 // Assumes __s formatted for "C" locale.
93 char* __old
= strdup(setlocale(LC_ALL
, NULL
));
94 setlocale(LC_ALL
, "C");
96 double __d
= strtod(__s
, &__sanity
);
97 if (__sanity
!= __s
&& errno
!= ERANGE
)
100 __err
|= ios_base::failbit
;
101 setlocale(LC_ALL
, __old
);
107 __convert_to_v(const char* __s
, long double& __v
,
108 ios_base::iostate
& __err
, const __c_locale
&)
110 // Assumes __s formatted for "C" locale.
112 char* __old
= strdup(setlocale(LC_ALL
, NULL
));
113 setlocale(LC_ALL
, "C");
114 #if defined(_GLIBCXX_HAVE_STRTOLD)
116 long double __ld
= strtold(__s
, &__sanity
);
117 if (__sanity
!= __s
&& errno
!= ERANGE
)
120 typedef char_traits
<char>::int_type int_type
;
122 int __p
= sscanf(__s
, "%Lf", &__ld
);
123 if (__p
&& static_cast<int_type
>(__p
) != char_traits
<char>::eof()
128 __err
|= ios_base::failbit
;
129 setlocale(LC_ALL
, __old
);
134 locale::facet::_S_create_c_locale(__c_locale
& __cloc
, const char* __s
,
137 // Currently, the generic model only supports the "C" locale.
138 // See http://gcc.gnu.org/ml/libstdc++/2003-02/msg00345.html
140 if (strcmp(__s
, "C"))
141 __throw_runtime_error(__N("locale::facet::_S_create_c_locale "
146 locale::facet::_S_destroy_c_locale(__c_locale
& __cloc
)
150 locale::facet::_S_clone_c_locale(__c_locale
&)
151 { return __c_locale(); }
156 const char* const category_names
[6 + _GLIBCXX_NUM_CATEGORIES
] =
169 const char* const* const locale::_S_categories
= __gnu_cxx::category_names
;