1 // std::collate implementation details, GNU version -*- C++ -*-
3 // Copyright (C) 2001-2022 Free Software Foundation, Inc.
5 // This file is part of the GNU ISO C++ Library. This library is free
6 // software; you can redistribute it and/or modify it under the
7 // terms of the GNU General Public License as published by the
8 // Free Software Foundation; either version 3, or (at your option)
11 // This library is distributed in the hope that it will be useful,
12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 // GNU General Public License for more details.
16 // Under Section 7 of GPL version 3, you are granted additional
17 // permissions described in the GCC Runtime Library Exception, version
18 // 3.1, as published by the Free Software Foundation.
20 // You should have received a copy of the GNU General Public License and
21 // a copy of the GCC Runtime Library Exception along with this program;
22 // see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
23 // <http://www.gnu.org/licenses/>.
26 // ISO C++ 14882: 22.2.4.1.2 collate virtual functions
29 // Written by Benjamin Kosnik <bkoz@redhat.com>
32 #include <bits/c++locale_internal.h>
34 namespace std
_GLIBCXX_VISIBILITY(default)
36 _GLIBCXX_BEGIN_NAMESPACE_VERSION
38 // These are basically extensions to char_traits, and perhaps should
39 // be put there instead of here.
42 collate
<char>::_M_compare(const char* __one
,
43 const char* __two
) const throw()
45 int __cmp
= __strcoll_l(__one
, __two
, _M_c_locale_collate
);
46 return (__cmp
>> (8 * sizeof (int) - 2)) | (__cmp
!= 0);
51 collate
<char>::_M_transform(char* __to
, const char* __from
,
52 size_t __n
) const throw()
53 { return __strxfrm_l(__to
, __from
, __n
, _M_c_locale_collate
); }
55 #ifdef _GLIBCXX_USE_WCHAR_T
58 collate
<wchar_t>::_M_compare(const wchar_t* __one
,
59 const wchar_t* __two
) const throw()
61 int __cmp
= __wcscoll_l(__one
, __two
, _M_c_locale_collate
);
62 return (__cmp
>> (8 * sizeof (int) - 2)) | (__cmp
!= 0);
67 collate
<wchar_t>::_M_transform(wchar_t* __to
, const wchar_t* __from
,
68 size_t __n
) const throw()
69 { return __wcsxfrm_l(__to
, __from
, __n
, _M_c_locale_collate
); }
72 _GLIBCXX_END_NAMESPACE_VERSION