1 // std::collate implementation details, generic version -*- 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 // ISO C++ 14882: 22.2.4.1.2 collate virtual functions
35 // Written by Benjamin Kosnik <bkoz@redhat.com>
40 _GLIBCXX_BEGIN_NAMESPACE(std)
42 // These are basically extensions to char_traits, and perhaps should
43 // be put there instead of here.
46 collate<char>::_M_compare(const char* __one, const char* __two) const
48 int __cmp = strcoll(__one, __two);
49 return (__cmp >> (8 * sizeof (int) - 2)) | (__cmp != 0);
54 collate<char>::_M_transform(char* __to, const char* __from,
56 { return strxfrm(__to, __from, __n); }
58 #ifdef _GLIBCXX_USE_WCHAR_T
61 collate<wchar_t>::_M_compare(const wchar_t* __one,
62 const wchar_t* __two) const
64 int __cmp = wcscoll(__one, __two);
65 return (__cmp >> (8 * sizeof (int) - 2)) | (__cmp != 0);
70 collate<wchar_t>::_M_transform(wchar_t* __to, const wchar_t* __from,
72 { return wcsxfrm(__to, __from, __n); }
75 _GLIBCXX_END_NAMESPACE