cwctype
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// -*- C++ -*- forwarding header.
// Copyright (C) 1997-2022 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 3, or (at your option)
// any later version.
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
// 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.
// 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 include/cwctype
* This is a Standard C++ Library file. You should @c \#include this file
* in your programs, rather than any of the @a *.h implementation files.
*
* This is the C++ version of the Standard C Library header @c wctype.h,
* and its contents are (mostly) the same as that header, but are all
* contained in the namespace @c std (except for names which are defined
* as macros in C).
*/
//
// ISO C++ 14882: <cwctype>
//
#pragma GCC system_header
#include <bits/c++config.h>
#if _GLIBCXX_HAVE_WCTYPE_H
#if __GLIBC__ == 2 && __GLIBC_MINOR__ < 10
// Work around glibc BZ 9694
#include <stddef.h>
#endif
#include <wctype.h>
#endif // _GLIBCXX_HAVE_WCTYPE_H
#ifndef _GLIBCXX_CWCTYPE
#define _GLIBCXX_CWCTYPE 1
// Get rid of those macros defined in <wctype.h> in lieu of real functions.
#undef iswalnum
#undef iswalpha
#if _GLIBCXX_HAVE_ISWBLANK
# undef iswblank
#endif
#undef iswcntrl
#undef iswctype
#undef iswdigit
#undef iswgraph
#undef iswlower
#undef iswprint
#undef iswpunct
#undef iswspace
#undef iswupper
#undef iswxdigit
#undef towctrans
#undef towlower
#undef towupper
#undef wctrans
#undef wctype
#if _GLIBCXX_USE_WCHAR_T
namespace std
{
using ::wctrans_t;
using ::wctype_t;
using ::wint_t;
using ::iswalnum;
using ::iswalpha;
#if _GLIBCXX_HAVE_ISWBLANK
using ::iswblank;
#endif
using ::iswcntrl;
using ::iswctype;
using ::iswdigit;
using ::iswgraph;
using ::iswlower;
using ::iswprint;
using ::iswpunct;
using ::iswspace;
using ::iswupper;
using ::iswxdigit;
using ::towctrans;
using ::towlower;
using ::towupper;
using ::wctrans;
using ::wctype;
} // namespace
#endif //_GLIBCXX_USE_WCHAR_T
#endif // _GLIBCXX_CWCTYPE
c++config.h
std
ISO C++ entities toplevel namespace is std.