libstdc++-v3/src/c++98/ios_locale.cc

// Iostreams base classes -*- C++ -*-

// Copyright (C) 1997-2026 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/>.

//
// ISO C++ 14882: 27.4  Iostreams base classes
//

#include <ios>
#include <locale>

namespace std _GLIBCXX_VISIBILITY(default)
{
_GLIBCXX_BEGIN_NAMESPACE_VERSION

  // Called only by basic_ios<>::init.
  void
  ios_base::_M_init() throw()
  {
    // NB: May be called more than once
    _M_precision = 6;
    _M_width = 0;
    _M_flags = skipws | dec;
    _M_ios_locale = locale();
  }

  // 27.4.2.3  ios_base locale functions
  locale
  ios_base::imbue(const locale& __loc) throw()
  {
    locale __old = _M_ios_locale;
    _M_ios_locale = __loc;
    _M_call_callbacks(imbue_event);
    return __old;
  }

  // Explicit instantiations for basic_ios are done in src/c++11/ios.cc
  // and so do not include this member, which is only defined for C++98.
  template basic_ios<char>::operator void*() const;
#ifdef _GLIBCXX_USE_WCHAR_T
  template basic_ios<wchar_t>::operator void*() const;
#endif

_GLIBCXX_END_NAMESPACE_VERSION
} // namespace