<h2>Editing File: /usr/include/c++/8/iomanip</h2><form method='post'><textarea name='content' class='file-edit'>// Standard stream manipulators -*- C++ -*-

// Copyright (C) 1997-2018 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
// &lt;http://www.gnu.org/licenses/&gt;.

/** @file include/iomanip
 *  This is a Standard C++ Library header.
 */

//
// ISO C++ 14882: 27.6.3  Standard manipulators
//

#ifndef _GLIBCXX_IOMANIP
#define _GLIBCXX_IOMANIP 1

#pragma GCC system_header

#include &lt;bits/c++config.h&gt;
#include &lt;iosfwd&gt;
#include &lt;bits/ios_base.h&gt;

#if __cplusplus &gt;= 201103L
#include &lt;locale&gt;
#if __cplusplus &gt; 201103L
#include &lt;bits/quoted_string.h&gt;
#endif
#endif

namespace std _GLIBCXX_VISIBILITY(default)
{
_GLIBCXX_BEGIN_NAMESPACE_VERSION

  // [27.6.3] standard manipulators
  // Also see DR 183.

  struct _Resetiosflags { ios_base::fmtflags _M_mask; };

  /**
   *  @brief  Manipulator for @c setf.
   *  @param  __mask  A format flags mask.
   *
   *  Sent to a stream object, this manipulator resets the specified flags,
   *  via @e stream.setf(0,__mask).
  */
  inline _Resetiosflags
  resetiosflags(ios_base::fmtflags __mask)
  { return { __mask }; }

  template&lt;typename _CharT, typename _Traits&gt;
    inline basic_istream&lt;_CharT, _Traits&gt;&amp;
    operator&gt;&gt;(basic_istream&lt;_CharT, _Traits&gt;&amp; __is, _Resetiosflags __f)
    {
      __is.setf(ios_base::fmtflags(0), __f._M_mask);
      return __is;
    }

  template&lt;typename _CharT, typename _Traits&gt;
    inline basic_ostream&lt;_CharT, _Traits&gt;&amp;
    operator&lt;&lt;(basic_ostream&lt;_CharT, _Traits&gt;&amp; __os, _Resetiosflags __f)
    {
      __os.setf(ios_base::fmtflags(0), __f._M_mask);
      return __os;
    }


  struct _Setiosflags { ios_base::fmtflags _M_mask; };

  /**
   *  @brief  Manipulator for @c setf.
   *  @param  __mask  A format flags mask.
   *
   *  Sent to a stream object, this manipulator sets the format flags
   *  to @a __mask.
  */
  inline _Setiosflags
  setiosflags(ios_base::fmtflags __mask)
  { return { __mask }; }

  template&lt;typename _CharT, typename _Traits&gt;
    inline basic_istream&lt;_CharT, _Traits&gt;&amp;
    operator&gt;&gt;(basic_istream&lt;_CharT, _Traits&gt;&amp; __is, _Setiosflags __f)
    {
      __is.setf(__f._M_mask);
      return __is;
    }

  template&lt;typename _CharT, typename _Traits&gt;
    inline basic_ostream&lt;_CharT, _Traits&gt;&amp;
    operator&lt;&lt;(basic_ostream&lt;_CharT, _Traits&gt;&amp; __os, _Setiosflags __f)
    {
      __os.setf(__f._M_mask);
      return __os;
    }


  struct _Setbase { int _M_base; };

  /**
   *  @brief  Manipulator for @c setf.
   *  @param  __base  A numeric base.
   *
   *  Sent to a stream object, this manipulator changes the
   *  @c ios_base::basefield flags to @c oct, @c dec, or @c hex when @a base
   *  is 8, 10, or 16, accordingly, and to 0 if @a __base is any other value.
  */
  inline _Setbase
  setbase(int __base)
  { return { __base }; }

  template&lt;typename _CharT, typename _Traits&gt;
    inline basic_istream&lt;_CharT, _Traits&gt;&amp;
    operator&gt;&gt;(basic_istream&lt;_CharT, _Traits&gt;&amp; __is, _Setbase __f)
    {
      __is.setf(__f._M_base ==  8 ? ios_base::oct :
		__f._M_base == 10 ? ios_base::dec :
		__f._M_base == 16 ? ios_base::hex :
		ios_base::fmtflags(0), ios_base::basefield);
      return __is;
    }

  template&lt;typename _CharT, typename _Traits&gt;
    inline basic_ostream&lt;_CharT, _Traits&gt;&amp;
    operator&lt;&lt;(basic_ostream&lt;_CharT, _Traits&gt;&amp; __os, _Setbase __f)
    {
      __os.setf(__f._M_base ==  8 ? ios_base::oct :
		__f._M_base == 10 ? ios_base::dec :
		__f._M_base == 16 ? ios_base::hex :
		ios_base::fmtflags(0), ios_base::basefield);
      return __os;
    }


  template&lt;typename _CharT&gt;
    struct _Setfill { _CharT _M_c; };

  /**
   *  @brief  Manipulator for @c fill.
   *  @param  __c  The new fill character.
   *
   *  Sent to a stream object, this manipulator calls @c fill(__c) for that
   *  object.
  */
  template&lt;typename _CharT&gt;
    inline _Setfill&lt;_CharT&gt;
    setfill(_CharT __c)
    { return { __c }; }

  template&lt;typename _CharT, typename _Traits&gt;
    inline basic_istream&lt;_CharT, _Traits&gt;&amp;
    operator&gt;&gt;(basic_istream&lt;_CharT, _Traits&gt;&amp; __is, _Setfill&lt;_CharT&gt; __f)
    {
      __is.fill(__f._M_c);
      return __is;
    }

  template&lt;typename _CharT, typename _Traits&gt;
    inline basic_ostream&lt;_CharT, _Traits&gt;&amp;
    operator&lt;&lt;(basic_ostream&lt;_CharT, _Traits&gt;&amp; __os, _Setfill&lt;_CharT&gt; __f)
    {
      __os.fill(__f._M_c);
      return __os;
    }


  struct _Setprecision { int _M_n; };

  /**
   *  @brief  Manipulator for @c precision.
   *  @param  __n  The new precision.
   *
   *  Sent to a stream object, this manipulator calls @c precision(__n) for
   *  that object.
  */
  inline _Setprecision
  setprecision(int __n)
  { return { __n }; }

  template&lt;typename _CharT, typename _Traits&gt;
    inline basic_istream&lt;_CharT, _Traits&gt;&amp;
    operator&gt;&gt;(basic_istream&lt;_CharT, _Traits&gt;&amp; __is, _Setprecision __f)
    {
      __is.precision(__f._M_n);
      return __is;
    }

  template&lt;typename _CharT, typename _Traits&gt;
    inline basic_ostream&lt;_CharT, _Traits&gt;&amp;
    operator&lt;&lt;(basic_ostream&lt;_CharT, _Traits&gt;&amp; __os, _Setprecision __f)
    {
      __os.precision(__f._M_n);
      return __os;
    }


  struct _Setw { int _M_n; };

  /**
   *  @brief  Manipulator for @c width.
   *  @param  __n  The new width.
   *
   *  Sent to a stream object, this manipulator calls @c width(__n) for
   *  that object.
  */
  inline _Setw
  setw(int __n)
  { return { __n }; }

  template&lt;typename _CharT, typename _Traits&gt;
    inline basic_istream&lt;_CharT, _Traits&gt;&amp;
    operator&gt;&gt;(basic_istream&lt;_CharT, _Traits&gt;&amp; __is, _Setw __f)
    {
      __is.width(__f._M_n);
      return __is;
    }

  template&lt;typename _CharT, typename _Traits&gt;
    inline basic_ostream&lt;_CharT, _Traits&gt;&amp;
    operator&lt;&lt;(basic_ostream&lt;_CharT, _Traits&gt;&amp; __os, _Setw __f)
    {
      __os.width(__f._M_n);
      return __os;
    }

#if __cplusplus &gt;= 201103L

  template&lt;typename _MoneyT&gt;
    struct _Get_money { _MoneyT&amp; _M_mon; bool _M_intl; };

  /**
   *  @brief  Extended manipulator for extracting money.
   *  @param  __mon  Either long double or a specialization of @c basic_string.
   *  @param  __intl A bool indicating whether international format
   *                 is to be used.
   *
   *  Sent to a stream object, this manipulator extracts @a __mon.
  */
  template&lt;typename _MoneyT&gt;
    inline _Get_money&lt;_MoneyT&gt;
    get_money(_MoneyT&amp; __mon, bool __intl = false)
    { return { __mon, __intl }; }

  template&lt;typename _CharT, typename _Traits, typename _MoneyT&gt;
    basic_istream&lt;_CharT, _Traits&gt;&amp;
    operator&gt;&gt;(basic_istream&lt;_CharT, _Traits&gt;&amp; __is, _Get_money&lt;_MoneyT&gt; __f)
    {
      typename basic_istream&lt;_CharT, _Traits&gt;::sentry __cerb(__is, false);
      if (__cerb)
	{
	  ios_base::iostate __err = ios_base::goodbit;
	  __try
	    {
	      typedef istreambuf_iterator&lt;_CharT, _Traits&gt;   _Iter;
	      typedef money_get&lt;_CharT, _Iter&gt;               _MoneyGet;

	      const _MoneyGet&amp; __mg = use_facet&lt;_MoneyGet&gt;(__is.getloc());
	      __mg.get(_Iter(__is.rdbuf()), _Iter(), __f._M_intl,
		       __is, __err, __f._M_mon);
	    }
	  __catch(__cxxabiv1::__forced_unwind&amp;)
	    {
	      __is._M_setstate(ios_base::badbit);
	      __throw_exception_again;
	    }
	  __catch(...)
	    { __is._M_setstate(ios_base::badbit); }
	  if (__err)
	    __is.setstate(__err);
	}
      return __is;
    }


  template&lt;typename _MoneyT&gt;
    struct _Put_money { const _MoneyT&amp; _M_mon; bool _M_intl; };

  /**
   *  @brief  Extended manipulator for inserting money.
   *  @param  __mon  Either long double or a specialization of @c basic_string.
   *  @param  __intl A bool indicating whether international format
   *                 is to be used.
   *
   *  Sent to a stream object, this manipulator inserts @a __mon.
  */
  template&lt;typename _MoneyT&gt;
    inline _Put_money&lt;_MoneyT&gt;
    put_money(const _MoneyT&amp; __mon, bool __intl = false)
    { return { __mon, __intl }; }

  template&lt;typename _CharT, typename _Traits, typename _MoneyT&gt;
    basic_ostream&lt;_CharT, _Traits&gt;&amp;
    operator&lt;&lt;(basic_ostream&lt;_CharT, _Traits&gt;&amp; __os, _Put_money&lt;_MoneyT&gt; __f)
    {
      typename basic_ostream&lt;_CharT, _Traits&gt;::sentry __cerb(__os);
      if (__cerb)
	{
	  ios_base::iostate __err = ios_base::goodbit;
	  __try
	    {
	      typedef ostreambuf_iterator&lt;_CharT, _Traits&gt;   _Iter;
	      typedef money_put&lt;_CharT, _Iter&gt;               _MoneyPut;

	      const _MoneyPut&amp; __mp = use_facet&lt;_MoneyPut&gt;(__os.getloc());
	      if (__mp.put(_Iter(__os.rdbuf()), __f._M_intl, __os,
			   __os.fill(), __f._M_mon).failed())
		__err |= ios_base::badbit;
	    }
	  __catch(__cxxabiv1::__forced_unwind&amp;)
	    {
	      __os._M_setstate(ios_base::badbit);
	      __throw_exception_again;
	    }
	  __catch(...)
	    { __os._M_setstate(ios_base::badbit); }
	  if (__err)
	    __os.setstate(__err);
	}
      return __os;
    }

  template&lt;typename _CharT&gt;
    struct _Put_time
    {
      const std::tm* _M_tmb;
      const _CharT* _M_fmt;
    };

  /**
   *  @brief  Extended manipulator for formatting time.
   *
   *  This manipulator uses time_put::put to format time.
   *  [ext.manip]
   *
   *  @param __tmb  struct tm time data to format.
   *  @param __fmt  format string.
   */
  template&lt;typename _CharT&gt;
    inline _Put_time&lt;_CharT&gt;
    put_time(const std::tm* __tmb, const _CharT* __fmt)
    { return { __tmb, __fmt }; }

  template&lt;typename _CharT, typename _Traits&gt;
    basic_ostream&lt;_CharT, _Traits&gt;&amp;
    operator&lt;&lt;(basic_ostream&lt;_CharT, _Traits&gt;&amp; __os, _Put_time&lt;_CharT&gt; __f)
    {
      typename basic_ostream&lt;_CharT, _Traits&gt;::sentry __cerb(__os);
      if (__cerb)
        {
          ios_base::iostate __err = ios_base::goodbit;
          __try
            {
              typedef ostreambuf_iterator&lt;_CharT, _Traits&gt;   _Iter;
              typedef time_put&lt;_CharT, _Iter&gt;                _TimePut;

              const _CharT* const __fmt_end = __f._M_fmt +
                _Traits::length(__f._M_fmt);

              const _TimePut&amp; __mp = use_facet&lt;_TimePut&gt;(__os.getloc());
              if (__mp.put(_Iter(__os.rdbuf()), __os, __os.fill(),
                           __f._M_tmb, __f._M_fmt, __fmt_end).failed())
                __err |= ios_base::badbit;
            }
          __catch(__cxxabiv1::__forced_unwind&amp;)
            {
              __os._M_setstate(ios_base::badbit);
              __throw_exception_again;
            }
          __catch(...)
            { __os._M_setstate(ios_base::badbit); }
          if (__err)
            __os.setstate(__err);
        }
      return __os;
    }

  template&lt;typename _CharT&gt;
    struct _Get_time
    {
      std::tm*	    _M_tmb;
      const _CharT* _M_fmt;
    };

  /**
   *  @brief  Extended manipulator for extracting time.
   *
   *  This manipulator uses time_get::get to extract time.
   *  [ext.manip]
   *
   *  @param __tmb  struct to extract the time data to.
   *  @param __fmt  format string.
   */
  template&lt;typename _CharT&gt;
    inline _Get_time&lt;_CharT&gt;
    get_time(std::tm* __tmb, const _CharT* __fmt)
    { return { __tmb, __fmt }; }

  template&lt;typename _CharT, typename _Traits&gt;
    basic_istream&lt;_CharT, _Traits&gt;&amp;
    operator&gt;&gt;(basic_istream&lt;_CharT, _Traits&gt;&amp; __is, _Get_time&lt;_CharT&gt; __f)
    {
      typename basic_istream&lt;_CharT, _Traits&gt;::sentry __cerb(__is, false);
      if (__cerb)
        {
          ios_base::iostate __err = ios_base::goodbit;
          __try
            {
              typedef istreambuf_iterator&lt;_CharT, _Traits&gt;   _Iter;
              typedef time_get&lt;_CharT, _Iter&gt;                _TimeGet;

              const _CharT* const __fmt_end = __f._M_fmt +
                _Traits::length(__f._M_fmt);

              const _TimeGet&amp; __mg = use_facet&lt;_TimeGet&gt;(__is.getloc());
              __mg.get(_Iter(__is.rdbuf()), _Iter(), __is,
                       __err, __f._M_tmb, __f._M_fmt, __fmt_end);
            }
          __catch(__cxxabiv1::__forced_unwind&amp;)
            {
              __is._M_setstate(ios_base::badbit);
              __throw_exception_again;
            }
          __catch(...)
            { __is._M_setstate(ios_base::badbit); }
          if (__err)
            __is.setstate(__err);
        }
      return __is;
    }

#if __cplusplus &gt;= 201402L

#define __cpp_lib_quoted_string_io 201304

  /**
   * @brief Manipulator for quoted strings.
   * @param __string String to quote.
   * @param __delim  Character to quote string with.
   * @param __escape Escape character to escape itself or quote character.
   */
  template&lt;typename _CharT&gt;
    inline auto
    quoted(const _CharT* __string,
	   _CharT __delim = _CharT('&quot;'), _CharT __escape = _CharT('\\'))
    {
      return __detail::_Quoted_string&lt;const _CharT*, _CharT&gt;(__string, __delim,
							     __escape);
    }

  template&lt;typename _CharT, typename _Traits, typename _Alloc&gt;
    inline auto
    quoted(const basic_string&lt;_CharT, _Traits, _Alloc&gt;&amp; __string,
	   _CharT __delim = _CharT('&quot;'), _CharT __escape = _CharT('\\'))
    {
      return __detail::_Quoted_string&lt;
	const basic_string&lt;_CharT, _Traits, _Alloc&gt;&amp;, _CharT&gt;(
	    __string, __delim, __escape);
    }

  template&lt;typename _CharT, typename _Traits, typename _Alloc&gt;
    inline auto
    quoted(basic_string&lt;_CharT, _Traits, _Alloc&gt;&amp; __string,
	   _CharT __delim = _CharT('&quot;'), _CharT __escape = _CharT('\\'))
    {
      return __detail::_Quoted_string&lt;
	basic_string&lt;_CharT, _Traits, _Alloc&gt;&amp;, _CharT&gt;(
	    __string, __delim, __escape);
    }

#if __cplusplus &gt;= 201703L
  // _GLIBCXX_RESOLVE_LIB_DEFECTS
  // 2785. quoted should work with basic_string_view
  template&lt;typename _CharT, typename _Traits&gt;
    inline auto
    quoted(basic_string_view&lt;_CharT, _Traits&gt; __sv,
	   _CharT __delim = _CharT('&quot;'), _CharT __escape = _CharT('\\'))
    {
      return __detail::_Quoted_string&lt;
	basic_string_view&lt;_CharT, _Traits&gt;, _CharT&gt;(__sv, __delim, __escape);
    }
#endif // C++17
#endif // C++14

#endif // __cplusplus &gt;= 201103L

  // Inhibit implicit instantiations for required instantiations,
  // which are defined via explicit instantiations elsewhere.
  // NB:  This syntax is a GNU extension.
#if _GLIBCXX_EXTERN_TEMPLATE
  extern template ostream&amp; operator&lt;&lt;(ostream&amp;, _Setfill&lt;char&gt;);
  extern template ostream&amp; operator&lt;&lt;(ostream&amp;, _Setiosflags);
  extern template ostream&amp; operator&lt;&lt;(ostream&amp;, _Resetiosflags);
  extern template ostream&amp; operator&lt;&lt;(ostream&amp;, _Setbase);
  extern template ostream&amp; operator&lt;&lt;(ostream&amp;, _Setprecision);
  extern template ostream&amp; operator&lt;&lt;(ostream&amp;, _Setw);
  extern template istream&amp; operator&gt;&gt;(istream&amp;, _Setfill&lt;char&gt;);
  extern template istream&amp; operator&gt;&gt;(istream&amp;, _Setiosflags);
  extern template istream&amp; operator&gt;&gt;(istream&amp;, _Resetiosflags);
  extern template istream&amp; operator&gt;&gt;(istream&amp;, _Setbase);
  extern template istream&amp; operator&gt;&gt;(istream&amp;, _Setprecision);
  extern template istream&amp; operator&gt;&gt;(istream&amp;, _Setw);

#ifdef _GLIBCXX_USE_WCHAR_T
  extern template wostream&amp; operator&lt;&lt;(wostream&amp;, _Setfill&lt;wchar_t&gt;);
  extern template wostream&amp; operator&lt;&lt;(wostream&amp;, _Setiosflags);
  extern template wostream&amp; operator&lt;&lt;(wostream&amp;, _Resetiosflags);
  extern template wostream&amp; operator&lt;&lt;(wostream&amp;, _Setbase);
  extern template wostream&amp; operator&lt;&lt;(wostream&amp;, _Setprecision);
  extern template wostream&amp; operator&lt;&lt;(wostream&amp;, _Setw);
  extern template wistream&amp; operator&gt;&gt;(wistream&amp;, _Setfill&lt;wchar_t&gt;);
  extern template wistream&amp; operator&gt;&gt;(wistream&amp;, _Setiosflags);
  extern template wistream&amp; operator&gt;&gt;(wistream&amp;, _Resetiosflags);
  extern template wistream&amp; operator&gt;&gt;(wistream&amp;, _Setbase);
  extern template wistream&amp; operator&gt;&gt;(wistream&amp;, _Setprecision);
  extern template wistream&amp; operator&gt;&gt;(wistream&amp;, _Setw);
#endif
#endif

_GLIBCXX_END_NAMESPACE_VERSION
} // namespace

#endif /* _GLIBCXX_IOMANIP */
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