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<a href="a00116.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> // Output streams -*- C++ -*-</div><div class="line"><a name="l00002"></a><span class="lineno"> 2</span> </div><div class="line"><a name="l00003"></a><span class="lineno"> 3</span> // Copyright (C) 1997-2018 Free Software Foundation, Inc.</div><div class="line"><a name="l00004"></a><span class="lineno"> 4</span> //</div><div class="line"><a name="l00005"></a><span class="lineno"> 5</span> // This file is part of the GNU ISO C++ Library. This library is free</div><div class="line"><a name="l00006"></a><span class="lineno"> 6</span> // software; you can redistribute it and/or modify it under the</div><div class="line"><a name="l00007"></a><span class="lineno"> 7</span> // terms of the GNU General Public License as published by the</div><div class="line"><a name="l00008"></a><span class="lineno"> 8</span> // Free Software Foundation; either version 3, or (at your option)</div><div class="line"><a name="l00009"></a><span class="lineno"> 9</span> // any later version.</div><div class="line"><a name="l00010"></a><span class="lineno"> 10</span> </div><div class="line"><a name="l00011"></a><span class="lineno"> 11</span> // This library is distributed in the hope that it will be useful,</div><div class="line"><a name="l00012"></a><span class="lineno"> 12</span> // but WITHOUT ANY WARRANTY; without even the implied warranty of</div><div class="line"><a name="l00013"></a><span class="lineno"> 13</span> // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the</div><div class="line"><a name="l00014"></a><span class="lineno"> 14</span> // GNU General Public License for more details.</div><div class="line"><a name="l00015"></a><span class="lineno"> 15</span> </div><div class="line"><a name="l00016"></a><span class="lineno"> 16</span> // Under Section 7 of GPL version 3, you are granted additional</div><div class="line"><a name="l00017"></a><span class="lineno"> 17</span> // permissions described in the GCC Runtime Library Exception, version</div><div class="line"><a name="l00018"></a><span class="lineno"> 18</span> // 3.1, as published by the Free Software Foundation.</div><div class="line"><a name="l00019"></a><span class="lineno"> 19</span> </div><div class="line"><a name="l00020"></a><span class="lineno"> 20</span> // You should have received a copy of the GNU General Public License and</div><div class="line"><a name="l00021"></a><span class="lineno"> 21</span> // a copy of the GCC Runtime Library Exception along with this program;</div><div class="line"><a name="l00022"></a><span class="lineno"> 22</span> // see the files COPYING3 and COPYING.RUNTIME respectively. If not, see</div><div class="line"><a name="l00023"></a><span class="lineno"> 23</span> // <http://www.gnu.org/licenses/>.</div><div class="line"><a name="l00024"></a><span class="lineno"> 24</span> </div><div class="line"><a name="l00025"></a><span class="lineno"> 25</span> /** @file include/ostream</div><div class="line"><a name="l00026"></a><span class="lineno"> 26</span>  * This is a Standard C++ Library header.</div><div class="line"><a name="l00027"></a><span class="lineno"> 27</span>  */</div><div class="line"><a name="l00028"></a><span class="lineno"> 28</span> </div><div class="line"><a name="l00029"></a><span class="lineno"> 29</span> //</div><div class="line"><a name="l00030"></a><span class="lineno"> 30</span> // ISO C++ 14882: 27.6.2 Output streams</div><div class="line"><a name="l00031"></a><span class="lineno"> 31</span> //</div><div class="line"><a name="l00032"></a><span class="lineno"> 32</span> </div><div class="line"><a name="l00033"></a><span class="lineno"> 33</span> #ifndef _GLIBCXX_OSTREAM</div><div class="line"><a name="l00034"></a><span class="lineno"> 34</span> #define _GLIBCXX_OSTREAM 1</div><div class="line"><a name="l00035"></a><span class="lineno"> 35</span> </div><div class="line"><a name="l00036"></a><span class="lineno"> 36</span> #pragma GCC system_header</div><div class="line"><a name="l00037"></a><span class="lineno"> 37</span> </div><div class="line"><a name="l00038"></a><span class="lineno"> 38</span> #include <ios></div><div class="line"><a name="l00039"></a><span class="lineno"> 39</span> #include <bits/ostream_insert.h></div><div class="line"><a name="l00040"></a><span class="lineno"> 40</span> </div><div class="line"><a name="l00041"></a><span class="lineno"> 41</span> namespace std _GLIBCXX_VISIBILITY(default)</div><div class="line"><a name="l00042"></a><span class="lineno"> 42</span> {</div><div class="line"><a name="l00043"></a><span class="lineno"> 43</span> _GLIBCXX_BEGIN_NAMESPACE_VERSION</div><div class="line"><a name="l00044"></a><span class="lineno"> 44</span> </div><div class="line"><a name="l00045"></a><span class="lineno"> 45</span>  /**</div><div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  * @brief Template class basic_ostream.</div><div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  * @ingroup io</div><div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  *</div><div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  * @tparam _CharT Type of character stream.</div><div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  * @tparam _Traits Traits for character type, defaults to</div><div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  * char_traits<_CharT>.</div><div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  *</div><div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  * This is the base class for all output streams. It provides text</div><div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  * formatting of all builtin types, and communicates with any class</div><div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  * derived from basic_streambuf to do the actual output.</div><div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  */</div><div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  template<typename _CharT, typename _Traits></div><div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  class basic_ostream : virtual public basic_ios<_CharT, _Traits></div><div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  {</div><div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  public:</div><div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  // Types (inherited from basic_ios):</div><div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  typedef _CharT char_type;</div><div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  typedef typename _Traits::int_type int_type;</div><div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  typedef typename _Traits::pos_type pos_type;</div><div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  typedef typename _Traits::off_type off_type;</div><div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  typedef _Traits traits_type;</div><div class="line"><a name="l00067"></a><span class="lineno"> 67</span> </div><div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  // Non-standard Types:</div><div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  typedef basic_streambuf<_CharT, _Traits> __streambuf_type;</div><div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  typedef basic_ios<_CharT, _Traits> __ios_type;</div><div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  typedef basic_ostream<_CharT, _Traits> __ostream_type;</div><div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  typedef num_put<_CharT, ostreambuf_iterator<_CharT, _Traits> ></div><div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  __num_put_type;</div><div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  typedef ctype<_CharT> __ctype_type;</div><div class="line"><a name="l00075"></a><span class="lineno"> 75</span> </div><div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  /**</div><div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  * @brief Base constructor.</div><div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  *</div><div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  * This ctor is almost never called by the user directly, rather from</div><div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  * derived classes' initialization lists, which pass a pointer to</div><div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  * their own stream buffer.</div><div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  */</div><div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  explicit</div><div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  basic_ostream(__streambuf_type* __sb)</div><div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  { this->init(__sb); }</div><div class="line"><a name="l00086"></a><span class="lineno"> 86</span> </div><div class="line"><a name="l00087"></a><span class="lineno"> 87</span>  /**</div><div class="line"><a name="l00088"></a><span class="lineno"> 88</span>  * @brief Base destructor.</div><div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  *</div><div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  * This does very little apart from providing a virtual base dtor.</div><div class="line"><a name="l00091"></a><span class="lineno"> 91</span>  */</div><div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  virtual</div><div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  ~basic_ostream() { }</div><div class="line"><a name="l00094"></a><span class="lineno"> 94</span> </div><div class="line"><a name="l00095"></a><span class="lineno"> 95</span>  /// Safe prefix/suffix operations.</div><div class="line"><a name="l00096"></a><span class="lineno"> 96</span>  class sentry;</div><div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  friend class sentry;</div><div class="line"><a name="l00098"></a><span class="lineno"> 98</span> </div><div class="line"><a name="l00099"></a><span class="lineno"> 99</span>  //@{</div><div class="line"><a name="l00100"></a><span class="lineno"> 100</span>  /**</div><div class="line"><a name="l00101"></a><span class="lineno"> 101</span>  * @brief Interface for manipulators.</div><div class="line"><a name="l00102"></a><span class="lineno"> 102</span>  *</div><div class="line"><a name="l00103"></a><span class="lineno"> 103</span>  * Manipulators such as @c std::endl and @c std::hex use these</div><div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  * functions in constructs like "std::cout << std::endl". For more</div><div class="line"><a name="l00105"></a><span class="lineno"> 105</span>  * information, see the iomanip header.</div><div class="line"><a name="l00106"></a><span class="lineno"> 106</span>  */</div><div class="line"><a name="l00107"></a><span class="lineno"> 107</span>  __ostream_type&</div><div class="line"><a name="l00108"></a><span class="lineno"> 108</span>  operator<<(__ostream_type& (*__pf)(__ostream_type&))</div><div class="line"><a name="l00109"></a><span class="lineno"> 109</span>  {</div><div class="line"><a name="l00110"></a><span class="lineno"> 110</span>  // _GLIBCXX_RESOLVE_LIB_DEFECTS</div><div class="line"><a name="l00111"></a><span class="lineno"> 111</span>  // DR 60. What is a formatted input function?</div><div class="line"><a name="l00112"></a><span class="lineno"> 112</span>  // The inserters for manipulators are *not* formatted output functions.</div><div class="line"><a name="l00113"></a><span class="lineno"> 113</span>  return __pf(*this);</div><div class="line"><a name="l00114"></a><span class="lineno"> 114</span>  }</div><div class="line"><a name="l00115"></a><span class="lineno"> 115</span> </div><div class="line"><a name="l00116"></a><span class="lineno"> 116</span>  __ostream_type&</div><div class="line"><a name="l00117"></a><span class="lineno"> 117</span>  operator<<(__ios_type& (*__pf)(__ios_type&))</div><div class="line"><a name="l00118"></a><span class="lineno"> 118</span>  {</div><div class="line"><a name="l00119"></a><span class="lineno"> 119</span>  // _GLIBCXX_RESOLVE_LIB_DEFECTS</div><div class="line"><a name="l00120"></a><span class="lineno"> 120</span>  // DR 60. What is a formatted input function?</div><div class="line"><a name="l00121"></a><span class="lineno"> 121</span>  // The inserters for manipulators are *not* formatted output functions.</div><div class="line"><a name="l00122"></a><span class="lineno"> 122</span>  __pf(*this);</div><div class="line"><a name="l00123"></a><span class="lineno"> 123</span>  return *this;</div><div class="line"><a name="l00124"></a><span class="lineno"> 124</span>  }</div><div class="line"><a name="l00125"></a><span class="lineno"> 125</span> </div><div class="line"><a name="l00126"></a><span class="lineno"> 126</span>  __ostream_type&</div><div class="line"><a name="l00127"></a><span class="lineno"> 127</span>  operator<<(ios_base& (*__pf) (ios_base&))</div><div class="line"><a name="l00128"></a><span class="lineno"> 128</span>  {</div><div class="line"><a name="l00129"></a><span class="lineno"> 129</span>  // _GLIBCXX_RESOLVE_LIB_DEFECTS</div><div class="line"><a name="l00130"></a><span class="lineno"> 130</span>  // DR 60. What is a formatted input function?</div><div class="line"><a name="l00131"></a><span class="lineno"> 131</span>  // The inserters for manipulators are *not* formatted output functions.</div><div class="line"><a name="l00132"></a><span class="lineno"> 132</span>  __pf(*this);</div><div class="line"><a name="l00133"></a><span class="lineno"> 133</span>  return *this;</div><div class="line"><a name="l00134"></a><span class="lineno"> 134</span>  }</div><div class="line"><a name="l00135"></a><span class="lineno"> 135</span>  //@}</div><div class="line"><a name="l00136"></a><span class="lineno"> 136</span> </div><div class="line"><a name="l00137"></a><span class="lineno"> 137</span>  //@{</div><div class="line"><a name="l00138"></a><span class="lineno"> 138</span>  /**</div><div class="line"><a name="l00139"></a><span class="lineno"> 139</span>  * @name Inserters</div><div class="line"><a name="l00140"></a><span class="lineno"> 140</span>  *</div><div class="line"><a name="l00141"></a><span class="lineno"> 141</span>  * All the @c operator<< functions (aka <em>formatted output</div><div class="line"><a name="l00142"></a><span class="lineno"> 142</span>  * functions</em>) have some common behavior. Each starts by</div><div class="line"><a name="l00143"></a><span class="lineno"> 143</span>  * constructing a temporary object of type std::basic_ostream::sentry.</div><div class="line"><a name="l00144"></a><span class="lineno"> 144</span>  * This can have several effects, concluding with the setting of a</div><div class="line"><a name="l00145"></a><span class="lineno"> 145</span>  * status flag; see the sentry documentation for more.</div><div class="line"><a name="l00146"></a><span class="lineno"> 146</span>  *</div><div class="line"><a name="l00147"></a><span class="lineno"> 147</span>  * If the sentry status is good, the function tries to generate</div><div class="line"><a name="l00148"></a><span class="lineno"> 148</span>  * whatever data is appropriate for the type of the argument.</div><div class="line"><a name="l00149"></a><span class="lineno"> 149</span>  *</div><div class="line"><a name="l00150"></a><span class="lineno"> 150</span>  * If an exception is thrown during insertion, ios_base::badbit</div><div class="line"><a name="l00151"></a><span class="lineno"> 151</span>  * will be turned on in the stream's error state without causing an</div><div class="line"><a name="l00152"></a><span class="lineno"> 152</span>  * ios_base::failure to be thrown. The original exception will then</div><div class="line"><a name="l00153"></a><span class="lineno"> 153</span>  * be rethrown.</div><div class="line"><a name="l00154"></a><span class="lineno"> 154</span>  */</div><div class="line"><a name="l00155"></a><span class="lineno"> 155</span> </div><div class="line"><a name="l00156"></a><span class="lineno"> 156</span>  //@{</div><div class="line"><a name="l00157"></a><span class="lineno"> 157</span>  /**</div><div class="line"><a name="l00158"></a><span class="lineno"> 158</span>  * @brief Integer arithmetic inserters</div><div class="line"><a name="l00159"></a><span class="lineno"> 159</span>  * @param __n A variable of builtin integral type.</div><div class="line"><a name="l00160"></a><span class="lineno"> 160</span>  * @return @c *this if successful</div><div class="line"><a name="l00161"></a><span class="lineno"> 161</span>  *</div><div class="line"><a name="l00162"></a><span class="lineno"> 162</span>  * These functions use the stream's current locale (specifically, the</div><div class="line"><a name="l00163"></a><span class="lineno"> 163</span>  * @c num_get facet) to perform numeric formatting.</div><div class="line"><a name="l00164"></a><span class="lineno"> 164</span>  */</div><div class="line"><a name="l00165"></a><span class="lineno"> 165</span>  __ostream_type&</div><div class="line"><a name="l00166"></a><span class="lineno"> 166</span>  operator<<(long __n)</div><div class="line"><a name="l00167"></a><span class="lineno"> 167</span>  { return _M_insert(__n); }</div><div class="line"><a name="l00168"></a><span class="lineno"> 168</span> </div><div class="line"><a name="l00169"></a><span class="lineno"> 169</span>  __ostream_type&</div><div class="line"><a name="l00170"></a><span class="lineno"> 170</span>  operator<<(unsigned long __n)</div><div class="line"><a name="l00171"></a><span class="lineno"> 171</span>  { return _M_insert(__n); }</div><div class="line"><a name="l00172"></a><span class="lineno"> 172</span> </div><div class="line"><a name="l00173"></a><span class="lineno"> 173</span>  __ostream_type&</div><div class="line"><a name="l00174"></a><span class="lineno"> 174</span>  operator<<(bool __n)</div><div class="line"><a name="l00175"></a><span class="lineno"> 175</span>  { return _M_insert(__n); }</div><div class="line"><a name="l00176"></a><span class="lineno"> 176</span> </div><div class="line"><a name="l00177"></a><span class="lineno"> 177</span>  __ostream_type&</div><div class="line"><a name="l00178"></a><span class="lineno"> 178</span>  operator<<(short __n);</div><div class="line"><a name="l00179"></a><span class="lineno"> 179</span> </div><div class="line"><a name="l00180"></a><span class="lineno"> 180</span>  __ostream_type&</div><div class="line"><a name="l00181"></a><span class="lineno"> 181</span>  operator<<(unsigned short __n)</div><div class="line"><a name="l00182"></a><span class="lineno"> 182</span>  {</div><div class="line"><a name="l00183"></a><span class="lineno"> 183</span>  // _GLIBCXX_RESOLVE_LIB_DEFECTS</div><div class="line"><a name="l00184"></a><span class="lineno"> 184</span>  // 117. basic_ostream uses nonexistent num_put member functions.</div><div class="line"><a name="l00185"></a><span class="lineno"> 185</span>  return _M_insert(static_cast<unsigned long>(__n));</div><div class="line"><a name="l00186"></a><span class="lineno"> 186</span>  }</div><div class="line"><a name="l00187"></a><span class="lineno"> 187</span> </div><div class="line"><a name="l00188"></a><span class="lineno"> 188</span>  __ostream_type&</div><div class="line"><a name="l00189"></a><span class="lineno"> 189</span>  operator<<(int __n);</div><div class="line"><a name="l00190"></a><span class="lineno"> 190</span> </div><div class="line"><a name="l00191"></a><span class="lineno"> 191</span>  __ostream_type&</div><div class="line"><a name="l00192"></a><span class="lineno"> 192</span>  operator<<(unsigned int __n)</div><div class="line"><a name="l00193"></a><span class="lineno"> 193</span>  {</div><div class="line"><a name="l00194"></a><span class="lineno"> 194</span>  // _GLIBCXX_RESOLVE_LIB_DEFECTS</div><div class="line"><a name="l00195"></a><span class="lineno"> 195</span>  // 117. basic_ostream uses nonexistent num_put member functions.</div><div class="line"><a name="l00196"></a><span class="lineno"> 196</span>  return _M_insert(static_cast<unsigned long>(__n));</div><div class="line"><a name="l00197"></a><span class="lineno"> 197</span>  }</div><div class="line"><a name="l00198"></a><span class="lineno"> 198</span> </div><div class="line"><a name="l00199"></a><span class="lineno"> 199</span> #ifdef _GLIBCXX_USE_LONG_LONG</div><div class="line"><a name="l00200"></a><span class="lineno"> 200</span>  __ostream_type&</div><div class="line"><a name="l00201"></a><span class="lineno"> 201</span>  operator<<(long long __n)</div><div class="line"><a name="l00202"></a><span class="lineno"> 202</span>  { return _M_insert(__n); }</div><div class="line"><a name="l00203"></a><span class="lineno"> 203</span> </div><div class="line"><a name="l00204"></a><span class="lineno"> 204</span>  __ostream_type&</div><div class="line"><a name="l00205"></a><span class="lineno"> 205</span>  operator<<(unsigned long long __n)</div><div class="line"><a name="l00206"></a><span class="lineno"> 206</span>  { return _M_insert(__n); }</div><div class="line"><a name="l00207"></a><span class="lineno"> 207</span> #endif</div><div class="line"><a name="l00208"></a><span class="lineno"> 208</span>  //@}</div><div class="line"><a name="l00209"></a><span class="lineno"> 209</span> </div><div class="line"><a name="l00210"></a><span class="lineno"> 210</span>  //@{</div><div class="line"><a name="l00211"></a><span class="lineno"> 211</span>  /**</div><div class="line"><a name="l00212"></a><span class="lineno"> 212</span>  * @brief Floating point arithmetic inserters</div><div class="line"><a name="l00213"></a><span class="lineno"> 213</span>  * @param __f A variable of builtin floating point type.</div><div class="line"><a name="l00214"></a><span class="lineno"> 214</span>  * @return @c *this if successful</div><div class="line"><a name="l00215"></a><span class="lineno"> 215</span>  *</div><div class="line"><a name="l00216"></a><span class="lineno"> 216</span>  * These functions use the stream's current locale (specifically, the</div><div class="line"><a name="l00217"></a><span class="lineno"> 217</span>  * @c num_get facet) to perform numeric formatting.</div><div class="line"><a name="l00218"></a><span class="lineno"> 218</span>  */</div><div class="line"><a name="l00219"></a><span class="lineno"> 219</span>  __ostream_type&</div><div class="line"><a name="l00220"></a><span class="lineno"> 220</span>  operator<<(double __f)</div><div class="line"><a name="l00221"></a><span class="lineno"> 221</span>  { return _M_insert(__f); }</div><div class="line"><a name="l00222"></a><span class="lineno"> 222</span> </div><div class="line"><a name="l00223"></a><span class="lineno"> 223</span>  __ostream_type&</div><div class="line"><a name="l00224"></a><span class="lineno"> 224</span>  operator<<(float __f)</div><div class="line"><a name="l00225"></a><span class="lineno"> 225</span>  {</div><div class="line"><a name="l00226"></a><span class="lineno"> 226</span>  // _GLIBCXX_RESOLVE_LIB_DEFECTS</div><div class="line"><a name="l00227"></a><span class="lineno"> 227</span>  // 117. basic_ostream uses nonexistent num_put member functions.</div><div class="line"><a name="l00228"></a><span class="lineno"> 228</span>  return _M_insert(static_cast<double>(__f));</div><div class="line"><a name="l00229"></a><span class="lineno"> 229</span>  }</div><div class="line"><a name="l00230"></a><span class="lineno"> 230</span> </div><div class="line"><a name="l00231"></a><span class="lineno"> 231</span>  __ostream_type&</div><div class="line"><a name="l00232"></a><span class="lineno"> 232</span>  operator<<(long double __f)</div><div class="line"><a name="l00233"></a><span class="lineno"> 233</span>  { return _M_insert(__f); }</div><div class="line"><a name="l00234"></a><span class="lineno"> 234</span>  //@}</div><div class="line"><a name="l00235"></a><span class="lineno"> 235</span> </div><div class="line"><a name="l00236"></a><span class="lineno"> 236</span>  /**</div><div class="line"><a name="l00237"></a><span class="lineno"> 237</span>  * @brief Pointer arithmetic inserters</div><div class="line"><a name="l00238"></a><span class="lineno"> 238</span>  * @param __p A variable of pointer type.</div><div class="line"><a name="l00239"></a><span class="lineno"> 239</span>  * @return @c *this if successful</div><div class="line"><a name="l00240"></a><span class="lineno"> 240</span>  *</div><div class="line"><a name="l00241"></a><span class="lineno"> 241</span>  * These functions use the stream's current locale (specifically, the</div><div class="line"><a name="l00242"></a><span class="lineno"> 242</span>  * @c num_get facet) to perform numeric formatting.</div><div class="line"><a name="l00243"></a><span class="lineno"> 243</span>  */</div><div class="line"><a name="l00244"></a><span class="lineno"> 244</span>  __ostream_type&</div><div class="line"><a name="l00245"></a><span class="lineno"> 245</span>  operator<<(const void* __p)</div><div class="line"><a name="l00246"></a><span class="lineno"> 246</span>  { return _M_insert(__p); }</div><div class="line"><a name="l00247"></a><span class="lineno"> 247</span> </div><div class="line"><a name="l00248"></a><span class="lineno"> 248</span>  /**</div><div class="line"><a name="l00249"></a><span class="lineno"> 249</span>  * @brief Extracting from another streambuf.</div><div class="line"><a name="l00250"></a><span class="lineno"> 250</span>  * @param __sb A pointer to a streambuf</div><div class="line"><a name="l00251"></a><span class="lineno"> 251</span>  *</div><div class="line"><a name="l00252"></a><span class="lineno"> 252</span>  * This function behaves like one of the basic arithmetic extractors,</div><div class="line"><a name="l00253"></a><span class="lineno"> 253</span>  * in that it also constructs a sentry object and has the same error</div><div class="line"><a name="l00254"></a><span class="lineno"> 254</span>  * handling behavior.</div><div class="line"><a name="l00255"></a><span class="lineno"> 255</span>  *</div><div class="line"><a name="l00256"></a><span class="lineno"> 256</span>  * If @p __sb is NULL, the stream will set failbit in its error state.</div><div class="line"><a name="l00257"></a><span class="lineno"> 257</span>  *</div><div class="line"><a name="l00258"></a><span class="lineno"> 258</span>  * Characters are extracted from @p __sb and inserted into @c *this</div><div class="line"><a name="l00259"></a><span class="lineno"> 259</span>  * until one of the following occurs:</div><div class="line"><a name="l00260"></a><span class="lineno"> 260</span>  *</div><div class="line"><a name="l00261"></a><span class="lineno"> 261</span>  * - the input stream reaches end-of-file,</div><div class="line"><a name="l00262"></a><span class="lineno"> 262</span>  * - insertion into the output sequence fails (in this case, the</div><div class="line"><a name="l00263"></a><span class="lineno"> 263</span>  * character that would have been inserted is not extracted), or</div><div class="line"><a name="l00264"></a><span class="lineno"> 264</span>  * - an exception occurs while getting a character from @p __sb, which</div><div class="line"><a name="l00265"></a><span class="lineno"> 265</span>  * sets failbit in the error state</div><div class="line"><a name="l00266"></a><span class="lineno"> 266</span>  *</div><div class="line"><a name="l00267"></a><span class="lineno"> 267</span>  * If the function inserts no characters, failbit is set.</div><div class="line"><a name="l00268"></a><span class="lineno"> 268</span>  */</div><div class="line"><a name="l00269"></a><span class="lineno"> 269</span>  __ostream_type&</div><div class="line"><a name="l00270"></a><span class="lineno"> 270</span>  operator<<(__streambuf_type* __sb);</div><div class="line"><a name="l00271"></a><span class="lineno"> 271</span>  //@}</div><div class="line"><a name="l00272"></a><span class="lineno"> 272</span> </div><div class="line"><a name="l00273"></a><span class="lineno"> 273</span>  //@{</div><div class="line"><a name="l00274"></a><span class="lineno"> 274</span>  /**</div><div class="line"><a name="l00275"></a><span class="lineno"> 275</span>  * @name Unformatted Output Functions</div><div class="line"><a name="l00276"></a><span class="lineno"> 276</span>  *</div><div class="line"><a name="l00277"></a><span class="lineno"> 277</span>  * All the unformatted output functions have some common behavior.</div><div class="line"><a name="l00278"></a><span class="lineno"> 278</span>  * Each starts by constructing a temporary object of type</div><div class="line"><a name="l00279"></a><span class="lineno"> 279</span>  * std::basic_ostream::sentry. This has several effects, concluding</div><div class="line"><a name="l00280"></a><span class="lineno"> 280</span>  * with the setting of a status flag; see the sentry documentation</div><div class="line"><a name="l00281"></a><span class="lineno"> 281</span>  * for more.</div><div class="line"><a name="l00282"></a><span class="lineno"> 282</span>  *</div><div class="line"><a name="l00283"></a><span class="lineno"> 283</span>  * If the sentry status is good, the function tries to generate</div><div class="line"><a name="l00284"></a><span class="lineno"> 284</span>  * whatever data is appropriate for the type of the argument.</div><div class="line"><a name="l00285"></a><span class="lineno"> 285</span>  *</div><div class="line"><a name="l00286"></a><span class="lineno"> 286</span>  * If an exception is thrown during insertion, ios_base::badbit</div><div class="line"><a name="l00287"></a><span class="lineno"> 287</span>  * will be turned on in the stream's error state. If badbit is on in</div><div class="line"><a name="l00288"></a><span class="lineno"> 288</span>  * the stream's exceptions mask, the exception will be rethrown</div><div class="line"><a name="l00289"></a><span class="lineno"> 289</span>  * without completing its actions.</div><div class="line"><a name="l00290"></a><span class="lineno"> 290</span>  */</div><div class="line"><a name="l00291"></a><span class="lineno"> 291</span> </div><div class="line"><a name="l00292"></a><span class="lineno"> 292</span>  /**</div><div class="line"><a name="l00293"></a><span class="lineno"> 293</span>  * @brief Simple insertion.</div><div class="line"><a name="l00294"></a><span class="lineno"> 294</span>  * @param __c The character to insert.</div><div class="line"><a name="l00295"></a><span class="lineno"> 295</span>  * @return *this</div><div class="line"><a name="l00296"></a><span class="lineno"> 296</span>  *</div><div class="line"><a name="l00297"></a><span class="lineno"> 297</span>  * Tries to insert @p __c.</div><div class="line"><a name="l00298"></a><span class="lineno"> 298</span>  *</div><div class="line"><a name="l00299"></a><span class="lineno"> 299</span>  * @note This function is not overloaded on signed char and</div><div class="line"><a name="l00300"></a><span class="lineno"> 300</span>  * unsigned char.</div><div class="line"><a name="l00301"></a><span class="lineno"> 301</span>  */</div><div class="line"><a name="l00302"></a><span class="lineno"> 302</span>  __ostream_type&</div><div class="line"><a name="l00303"></a><span class="lineno"> 303</span>  put(char_type __c);</div><div class="line"><a name="l00304"></a><span class="lineno"> 304</span> </div><div class="line"><a name="l00305"></a><span class="lineno"> 305</span>  /**</div><div class="line"><a name="l00306"></a><span class="lineno"> 306</span>  * @brief Core write functionality, without sentry.</div><div class="line"><a name="l00307"></a><span class="lineno"> 307</span>  * @param __s The array to insert.</div><div class="line"><a name="l00308"></a><span class="lineno"> 308</span>  * @param __n Maximum number of characters to insert.</div><div class="line"><a name="l00309"></a><span class="lineno"> 309</span>  */</div><div class="line"><a name="l00310"></a><span class="lineno"> 310</span>  void</div><div class="line"><a name="l00311"></a><span class="lineno"> 311</span>  _M_write(const char_type* __s, streamsize __n)</div><div class="line"><a name="l00312"></a><span class="lineno"> 312</span>  {</div><div class="line"><a name="l00313"></a><span class="lineno"> 313</span>  const streamsize __put = this->rdbuf()->sputn(__s, __n);</div><div class="line"><a name="l00314"></a><span class="lineno"> 314</span>  if (__put != __n)</div><div class="line"><a name="l00315"></a><span class="lineno"> 315</span>  this->setstate(ios_base::badbit);</div><div class="line"><a name="l00316"></a><span class="lineno"> 316</span>  }</div><div class="line"><a name="l00317"></a><span class="lineno"> 317</span> </div><div class="line"><a name="l00318"></a><span class="lineno"> 318</span>  /**</div><div class="line"><a name="l00319"></a><span class="lineno"> 319</span>  * @brief Character string insertion.</div><div class="line"><a name="l00320"></a><span class="lineno"> 320</span>  * @param __s The array to insert.</div><div class="line"><a name="l00321"></a><span class="lineno"> 321</span>  * @param __n Maximum number of characters to insert.</div><div class="line"><a name="l00322"></a><span class="lineno"> 322</span>  * @return *this</div><div class="line"><a name="l00323"></a><span class="lineno"> 323</span>  *</div><div class="line"><a name="l00324"></a><span class="lineno"> 324</span>  * Characters are copied from @p __s and inserted into the stream until</div><div class="line"><a name="l00325"></a><span class="lineno"> 325</span>  * one of the following happens:</div><div class="line"><a name="l00326"></a><span class="lineno"> 326</span>  *</div><div class="line"><a name="l00327"></a><span class="lineno"> 327</span>  * - @p __n characters are inserted</div><div class="line"><a name="l00328"></a><span class="lineno"> 328</span>  * - inserting into the output sequence fails (in this case, badbit</div><div class="line"><a name="l00329"></a><span class="lineno"> 329</span>  * will be set in the stream's error state)</div><div class="line"><a name="l00330"></a><span class="lineno"> 330</span>  *</div><div class="line"><a name="l00331"></a><span class="lineno"> 331</span>  * @note This function is not overloaded on signed char and</div><div class="line"><a name="l00332"></a><span class="lineno"> 332</span>  * unsigned char.</div><div class="line"><a name="l00333"></a><span class="lineno"> 333</span>  */</div><div class="line"><a name="l00334"></a><span class="lineno"> 334</span>  __ostream_type&</div><div class="line"><a name="l00335"></a><span class="lineno"> 335</span>  write(const char_type* __s, streamsize __n);</div><div class="line"><a name="l00336"></a><span class="lineno"> 336</span>  //@}</div><div class="line"><a name="l00337"></a><span class="lineno"> 337</span> </div><div class="line"><a name="l00338"></a><span class="lineno"> 338</span>  /**</div><div class="line"><a name="l00339"></a><span class="lineno"> 339</span>  * @brief Synchronizing the stream buffer.</div><div class="line"><a name="l00340"></a><span class="lineno"> 340</span>  * @return *this</div><div class="line"><a name="l00341"></a><span class="lineno"> 341</span>  *</div><div class="line"><a name="l00342"></a><span class="lineno"> 342</span>  * If @c rdbuf() is a null pointer, changes nothing.</div><div class="line"><a name="l00343"></a><span class="lineno"> 343</span>  *</div><div class="line"><a name="l00344"></a><span class="lineno"> 344</span>  * Otherwise, calls @c rdbuf()->pubsync(), and if that returns -1,</div><div class="line"><a name="l00345"></a><span class="lineno"> 345</span>  * sets badbit.</div><div class="line"><a name="l00346"></a><span class="lineno"> 346</span>  */</div><div class="line"><a name="l00347"></a><span class="lineno"> 347</span>  __ostream_type&</div><div class="line"><a name="l00348"></a><span class="lineno"> 348</span>  flush();</div><div class="line"><a name="l00349"></a><span class="lineno"> 349</span> </div><div class="line"><a name="l00350"></a><span class="lineno"> 350</span>  /**</div><div class="line"><a name="l00351"></a><span class="lineno"> 351</span>  * @brief Getting the current write position.</div><div class="line"><a name="l00352"></a><span class="lineno"> 352</span>  * @return A file position object.</div><div class="line"><a name="l00353"></a><span class="lineno"> 353</span>  *</div><div class="line"><a name="l00354"></a><span class="lineno"> 354</span>  * If @c fail() is not false, returns @c pos_type(-1) to indicate</div><div class="line"><a name="l00355"></a><span class="lineno"> 355</span>  * failure. Otherwise returns @c rdbuf()->pubseekoff(0,cur,out).</div><div class="line"><a name="l00356"></a><span class="lineno"> 356</span>  */</div><div class="line"><a name="l00357"></a><span class="lineno"> 357</span>  pos_type</div><div class="line"><a name="l00358"></a><span class="lineno"> 358</span>  tellp();</div><div class="line"><a name="l00359"></a><span class="lineno"> 359</span> </div><div class="line"><a name="l00360"></a><span class="lineno"> 360</span>  /**</div><div class="line"><a name="l00361"></a><span class="lineno"> 361</span>  * @brief Changing the current write position.</div><div class="line"><a name="l00362"></a><span class="lineno"> 362</span>  * @param __pos A file position object.</div><div class="line"><a name="l00363"></a><span class="lineno"> 363</span>  * @return *this</div><div class="line"><a name="l00364"></a><span class="lineno"> 364</span>  *</div><div class="line"><a name="l00365"></a><span class="lineno"> 365</span>  * If @c fail() is not true, calls @c rdbuf()->pubseekpos(pos). If</div><div class="line"><a name="l00366"></a><span class="lineno"> 366</span>  * that function fails, sets failbit.</div><div class="line"><a name="l00367"></a><span class="lineno"> 367</span>  */</div><div class="line"><a name="l00368"></a><span class="lineno"> 368</span>  __ostream_type&</div><div class="line"><a name="l00369"></a><span class="lineno"> 369</span>  seekp(pos_type);</div><div class="line"><a name="l00370"></a><span class="lineno"> 370</span> </div><div class="line"><a name="l00371"></a><span class="lineno"> 371</span>  /**</div><div class="line"><a name="l00372"></a><span class="lineno"> 372</span>  * @brief Changing the current write position.</div><div class="line"><a name="l00373"></a><span class="lineno"> 373</span>  * @param __off A file offset object.</div><div class="line"><a name="l00374"></a><span class="lineno"> 374</span>  * @param __dir The direction in which to seek.</div><div class="line"><a name="l00375"></a><span class="lineno"> 375</span>  * @return *this</div><div class="line"><a name="l00376"></a><span class="lineno"> 376</span>  *</div><div class="line"><a name="l00377"></a><span class="lineno"> 377</span>  * If @c fail() is not true, calls @c rdbuf()->pubseekoff(off,dir).</div><div class="line"><a name="l00378"></a><span class="lineno"> 378</span>  * If that function fails, sets failbit.</div><div class="line"><a name="l00379"></a><span class="lineno"> 379</span>  */</div><div class="line"><a name="l00380"></a><span class="lineno"> 380</span>  __ostream_type&</div><div class="line"><a name="l00381"></a><span class="lineno"> 381</span>  seekp(off_type, ios_base::seekdir);</div><div class="line"><a name="l00382"></a><span class="lineno"> 382</span> </div><div class="line"><a name="l00383"></a><span class="lineno"> 383</span>  protected:</div><div class="line"><a name="l00384"></a><span class="lineno"> 384</span>  basic_ostream()</div><div class="line"><a name="l00385"></a><span class="lineno"> 385</span>  { this->init(0); }</div><div class="line"><a name="l00386"></a><span class="lineno"> 386</span> </div><div class="line"><a name="l00387"></a><span class="lineno"> 387</span> #if __cplusplus >= 201103L</div><div class="line"><a name="l00388"></a><span class="lineno"> 388</span>  // Non-standard constructor that does not call init()</div><div class="line"><a name="l00389"></a><span class="lineno"> 389</span>  basic_ostream(basic_iostream<_CharT, _Traits>&) { }</div><div class="line"><a name="l00390"></a><span class="lineno"> 390</span> </div><div class="line"><a name="l00391"></a><span class="lineno"> 391</span>  basic_ostream(const basic_ostream&) = delete;</div><div class="line"><a name="l00392"></a><span class="lineno"> 392</span> </div><div class="line"><a name="l00393"></a><span class="lineno"> 393</span>  basic_ostream(basic_ostream&& __rhs)</div><div class="line"><a name="l00394"></a><span class="lineno"> 394</span>  : __ios_type()</div><div class="line"><a name="l00395"></a><span class="lineno"> 395</span>  { __ios_type::move(__rhs); }</div><div class="line"><a name="l00396"></a><span class="lineno"> 396</span> </div><div class="line"><a name="l00397"></a><span class="lineno"> 397</span>  // 27.7.3.3 Assign/swap</div><div class="line"><a name="l00398"></a><span class="lineno"> 398</span> </div><div class="line"><a name="l00399"></a><span class="lineno"> 399</span>  basic_ostream& operator=(const basic_ostream&) = delete;</div><div class="line"><a name="l00400"></a><span class="lineno"> 400</span> </div><div class="line"><a name="l00401"></a><span class="lineno"> 401</span>  basic_ostream&</div><div class="line"><a name="l00402"></a><span class="lineno"> 402</span>  operator=(basic_ostream&& __rhs)</div><div class="line"><a name="l00403"></a><span class="lineno"> 403</span>  {</div><div class="line"><a name="l00404"></a><span class="lineno"> 404</span>  swap(__rhs);</div><div class="line"><a name="l00405"></a><span class="lineno"> 405</span>  return *this;</div><div class="line"><a name="l00406"></a><span class="lineno"> 406</span>  }</div><div class="line"><a name="l00407"></a><span class="lineno"> 407</span> </div><div class="line"><a name="l00408"></a><span class="lineno"> 408</span>  void</div><div class="line"><a name="l00409"></a><span class="lineno"> 409</span>  swap(basic_ostream& __rhs)</div><div class="line"><a name="l00410"></a><span class="lineno"> 410</span>  { __ios_type::swap(__rhs); }</div><div class="line"><a name="l00411"></a><span class="lineno"> 411</span> #endif</div><div class="line"><a name="l00412"></a><span class="lineno"> 412</span> </div><div class="line"><a name="l00413"></a><span class="lineno"> 413</span>  template<typename _ValueT></div><div class="line"><a name="l00414"></a><span class="lineno"> 414</span>  __ostream_type&</div><div class="line"><a name="l00415"></a><span class="lineno"> 415</span>  _M_insert(_ValueT __v);</div><div class="line"><a name="l00416"></a><span class="lineno"> 416</span>  };</div><div class="line"><a name="l00417"></a><span class="lineno"> 417</span> </div><div class="line"><a name="l00418"></a><span class="lineno"> 418</span>  /**</div><div class="line"><a name="l00419"></a><span class="lineno"> 419</span>  * @brief Performs setup work for output streams.</div><div class="line"><a name="l00420"></a><span class="lineno"> 420</span>  *</div><div class="line"><a name="l00421"></a><span class="lineno"> 421</span>  * Objects of this class are created before all of the standard</div><div class="line"><a name="l00422"></a><span class="lineno"> 422</span>  * inserters are run. It is responsible for <em>exception-safe prefix and</div><div class="line"><a name="l00423"></a><span class="lineno"> 423</span>  * suffix operations</em>.</div><div class="line"><a name="l00424"></a><span class="lineno"> 424</span>  */</div><div class="line"><a name="l00425"></a><span class="lineno"> 425</span>  template <typename _CharT, typename _Traits></div><div class="line"><a name="l00426"></a><span class="lineno"> 426</span>  class basic_ostream<_CharT, _Traits>::sentry</div><div class="line"><a name="l00427"></a><span class="lineno"> 427</span>  {</div><div class="line"><a name="l00428"></a><span class="lineno"> 428</span>  // Data Members.</div><div class="line"><a name="l00429"></a><span class="lineno"> 429</span>  bool _M_ok;</div><div class="line"><a name="l00430"></a><span class="lineno"> 430</span>  basic_ostream<_CharT, _Traits>& _M_os;</div><div class="line"><a name="l00431"></a><span class="lineno"> 431</span> </div><div class="line"><a name="l00432"></a><span class="lineno"> 432</span>  public:</div><div class="line"><a name="l00433"></a><span class="lineno"> 433</span>  /**</div><div class="line"><a name="l00434"></a><span class="lineno"> 434</span>  * @brief The constructor performs preparatory work.</div><div class="line"><a name="l00435"></a><span class="lineno"> 435</span>  * @param __os The output stream to guard.</div><div class="line"><a name="l00436"></a><span class="lineno"> 436</span>  *</div><div class="line"><a name="l00437"></a><span class="lineno"> 437</span>  * If the stream state is good (@a __os.good() is true), then if the</div><div class="line"><a name="l00438"></a><span class="lineno"> 438</span>  * stream is tied to another output stream, @c is.tie()->flush()</div><div class="line"><a name="l00439"></a><span class="lineno"> 439</span>  * is called to synchronize the output sequences.</div><div class="line"><a name="l00440"></a><span class="lineno"> 440</span>  *</div><div class="line"><a name="l00441"></a><span class="lineno"> 441</span>  * If the stream state is still good, then the sentry state becomes</div><div class="line"><a name="l00442"></a><span class="lineno"> 442</span>  * true (@a okay).</div><div class="line"><a name="l00443"></a><span class="lineno"> 443</span>  */</div><div class="line"><a name="l00444"></a><span class="lineno"> 444</span>  explicit</div><div class="line"><a name="l00445"></a><span class="lineno"> 445</span>  sentry(basic_ostream<_CharT, _Traits>& __os);</div><div class="line"><a name="l00446"></a><span class="lineno"> 446</span> </div><div class="line"><a name="l00447"></a><span class="lineno"> 447</span> #pragma GCC diagnostic push</div><div class="line"><a name="l00448"></a><span class="lineno"> 448</span> #pragma GCC diagnostic ignored "-Wdeprecated-declarations"</div><div class="line"><a name="l00449"></a><span class="lineno"> 449</span>  /**</div><div class="line"><a name="l00450"></a><span class="lineno"> 450</span>  * @brief Possibly flushes the stream.</div><div class="line"><a name="l00451"></a><span class="lineno"> 451</span>  *</div><div class="line"><a name="l00452"></a><span class="lineno"> 452</span>  * If @c ios_base::unitbuf is set in @c os.flags(), and</div><div class="line"><a name="l00453"></a><span class="lineno"> 453</span>  * @c std::uncaught_exception() is true, the sentry destructor calls</div><div class="line"><a name="l00454"></a><span class="lineno"> 454</span>  * @c flush() on the output stream.</div><div class="line"><a name="l00455"></a><span class="lineno"> 455</span>  */</div><div class="line"><a name="l00456"></a><span class="lineno"> 456</span>  ~sentry()</div><div class="line"><a name="l00457"></a><span class="lineno"> 457</span>  {</div><div class="line"><a name="l00458"></a><span class="lineno"> 458</span>  // XXX MT</div><div class="line"><a name="l00459"></a><span class="lineno"> 459</span>  if (bool(_M_os.flags() & ios_base::unitbuf) && !uncaught_exception())</div><div class="line"><a name="l00460"></a><span class="lineno"> 460</span>  {</div><div class="line"><a name="l00461"></a><span class="lineno"> 461</span>  // Can't call flush directly or else will get into recursive lock.</div><div class="line"><a name="l00462"></a><span class="lineno"> 462</span>  if (_M_os.rdbuf() && _M_os.rdbuf()->pubsync() == -1)</div><div class="line"><a name="l00463"></a><span class="lineno"> 463</span>  _M_os.setstate(ios_base::badbit);</div><div class="line"><a name="l00464"></a><span class="lineno"> 464</span>  }</div><div class="line"><a name="l00465"></a><span class="lineno"> 465</span>  }</div><div class="line"><a name="l00466"></a><span class="lineno"> 466</span> #pragma GCC diagnostic pop</div><div class="line"><a name="l00467"></a><span class="lineno"> 467</span> </div><div class="line"><a name="l00468"></a><span class="lineno"> 468</span>  /**</div><div class="line"><a name="l00469"></a><span class="lineno"> 469</span>  * @brief Quick status checking.</div><div class="line"><a name="l00470"></a><span class="lineno"> 470</span>  * @return The sentry state.</div><div class="line"><a name="l00471"></a><span class="lineno"> 471</span>  *</div><div class="line"><a name="l00472"></a><span class="lineno"> 472</span>  * For ease of use, sentries may be converted to booleans. The</div><div class="line"><a name="l00473"></a><span class="lineno"> 473</span>  * return value is that of the sentry state (true == okay).</div><div class="line"><a name="l00474"></a><span class="lineno"> 474</span>  */</div><div class="line"><a name="l00475"></a><span class="lineno"> 475</span> #if __cplusplus >= 201103L</div><div class="line"><a name="l00476"></a><span class="lineno"> 476</span>  explicit</div><div class="line"><a name="l00477"></a><span class="lineno"> 477</span> #endif</div><div class="line"><a name="l00478"></a><span class="lineno"> 478</span>  operator bool() const</div><div class="line"><a name="l00479"></a><span class="lineno"> 479</span>  { return _M_ok; }</div><div class="line"><a name="l00480"></a><span class="lineno"> 480</span>  };</div><div class="line"><a name="l00481"></a><span class="lineno"> 481</span> </div><div class="line"><a name="l00482"></a><span class="lineno"> 482</span>  //@{</div><div class="line"><a name="l00483"></a><span class="lineno"> 483</span>  /**</div><div class="line"><a name="l00484"></a><span class="lineno"> 484</span>  * @brief Character inserters</div><div class="line"><a name="l00485"></a><span class="lineno"> 485</span>  * @param __out An output stream.</div><div class="line"><a name="l00486"></a><span class="lineno"> 486</span>  * @param __c A character.</div><div class="line"><a name="l00487"></a><span class="lineno"> 487</span>  * @return out</div><div class="line"><a name="l00488"></a><span class="lineno"> 488</span>  *</div><div class="line"><a name="l00489"></a><span class="lineno"> 489</span>  * Behaves like one of the formatted arithmetic inserters described in</div><div class="line"><a name="l00490"></a><span class="lineno"> 490</span>  * std::basic_ostream. After constructing a sentry object with good</div><div class="line"><a name="l00491"></a><span class="lineno"> 491</span>  * status, this function inserts a single character and any required</div><div class="line"><a name="l00492"></a><span class="lineno"> 492</span>  * padding (as determined by [22.2.2.2.2]). @c __out.width(0) is then</div><div class="line"><a name="l00493"></a><span class="lineno"> 493</span>  * called.</div><div class="line"><a name="l00494"></a><span class="lineno"> 494</span>  *</div><div class="line"><a name="l00495"></a><span class="lineno"> 495</span>  * If @p __c is of type @c char and the character type of the stream is not</div><div class="line"><a name="l00496"></a><span class="lineno"> 496</span>  * @c char, the character is widened before insertion.</div><div class="line"><a name="l00497"></a><span class="lineno"> 497</span>  */</div><div class="line"><a name="l00498"></a><span class="lineno"> 498</span>  template<typename _CharT, typename _Traits></div><div class="line"><a name="l00499"></a><span class="lineno"> 499</span>  inline basic_ostream<_CharT, _Traits>&</div><div class="line"><a name="l00500"></a><span class="lineno"> 500</span>  operator<<(basic_ostream<_CharT, _Traits>& __out, _CharT __c)</div><div class="line"><a name="l00501"></a><span class="lineno"> 501</span>  { return __ostream_insert(__out, &__c, 1); }</div><div class="line"><a name="l00502"></a><span class="lineno"> 502</span> </div><div class="line"><a name="l00503"></a><span class="lineno"> 503</span>  template<typename _CharT, typename _Traits></div><div class="line"><a name="l00504"></a><span class="lineno"> 504</span>  inline basic_ostream<_CharT, _Traits>&</div><div class="line"><a name="l00505"></a><span class="lineno"> 505</span>  operator<<(basic_ostream<_CharT, _Traits>& __out, char __c)</div><div class="line"><a name="l00506"></a><span class="lineno"> 506</span>  { return (__out << __out.widen(__c)); }</div><div class="line"><a name="l00507"></a><span class="lineno"> 507</span> </div><div class="line"><a name="l00508"></a><span class="lineno"> 508</span>  // Specialization</div><div class="line"><a name="l00509"></a><span class="lineno"> 509</span>  template <class _Traits></div><div class="line"><a name="l00510"></a><span class="lineno"> 510</span>  inline basic_ostream<char, _Traits>&</div><div class="line"><a name="l00511"></a><span class="lineno"> 511</span>  operator<<(basic_ostream<char, _Traits>& __out, char __c)</div><div class="line"><a name="l00512"></a><span class="lineno"> 512</span>  { return __ostream_insert(__out, &__c, 1); }</div><div class="line"><a name="l00513"></a><span class="lineno"> 513</span> </div><div class="line"><a name="l00514"></a><span class="lineno"> 514</span>  // Signed and unsigned</div><div class="line"><a name="l00515"></a><span class="lineno"> 515</span>  template<class _Traits></div><div class="line"><a name="l00516"></a><span class="lineno"> 516</span>  inline basic_ostream<char, _Traits>&</div><div class="line"><a name="l00517"></a><span class="lineno"> 517</span>  operator<<(basic_ostream<char, _Traits>& __out, signed char __c)</div><div class="line"><a name="l00518"></a><span class="lineno"> 518</span>  { return (__out << static_cast<char>(__c)); }</div><div class="line"><a name="l00519"></a><span class="lineno"> 519</span> </div><div class="line"><a name="l00520"></a><span class="lineno"> 520</span>  template<class _Traits></div><div class="line"><a name="l00521"></a><span class="lineno"> 521</span>  inline basic_ostream<char, _Traits>&</div><div class="line"><a name="l00522"></a><span class="lineno"> 522</span>  operator<<(basic_ostream<char, _Traits>& __out, unsigned char __c)</div><div class="line"><a name="l00523"></a><span class="lineno"> 523</span>  { return (__out << static_cast<char>(__c)); }</div><div class="line"><a name="l00524"></a><span class="lineno"> 524</span>  //@}</div><div class="line"><a name="l00525"></a><span class="lineno"> 525</span> </div><div class="line"><a name="l00526"></a><span class="lineno"> 526</span>  //@{</div><div class="line"><a name="l00527"></a><span class="lineno"> 527</span>  /**</div><div class="line"><a name="l00528"></a><span class="lineno"> 528</span>  * @brief String inserters</div><div class="line"><a name="l00529"></a><span class="lineno"> 529</span>  * @param __out An output stream.</div><div class="line"><a name="l00530"></a><span class="lineno"> 530</span>  * @param __s A character string.</div><div class="line"><a name="l00531"></a><span class="lineno"> 531</span>  * @return out</div><div class="line"><a name="l00532"></a><span class="lineno"> 532</span>  * @pre @p __s must be a non-NULL pointer</div><div class="line"><a name="l00533"></a><span class="lineno"> 533</span>  *</div><div class="line"><a name="l00534"></a><span class="lineno"> 534</span>  * Behaves like one of the formatted arithmetic inserters described in</div><div class="line"><a name="l00535"></a><span class="lineno"> 535</span>  * std::basic_ostream. After constructing a sentry object with good</div><div class="line"><a name="l00536"></a><span class="lineno"> 536</span>  * status, this function inserts @c traits::length(__s) characters starting</div><div class="line"><a name="l00537"></a><span class="lineno"> 537</span>  * at @p __s, widened if necessary, followed by any required padding (as</div><div class="line"><a name="l00538"></a><span class="lineno"> 538</span>  * determined by [22.2.2.2.2]). @c __out.width(0) is then called.</div><div class="line"><a name="l00539"></a><span class="lineno"> 539</span>  */</div><div class="line"><a name="l00540"></a><span class="lineno"> 540</span>  template<typename _CharT, typename _Traits></div><div class="line"><a name="l00541"></a><span class="lineno"> 541</span>  inline basic_ostream<_CharT, _Traits>&</div><div class="line"><a name="l00542"></a><span class="lineno"> 542</span>  operator<<(basic_ostream<_CharT, _Traits>& __out, const _CharT* __s)</div><div class="line"><a name="l00543"></a><span class="lineno"> 543</span>  {</div><div class="line"><a name="l00544"></a><span class="lineno"> 544</span>  if (!__s)</div><div class="line"><a name="l00545"></a><span class="lineno"> 545</span>  __out.setstate(ios_base::badbit);</div><div class="line"><a name="l00546"></a><span class="lineno"> 546</span>  else</div><div class="line"><a name="l00547"></a><span class="lineno"> 547</span>  __ostream_insert(__out, __s,</div><div class="line"><a name="l00548"></a><span class="lineno"> 548</span>  static_cast<streamsize>(_Traits::length(__s)));</div><div class="line"><a name="l00549"></a><span class="lineno"> 549</span>  return __out;</div><div class="line"><a name="l00550"></a><span class="lineno"> 550</span>  }</div><div class="line"><a name="l00551"></a><span class="lineno"> 551</span> </div><div class="line"><a name="l00552"></a><span class="lineno"> 552</span>  template<typename _CharT, typename _Traits></div><div class="line"><a name="l00553"></a><span class="lineno"> 553</span>  basic_ostream<_CharT, _Traits> &</div><div class="line"><a name="l00554"></a><span class="lineno"> 554</span>  operator<<(basic_ostream<_CharT, _Traits>& __out, const char* __s);</div><div class="line"><a name="l00555"></a><span class="lineno"> 555</span> </div><div class="line"><a name="l00556"></a><span class="lineno"> 556</span>  // Partial specializations</div><div class="line"><a name="l00557"></a><span class="lineno"> 557</span>  template<class _Traits></div><div class="line"><a name="l00558"></a><span class="lineno"> 558</span>  inline basic_ostream<char, _Traits>&</div><div class="line"><a name="l00559"></a><span class="lineno"> 559</span>  operator<<(basic_ostream<char, _Traits>& __out, const char* __s)</div><div class="line"><a name="l00560"></a><span class="lineno"> 560</span>  {</div><div class="line"><a name="l00561"></a><span class="lineno"> 561</span>  if (!__s)</div><div class="line"><a name="l00562"></a><span class="lineno"> 562</span>  __out.setstate(ios_base::badbit);</div><div class="line"><a name="l00563"></a><span class="lineno"> 563</span>  else</div><div class="line"><a name="l00564"></a><span class="lineno"> 564</span>  __ostream_insert(__out, __s,</div><div class="line"><a name="l00565"></a><span class="lineno"> 565</span>  static_cast<streamsize>(_Traits::length(__s)));</div><div class="line"><a name="l00566"></a><span class="lineno"> 566</span>  return __out;</div><div class="line"><a name="l00567"></a><span class="lineno"> 567</span>  }</div><div class="line"><a name="l00568"></a><span class="lineno"> 568</span> </div><div class="line"><a name="l00569"></a><span class="lineno"> 569</span>  // Signed and unsigned</div><div class="line"><a name="l00570"></a><span class="lineno"> 570</span>  template<class _Traits></div><div class="line"><a name="l00571"></a><span class="lineno"> 571</span>  inline basic_ostream<char, _Traits>&</div><div class="line"><a name="l00572"></a><span class="lineno"> 572</span>  operator<<(basic_ostream<char, _Traits>& __out, const signed char* __s)</div><div class="line"><a name="l00573"></a><span class="lineno"> 573</span>  { return (__out << reinterpret_cast<const char*>(__s)); }</div><div class="line"><a name="l00574"></a><span class="lineno"> 574</span> </div><div class="line"><a name="l00575"></a><span class="lineno"> 575</span>  template<class _Traits></div><div class="line"><a name="l00576"></a><span class="lineno"> 576</span>  inline basic_ostream<char, _Traits> &</div><div class="line"><a name="l00577"></a><span class="lineno"> 577</span>  operator<<(basic_ostream<char, _Traits>& __out, const unsigned char* __s)</div><div class="line"><a name="l00578"></a><span class="lineno"> 578</span>  { return (__out << reinterpret_cast<const char*>(__s)); }</div><div class="line"><a name="l00579"></a><span class="lineno"> 579</span>  //@}</div><div class="line"><a name="l00580"></a><span class="lineno"> 580</span> </div><div class="line"><a name="l00581"></a><span class="lineno"> 581</span>  // Standard basic_ostream manipulators</div><div class="line"><a name="l00582"></a><span class="lineno"> 582</span> </div><div class="line"><a name="l00583"></a><span class="lineno"> 583</span>  /**</div><div class="line"><a name="l00584"></a><span class="lineno"> 584</span>  * @brief Write a newline and flush the stream.</div><div class="line"><a name="l00585"></a><span class="lineno"> 585</span>  *</div><div class="line"><a name="l00586"></a><span class="lineno"> 586</span>  * This manipulator is often mistakenly used when a simple newline is</div><div class="line"><a name="l00587"></a><span class="lineno"> 587</span>  * desired, leading to poor buffering performance. See</div><div class="line"><a name="l00588"></a><span class="lineno"> 588</span>  * https://gcc.gnu.org/onlinedocs/libstdc++/manual/streambufs.html#io.streambuf.buffering</div><div class="line"><a name="l00589"></a><span class="lineno"> 589</span>  * for more on this subject.</div><div class="line"><a name="l00590"></a><span class="lineno"> 590</span>  */</div><div class="line"><a name="l00591"></a><span class="lineno"> 591</span>  template<typename _CharT, typename _Traits></div><div class="line"><a name="l00592"></a><span class="lineno"> 592</span>  inline basic_ostream<_CharT, _Traits>&</div><div class="line"><a name="l00593"></a><span class="lineno"> 593</span>  endl(basic_ostream<_CharT, _Traits>& __os)</div><div class="line"><a name="l00594"></a><span class="lineno"> 594</span>  { return flush(__os.put(__os.widen('\n'))); }</div><div class="line"><a name="l00595"></a><span class="lineno"> 595</span> </div><div class="line"><a name="l00596"></a><span class="lineno"> 596</span>  /**</div><div class="line"><a name="l00597"></a><span class="lineno"> 597</span>  * @brief Write a null character into the output sequence.</div><div class="line"><a name="l00598"></a><span class="lineno"> 598</span>  *</div><div class="line"><a name="l00599"></a><span class="lineno"> 599</span>  * <em>Null character</em> is @c CharT() by definition. For CharT</div><div class="line"><a name="l00600"></a><span class="lineno"> 600</span>  * of @c char, this correctly writes the ASCII @c NUL character</div><div class="line"><a name="l00601"></a><span class="lineno"> 601</span>  * string terminator.</div><div class="line"><a name="l00602"></a><span class="lineno"> 602</span>  */</div><div class="line"><a name="l00603"></a><span class="lineno"> 603</span>  template<typename _CharT, typename _Traits></div><div class="line"><a name="l00604"></a><span class="lineno"> 604</span>  inline basic_ostream<_CharT, _Traits>&</div><div class="line"><a name="l00605"></a><span class="lineno"> 605</span>  ends(basic_ostream<_CharT, _Traits>& __os)</div><div class="line"><a name="l00606"></a><span class="lineno"> 606</span>  { return __os.put(_CharT()); }</div><div class="line"><a name="l00607"></a><span class="lineno"> 607</span> </div><div class="line"><a name="l00608"></a><span class="lineno"> 608</span>  /**</div><div class="line"><a name="l00609"></a><span class="lineno"> 609</span>  * @brief Flushes the output stream.</div><div class="line"><a name="l00610"></a><span class="lineno"> 610</span>  *</div><div class="line"><a name="l00611"></a><span class="lineno"> 611</span>  * This manipulator simply calls the stream's @c flush() member function.</div><div class="line"><a name="l00612"></a><span class="lineno"> 612</span>  */</div><div class="line"><a name="l00613"></a><span class="lineno"> 613</span>  template<typename _CharT, typename _Traits></div><div class="line"><a name="l00614"></a><span class="lineno"> 614</span>  inline basic_ostream<_CharT, _Traits>&</div><div class="line"><a name="l00615"></a><span class="lineno"> 615</span>  flush(basic_ostream<_CharT, _Traits>& __os)</div><div class="line"><a name="l00616"></a><span class="lineno"> 616</span>  { return __os.flush(); }</div><div class="line"><a name="l00617"></a><span class="lineno"> 617</span> </div><div class="line"><a name="l00618"></a><span class="lineno"> 618</span> #if __cplusplus >= 201103L</div><div class="line"><a name="l00619"></a><span class="lineno"> 619</span>  template<typename _Ch, typename _Up></div><div class="line"><a name="l00620"></a><span class="lineno"> 620</span>  basic_ostream<_Ch, _Up>&</div><div class="line"><a name="l00621"></a><span class="lineno"> 621</span>  __is_convertible_to_basic_ostream_test(basic_ostream<_Ch, _Up>*);</div><div class="line"><a name="l00622"></a><span class="lineno"> 622</span> </div><div class="line"><a name="l00623"></a><span class="lineno"> 623</span>  template<typename _Tp, typename = void></div><div class="line"><a name="l00624"></a><span class="lineno"> 624</span>  struct __is_convertible_to_basic_ostream_impl</div><div class="line"><a name="l00625"></a><span class="lineno"> 625</span>  {</div><div class="line"><a name="l00626"></a><span class="lineno"> 626</span>  using __ostream_type = void;</div><div class="line"><a name="l00627"></a><span class="lineno"> 627</span>  };</div><div class="line"><a name="l00628"></a><span class="lineno"> 628</span> </div><div class="line"><a name="l00629"></a><span class="lineno"> 629</span>  template<typename _Tp></div><div class="line"><a name="l00630"></a><span class="lineno"> 630</span>  using __do_is_convertible_to_basic_ostream_impl =</div><div class="line"><a name="l00631"></a><span class="lineno"> 631</span>  decltype(__is_convertible_to_basic_ostream_test</div><div class="line"><a name="l00632"></a><span class="lineno"> 632</span>  (declval<typename remove_reference<_Tp>::type*>()));</div><div class="line"><a name="l00633"></a><span class="lineno"> 633</span> </div><div class="line"><a name="l00634"></a><span class="lineno"> 634</span>  template<typename _Tp></div><div class="line"><a name="l00635"></a><span class="lineno"> 635</span>  struct __is_convertible_to_basic_ostream_impl</div><div class="line"><a name="l00636"></a><span class="lineno"> 636</span>  <_Tp,</div><div class="line"><a name="l00637"></a><span class="lineno"> 637</span>  __void_t<__do_is_convertible_to_basic_ostream_impl<_Tp>>></div><div class="line"><a name="l00638"></a><span class="lineno"> 638</span>  {</div><div class="line"><a name="l00639"></a><span class="lineno"> 639</span>  using __ostream_type =</div><div class="line"><a name="l00640"></a><span class="lineno"> 640</span>  __do_is_convertible_to_basic_ostream_impl<_Tp>;</div><div class="line"><a name="l00641"></a><span class="lineno"> 641</span>  };</div><div class="line"><a name="l00642"></a><span class="lineno"> 642</span> </div><div class="line"><a name="l00643"></a><span class="lineno"> 643</span>  template<typename _Tp></div><div class="line"><a name="l00644"></a><span class="lineno"> 644</span>  struct __is_convertible_to_basic_ostream</div><div class="line"><a name="l00645"></a><span class="lineno"> 645</span>  : __is_convertible_to_basic_ostream_impl<_Tp></div><div class="line"><a name="l00646"></a><span class="lineno"> 646</span>  {</div><div class="line"><a name="l00647"></a><span class="lineno"> 647</span>  public:</div><div class="line"><a name="l00648"></a><span class="lineno"> 648</span>  using type = __not_<is_void<</div><div class="line"><a name="l00649"></a><span class="lineno"> 649</span>  typename __is_convertible_to_basic_ostream_impl<_Tp>::__ostream_type>>;</div><div class="line"><a name="l00650"></a><span class="lineno"> 650</span>  constexpr static bool value = type::value;</div><div class="line"><a name="l00651"></a><span class="lineno"> 651</span>  };</div><div class="line"><a name="l00652"></a><span class="lineno"> 652</span> </div><div class="line"><a name="l00653"></a><span class="lineno"> 653</span>  template<typename _Ostream, typename _Tp, typename = void></div><div class="line"><a name="l00654"></a><span class="lineno"> 654</span>  struct __is_insertable : false_type {};</div><div class="line"><a name="l00655"></a><span class="lineno"> 655</span> </div><div class="line"><a name="l00656"></a><span class="lineno"> 656</span>  template<typename _Ostream, typename _Tp></div><div class="line"><a name="l00657"></a><span class="lineno"> 657</span>  struct __is_insertable<_Ostream, _Tp,</div><div class="line"><a name="l00658"></a><span class="lineno"> 658</span>  __void_t<decltype(declval<_Ostream&>()</div><div class="line"><a name="l00659"></a><span class="lineno"> 659</span>  << declval<const _Tp&>())>></div><div class="line"><a name="l00660"></a><span class="lineno"> 660</span>  : true_type {};</div><div class="line"><a name="l00661"></a><span class="lineno"> 661</span> </div><div class="line"><a name="l00662"></a><span class="lineno"> 662</span>  template<typename _Ostream></div><div class="line"><a name="l00663"></a><span class="lineno"> 663</span>  using __rvalue_ostream_type =</div><div class="line"><a name="l00664"></a><span class="lineno"> 664</span>  typename __is_convertible_to_basic_ostream<</div><div class="line"><a name="l00665"></a><span class="lineno"> 665</span>  _Ostream>::__ostream_type;</div><div class="line"><a name="l00666"></a><span class="lineno"> 666</span> </div><div class="line"><a name="l00667"></a><span class="lineno"> 667</span>  /**</div><div class="line"><a name="l00668"></a><span class="lineno"> 668</span>  * @brief Generic inserter for rvalue stream</div><div class="line"><a name="l00669"></a><span class="lineno"> 669</span>  * @param __os An input stream.</div><div class="line"><a name="l00670"></a><span class="lineno"> 670</span>  * @param __x A reference to the object being inserted.</div><div class="line"><a name="l00671"></a><span class="lineno"> 671</span>  * @return os</div><div class="line"><a name="l00672"></a><span class="lineno"> 672</span>  *</div><div class="line"><a name="l00673"></a><span class="lineno"> 673</span>  * This is just a forwarding function to allow insertion to</div><div class="line"><a name="l00674"></a><span class="lineno"> 674</span>  * rvalue streams since they won't bind to the inserter functions</div><div class="line"><a name="l00675"></a><span class="lineno"> 675</span>  * that take an lvalue reference.</div><div class="line"><a name="l00676"></a><span class="lineno"> 676</span>  */</div><div class="line"><a name="l00677"></a><span class="lineno"> 677</span>  template<typename _Ostream, typename _Tp></div><div class="line"><a name="l00678"></a><span class="lineno"> 678</span>  inline</div><div class="line"><a name="l00679"></a><span class="lineno"> 679</span>  typename enable_if<__and_<__not_<is_lvalue_reference<_Ostream>>,</div><div class="line"><a name="l00680"></a><span class="lineno"> 680</span>  __is_convertible_to_basic_ostream<_Ostream>,</div><div class="line"><a name="l00681"></a><span class="lineno"> 681</span>  __is_insertable<</div><div class="line"><a name="l00682"></a><span class="lineno"> 682</span>  __rvalue_ostream_type<_Ostream>,</div><div class="line"><a name="l00683"></a><span class="lineno"> 683</span>  const _Tp&>>::value,</div><div class="line"><a name="l00684"></a><span class="lineno"> 684</span>  __rvalue_ostream_type<_Ostream>>::type</div><div class="line"><a name="l00685"></a><span class="lineno"> 685</span>  operator<<(_Ostream&& __os, const _Tp& __x)</div><div class="line"><a name="l00686"></a><span class="lineno"> 686</span>  {</div><div class="line"><a name="l00687"></a><span class="lineno"> 687</span>  __rvalue_ostream_type<_Ostream> __ret_os = __os;</div><div class="line"><a name="l00688"></a><span class="lineno"> 688</span>  __ret_os << __x;</div><div class="line"><a name="l00689"></a><span class="lineno"> 689</span>  return __ret_os;</div><div class="line"><a name="l00690"></a><span class="lineno"> 690</span>  }</div><div class="line"><a name="l00691"></a><span class="lineno"> 691</span> #endif // C++11</div><div class="line"><a name="l00692"></a><span class="lineno"> 692</span> </div><div class="line"><a name="l00693"></a><span class="lineno"> 693</span> _GLIBCXX_END_NAMESPACE_VERSION</div><div class="line"><a name="l00694"></a><span class="lineno"> 694</span> } // namespace std</div><div class="line"><a name="l00695"></a><span class="lineno"> 695</span> </div><div class="line"><a name="l00696"></a><span class="lineno"> 696</span> #include <bits/ostream.tcc></div><div class="line"><a name="l00697"></a><span class="lineno"> 697</span> </div><div class="line"><a name="l00698"></a><span class="lineno"> 698</span> #endif /* _GLIBCXX_OSTREAM */</div></div><!-- fragment --></div><!-- contents -->
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