<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/> <meta http-equiv="X-UA-Compatible" content="IE=9"/> <meta name="generator" content="Doxygen 1.8.13"/> <meta name="viewport" content="width=device-width, initial-scale=1"/> <title>libstdc++: ptr_traits.h Source File</title> <link href="tabs.css" rel="stylesheet" type="text/css"/> <script type="text/javascript" src="jquery.js"></script> <script type="text/javascript" src="dynsections.js"></script> <link href="navtree.css" rel="stylesheet" type="text/css"/> <script type="text/javascript" src="resize.js"></script> <script type="text/javascript" src="navtreedata.js"></script> <script type="text/javascript" src="navtree.js"></script> <script type="text/javascript"> $(document).ready(initResizable); </script> <link href="doxygen.css" rel="stylesheet" type="text/css" /> </head> <body> <div id="top"><!-- do not remove this div, it is closed by doxygen! --> <div id="titlearea"> <table cellspacing="0" cellpadding="0"> <tbody> <tr style="height: 56px;"> <td id="projectalign" style="padding-left: 0.5em;"> <div id="projectname">libstdc++ </div> </td> </tr> </tbody> </table> </div> <!-- end header part --> <!-- Generated by Doxygen 1.8.13 --> </div><!-- top --> <div id="side-nav" class="ui-resizable side-nav-resizable"> <div id="nav-tree"> <div id="nav-tree-contents"> <div id="nav-sync" class="sync"></div> </div> </div> <div id="splitbar" style="-moz-user-select:none;" class="ui-resizable-handle"> </div> </div> <script type="text/javascript"> $(document).ready(function(){initNavTree('a00416_source.html','');}); </script> <div id="doc-content"> <div class="header"> <div class="headertitle"> <div class="title">ptr_traits.h</div> </div> </div><!--header--> <div class="contents"> <a href="a00416.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="comment">// Pointer Traits -*- C++ -*-</span></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> <span class="comment">// Copyright (C) 2011-2015 Free Software Foundation, Inc.</span></div><div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment">//</span></div><div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment">// This file is part of the GNU ISO C++ Library. This library is free</span></div><div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment">// software; you can redistribute it and/or modify it under the</span></div><div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment">// terms of the GNU General Public License as published by the</span></div><div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment">// Free Software Foundation; either version 3, or (at your option)</span></div><div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment">// any later version.</span></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> <span class="comment">// This library is distributed in the hope that it will be useful,</span></div><div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment">// but WITHOUT ANY WARRANTY; without even the implied warranty of</span></div><div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="comment">// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the</span></div><div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="comment">// GNU General Public License for more details.</span></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> <span class="comment">// Under Section 7 of GPL version 3, you are granted additional</span></div><div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="comment">// permissions described in the GCC Runtime Library Exception, version</span></div><div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="comment">// 3.1, as published by the Free Software Foundation.</span></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> <span class="comment">// You should have received a copy of the GNU General Public License and</span></div><div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="comment">// a copy of the GCC Runtime Library Exception along with this program;</span></div><div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="comment">// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see</span></div><div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="comment">// <http://www.gnu.org/licenses/>.</span></div><div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="comment"></span></div><div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="comment">/** @file bits/ptr_traits.h</span></div><div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="comment"> * This is an internal header file, included by other library headers.</span></div><div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="comment"> * Do not attempt to use it directly. @headername{memory}</span></div><div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="comment"> */</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> <span class="preprocessor">#ifndef _PTR_TRAITS_H</span></div><div class="line"><a name="l00031"></a><span class="lineno"> 31</span> <span class="preprocessor">#define _PTR_TRAITS_H 1</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> <span class="preprocessor">#if __cplusplus >= 201103L</span></div><div class="line"><a name="l00034"></a><span class="lineno"> 34</span> </div><div class="line"><a name="l00035"></a><span class="lineno"> 35</span> <span class="preprocessor">#include <<a class="code" href="a00161.html">type_traits</a>></span> <span class="comment">// For _GLIBCXX_HAS_NESTED_TYPE</span></div><div class="line"><a name="l00036"></a><span class="lineno"> 36</span> </div><div class="line"><a name="l00037"></a><span class="lineno"> 37</span> <span class="keyword">namespace </span><a class="code" href="a01487.html">std</a> _GLIBCXX_VISIBILITY(default)</div><div class="line"><a name="l00038"></a><span class="lineno"> 38</span> {</div><div class="line"><a name="l00039"></a><span class="lineno"> 39</span> _GLIBCXX_BEGIN_NAMESPACE_VERSION</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> _GLIBCXX_HAS_NESTED_TYPE(element_type)</div><div class="line"><a name="l00042"></a><span class="lineno"> 42</span> _GLIBCXX_HAS_NESTED_TYPE(difference_type)</div><div class="line"><a name="l00043"></a><span class="lineno"> 43</span> </div><div class="line"><a name="l00044"></a><span class="lineno"> 44</span>  template<typename _Tp, bool = __has_element_type<_Tp>::value></div><div class="line"><a name="l00045"></a><span class="lineno"> 45</span>  <span class="keyword">struct </span>__ptrtr_elt_type;</div><div class="line"><a name="l00046"></a><span class="lineno"> 46</span> </div><div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  <span class="keyword">template</span><<span class="keyword">typename</span> _Tp></div><div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  <span class="keyword">struct </span>__ptrtr_elt_type<_Tp, true></div><div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  {</div><div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  <span class="keyword">typedef</span> <span class="keyword">typename</span> _Tp::element_type __type;</div><div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  };</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>  <span class="keyword">template</span><<span class="keyword">template</span><<span class="keyword">typename</span>, <span class="keyword">typename</span>...> <span class="keyword">class </span>_SomePtr, <span class="keyword">typename</span> _Tp,</div><div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  <span class="keyword">typename</span>... _Args></div><div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  <span class="keyword">struct </span>__ptrtr_elt_type<_SomePtr<_Tp, _Args...>, false></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>  <span class="keyword">typedef</span> _Tp __type;</div><div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  };</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>  template<typename _Tp, bool = __has_difference_type<_Tp>::value></div><div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  <span class="keyword">struct </span>__ptrtr_diff_type</div><div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  {</div><div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  <span class="keyword">typedef</span> <span class="keyword">typename</span> _Tp::difference_type __type;</div><div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  };</div><div class="line"><a name="l00065"></a><span class="lineno"> 65</span> </div><div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  <span class="keyword">template</span><<span class="keyword">typename</span> _Tp></div><div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  <span class="keyword">struct </span>__ptrtr_diff_type<_Tp, false></div><div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  {</div><div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  <span class="keyword">typedef</span> ptrdiff_t __type;</div><div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  };</div><div class="line"><a name="l00071"></a><span class="lineno"> 71</span> </div><div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  <span class="keyword">template</span><<span class="keyword">typename</span> _Ptr, <span class="keyword">typename</span> _Up></div><div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  <span class="keyword">class </span>__ptrtr_rebind_helper</div><div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  {</div><div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  <span class="keyword">template</span><<span class="keyword">typename</span> _Ptr2, <span class="keyword">typename</span> _Up2></div><div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  <span class="keyword">static</span> constexpr <a class="code" href="a01430.html#ga6a860513044e23d34e553ea986e83fa1">true_type</a></div><div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  _S_chk(<span class="keyword">typename</span> _Ptr2::template rebind<_Up2>*);</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>  <span class="keyword">template</span><<span class="keyword">typename</span>, <span class="keyword">typename</span>></div><div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  <span class="keyword">static</span> constexpr <a class="code" href="a01430.html#gaebe6729ab5488ecc76c762873d226857">false_type</a></div><div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  _S_chk(...);</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>  <span class="keyword">public</span>:</div><div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  <span class="keyword">using</span> __type = decltype(_S_chk<_Ptr, _Up>(<span class="keyword">nullptr</span>));</div><div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  };</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>  <span class="keyword">template</span><<span class="keyword">typename</span> _Tp, <span class="keyword">typename</span> _Up,</div><div class="line"><a name="l00088"></a><span class="lineno"> 88</span>  <span class="keywordtype">bool</span> = __ptrtr_rebind_helper<_Tp, _Up>::__type::value></div><div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  <span class="keyword">struct </span>__ptrtr_rebind;</div><div class="line"><a name="l00090"></a><span class="lineno"> 90</span> </div><div class="line"><a name="l00091"></a><span class="lineno"> 91</span>  <span class="keyword">template</span><<span class="keyword">typename</span> _Tp, <span class="keyword">typename</span> _Up></div><div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  <span class="keyword">struct </span>__ptrtr_rebind<_Tp, _Up, true></div><div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  {</div><div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  <span class="keyword">typedef</span> <span class="keyword">typename</span> _Tp::template rebind<_Up> __type;</div><div class="line"><a name="l00095"></a><span class="lineno"> 95</span>  };</div><div class="line"><a name="l00096"></a><span class="lineno"> 96</span> </div><div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  <span class="keyword">template</span><<span class="keyword">template</span><<span class="keyword">typename</span>, <span class="keyword">typename</span>...> <span class="keyword">class </span>_SomePtr, <span class="keyword">typename</span> _Up,</div><div class="line"><a name="l00098"></a><span class="lineno"> 98</span>  <span class="keyword">typename</span> _Tp, <span class="keyword">typename</span>... _Args></div><div class="line"><a name="l00099"></a><span class="lineno"> 99</span>  <span class="keyword">struct </span>__ptrtr_rebind<_SomePtr<_Tp, _Args...>, _Up, false></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>  <span class="keyword">typedef</span> _SomePtr<_Up, _Args...> __type;</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> </div><div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  template<typename _Tp, typename = typename remove_cv<_Tp>::type></div><div class="line"><a name="l00105"></a><span class="lineno"> 105</span>  <span class="keyword">struct </span>__ptrtr_not_void</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>  <span class="keyword">typedef</span> _Tp __type;</div><div class="line"><a name="l00108"></a><span class="lineno"> 108</span>  };</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>  <span class="keyword">template</span><<span class="keyword">typename</span> _Tp></div><div class="line"><a name="l00111"></a><span class="lineno"> 111</span>  <span class="keyword">struct </span>__ptrtr_not_void<_Tp, void></div><div class="line"><a name="l00112"></a><span class="lineno"> 112</span>  {</div><div class="line"><a name="l00113"></a><span class="lineno"> 113</span>  <span class="keyword">struct </span>__type { };</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>  <span class="keyword">template</span><<span class="keyword">typename</span> _Ptr></div><div class="line"><a name="l00117"></a><span class="lineno"> 117</span>  <span class="keyword">class </span>__ptrtr_pointer_to</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>  <span class="keyword">typedef</span> <span class="keyword">typename</span> __ptrtr_elt_type<_Ptr>::__type __orig_type;</div><div class="line"><a name="l00120"></a><span class="lineno"> 120</span>  <span class="keyword">typedef</span> <span class="keyword">typename</span> __ptrtr_not_void<__orig_type>::__type __element_type;</div><div class="line"><a name="l00121"></a><span class="lineno"> 121</span> </div><div class="line"><a name="l00122"></a><span class="lineno"> 122</span>  <span class="keyword">public</span>:</div><div class="line"><a name="l00123"></a><span class="lineno"> 123</span>  <span class="keyword">static</span> _Ptr pointer_to(__element_type& __e)</div><div class="line"><a name="l00124"></a><span class="lineno"> 124</span>  { <span class="keywordflow">return</span> _Ptr::pointer_to(__e); }</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> <span class="comment"></span></div><div class="line"><a name="l00127"></a><span class="lineno"> 127</span> <span class="comment"> /**</span></div><div class="line"><a name="l00128"></a><span class="lineno"> 128</span> <span class="comment"> * @brief Uniform interface to all pointer-like types</span></div><div class="line"><a name="l00129"></a><span class="lineno"> 129</span> <span class="comment"> * @ingroup pointer_abstractions</span></div><div class="line"><a name="l00130"></a><span class="lineno"> 130</span> <span class="comment"> */</span></div><div class="line"><a name="l00131"></a><span class="lineno"> 131</span>  <span class="keyword">template</span><<span class="keyword">typename</span> _Ptr></div><div class="line"><a name="l00132"></a><span class="lineno"><a class="line" href="a05741.html"> 132</a></span>  <span class="keyword">struct </span><a class="code" href="a05741.html">pointer_traits</a> : __ptrtr_pointer_to<_Ptr></div><div class="line"><a name="l00133"></a><span class="lineno"> 133</span>  {<span class="comment"></span></div><div class="line"><a name="l00134"></a><span class="lineno"> 134</span> <span class="comment"> /// The pointer type</span></div><div class="line"><a name="l00135"></a><span class="lineno"><a class="line" href="a05741.html#abb2c729873f5e9f90041f5f425967983"> 135</a></span> <span class="comment"></span> <span class="keyword">typedef</span> _Ptr <a class="code" href="a05741.html#abb2c729873f5e9f90041f5f425967983">pointer</a>;<span class="comment"></span></div><div class="line"><a name="l00136"></a><span class="lineno"> 136</span> <span class="comment"> /// The type pointed to</span></div><div class="line"><a name="l00137"></a><span class="lineno"><a class="line" href="a05741.html#afbe577731214ffde229449018dac1124"> 137</a></span> <span class="comment"></span> <span class="keyword">typedef</span> <span class="keyword">typename</span> __ptrtr_elt_type<_Ptr>::__type <a class="code" href="a05741.html#afbe577731214ffde229449018dac1124">element_type</a>;<span class="comment"></span></div><div class="line"><a name="l00138"></a><span class="lineno"> 138</span> <span class="comment"> /// Type used to represent the difference between two pointers</span></div><div class="line"><a name="l00139"></a><span class="lineno"><a class="line" href="a05741.html#a8342c6ffe992cf695fc6b68aa8c7acd2"> 139</a></span> <span class="comment"></span> <span class="keyword">typedef</span> <span class="keyword">typename</span> __ptrtr_diff_type<_Ptr>::__type <a class="code" href="a05741.html#a8342c6ffe992cf695fc6b68aa8c7acd2">difference_type</a>;</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>  <span class="keyword">template</span><<span class="keyword">typename</span> _Up></div><div class="line"><a name="l00142"></a><span class="lineno"> 142</span>  <span class="keyword">using</span> rebind = <span class="keyword">typename</span> __ptrtr_rebind<_Ptr, _Up>::__type;</div><div class="line"><a name="l00143"></a><span class="lineno"> 143</span>  };</div><div class="line"><a name="l00144"></a><span class="lineno"> 144</span> <span class="comment"></span></div><div class="line"><a name="l00145"></a><span class="lineno"> 145</span> <span class="comment"> /**</span></div><div class="line"><a name="l00146"></a><span class="lineno"> 146</span> <span class="comment"> * @brief Partial specialization for built-in pointers.</span></div><div class="line"><a name="l00147"></a><span class="lineno"> 147</span> <span class="comment"> * @ingroup pointer_abstractions</span></div><div class="line"><a name="l00148"></a><span class="lineno"> 148</span> <span class="comment"> */</span></div><div class="line"><a name="l00149"></a><span class="lineno"> 149</span>  <span class="keyword">template</span><<span class="keyword">typename</span> _Tp></div><div class="line"><a name="l00150"></a><span class="lineno"><a class="line" href="a05745.html"> 150</a></span>  <span class="keyword">struct </span><a class="code" href="a05741.html">pointer_traits</a><_Tp*></div><div class="line"><a name="l00151"></a><span class="lineno"> 151</span>  {<span class="comment"></span></div><div class="line"><a name="l00152"></a><span class="lineno"> 152</span> <span class="comment"> /// The pointer type</span></div><div class="line"><a name="l00153"></a><span class="lineno"><a class="line" href="a05745.html#a662e7c9fa1e9ba89bee4545c22aa3e5e"> 153</a></span> <span class="comment"></span> <span class="keyword">typedef</span> _Tp* <a class="code" href="a05745.html#a662e7c9fa1e9ba89bee4545c22aa3e5e">pointer</a>;<span class="comment"></span></div><div class="line"><a name="l00154"></a><span class="lineno"> 154</span> <span class="comment"> /// The type pointed to</span></div><div class="line"><a name="l00155"></a><span class="lineno"><a class="line" href="a05745.html#ac702e82a55f07abb4e8992a4c9c3d5c1"> 155</a></span> <span class="comment"></span> <span class="keyword">typedef</span> _Tp <a class="code" href="a05745.html#ac702e82a55f07abb4e8992a4c9c3d5c1">element_type</a>;<span class="comment"></span></div><div class="line"><a name="l00156"></a><span class="lineno"> 156</span> <span class="comment"> /// Type used to represent the difference between two pointers</span></div><div class="line"><a name="l00157"></a><span class="lineno"><a class="line" href="a05745.html#a795f872c4242cf5a82add01ec8a295ed"> 157</a></span> <span class="comment"></span> <span class="keyword">typedef</span> ptrdiff_t <a class="code" href="a05745.html#a795f872c4242cf5a82add01ec8a295ed">difference_type</a>;</div><div class="line"><a name="l00158"></a><span class="lineno"> 158</span> </div><div class="line"><a name="l00159"></a><span class="lineno"> 159</span>  <span class="keyword">template</span><<span class="keyword">typename</span> _Up></div><div class="line"><a name="l00160"></a><span class="lineno"> 160</span>  <span class="keyword">using</span> rebind = _Up*;</div><div class="line"><a name="l00161"></a><span class="lineno"> 161</span> <span class="comment"></span></div><div class="line"><a name="l00162"></a><span class="lineno"> 162</span> <span class="comment"> /**</span></div><div class="line"><a name="l00163"></a><span class="lineno"> 163</span> <span class="comment"> * @brief Obtain a pointer to an object</span></div><div class="line"><a name="l00164"></a><span class="lineno"> 164</span> <span class="comment"> * @param __r A reference to an object of type @c element_type</span></div><div class="line"><a name="l00165"></a><span class="lineno"> 165</span> <span class="comment"> * @return @c addressof(__r)</span></div><div class="line"><a name="l00166"></a><span class="lineno"> 166</span> <span class="comment"> */</span></div><div class="line"><a name="l00167"></a><span class="lineno"> 167</span>  <span class="keyword">static</span> pointer</div><div class="line"><a name="l00168"></a><span class="lineno"><a class="line" href="a05745.html#a91e554238b086634be2f50cec678e79f"> 168</a></span>  <a class="code" href="a05745.html#a91e554238b086634be2f50cec678e79f">pointer_to</a>(<span class="keyword">typename</span> __ptrtr_not_void<element_type>::__type& __r) noexcept</div><div class="line"><a name="l00169"></a><span class="lineno"> 169</span>  { <span class="keywordflow">return</span> <a class="code" href="a01431.html#gafb3bb408fa78728142a592273108e206">std::addressof</a>(__r); }</div><div class="line"><a name="l00170"></a><span class="lineno"> 170</span>  };</div><div class="line"><a name="l00171"></a><span class="lineno"> 171</span> </div><div class="line"><a name="l00172"></a><span class="lineno"> 172</span> _GLIBCXX_END_NAMESPACE_VERSION</div><div class="line"><a name="l00173"></a><span class="lineno"> 173</span> } <span class="comment">// namespace std</span></div><div class="line"><a name="l00174"></a><span class="lineno"> 174</span> </div><div class="line"><a name="l00175"></a><span class="lineno"> 175</span> <span class="preprocessor">#endif</span></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> <span class="preprocessor">#endif</span></div><div class="ttc" id="a05745_html_a795f872c4242cf5a82add01ec8a295ed"><div class="ttname"><a href="a05745.html#a795f872c4242cf5a82add01ec8a295ed">std::pointer_traits< _Tp * >::difference_type</a></div><div class="ttdeci">ptrdiff_t difference_type</div><div class="ttdoc">Type used to represent the difference between two pointers. </div><div class="ttdef"><b>Definition:</b> <a href="a00416_source.html#l00157">ptr_traits.h:157</a></div></div> <div class="ttc" id="a05741_html"><div class="ttname"><a href="a05741.html">std::pointer_traits</a></div><div class="ttdoc">Uniform interface to all pointer-like types. </div><div class="ttdef"><b>Definition:</b> <a href="a00416_source.html#l00132">ptr_traits.h:132</a></div></div> <div class="ttc" id="a05741_html_abb2c729873f5e9f90041f5f425967983"><div class="ttname"><a href="a05741.html#abb2c729873f5e9f90041f5f425967983">std::pointer_traits::pointer</a></div><div class="ttdeci">_Ptr pointer</div><div class="ttdoc">The pointer type. </div><div class="ttdef"><b>Definition:</b> <a href="a00416_source.html#l00135">ptr_traits.h:135</a></div></div> <div class="ttc" id="a01431_html_gafb3bb408fa78728142a592273108e206"><div class="ttname"><a href="a01431.html#gafb3bb408fa78728142a592273108e206">std::addressof</a></div><div class="ttdeci">_Tp * addressof(_Tp &__r) noexcept</div><div class="ttdoc">Returns the actual address of the object or function referenced by r, even in the presence of an over...</div><div class="ttdef"><b>Definition:</b> <a href="a00395_source.html#l00135">move.h:135</a></div></div> <div class="ttc" id="a00161_html"><div class="ttname"><a href="a00161.html">type_traits</a></div></div> <div class="ttc" id="a05745_html_ac702e82a55f07abb4e8992a4c9c3d5c1"><div class="ttname"><a href="a05745.html#ac702e82a55f07abb4e8992a4c9c3d5c1">std::pointer_traits< _Tp * >::element_type</a></div><div class="ttdeci">_Tp element_type</div><div class="ttdoc">The type pointed to. </div><div class="ttdef"><b>Definition:</b> <a href="a00416_source.html#l00155">ptr_traits.h:155</a></div></div> <div class="ttc" id="a01487_html"><div class="ttname"><a href="a01487.html">std</a></div><div class="ttdoc">ISO C++ entities toplevel namespace is std. </div></div> <div class="ttc" id="a05741_html_afbe577731214ffde229449018dac1124"><div class="ttname"><a href="a05741.html#afbe577731214ffde229449018dac1124">std::pointer_traits::element_type</a></div><div class="ttdeci">__ptrtr_elt_type< _Ptr >::__type element_type</div><div class="ttdoc">The type pointed to. </div><div class="ttdef"><b>Definition:</b> <a href="a00416_source.html#l00137">ptr_traits.h:137</a></div></div> <div class="ttc" id="a01430_html_gaebe6729ab5488ecc76c762873d226857"><div class="ttname"><a href="a01430.html#gaebe6729ab5488ecc76c762873d226857">std::false_type</a></div><div class="ttdeci">integral_constant< bool, false > false_type</div><div class="ttdoc">The type used as a compile-time boolean with false value. </div><div class="ttdef"><b>Definition:</b> <a href="a00161_source.html#l00090">type_traits:90</a></div></div> <div class="ttc" id="a05745_html_a91e554238b086634be2f50cec678e79f"><div class="ttname"><a href="a05745.html#a91e554238b086634be2f50cec678e79f">std::pointer_traits< _Tp * >::pointer_to</a></div><div class="ttdeci">static pointer pointer_to(typename __ptrtr_not_void< element_type >::__type &__r) noexcept</div><div class="ttdoc">Obtain a pointer to an object. </div><div class="ttdef"><b>Definition:</b> <a href="a00416_source.html#l00168">ptr_traits.h:168</a></div></div> <div class="ttc" id="a05741_html_a8342c6ffe992cf695fc6b68aa8c7acd2"><div class="ttname"><a href="a05741.html#a8342c6ffe992cf695fc6b68aa8c7acd2">std::pointer_traits::difference_type</a></div><div class="ttdeci">__ptrtr_diff_type< _Ptr >::__type difference_type</div><div class="ttdoc">Type used to represent the difference between two pointers. </div><div class="ttdef"><b>Definition:</b> <a href="a00416_source.html#l00139">ptr_traits.h:139</a></div></div> <div class="ttc" id="a01430_html_ga6a860513044e23d34e553ea986e83fa1"><div class="ttname"><a href="a01430.html#ga6a860513044e23d34e553ea986e83fa1">std::true_type</a></div><div class="ttdeci">integral_constant< bool, true > true_type</div><div class="ttdoc">The type used as a compile-time boolean with true value. </div><div class="ttdef"><b>Definition:</b> <a href="a00161_source.html#l00087">type_traits:87</a></div></div> <div class="ttc" id="a05745_html_a662e7c9fa1e9ba89bee4545c22aa3e5e"><div class="ttname"><a href="a05745.html#a662e7c9fa1e9ba89bee4545c22aa3e5e">std::pointer_traits< _Tp * >::pointer</a></div><div class="ttdeci">_Tp * pointer</div><div class="ttdoc">The pointer type. </div><div class="ttdef"><b>Definition:</b> <a href="a00416_source.html#l00153">ptr_traits.h:153</a></div></div> </div><!-- fragment --></div><!-- contents --> </div><!-- doc-content --> <!-- start footer part --> <div id="nav-path" class="navpath"><!-- id is needed for treeview function! --> <ul> <li class="navelem"><a class="el" href="dir_3a83f109ff04170a1f8448445d1bdcba.html">include</a></li><li class="navelem"><a class="el" href="dir_599c955538774c0249d4ddd97c0a9ae8.html">bits</a></li><li class="navelem"><a class="el" href="a00416.html">ptr_traits.h</a></li> <li class="footer">Generated by <a 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