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<div class="title">stl_function.h</div> </div>
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<a href="a01551.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">// Functor implementations -*- 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) 2001-2013 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> </div>
<div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="comment">/*</span></div>
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="comment"> * Copyright (c) 1994</span></div>
<div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="comment"> * Hewlett-Packard Company</span></div>
<div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="comment"> * Permission to use, copy, modify, distribute and sell this software</span></div>
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span> <span class="comment"> * and its documentation for any purpose is hereby granted without fee,</span></div>
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span> <span class="comment"> * provided that the above copyright notice appear in all copies and</span></div>
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span> <span class="comment"> * that both that copyright notice and this permission notice appear</span></div>
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span> <span class="comment"> * in supporting documentation. Hewlett-Packard Company makes no</span></div>
<div class="line"><a name="l00035"></a><span class="lineno"> 35</span> <span class="comment"> * representations about the suitability of this software for any</span></div>
<div class="line"><a name="l00036"></a><span class="lineno"> 36</span> <span class="comment"> * purpose. It is provided "as is" without express or implied warranty.</span></div>
<div class="line"><a name="l00037"></a><span class="lineno"> 37</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span> <span class="comment"> * Copyright (c) 1996-1998</span></div>
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span> <span class="comment"> * Silicon Graphics Computer Systems, Inc.</span></div>
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span> <span class="comment"> * Permission to use, copy, modify, distribute and sell this software</span></div>
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span> <span class="comment"> * and its documentation for any purpose is hereby granted without fee,</span></div>
<div class="line"><a name="l00044"></a><span class="lineno"> 44</span> <span class="comment"> * provided that the above copyright notice appear in all copies and</span></div>
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span> <span class="comment"> * that both that copyright notice and this permission notice appear</span></div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span> <span class="comment"> * in supporting documentation. Silicon Graphics makes no</span></div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span> <span class="comment"> * representations about the suitability of this software for any</span></div>
<div class="line"><a name="l00048"></a><span class="lineno"> 48</span> <span class="comment"> * purpose. It is provided "as is" without express or implied warranty.</span></div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span> <span class="comment"></span></div>
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span> <span class="comment">/** @file bits/stl_function.h</span></div>
<div class="line"><a name="l00052"></a><span class="lineno"> 52</span> <span class="comment"> * This is an internal header file, included by other library headers.</span></div>
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span> <span class="comment"> * Do not attempt to use it directly. @headername{functional}</span></div>
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span> </div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span> <span class="preprocessor">#ifndef _STL_FUNCTION_H</span></div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span> <span class="preprocessor"></span><span class="preprocessor">#define _STL_FUNCTION_H 1</span></div>
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span> <span class="keyword">namespace </span>std _GLIBCXX_VISIBILITY(default)</div>
<div class="line"><a name="l00060"></a><span class="lineno"> 60</span> {</div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span> _GLIBCXX_BEGIN_NAMESPACE_VERSION</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="comment">// 20.3.1 base classes</span><span class="comment"></span></div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span> <span class="comment"> /** @defgroup functors Function Objects</span></div>
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span> <span class="comment"> * @ingroup utilities</span></div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span> <span class="comment"> * Function objects, or @e functors, are objects with an @c operator()</span></div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span> <span class="comment"> * defined and accessible. They can be passed as arguments to algorithm</span></div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span> <span class="comment"> * templates and used in place of a function pointer. Not only is the</span></div>
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span> <span class="comment"> * resulting expressiveness of the library increased, but the generated</span></div>
<div class="line"><a name="l00071"></a><span class="lineno"> 71</span> <span class="comment"> * code can be more efficient than what you might write by hand. When we</span></div>
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span> <span class="comment"> * refer to @a functors, then, generally we include function pointers in</span></div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span> <span class="comment"> * the description as well.</span></div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span> <span class="comment"> * Often, functors are only created as temporaries passed to algorithm</span></div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span> <span class="comment"> * calls, rather than being created as named variables.</span></div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span> <span class="comment"> * Two examples taken from the standard itself follow. To perform a</span></div>
<div class="line"><a name="l00079"></a><span class="lineno"> 79</span> <span class="comment"> * by-element addition of two vectors @c a and @c b containing @c double,</span></div>
<div class="line"><a name="l00080"></a><span class="lineno"> 80</span> <span class="comment"> * and put the result in @c a, use</span></div>
<div class="line"><a name="l00081"></a><span class="lineno"> 81</span> <span class="comment"> * \code</span></div>
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span> <span class="comment"> * transform (a.begin(), a.end(), b.begin(), a.begin(), plus<double>());</span></div>
<div class="line"><a name="l00083"></a><span class="lineno"> 83</span> <span class="comment"> * \endcode</span></div>
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span> <span class="comment"> * To negate every element in @c a, use</span></div>
<div class="line"><a name="l00085"></a><span class="lineno"> 85</span> <span class="comment"> * \code</span></div>
<div class="line"><a name="l00086"></a><span class="lineno"> 86</span> <span class="comment"> * transform(a.begin(), a.end(), a.begin(), negate<double>());</span></div>
<div class="line"><a name="l00087"></a><span class="lineno"> 87</span> <span class="comment"> * \endcode</span></div>
<div class="line"><a name="l00088"></a><span class="lineno"> 88</span> <span class="comment"> * The addition and negation functions will be inlined directly.</span></div>
<div class="line"><a name="l00089"></a><span class="lineno"> 89</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00090"></a><span class="lineno"> 90</span> <span class="comment"> * The standard functors are derived from structs named @c unary_function</span></div>
<div class="line"><a name="l00091"></a><span class="lineno"> 91</span> <span class="comment"> * and @c binary_function. These two classes contain nothing but typedefs,</span></div>
<div class="line"><a name="l00092"></a><span class="lineno"> 92</span> <span class="comment"> * to aid in generic (template) programming. If you write your own</span></div>
<div class="line"><a name="l00093"></a><span class="lineno"> 93</span> <span class="comment"> * functors, you might consider doing the same.</span></div>
<div class="line"><a name="l00094"></a><span class="lineno"> 94</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00095"></a><span class="lineno"> 95</span> <span class="comment"> * @{</span></div>
<div class="line"><a name="l00096"></a><span class="lineno"> 96</span> <span class="comment"> */</span><span class="comment"></span></div>
<div class="line"><a name="l00097"></a><span class="lineno"> 97</span> <span class="comment"> /**</span></div>
<div class="line"><a name="l00098"></a><span class="lineno"> 98</span> <span class="comment"> * This is one of the @link functors functor base classes@endlink.</span></div>
<div class="line"><a name="l00099"></a><span class="lineno"> 99</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00100"></a><span class="lineno"> 100</span>  <span class="keyword">template</span><<span class="keyword">typename</span> _Arg, <span class="keyword">typename</span> _Result></div>
<div class="line"><a name="l00101"></a><span class="lineno"><a class="line" href="a01003.html"> 101</a></span>  <span class="keyword">struct </span><a class="code" href="a01003.html">unary_function</a></div>
<div class="line"><a name="l00102"></a><span class="lineno"> 102</span>  {<span class="comment"></span></div>
<div class="line"><a name="l00103"></a><span class="lineno"> 103</span> <span class="comment"> /// @c argument_type is the type of the argument</span></div>
<div class="line"><a name="l00104"></a><span class="lineno"><a class="line" href="a01003.html#a6e96c92b2592035c938f85ab1da1c876"> 104</a></span> <span class="comment"></span> <span class="keyword">typedef</span> _Arg <a class="code" href="a01003.html#a6e96c92b2592035c938f85ab1da1c876">argument_type</a>; </div>
<div class="line"><a name="l00105"></a><span class="lineno"> 105</span> <span class="comment"></span></div>
<div class="line"><a name="l00106"></a><span class="lineno"> 106</span> <span class="comment"> /// @c result_type is the return type</span></div>
<div class="line"><a name="l00107"></a><span class="lineno"><a class="line" href="a01003.html#a70d48de710aa15c5e811cbcf6c8bdd61"> 107</a></span> <span class="comment"></span> <span class="keyword">typedef</span> _Result <a class="code" href="a01003.html#a70d48de710aa15c5e811cbcf6c8bdd61">result_type</a>; </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> <span class="comment"></span></div>
<div class="line"><a name="l00110"></a><span class="lineno"> 110</span> <span class="comment"> /**</span></div>
<div class="line"><a name="l00111"></a><span class="lineno"> 111</span> <span class="comment"> * This is one of the @link functors functor base classes@endlink.</span></div>
<div class="line"><a name="l00112"></a><span class="lineno"> 112</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00113"></a><span class="lineno"> 113</span>  <span class="keyword">template</span><<span class="keyword">typename</span> _Arg1, <span class="keyword">typename</span> _Arg2, <span class="keyword">typename</span> _Result></div>
<div class="line"><a name="l00114"></a><span class="lineno"><a class="line" href="a00454.html"> 114</a></span>  <span class="keyword">struct </span><a class="code" href="a00454.html">binary_function</a></div>
<div class="line"><a name="l00115"></a><span class="lineno"> 115</span>  {<span class="comment"></span></div>
<div class="line"><a name="l00116"></a><span class="lineno"> 116</span> <span class="comment"> /// @c first_argument_type is the type of the first argument</span></div>
<div class="line"><a name="l00117"></a><span class="lineno"><a class="line" href="a00454.html#ad907337549df2e1a3c3dbca8e0693dba"> 117</a></span> <span class="comment"></span> <span class="keyword">typedef</span> _Arg1 <a class="code" href="a00454.html#ad907337549df2e1a3c3dbca8e0693dba">first_argument_type</a>; </div>
<div class="line"><a name="l00118"></a><span class="lineno"> 118</span> <span class="comment"></span></div>
<div class="line"><a name="l00119"></a><span class="lineno"> 119</span> <span class="comment"> /// @c second_argument_type is the type of the second argument</span></div>
<div class="line"><a name="l00120"></a><span class="lineno"><a class="line" href="a00454.html#aae0f69fe498930627177ff1f06d0ef9f"> 120</a></span> <span class="comment"></span> <span class="keyword">typedef</span> _Arg2 <a class="code" href="a00454.html#aae0f69fe498930627177ff1f06d0ef9f">second_argument_type</a>;</div>
<div class="line"><a name="l00121"></a><span class="lineno"> 121</span> <span class="comment"></span></div>
<div class="line"><a name="l00122"></a><span class="lineno"> 122</span> <span class="comment"> /// @c result_type is the return type</span></div>
<div class="line"><a name="l00123"></a><span class="lineno"><a class="line" href="a00454.html#a5fe0082d5851e1be6383ad8d8493264e"> 123</a></span> <span class="comment"></span> <span class="keyword">typedef</span> _Result <a class="code" href="a00454.html#a5fe0082d5851e1be6383ad8d8493264e">result_type</a>;</div>
<div class="line"><a name="l00124"></a><span class="lineno"> 124</span>  };<span class="comment"></span></div>
<div class="line"><a name="l00125"></a><span class="lineno"> 125</span> <span class="comment"> /** @} */</span></div>
<div class="line"><a name="l00126"></a><span class="lineno"> 126</span> </div>
<div class="line"><a name="l00127"></a><span class="lineno"> 127</span>  <span class="comment">// 20.3.2 arithmetic</span><span class="comment"></span></div>
<div class="line"><a name="l00128"></a><span class="lineno"> 128</span> <span class="comment"> /** @defgroup arithmetic_functors Arithmetic Classes</span></div>
<div class="line"><a name="l00129"></a><span class="lineno"> 129</span> <span class="comment"> * @ingroup functors</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="comment"> * Because basic math often needs to be done during an algorithm,</span></div>
<div class="line"><a name="l00132"></a><span class="lineno"> 132</span> <span class="comment"> * the library provides functors for those operations. See the</span></div>
<div class="line"><a name="l00133"></a><span class="lineno"> 133</span> <span class="comment"> * documentation for @link functors the base classes@endlink</span></div>
<div class="line"><a name="l00134"></a><span class="lineno"> 134</span> <span class="comment"> * for examples of their use.</span></div>
<div class="line"><a name="l00135"></a><span class="lineno"> 135</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00136"></a><span class="lineno"> 136</span> <span class="comment"> * @{</span></div>
<div class="line"><a name="l00137"></a><span class="lineno"> 137</span> <span class="comment"> */</span><span class="comment"></span></div>
<div class="line"><a name="l00138"></a><span class="lineno"> 138</span> <span class="comment"> /// One of the @link arithmetic_functors math functors@endlink.</span></div>
<div class="line"><a name="l00139"></a><span class="lineno"> 139</span> <span class="comment"></span> <span class="keyword">template</span><<span class="keyword">typename</span> _Tp></div>
<div class="line"><a name="l00140"></a><span class="lineno"><a class="line" href="a00937.html"> 140</a></span>  <span class="keyword">struct </span><a class="code" href="a00937.html">plus</a> : <span class="keyword">public</span> <a class="code" href="a00454.html">binary_function</a><_Tp, _Tp, _Tp></div>
<div class="line"><a name="l00141"></a><span class="lineno"> 141</span>  {</div>
<div class="line"><a name="l00142"></a><span class="lineno"> 142</span>  _Tp</div>
<div class="line"><a name="l00143"></a><span class="lineno"> 143</span>  operator()(<span class="keyword">const</span> _Tp& __x, <span class="keyword">const</span> _Tp& __y)<span class="keyword"> const</span></div>
<div class="line"><a name="l00144"></a><span class="lineno"> 144</span> <span class="keyword"> </span>{ <span class="keywordflow">return</span> __x + __y; }</div>
<div class="line"><a name="l00145"></a><span class="lineno"> 145</span>  };</div>
<div class="line"><a name="l00146"></a><span class="lineno"> 146</span> <span class="comment"></span></div>
<div class="line"><a name="l00147"></a><span class="lineno"> 147</span> <span class="comment"> /// One of the @link arithmetic_functors math functors@endlink.</span></div>
<div class="line"><a name="l00148"></a><span class="lineno"> 148</span> <span class="comment"></span> <span class="keyword">template</span><<span class="keyword">typename</span> _Tp></div>
<div class="line"><a name="l00149"></a><span class="lineno"><a class="line" href="a00882.html"> 149</a></span>  <span class="keyword">struct </span><a class="code" href="a00882.html">minus</a> : <span class="keyword">public</span> <a class="code" href="a00454.html">binary_function</a><_Tp, _Tp, _Tp></div>
<div class="line"><a name="l00150"></a><span class="lineno"> 150</span>  {</div>
<div class="line"><a name="l00151"></a><span class="lineno"> 151</span>  _Tp</div>
<div class="line"><a name="l00152"></a><span class="lineno"> 152</span>  operator()(<span class="keyword">const</span> _Tp& __x, <span class="keyword">const</span> _Tp& __y)<span class="keyword"> const</span></div>
<div class="line"><a name="l00153"></a><span class="lineno"> 153</span> <span class="keyword"> </span>{ <span class="keywordflow">return</span> __x - __y; }</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> <span class="comment"></span></div>
<div class="line"><a name="l00156"></a><span class="lineno"> 156</span> <span class="comment"> /// One of the @link arithmetic_functors math functors@endlink.</span></div>
<div class="line"><a name="l00157"></a><span class="lineno"> 157</span> <span class="comment"></span> <span class="keyword">template</span><<span class="keyword">typename</span> _Tp></div>
<div class="line"><a name="l00158"></a><span class="lineno"><a class="line" href="a00891.html"> 158</a></span>  <span class="keyword">struct </span><a class="code" href="a00891.html">multiplies</a> : <span class="keyword">public</span> <a class="code" href="a00454.html">binary_function</a><_Tp, _Tp, _Tp></div>
<div class="line"><a name="l00159"></a><span class="lineno"> 159</span>  {</div>
<div class="line"><a name="l00160"></a><span class="lineno"> 160</span>  _Tp</div>
<div class="line"><a name="l00161"></a><span class="lineno"> 161</span>  operator()(<span class="keyword">const</span> _Tp& __x, <span class="keyword">const</span> _Tp& __y)<span class="keyword"> const</span></div>
<div class="line"><a name="l00162"></a><span class="lineno"> 162</span> <span class="keyword"> </span>{ <span class="keywordflow">return</span> __x * __y; }</div>
<div class="line"><a name="l00163"></a><span class="lineno"> 163</span>  };</div>
<div class="line"><a name="l00164"></a><span class="lineno"> 164</span> <span class="comment"></span></div>
<div class="line"><a name="l00165"></a><span class="lineno"> 165</span> <span class="comment"> /// One of the @link arithmetic_functors math functors@endlink.</span></div>
<div class="line"><a name="l00166"></a><span class="lineno"> 166</span> <span class="comment"></span> <span class="keyword">template</span><<span class="keyword">typename</span> _Tp></div>
<div class="line"><a name="l00167"></a><span class="lineno"><a class="line" href="a00711.html"> 167</a></span>  <span class="keyword">struct </span><a class="code" href="a00711.html">divides</a> : <span class="keyword">public</span> <a class="code" href="a00454.html">binary_function</a><_Tp, _Tp, _Tp></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>  _Tp</div>
<div class="line"><a name="l00170"></a><span class="lineno"> 170</span>  operator()(<span class="keyword">const</span> _Tp& __x, <span class="keyword">const</span> _Tp& __y)<span class="keyword"> const</span></div>
<div class="line"><a name="l00171"></a><span class="lineno"> 171</span> <span class="keyword"> </span>{ <span class="keywordflow">return</span> __x / __y; }</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> <span class="comment"></span></div>
<div class="line"><a name="l00174"></a><span class="lineno"> 174</span> <span class="comment"> /// One of the @link arithmetic_functors math functors@endlink.</span></div>
<div class="line"><a name="l00175"></a><span class="lineno"> 175</span> <span class="comment"></span> <span class="keyword">template</span><<span class="keyword">typename</span> _Tp></div>
<div class="line"><a name="l00176"></a><span class="lineno"><a class="line" href="a00883.html"> 176</a></span>  <span class="keyword">struct </span><a class="code" href="a00883.html">modulus</a> : <span class="keyword">public</span> <a class="code" href="a00454.html">binary_function</a><_Tp, _Tp, _Tp></div>
<div class="line"><a name="l00177"></a><span class="lineno"> 177</span>  {</div>
<div class="line"><a name="l00178"></a><span class="lineno"> 178</span>  _Tp</div>
<div class="line"><a name="l00179"></a><span class="lineno"> 179</span>  operator()(<span class="keyword">const</span> _Tp& __x, <span class="keyword">const</span> _Tp& __y)<span class="keyword"> const</span></div>
<div class="line"><a name="l00180"></a><span class="lineno"> 180</span> <span class="keyword"> </span>{ <span class="keywordflow">return</span> __x % __y; }</div>
<div class="line"><a name="l00181"></a><span class="lineno"> 181</span>  };</div>
<div class="line"><a name="l00182"></a><span class="lineno"> 182</span> <span class="comment"></span></div>
<div class="line"><a name="l00183"></a><span class="lineno"> 183</span> <span class="comment"> /// One of the @link arithmetic_functors math functors@endlink.</span></div>
<div class="line"><a name="l00184"></a><span class="lineno"> 184</span> <span class="comment"></span> <span class="keyword">template</span><<span class="keyword">typename</span> _Tp></div>
<div class="line"><a name="l00185"></a><span class="lineno"><a class="line" href="a00894.html"> 185</a></span>  <span class="keyword">struct </span><a class="code" href="a00894.html">negate</a> : <span class="keyword">public</span> <a class="code" href="a01003.html">unary_function</a><_Tp, _Tp></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>  _Tp</div>
<div class="line"><a name="l00188"></a><span class="lineno"> 188</span>  operator()(<span class="keyword">const</span> _Tp& __x)<span class="keyword"> const</span></div>
<div class="line"><a name="l00189"></a><span class="lineno"> 189</span> <span class="keyword"> </span>{ <span class="keywordflow">return</span> -__x; }</div>
<div class="line"><a name="l00190"></a><span class="lineno"> 190</span>  };<span class="comment"></span></div>
<div class="line"><a name="l00191"></a><span class="lineno"> 191</span> <span class="comment"> /** @} */</span></div>
<div class="line"><a name="l00192"></a><span class="lineno"> 192</span> </div>
<div class="line"><a name="l00193"></a><span class="lineno"> 193</span>  <span class="comment">// 20.3.3 comparisons</span><span class="comment"></span></div>
<div class="line"><a name="l00194"></a><span class="lineno"> 194</span> <span class="comment"> /** @defgroup comparison_functors Comparison Classes</span></div>
<div class="line"><a name="l00195"></a><span class="lineno"> 195</span> <span class="comment"> * @ingroup functors</span></div>
<div class="line"><a name="l00196"></a><span class="lineno"> 196</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00197"></a><span class="lineno"> 197</span> <span class="comment"> * The library provides six wrapper functors for all the basic comparisons</span></div>
<div class="line"><a name="l00198"></a><span class="lineno"> 198</span> <span class="comment"> * in C++, like @c <.</span></div>
<div class="line"><a name="l00199"></a><span class="lineno"> 199</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00200"></a><span class="lineno"> 200</span> <span class="comment"> * @{</span></div>
<div class="line"><a name="l00201"></a><span class="lineno"> 201</span> <span class="comment"> */</span><span class="comment"></span></div>
<div class="line"><a name="l00202"></a><span class="lineno"> 202</span> <span class="comment"> /// One of the @link comparison_functors comparison functors@endlink.</span></div>
<div class="line"><a name="l00203"></a><span class="lineno"> 203</span> <span class="comment"></span> <span class="keyword">template</span><<span class="keyword">typename</span> _Tp></div>
<div class="line"><a name="l00204"></a><span class="lineno"><a class="line" href="a00714.html"> 204</a></span>  <span class="keyword">struct </span><a class="code" href="a00714.html">equal_to</a> : <span class="keyword">public</span> <a class="code" href="a00454.html">binary_function</a><_Tp, _Tp, bool></div>
<div class="line"><a name="l00205"></a><span class="lineno"> 205</span>  {</div>
<div class="line"><a name="l00206"></a><span class="lineno"> 206</span>  <span class="keywordtype">bool</span></div>
<div class="line"><a name="l00207"></a><span class="lineno"> 207</span>  operator()(<span class="keyword">const</span> _Tp& __x, <span class="keyword">const</span> _Tp& __y)<span class="keyword"> const</span></div>
<div class="line"><a name="l00208"></a><span class="lineno"> 208</span> <span class="keyword"> </span>{ <span class="keywordflow">return</span> __x == __y; }</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> <span class="comment"></span></div>
<div class="line"><a name="l00211"></a><span class="lineno"> 211</span> <span class="comment"> /// One of the @link comparison_functors comparison functors@endlink.</span></div>
<div class="line"><a name="l00212"></a><span class="lineno"> 212</span> <span class="comment"></span> <span class="keyword">template</span><<span class="keyword">typename</span> _Tp></div>
<div class="line"><a name="l00213"></a><span class="lineno"><a class="line" href="a00899.html"> 213</a></span>  <span class="keyword">struct </span><a class="code" href="a00899.html">not_equal_to</a> : <span class="keyword">public</span> <a class="code" href="a00454.html">binary_function</a><_Tp, _Tp, bool></div>
<div class="line"><a name="l00214"></a><span class="lineno"> 214</span>  {</div>
<div class="line"><a name="l00215"></a><span class="lineno"> 215</span>  <span class="keywordtype">bool</span></div>
<div class="line"><a name="l00216"></a><span class="lineno"> 216</span>  operator()(<span class="keyword">const</span> _Tp& __x, <span class="keyword">const</span> _Tp& __y)<span class="keyword"> const</span></div>
<div class="line"><a name="l00217"></a><span class="lineno"> 217</span> <span class="keyword"> </span>{ <span class="keywordflow">return</span> __x != __y; }</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> <span class="comment"></span></div>
<div class="line"><a name="l00220"></a><span class="lineno"> 220</span> <span class="comment"> /// One of the @link comparison_functors comparison functors@endlink.</span></div>
<div class="line"><a name="l00221"></a><span class="lineno"> 221</span> <span class="comment"></span> <span class="keyword">template</span><<span class="keyword">typename</span> _Tp></div>
<div class="line"><a name="l00222"></a><span class="lineno"><a class="line" href="a00735.html"> 222</a></span>  <span class="keyword">struct </span><a class="code" href="a00735.html">greater</a> : <span class="keyword">public</span> <a class="code" href="a00454.html">binary_function</a><_Tp, _Tp, bool></div>
<div class="line"><a name="l00223"></a><span class="lineno"> 223</span>  {</div>
<div class="line"><a name="l00224"></a><span class="lineno"> 224</span>  <span class="keywordtype">bool</span></div>
<div class="line"><a name="l00225"></a><span class="lineno"> 225</span>  operator()(<span class="keyword">const</span> _Tp& __x, <span class="keyword">const</span> _Tp& __y)<span class="keyword"> const</span></div>
<div class="line"><a name="l00226"></a><span class="lineno"> 226</span> <span class="keyword"> </span>{ <span class="keywordflow">return</span> __x > __y; }</div>
<div class="line"><a name="l00227"></a><span class="lineno"> 227</span>  };</div>
<div class="line"><a name="l00228"></a><span class="lineno"> 228</span> <span class="comment"></span></div>
<div class="line"><a name="l00229"></a><span class="lineno"> 229</span> <span class="comment"> /// One of the @link comparison_functors comparison functors@endlink.</span></div>
<div class="line"><a name="l00230"></a><span class="lineno"> 230</span> <span class="comment"></span> <span class="keyword">template</span><<span class="keyword">typename</span> _Tp></div>
<div class="line"><a name="l00231"></a><span class="lineno"><a class="line" href="a00858.html"> 231</a></span>  <span class="keyword">struct </span><a class="code" href="a00858.html">less</a> : <span class="keyword">public</span> <a class="code" href="a00454.html">binary_function</a><_Tp, _Tp, bool></div>
<div class="line"><a name="l00232"></a><span class="lineno"> 232</span>  {</div>
<div class="line"><a name="l00233"></a><span class="lineno"> 233</span>  <span class="keywordtype">bool</span></div>
<div class="line"><a name="l00234"></a><span class="lineno"> 234</span>  operator()(<span class="keyword">const</span> _Tp& __x, <span class="keyword">const</span> _Tp& __y)<span class="keyword"> const</span></div>
<div class="line"><a name="l00235"></a><span class="lineno"> 235</span> <span class="keyword"> </span>{ <span class="keywordflow">return</span> __x < __y; }</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> <span class="comment"></span></div>
<div class="line"><a name="l00238"></a><span class="lineno"> 238</span> <span class="comment"> /// One of the @link comparison_functors comparison functors@endlink.</span></div>
<div class="line"><a name="l00239"></a><span class="lineno"> 239</span> <span class="comment"></span> <span class="keyword">template</span><<span class="keyword">typename</span> _Tp></div>
<div class="line"><a name="l00240"></a><span class="lineno"><a class="line" href="a00736.html"> 240</a></span>  <span class="keyword">struct </span><a class="code" href="a00736.html">greater_equal</a> : <span class="keyword">public</span> <a class="code" href="a00454.html">binary_function</a><_Tp, _Tp, bool></div>
<div class="line"><a name="l00241"></a><span class="lineno"> 241</span>  {</div>
<div class="line"><a name="l00242"></a><span class="lineno"> 242</span>  <span class="keywordtype">bool</span></div>
<div class="line"><a name="l00243"></a><span class="lineno"> 243</span>  operator()(<span class="keyword">const</span> _Tp& __x, <span class="keyword">const</span> _Tp& __y)<span class="keyword"> const</span></div>
<div class="line"><a name="l00244"></a><span class="lineno"> 244</span> <span class="keyword"> </span>{ <span class="keywordflow">return</span> __x >= __y; }</div>
<div class="line"><a name="l00245"></a><span class="lineno"> 245</span>  };</div>
<div class="line"><a name="l00246"></a><span class="lineno"> 246</span> <span class="comment"></span></div>
<div class="line"><a name="l00247"></a><span class="lineno"> 247</span> <span class="comment"> /// One of the @link comparison_functors comparison functors@endlink.</span></div>
<div class="line"><a name="l00248"></a><span class="lineno"> 248</span> <span class="comment"></span> <span class="keyword">template</span><<span class="keyword">typename</span> _Tp></div>
<div class="line"><a name="l00249"></a><span class="lineno"><a class="line" href="a00859.html"> 249</a></span>  <span class="keyword">struct </span><a class="code" href="a00859.html">less_equal</a> : <span class="keyword">public</span> <a class="code" href="a00454.html">binary_function</a><_Tp, _Tp, bool></div>
<div class="line"><a name="l00250"></a><span class="lineno"> 250</span>  {</div>
<div class="line"><a name="l00251"></a><span class="lineno"> 251</span>  <span class="keywordtype">bool</span></div>
<div class="line"><a name="l00252"></a><span class="lineno"> 252</span>  operator()(<span class="keyword">const</span> _Tp& __x, <span class="keyword">const</span> _Tp& __y)<span class="keyword"> const</span></div>
<div class="line"><a name="l00253"></a><span class="lineno"> 253</span> <span class="keyword"> </span>{ <span class="keywordflow">return</span> __x <= __y; }</div>
<div class="line"><a name="l00254"></a><span class="lineno"> 254</span>  };<span class="comment"></span></div>
<div class="line"><a name="l00255"></a><span class="lineno"> 255</span> <span class="comment"> /** @} */</span></div>
<div class="line"><a name="l00256"></a><span class="lineno"> 256</span> </div>
<div class="line"><a name="l00257"></a><span class="lineno"> 257</span>  <span class="comment">// 20.3.4 logical operations</span><span class="comment"></span></div>
<div class="line"><a name="l00258"></a><span class="lineno"> 258</span> <span class="comment"> /** @defgroup logical_functors Boolean Operations Classes</span></div>
<div class="line"><a name="l00259"></a><span class="lineno"> 259</span> <span class="comment"> * @ingroup functors</span></div>
<div class="line"><a name="l00260"></a><span class="lineno"> 260</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00261"></a><span class="lineno"> 261</span> <span class="comment"> * Here are wrapper functors for Boolean operations: @c &&, @c ||,</span></div>
<div class="line"><a name="l00262"></a><span class="lineno"> 262</span> <span class="comment"> * and @c !.</span></div>
<div class="line"><a name="l00263"></a><span class="lineno"> 263</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00264"></a><span class="lineno"> 264</span> <span class="comment"> * @{</span></div>
<div class="line"><a name="l00265"></a><span class="lineno"> 265</span> <span class="comment"> */</span><span class="comment"></span></div>
<div class="line"><a name="l00266"></a><span class="lineno"> 266</span> <span class="comment"> /// One of the @link logical_functors Boolean operations functors@endlink.</span></div>
<div class="line"><a name="l00267"></a><span class="lineno"> 267</span> <span class="comment"></span> <span class="keyword">template</span><<span class="keyword">typename</span> _Tp></div>
<div class="line"><a name="l00268"></a><span class="lineno"><a class="line" href="a00866.html"> 268</a></span>  <span class="keyword">struct </span><a class="code" href="a00866.html">logical_and</a> : <span class="keyword">public</span> <a class="code" href="a00454.html">binary_function</a><_Tp, _Tp, bool></div>
<div class="line"><a name="l00269"></a><span class="lineno"> 269</span>  {</div>
<div class="line"><a name="l00270"></a><span class="lineno"> 270</span>  <span class="keywordtype">bool</span></div>
<div class="line"><a name="l00271"></a><span class="lineno"> 271</span>  operator()(<span class="keyword">const</span> _Tp& __x, <span class="keyword">const</span> _Tp& __y)<span class="keyword"> const</span></div>
<div class="line"><a name="l00272"></a><span class="lineno"> 272</span> <span class="keyword"> </span>{ <span class="keywordflow">return</span> __x && __y; }</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> <span class="comment"></span></div>
<div class="line"><a name="l00275"></a><span class="lineno"> 275</span> <span class="comment"> /// One of the @link logical_functors Boolean operations functors@endlink.</span></div>
<div class="line"><a name="l00276"></a><span class="lineno"> 276</span> <span class="comment"></span> <span class="keyword">template</span><<span class="keyword">typename</span> _Tp></div>
<div class="line"><a name="l00277"></a><span class="lineno"><a class="line" href="a00868.html"> 277</a></span>  <span class="keyword">struct </span><a class="code" href="a00868.html">logical_or</a> : <span class="keyword">public</span> <a class="code" href="a00454.html">binary_function</a><_Tp, _Tp, bool></div>
<div class="line"><a name="l00278"></a><span class="lineno"> 278</span>  {</div>
<div class="line"><a name="l00279"></a><span class="lineno"> 279</span>  <span class="keywordtype">bool</span></div>
<div class="line"><a name="l00280"></a><span class="lineno"> 280</span>  operator()(<span class="keyword">const</span> _Tp& __x, <span class="keyword">const</span> _Tp& __y)<span class="keyword"> const</span></div>
<div class="line"><a name="l00281"></a><span class="lineno"> 281</span> <span class="keyword"> </span>{ <span class="keywordflow">return</span> __x || __y; }</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> <span class="comment"></span></div>
<div class="line"><a name="l00284"></a><span class="lineno"> 284</span> <span class="comment"> /// One of the @link logical_functors Boolean operations functors@endlink.</span></div>
<div class="line"><a name="l00285"></a><span class="lineno"> 285</span> <span class="comment"></span> <span class="keyword">template</span><<span class="keyword">typename</span> _Tp></div>
<div class="line"><a name="l00286"></a><span class="lineno"><a class="line" href="a00867.html"> 286</a></span>  <span class="keyword">struct </span><a class="code" href="a00867.html">logical_not</a> : <span class="keyword">public</span> <a class="code" href="a01003.html">unary_function</a><_Tp, bool></div>
<div class="line"><a name="l00287"></a><span class="lineno"> 287</span>  {</div>
<div class="line"><a name="l00288"></a><span class="lineno"> 288</span>  <span class="keywordtype">bool</span></div>
<div class="line"><a name="l00289"></a><span class="lineno"> 289</span>  operator()(<span class="keyword">const</span> _Tp& __x)<span class="keyword"> const</span></div>
<div class="line"><a name="l00290"></a><span class="lineno"> 290</span> <span class="keyword"> </span>{ <span class="keywordflow">return</span> !__x; }</div>
<div class="line"><a name="l00291"></a><span class="lineno"> 291</span>  };<span class="comment"></span></div>
<div class="line"><a name="l00292"></a><span class="lineno"> 292</span> <span class="comment"> /** @} */</span></div>
<div class="line"><a name="l00293"></a><span class="lineno"> 293</span> </div>
<div class="line"><a name="l00294"></a><span class="lineno"> 294</span>  <span class="comment">// _GLIBCXX_RESOLVE_LIB_DEFECTS</span></div>
<div class="line"><a name="l00295"></a><span class="lineno"> 295</span>  <span class="comment">// DR 660. Missing Bitwise Operations.</span></div>
<div class="line"><a name="l00296"></a><span class="lineno"> 296</span>  <span class="keyword">template</span><<span class="keyword">typename</span> _Tp></div>
<div class="line"><a name="l00297"></a><span class="lineno"> 297</span>  <span class="keyword">struct </span>bit_and : <span class="keyword">public</span> <a class="code" href="a00454.html">binary_function</a><_Tp, _Tp, _Tp></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>  _Tp</div>
<div class="line"><a name="l00300"></a><span class="lineno"> 300</span>  operator()(<span class="keyword">const</span> _Tp& __x, <span class="keyword">const</span> _Tp& __y)<span class="keyword"> const</span></div>
<div class="line"><a name="l00301"></a><span class="lineno"> 301</span> <span class="keyword"> </span>{ <span class="keywordflow">return</span> __x & __y; }</div>
<div class="line"><a name="l00302"></a><span class="lineno"> 302</span>  };</div>
<div class="line"><a name="l00303"></a><span class="lineno"> 303</span> </div>
<div class="line"><a name="l00304"></a><span class="lineno"> 304</span>  <span class="keyword">template</span><<span class="keyword">typename</span> _Tp></div>
<div class="line"><a name="l00305"></a><span class="lineno"> 305</span>  <span class="keyword">struct </span>bit_or : <span class="keyword">public</span> binary_function<_Tp, _Tp, _Tp></div>
<div class="line"><a name="l00306"></a><span class="lineno"> 306</span>  {</div>
<div class="line"><a name="l00307"></a><span class="lineno"> 307</span>  _Tp</div>
<div class="line"><a name="l00308"></a><span class="lineno"> 308</span>  operator()(<span class="keyword">const</span> _Tp& __x, <span class="keyword">const</span> _Tp& __y)<span class="keyword"> const</span></div>
<div class="line"><a name="l00309"></a><span class="lineno"> 309</span> <span class="keyword"> </span>{ <span class="keywordflow">return</span> __x | __y; }</div>
<div class="line"><a name="l00310"></a><span class="lineno"> 310</span>  };</div>
<div class="line"><a name="l00311"></a><span class="lineno"> 311</span> </div>
<div class="line"><a name="l00312"></a><span class="lineno"> 312</span>  <span class="keyword">template</span><<span class="keyword">typename</span> _Tp></div>
<div class="line"><a name="l00313"></a><span class="lineno"> 313</span>  <span class="keyword">struct </span>bit_xor : <span class="keyword">public</span> binary_function<_Tp, _Tp, _Tp></div>
<div class="line"><a name="l00314"></a><span class="lineno"> 314</span>  {</div>
<div class="line"><a name="l00315"></a><span class="lineno"> 315</span>  _Tp</div>
<div class="line"><a name="l00316"></a><span class="lineno"> 316</span>  operator()(<span class="keyword">const</span> _Tp& __x, <span class="keyword">const</span> _Tp& __y)<span class="keyword"> const</span></div>
<div class="line"><a name="l00317"></a><span class="lineno"> 317</span> <span class="keyword"> </span>{ <span class="keywordflow">return</span> __x ^ __y; }</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> </div>
<div class="line"><a name="l00320"></a><span class="lineno"> 320</span>  <span class="comment">// 20.3.5 negators</span><span class="comment"></span></div>
<div class="line"><a name="l00321"></a><span class="lineno"> 321</span> <span class="comment"> /** @defgroup negators Negators</span></div>
<div class="line"><a name="l00322"></a><span class="lineno"> 322</span> <span class="comment"> * @ingroup functors</span></div>
<div class="line"><a name="l00323"></a><span class="lineno"> 323</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00324"></a><span class="lineno"> 324</span> <span class="comment"> * The functions @c not1 and @c not2 each take a predicate functor</span></div>
<div class="line"><a name="l00325"></a><span class="lineno"> 325</span> <span class="comment"> * and return an instance of @c unary_negate or</span></div>
<div class="line"><a name="l00326"></a><span class="lineno"> 326</span> <span class="comment"> * @c binary_negate, respectively. These classes are functors whose</span></div>
<div class="line"><a name="l00327"></a><span class="lineno"> 327</span> <span class="comment"> * @c operator() performs the stored predicate function and then returns</span></div>
<div class="line"><a name="l00328"></a><span class="lineno"> 328</span> <span class="comment"> * the negation of the result.</span></div>
<div class="line"><a name="l00329"></a><span class="lineno"> 329</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00330"></a><span class="lineno"> 330</span> <span class="comment"> * For example, given a vector of integers and a trivial predicate,</span></div>
<div class="line"><a name="l00331"></a><span class="lineno"> 331</span> <span class="comment"> * \code</span></div>
<div class="line"><a name="l00332"></a><span class="lineno"> 332</span> <span class="comment"> * struct IntGreaterThanThree</span></div>
<div class="line"><a name="l00333"></a><span class="lineno"> 333</span> <span class="comment"> * : public std::unary_function<int, bool></span></div>
<div class="line"><a name="l00334"></a><span class="lineno"> 334</span> <span class="comment"> * {</span></div>
<div class="line"><a name="l00335"></a><span class="lineno"> 335</span> <span class="comment"> * bool operator() (int x) { return x > 3; }</span></div>
<div class="line"><a name="l00336"></a><span class="lineno"> 336</span> <span class="comment"> * };</span></div>
<div class="line"><a name="l00337"></a><span class="lineno"> 337</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00338"></a><span class="lineno"> 338</span> <span class="comment"> * std::find_if (v.begin(), v.end(), not1(IntGreaterThanThree()));</span></div>
<div class="line"><a name="l00339"></a><span class="lineno"> 339</span> <span class="comment"> * \endcode</span></div>
<div class="line"><a name="l00340"></a><span class="lineno"> 340</span> <span class="comment"> * The call to @c find_if will locate the first index (i) of @c v for which</span></div>
<div class="line"><a name="l00341"></a><span class="lineno"> 341</span> <span class="comment"> * <code>!(v[i] > 3)</code> is true.</span></div>
<div class="line"><a name="l00342"></a><span class="lineno"> 342</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00343"></a><span class="lineno"> 343</span> <span class="comment"> * The not1/unary_negate combination works on predicates taking a single</span></div>
<div class="line"><a name="l00344"></a><span class="lineno"> 344</span> <span class="comment"> * argument. The not2/binary_negate combination works on predicates which</span></div>
<div class="line"><a name="l00345"></a><span class="lineno"> 345</span> <span class="comment"> * take two arguments.</span></div>
<div class="line"><a name="l00346"></a><span class="lineno"> 346</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00347"></a><span class="lineno"> 347</span> <span class="comment"> * @{</span></div>
<div class="line"><a name="l00348"></a><span class="lineno"> 348</span> <span class="comment"> */</span><span class="comment"></span></div>
<div class="line"><a name="l00349"></a><span class="lineno"> 349</span> <span class="comment"> /// One of the @link negators negation functors@endlink.</span></div>
<div class="line"><a name="l00350"></a><span class="lineno"> 350</span> <span class="comment"></span> <span class="keyword">template</span><<span class="keyword">typename</span> _Predicate></div>
<div class="line"><a name="l00351"></a><span class="lineno"><a class="line" href="a01004.html"> 351</a></span>  <span class="keyword">class </span><a class="code" href="a01004.html">unary_negate</a></div>
<div class="line"><a name="l00352"></a><span class="lineno"> 352</span>  : <span class="keyword">public</span> <a class="code" href="a01003.html">unary_function</a><typename _Predicate::argument_type, bool></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>  <span class="keyword">protected</span>:</div>
<div class="line"><a name="l00355"></a><span class="lineno"> 355</span>  _Predicate _M_pred;</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>  <span class="keyword">public</span>:</div>
<div class="line"><a name="l00358"></a><span class="lineno"> 358</span>  <span class="keyword">explicit</span></div>
<div class="line"><a name="l00359"></a><span class="lineno"> 359</span>  <a class="code" href="a01004.html">unary_negate</a>(<span class="keyword">const</span> _Predicate& __x) : _M_pred(__x) { }</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>  <span class="keywordtype">bool</span></div>
<div class="line"><a name="l00362"></a><span class="lineno"> 362</span>  operator()(<span class="keyword">const</span> <span class="keyword">typename</span> _Predicate::argument_type& __x)<span class="keyword"> const</span></div>
<div class="line"><a name="l00363"></a><span class="lineno"> 363</span> <span class="keyword"> </span>{ <span class="keywordflow">return</span> !_M_pred(__x); }</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> <span class="comment"></span></div>
<div class="line"><a name="l00366"></a><span class="lineno"> 366</span> <span class="comment"> /// One of the @link negators negation functors@endlink.</span></div>
<div class="line"><a name="l00367"></a><span class="lineno"> 367</span> <span class="comment"></span> <span class="keyword">template</span><<span class="keyword">typename</span> _Predicate></div>
<div class="line"><a name="l00368"></a><span class="lineno"> 368</span>  <span class="keyword">inline</span> <a class="code" href="a01004.html">unary_negate<_Predicate></a></div>
<div class="line"><a name="l00369"></a><span class="lineno"><a class="line" href="a01721.html#ga1fa77600b0e213eaec448448f702ef40"> 369</a></span>  <a class="code" href="a01721.html#ga1fa77600b0e213eaec448448f702ef40">not1</a>(<span class="keyword">const</span> _Predicate& __pred)</div>
<div class="line"><a name="l00370"></a><span class="lineno"> 370</span>  { <span class="keywordflow">return</span> <a class="code" href="a01004.html">unary_negate<_Predicate></a>(__pred); }</div>
<div class="line"><a name="l00371"></a><span class="lineno"> 371</span> <span class="comment"></span></div>
<div class="line"><a name="l00372"></a><span class="lineno"> 372</span> <span class="comment"> /// One of the @link negators negation functors@endlink.</span></div>
<div class="line"><a name="l00373"></a><span class="lineno"> 373</span> <span class="comment"></span> <span class="keyword">template</span><<span class="keyword">typename</span> _Predicate></div>
<div class="line"><a name="l00374"></a><span class="lineno"><a class="line" href="a00655.html"> 374</a></span>  <span class="keyword">class </span><a class="code" href="a00655.html">binary_negate</a></div>
<div class="line"><a name="l00375"></a><span class="lineno"> 375</span>  : <span class="keyword">public</span> <a class="code" href="a00454.html">binary_function</a><typename _Predicate::first_argument_type,</div>
<div class="line"><a name="l00376"></a><span class="lineno"> 376</span>  typename _Predicate::second_argument_type, bool></div>
<div class="line"><a name="l00377"></a><span class="lineno"> 377</span>  {</div>
<div class="line"><a name="l00378"></a><span class="lineno"> 378</span>  <span class="keyword">protected</span>:</div>
<div class="line"><a name="l00379"></a><span class="lineno"> 379</span>  _Predicate _M_pred;</div>
<div class="line"><a name="l00380"></a><span class="lineno"> 380</span> </div>
<div class="line"><a name="l00381"></a><span class="lineno"> 381</span>  <span class="keyword">public</span>:</div>
<div class="line"><a name="l00382"></a><span class="lineno"> 382</span>  <span class="keyword">explicit</span></div>
<div class="line"><a name="l00383"></a><span class="lineno"> 383</span>  <a class="code" href="a00655.html">binary_negate</a>(<span class="keyword">const</span> _Predicate& __x) : _M_pred(__x) { }</div>
<div class="line"><a name="l00384"></a><span class="lineno"> 384</span> </div>
<div class="line"><a name="l00385"></a><span class="lineno"> 385</span>  <span class="keywordtype">bool</span></div>
<div class="line"><a name="l00386"></a><span class="lineno"> 386</span>  operator()(<span class="keyword">const</span> <span class="keyword">typename</span> _Predicate::first_argument_type& __x,</div>
<div class="line"><a name="l00387"></a><span class="lineno"> 387</span>  <span class="keyword">const</span> <span class="keyword">typename</span> _Predicate::second_argument_type& __y)<span class="keyword"> const</span></div>
<div class="line"><a name="l00388"></a><span class="lineno"> 388</span> <span class="keyword"> </span>{ <span class="keywordflow">return</span> !_M_pred(__x, __y); }</div>
<div class="line"><a name="l00389"></a><span class="lineno"> 389</span>  };</div>
<div class="line"><a name="l00390"></a><span class="lineno"> 390</span> <span class="comment"></span></div>
<div class="line"><a name="l00391"></a><span class="lineno"> 391</span> <span class="comment"> /// One of the @link negators negation functors@endlink.</span></div>
<div class="line"><a name="l00392"></a><span class="lineno"> 392</span> <span class="comment"></span> <span class="keyword">template</span><<span class="keyword">typename</span> _Predicate></div>
<div class="line"><a name="l00393"></a><span class="lineno"> 393</span>  <span class="keyword">inline</span> <a class="code" href="a00655.html">binary_negate<_Predicate></a></div>
<div class="line"><a name="l00394"></a><span class="lineno"><a class="line" href="a01721.html#ga5ab22ed0b61c05cdae0da63eeb6e7d33"> 394</a></span>  <a class="code" href="a01721.html#ga5ab22ed0b61c05cdae0da63eeb6e7d33">not2</a>(<span class="keyword">const</span> _Predicate& __pred)</div>
<div class="line"><a name="l00395"></a><span class="lineno"> 395</span>  { <span class="keywordflow">return</span> <a class="code" href="a00655.html">binary_negate<_Predicate></a>(__pred); }<span class="comment"></span></div>
<div class="line"><a name="l00396"></a><span class="lineno"> 396</span> <span class="comment"> /** @} */</span></div>
<div class="line"><a name="l00397"></a><span class="lineno"> 397</span> </div>
<div class="line"><a name="l00398"></a><span class="lineno"> 398</span>  <span class="comment">// 20.3.7 adaptors pointers functions</span><span class="comment"></span></div>
<div class="line"><a name="l00399"></a><span class="lineno"> 399</span> <span class="comment"> /** @defgroup pointer_adaptors Adaptors for pointers to functions</span></div>
<div class="line"><a name="l00400"></a><span class="lineno"> 400</span> <span class="comment"> * @ingroup functors</span></div>
<div class="line"><a name="l00401"></a><span class="lineno"> 401</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00402"></a><span class="lineno"> 402</span> <span class="comment"> * The advantage of function objects over pointers to functions is that</span></div>
<div class="line"><a name="l00403"></a><span class="lineno"> 403</span> <span class="comment"> * the objects in the standard library declare nested typedefs describing</span></div>
<div class="line"><a name="l00404"></a><span class="lineno"> 404</span> <span class="comment"> * their argument and result types with uniform names (e.g., @c result_type</span></div>
<div class="line"><a name="l00405"></a><span class="lineno"> 405</span> <span class="comment"> * from the base classes @c unary_function and @c binary_function).</span></div>
<div class="line"><a name="l00406"></a><span class="lineno"> 406</span> <span class="comment"> * Sometimes those typedefs are required, not just optional.</span></div>
<div class="line"><a name="l00407"></a><span class="lineno"> 407</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00408"></a><span class="lineno"> 408</span> <span class="comment"> * Adaptors are provided to turn pointers to unary (single-argument) and</span></div>
<div class="line"><a name="l00409"></a><span class="lineno"> 409</span> <span class="comment"> * binary (double-argument) functions into function objects. The</span></div>
<div class="line"><a name="l00410"></a><span class="lineno"> 410</span> <span class="comment"> * long-winded functor @c pointer_to_unary_function is constructed with a</span></div>
<div class="line"><a name="l00411"></a><span class="lineno"> 411</span> <span class="comment"> * function pointer @c f, and its @c operator() called with argument @c x</span></div>
<div class="line"><a name="l00412"></a><span class="lineno"> 412</span> <span class="comment"> * returns @c f(x). The functor @c pointer_to_binary_function does the same</span></div>
<div class="line"><a name="l00413"></a><span class="lineno"> 413</span> <span class="comment"> * thing, but with a double-argument @c f and @c operator().</span></div>
<div class="line"><a name="l00414"></a><span class="lineno"> 414</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00415"></a><span class="lineno"> 415</span> <span class="comment"> * The function @c ptr_fun takes a pointer-to-function @c f and constructs</span></div>
<div class="line"><a name="l00416"></a><span class="lineno"> 416</span> <span class="comment"> * an instance of the appropriate functor.</span></div>
<div class="line"><a name="l00417"></a><span class="lineno"> 417</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00418"></a><span class="lineno"> 418</span> <span class="comment"> * @{</span></div>
<div class="line"><a name="l00419"></a><span class="lineno"> 419</span> <span class="comment"> */</span><span class="comment"></span></div>
<div class="line"><a name="l00420"></a><span class="lineno"> 420</span> <span class="comment"> /// One of the @link pointer_adaptors adaptors for function pointers@endlink.</span></div>
<div class="line"><a name="l00421"></a><span class="lineno"> 421</span> <span class="comment"></span> <span class="keyword">template</span><<span class="keyword">typename</span> _Arg, <span class="keyword">typename</span> _Result></div>
<div class="line"><a name="l00422"></a><span class="lineno"><a class="line" href="a00939.html"> 422</a></span>  <span class="keyword">class </span><a class="code" href="a00939.html">pointer_to_unary_function</a> : <span class="keyword">public</span> <a class="code" href="a01003.html">unary_function</a><_Arg, _Result></div>
<div class="line"><a name="l00423"></a><span class="lineno"> 423</span>  {</div>
<div class="line"><a name="l00424"></a><span class="lineno"> 424</span>  <span class="keyword">protected</span>:</div>
<div class="line"><a name="l00425"></a><span class="lineno"> 425</span>  _Result (*_M_ptr)(_Arg);</div>
<div class="line"><a name="l00426"></a><span class="lineno"> 426</span> </div>
<div class="line"><a name="l00427"></a><span class="lineno"> 427</span>  <span class="keyword">public</span>:</div>
<div class="line"><a name="l00428"></a><span class="lineno"> 428</span>  <a class="code" href="a00939.html">pointer_to_unary_function</a>() { }</div>
<div class="line"><a name="l00429"></a><span class="lineno"> 429</span> </div>
<div class="line"><a name="l00430"></a><span class="lineno"> 430</span>  <span class="keyword">explicit</span></div>
<div class="line"><a name="l00431"></a><span class="lineno"> 431</span>  <a class="code" href="a00939.html">pointer_to_unary_function</a>(_Result (*__x)(_Arg))</div>
<div class="line"><a name="l00432"></a><span class="lineno"> 432</span>  : _M_ptr(__x) { }</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>  _Result</div>
<div class="line"><a name="l00435"></a><span class="lineno"> 435</span>  operator()(_Arg __x)<span class="keyword"> const</span></div>
<div class="line"><a name="l00436"></a><span class="lineno"> 436</span> <span class="keyword"> </span>{ <span class="keywordflow">return</span> _M_ptr(__x); }</div>
<div class="line"><a name="l00437"></a><span class="lineno"> 437</span>  };</div>
<div class="line"><a name="l00438"></a><span class="lineno"> 438</span> <span class="comment"></span></div>
<div class="line"><a name="l00439"></a><span class="lineno"> 439</span> <span class="comment"> /// One of the @link pointer_adaptors adaptors for function pointers@endlink.</span></div>
<div class="line"><a name="l00440"></a><span class="lineno"> 440</span> <span class="comment"></span> <span class="keyword">template</span><<span class="keyword">typename</span> _Arg, <span class="keyword">typename</span> _Result></div>
<div class="line"><a name="l00441"></a><span class="lineno"> 441</span>  <span class="keyword">inline</span> <a class="code" href="a00939.html">pointer_to_unary_function<_Arg, _Result></a></div>
<div class="line"><a name="l00442"></a><span class="lineno"><a class="line" href="a01722.html#gaee61fcee12458d9d61b10f07de908134"> 442</a></span>  <a class="code" href="a01722.html#gaee61fcee12458d9d61b10f07de908134">ptr_fun</a>(_Result (*__x)(_Arg))</div>
<div class="line"><a name="l00443"></a><span class="lineno"> 443</span>  { <span class="keywordflow">return</span> <a class="code" href="a00939.html">pointer_to_unary_function<_Arg, _Result></a>(__x); }</div>
<div class="line"><a name="l00444"></a><span class="lineno"> 444</span> <span class="comment"></span></div>
<div class="line"><a name="l00445"></a><span class="lineno"> 445</span> <span class="comment"> /// One of the @link pointer_adaptors adaptors for function pointers@endlink.</span></div>
<div class="line"><a name="l00446"></a><span class="lineno"> 446</span> <span class="comment"></span> <span class="keyword">template</span><<span class="keyword">typename</span> _Arg1, <span class="keyword">typename</span> _Arg2, <span class="keyword">typename</span> _Result></div>
<div class="line"><a name="l00447"></a><span class="lineno"><a class="line" href="a00938.html"> 447</a></span>  <span class="keyword">class </span><a class="code" href="a00938.html">pointer_to_binary_function</a></div>
<div class="line"><a name="l00448"></a><span class="lineno"> 448</span>  : <span class="keyword">public</span> <a class="code" href="a00454.html">binary_function</a><_Arg1, _Arg2, _Result></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>  <span class="keyword">protected</span>:</div>
<div class="line"><a name="l00451"></a><span class="lineno"> 451</span>  _Result (*_M_ptr)(_Arg1, _Arg2);</div>
<div class="line"><a name="l00452"></a><span class="lineno"> 452</span> </div>
<div class="line"><a name="l00453"></a><span class="lineno"> 453</span>  <span class="keyword">public</span>:</div>
<div class="line"><a name="l00454"></a><span class="lineno"> 454</span>  <a class="code" href="a00938.html">pointer_to_binary_function</a>() { }</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>  <span class="keyword">explicit</span></div>
<div class="line"><a name="l00457"></a><span class="lineno"> 457</span>  <a class="code" href="a00938.html">pointer_to_binary_function</a>(_Result (*__x)(_Arg1, _Arg2))</div>
<div class="line"><a name="l00458"></a><span class="lineno"> 458</span>  : _M_ptr(__x) { }</div>
<div class="line"><a name="l00459"></a><span class="lineno"> 459</span> </div>
<div class="line"><a name="l00460"></a><span class="lineno"> 460</span>  _Result</div>
<div class="line"><a name="l00461"></a><span class="lineno"> 461</span>  operator()(_Arg1 __x, _Arg2 __y)<span class="keyword"> const</span></div>
<div class="line"><a name="l00462"></a><span class="lineno"> 462</span> <span class="keyword"> </span>{ <span class="keywordflow">return</span> _M_ptr(__x, __y); }</div>
<div class="line"><a name="l00463"></a><span class="lineno"> 463</span>  };</div>
<div class="line"><a name="l00464"></a><span class="lineno"> 464</span> <span class="comment"></span></div>
<div class="line"><a name="l00465"></a><span class="lineno"> 465</span> <span class="comment"> /// One of the @link pointer_adaptors adaptors for function pointers@endlink.</span></div>
<div class="line"><a name="l00466"></a><span class="lineno"> 466</span> <span class="comment"></span> <span class="keyword">template</span><<span class="keyword">typename</span> _Arg1, <span class="keyword">typename</span> _Arg2, <span class="keyword">typename</span> _Result></div>
<div class="line"><a name="l00467"></a><span class="lineno"> 467</span>  <span class="keyword">inline</span> <a class="code" href="a00938.html">pointer_to_binary_function<_Arg1, _Arg2, _Result></a></div>
<div class="line"><a name="l00468"></a><span class="lineno"><a class="line" href="a01722.html#ga2c95cd7ca955ae3a4cbf98593456bd8e"> 468</a></span>  <a class="code" href="a01722.html#gaee61fcee12458d9d61b10f07de908134">ptr_fun</a>(_Result (*__x)(_Arg1, _Arg2))</div>
<div class="line"><a name="l00469"></a><span class="lineno"> 469</span>  { <span class="keywordflow">return</span> <a class="code" href="a00938.html">pointer_to_binary_function<_Arg1, _Arg2, _Result></a>(__x); }<span class="comment"></span></div>
<div class="line"><a name="l00470"></a><span class="lineno"> 470</span> <span class="comment"> /** @} */</span></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>  <span class="keyword">template</span><<span class="keyword">typename</span> _Tp></div>
<div class="line"><a name="l00473"></a><span class="lineno"> 473</span>  <span class="keyword">struct </span>_Identity</div>
<div class="line"><a name="l00474"></a><span class="lineno"> 474</span>  : <span class="keyword">public</span> unary_function<_Tp,_Tp></div>
<div class="line"><a name="l00475"></a><span class="lineno"> 475</span>  {</div>
<div class="line"><a name="l00476"></a><span class="lineno"> 476</span>  _Tp&</div>
<div class="line"><a name="l00477"></a><span class="lineno"> 477</span>  operator()(_Tp& __x)<span class="keyword"> const</span></div>
<div class="line"><a name="l00478"></a><span class="lineno"> 478</span> <span class="keyword"> </span>{ <span class="keywordflow">return</span> __x; }</div>
<div class="line"><a name="l00479"></a><span class="lineno"> 479</span> </div>
<div class="line"><a name="l00480"></a><span class="lineno"> 480</span>  <span class="keyword">const</span> _Tp&</div>
<div class="line"><a name="l00481"></a><span class="lineno"> 481</span>  operator()(<span class="keyword">const</span> _Tp& __x)<span class="keyword"> const</span></div>
<div class="line"><a name="l00482"></a><span class="lineno"> 482</span> <span class="keyword"> </span>{ <span class="keywordflow">return</span> __x; }</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> </div>
<div class="line"><a name="l00485"></a><span class="lineno"> 485</span>  <span class="keyword">template</span><<span class="keyword">typename</span> _Pair></div>
<div class="line"><a name="l00486"></a><span class="lineno"> 486</span>  <span class="keyword">struct </span>_Select1st</div>
<div class="line"><a name="l00487"></a><span class="lineno"> 487</span>  : <span class="keyword">public</span> unary_function<_Pair, typename _Pair::first_type></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>  <span class="keyword">typename</span> _Pair::first_type&</div>
<div class="line"><a name="l00490"></a><span class="lineno"> 490</span>  operator()(_Pair& __x)<span class="keyword"> const</span></div>
<div class="line"><a name="l00491"></a><span class="lineno"> 491</span> <span class="keyword"> </span>{ <span class="keywordflow">return</span> __x.first; }</div>
<div class="line"><a name="l00492"></a><span class="lineno"> 492</span> </div>
<div class="line"><a name="l00493"></a><span class="lineno"> 493</span>  <span class="keyword">const</span> <span class="keyword">typename</span> _Pair::first_type&</div>
<div class="line"><a name="l00494"></a><span class="lineno"> 494</span>  operator()(<span class="keyword">const</span> _Pair& __x)<span class="keyword"> const</span></div>
<div class="line"><a name="l00495"></a><span class="lineno"> 495</span> <span class="keyword"> </span>{ <span class="keywordflow">return</span> __x.first; }</div>
<div class="line"><a name="l00496"></a><span class="lineno"> 496</span> </div>
<div class="line"><a name="l00497"></a><span class="lineno"> 497</span> <span class="preprocessor">#if __cplusplus >= 201103L</span></div>
<div class="line"><a name="l00498"></a><span class="lineno"> 498</span> <span class="preprocessor"></span> <span class="keyword">template</span><<span class="keyword">typename</span> _Pair2></div>
<div class="line"><a name="l00499"></a><span class="lineno"> 499</span>  <span class="keyword">typename</span> _Pair2::first_type&</div>
<div class="line"><a name="l00500"></a><span class="lineno"> 500</span>  operator()(_Pair2& __x)<span class="keyword"> const</span></div>
<div class="line"><a name="l00501"></a><span class="lineno"> 501</span> <span class="keyword"> </span>{ <span class="keywordflow">return</span> __x.first; }</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>  <span class="keyword">template</span><<span class="keyword">typename</span> _Pair2></div>
<div class="line"><a name="l00504"></a><span class="lineno"> 504</span>  <span class="keyword">const</span> <span class="keyword">typename</span> _Pair2::first_type&</div>
<div class="line"><a name="l00505"></a><span class="lineno"> 505</span>  operator()(<span class="keyword">const</span> _Pair2& __x)<span class="keyword"> const</span></div>
<div class="line"><a name="l00506"></a><span class="lineno"> 506</span> <span class="keyword"> </span>{ <span class="keywordflow">return</span> __x.first; }</div>
<div class="line"><a name="l00507"></a><span class="lineno"> 507</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00508"></a><span class="lineno"> 508</span> <span class="preprocessor"></span> };</div>
<div class="line"><a name="l00509"></a><span class="lineno"> 509</span> </div>
<div class="line"><a name="l00510"></a><span class="lineno"> 510</span>  <span class="keyword">template</span><<span class="keyword">typename</span> _Pair></div>
<div class="line"><a name="l00511"></a><span class="lineno"> 511</span>  <span class="keyword">struct </span>_Select2nd</div>
<div class="line"><a name="l00512"></a><span class="lineno"> 512</span>  : <span class="keyword">public</span> unary_function<_Pair, typename _Pair::second_type></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>  <span class="keyword">typename</span> _Pair::second_type&</div>
<div class="line"><a name="l00515"></a><span class="lineno"> 515</span>  operator()(_Pair& __x)<span class="keyword"> const</span></div>
<div class="line"><a name="l00516"></a><span class="lineno"> 516</span> <span class="keyword"> </span>{ <span class="keywordflow">return</span> __x.second; }</div>
<div class="line"><a name="l00517"></a><span class="lineno"> 517</span> </div>
<div class="line"><a name="l00518"></a><span class="lineno"> 518</span>  <span class="keyword">const</span> <span class="keyword">typename</span> _Pair::second_type&</div>
<div class="line"><a name="l00519"></a><span class="lineno"> 519</span>  operator()(<span class="keyword">const</span> _Pair& __x)<span class="keyword"> const</span></div>
<div class="line"><a name="l00520"></a><span class="lineno"> 520</span> <span class="keyword"> </span>{ <span class="keywordflow">return</span> __x.second; }</div>
<div class="line"><a name="l00521"></a><span class="lineno"> 521</span>  };</div>
<div class="line"><a name="l00522"></a><span class="lineno"> 522</span> </div>
<div class="line"><a name="l00523"></a><span class="lineno"> 523</span>  <span class="comment">// 20.3.8 adaptors pointers members</span><span class="comment"></span></div>
<div class="line"><a name="l00524"></a><span class="lineno"> 524</span> <span class="comment"> /** @defgroup memory_adaptors Adaptors for pointers to members</span></div>
<div class="line"><a name="l00525"></a><span class="lineno"> 525</span> <span class="comment"> * @ingroup functors</span></div>
<div class="line"><a name="l00526"></a><span class="lineno"> 526</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00527"></a><span class="lineno"> 527</span> <span class="comment"> * There are a total of 8 = 2^3 function objects in this family.</span></div>
<div class="line"><a name="l00528"></a><span class="lineno"> 528</span> <span class="comment"> * (1) Member functions taking no arguments vs member functions taking</span></div>
<div class="line"><a name="l00529"></a><span class="lineno"> 529</span> <span class="comment"> * one argument.</span></div>
<div class="line"><a name="l00530"></a><span class="lineno"> 530</span> <span class="comment"> * (2) Call through pointer vs call through reference.</span></div>
<div class="line"><a name="l00531"></a><span class="lineno"> 531</span> <span class="comment"> * (3) Const vs non-const member function.</span></div>
<div class="line"><a name="l00532"></a><span class="lineno"> 532</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00533"></a><span class="lineno"> 533</span> <span class="comment"> * All of this complexity is in the function objects themselves. You can</span></div>
<div class="line"><a name="l00534"></a><span class="lineno"> 534</span> <span class="comment"> * ignore it by using the helper function mem_fun and mem_fun_ref,</span></div>
<div class="line"><a name="l00535"></a><span class="lineno"> 535</span> <span class="comment"> * which create whichever type of adaptor is appropriate.</span></div>
<div class="line"><a name="l00536"></a><span class="lineno"> 536</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00537"></a><span class="lineno"> 537</span> <span class="comment"> * @{</span></div>
<div class="line"><a name="l00538"></a><span class="lineno"> 538</span> <span class="comment"> */</span><span class="comment"></span></div>
<div class="line"><a name="l00539"></a><span class="lineno"> 539</span> <span class="comment"> /// One of the @link memory_adaptors adaptors for member</span></div>
<div class="line"><a name="l00540"></a><span class="lineno"> 540</span> <span class="comment"> /// pointers@endlink.</span></div>
<div class="line"><a name="l00541"></a><span class="lineno"> 541</span> <span class="comment"></span> <span class="keyword">template</span><<span class="keyword">typename</span> _Ret, <span class="keyword">typename</span> _Tp></div>
<div class="line"><a name="l00542"></a><span class="lineno"><a class="line" href="a00878.html"> 542</a></span>  <span class="keyword">class </span><a class="code" href="a00878.html">mem_fun_t</a> : <span class="keyword">public</span> <a class="code" href="a01003.html">unary_function</a><_Tp*, _Ret></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>  <span class="keyword">public</span>:</div>
<div class="line"><a name="l00545"></a><span class="lineno"> 545</span>  <span class="keyword">explicit</span></div>
<div class="line"><a name="l00546"></a><span class="lineno"> 546</span>  <a class="code" href="a00878.html">mem_fun_t</a>(_Ret (_Tp::*__pf)())</div>
<div class="line"><a name="l00547"></a><span class="lineno"> 547</span>  : _M_f(__pf) { }</div>
<div class="line"><a name="l00548"></a><span class="lineno"> 548</span> </div>
<div class="line"><a name="l00549"></a><span class="lineno"> 549</span>  _Ret</div>
<div class="line"><a name="l00550"></a><span class="lineno"> 550</span>  operator()(_Tp* __p)<span class="keyword"> const</span></div>
<div class="line"><a name="l00551"></a><span class="lineno"> 551</span> <span class="keyword"> </span>{ <span class="keywordflow">return</span> (__p->*_M_f)(); }</div>
<div class="line"><a name="l00552"></a><span class="lineno"> 552</span> </div>
<div class="line"><a name="l00553"></a><span class="lineno"> 553</span>  <span class="keyword">private</span>:</div>
<div class="line"><a name="l00554"></a><span class="lineno"> 554</span>  _Ret (_Tp::*_M_f)();</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> <span class="comment"></span></div>
<div class="line"><a name="l00557"></a><span class="lineno"> 557</span> <span class="comment"> /// One of the @link memory_adaptors adaptors for member</span></div>
<div class="line"><a name="l00558"></a><span class="lineno"> 558</span> <span class="comment"> /// pointers@endlink.</span></div>
<div class="line"><a name="l00559"></a><span class="lineno"> 559</span> <span class="comment"></span> <span class="keyword">template</span><<span class="keyword">typename</span> _Ret, <span class="keyword">typename</span> _Tp></div>
<div class="line"><a name="l00560"></a><span class="lineno"><a class="line" href="a00693.html"> 560</a></span>  <span class="keyword">class </span><a class="code" href="a00693.html">const_mem_fun_t</a> : <span class="keyword">public</span> <a class="code" href="a01003.html">unary_function</a><const _Tp*, _Ret></div>
<div class="line"><a name="l00561"></a><span class="lineno"> 561</span>  {</div>
<div class="line"><a name="l00562"></a><span class="lineno"> 562</span>  <span class="keyword">public</span>:</div>
<div class="line"><a name="l00563"></a><span class="lineno"> 563</span>  <span class="keyword">explicit</span></div>
<div class="line"><a name="l00564"></a><span class="lineno"> 564</span>  <a class="code" href="a00693.html">const_mem_fun_t</a>(_Ret (_Tp::*__pf)() <span class="keyword">const</span>)</div>
<div class="line"><a name="l00565"></a><span class="lineno"> 565</span>  : _M_f(__pf) { }</div>
<div class="line"><a name="l00566"></a><span class="lineno"> 566</span> </div>
<div class="line"><a name="l00567"></a><span class="lineno"> 567</span>  _Ret</div>
<div class="line"><a name="l00568"></a><span class="lineno"> 568</span>  operator()(<span class="keyword">const</span> _Tp* __p)<span class="keyword"> const</span></div>
<div class="line"><a name="l00569"></a><span class="lineno"> 569</span> <span class="keyword"> </span>{ <span class="keywordflow">return</span> (__p->*_M_f)(); }</div>
<div class="line"><a name="l00570"></a><span class="lineno"> 570</span> </div>
<div class="line"><a name="l00571"></a><span class="lineno"> 571</span>  <span class="keyword">private</span>:</div>
<div class="line"><a name="l00572"></a><span class="lineno"> 572</span>  _Ret (_Tp::*_M_f)() <span class="keyword">const</span>;</div>
<div class="line"><a name="l00573"></a><span class="lineno"> 573</span>  };</div>
<div class="line"><a name="l00574"></a><span class="lineno"> 574</span> <span class="comment"></span></div>
<div class="line"><a name="l00575"></a><span class="lineno"> 575</span> <span class="comment"> /// One of the @link memory_adaptors adaptors for member</span></div>
<div class="line"><a name="l00576"></a><span class="lineno"> 576</span> <span class="comment"> /// pointers@endlink.</span></div>
<div class="line"><a name="l00577"></a><span class="lineno"> 577</span> <span class="comment"></span> <span class="keyword">template</span><<span class="keyword">typename</span> _Ret, <span class="keyword">typename</span> _Tp></div>
<div class="line"><a name="l00578"></a><span class="lineno"><a class="line" href="a00877.html"> 578</a></span>  <span class="keyword">class </span><a class="code" href="a00877.html">mem_fun_ref_t</a> : <span class="keyword">public</span> <a class="code" href="a01003.html">unary_function</a><_Tp, _Ret></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>  <span class="keyword">public</span>:</div>
<div class="line"><a name="l00581"></a><span class="lineno"> 581</span>  <span class="keyword">explicit</span></div>
<div class="line"><a name="l00582"></a><span class="lineno"> 582</span>  <a class="code" href="a00877.html">mem_fun_ref_t</a>(_Ret (_Tp::*__pf)())</div>
<div class="line"><a name="l00583"></a><span class="lineno"> 583</span>  : _M_f(__pf) { }</div>
<div class="line"><a name="l00584"></a><span class="lineno"> 584</span> </div>
<div class="line"><a name="l00585"></a><span class="lineno"> 585</span>  _Ret</div>
<div class="line"><a name="l00586"></a><span class="lineno"> 586</span>  operator()(_Tp& __r)<span class="keyword"> const</span></div>
<div class="line"><a name="l00587"></a><span class="lineno"> 587</span> <span class="keyword"> </span>{ <span class="keywordflow">return</span> (__r.*_M_f)(); }</div>
<div class="line"><a name="l00588"></a><span class="lineno"> 588</span> </div>
<div class="line"><a name="l00589"></a><span class="lineno"> 589</span>  <span class="keyword">private</span>:</div>
<div class="line"><a name="l00590"></a><span class="lineno"> 590</span>  _Ret (_Tp::*_M_f)();</div>
<div class="line"><a name="l00591"></a><span class="lineno"> 591</span>  };</div>
<div class="line"><a name="l00592"></a><span class="lineno"> 592</span> <span class="comment"></span></div>
<div class="line"><a name="l00593"></a><span class="lineno"> 593</span> <span class="comment"> /// One of the @link memory_adaptors adaptors for member</span></div>
<div class="line"><a name="l00594"></a><span class="lineno"> 594</span> <span class="comment"> /// pointers@endlink.</span></div>
<div class="line"><a name="l00595"></a><span class="lineno"> 595</span> <span class="comment"></span> <span class="keyword">template</span><<span class="keyword">typename</span> _Ret, <span class="keyword">typename</span> _Tp></div>
<div class="line"><a name="l00596"></a><span class="lineno"><a class="line" href="a00692.html"> 596</a></span>  <span class="keyword">class </span><a class="code" href="a00692.html">const_mem_fun_ref_t</a> : <span class="keyword">public</span> <a class="code" href="a01003.html">unary_function</a><_Tp, _Ret></div>
<div class="line"><a name="l00597"></a><span class="lineno"> 597</span>  {</div>
<div class="line"><a name="l00598"></a><span class="lineno"> 598</span>  <span class="keyword">public</span>:</div>
<div class="line"><a name="l00599"></a><span class="lineno"> 599</span>  <span class="keyword">explicit</span></div>
<div class="line"><a name="l00600"></a><span class="lineno"> 600</span>  <a class="code" href="a00692.html">const_mem_fun_ref_t</a>(_Ret (_Tp::*__pf)() <span class="keyword">const</span>)</div>
<div class="line"><a name="l00601"></a><span class="lineno"> 601</span>  : _M_f(__pf) { }</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>  _Ret</div>
<div class="line"><a name="l00604"></a><span class="lineno"> 604</span>  operator()(<span class="keyword">const</span> _Tp& __r)<span class="keyword"> const</span></div>
<div class="line"><a name="l00605"></a><span class="lineno"> 605</span> <span class="keyword"> </span>{ <span class="keywordflow">return</span> (__r.*_M_f)(); }</div>
<div class="line"><a name="l00606"></a><span class="lineno"> 606</span> </div>
<div class="line"><a name="l00607"></a><span class="lineno"> 607</span>  <span class="keyword">private</span>:</div>
<div class="line"><a name="l00608"></a><span class="lineno"> 608</span>  _Ret (_Tp::*_M_f)() <span class="keyword">const</span>;</div>
<div class="line"><a name="l00609"></a><span class="lineno"> 609</span>  };</div>
<div class="line"><a name="l00610"></a><span class="lineno"> 610</span> <span class="comment"></span></div>
<div class="line"><a name="l00611"></a><span class="lineno"> 611</span> <span class="comment"> /// One of the @link memory_adaptors adaptors for member</span></div>
<div class="line"><a name="l00612"></a><span class="lineno"> 612</span> <span class="comment"> /// pointers@endlink.</span></div>
<div class="line"><a name="l00613"></a><span class="lineno"> 613</span> <span class="comment"></span> <span class="keyword">template</span><<span class="keyword">typename</span> _Ret, <span class="keyword">typename</span> _Tp, <span class="keyword">typename</span> _Arg></div>
<div class="line"><a name="l00614"></a><span class="lineno"><a class="line" href="a00876.html"> 614</a></span>  <span class="keyword">class </span><a class="code" href="a00876.html">mem_fun1_t</a> : <span class="keyword">public</span> <a class="code" href="a00454.html">binary_function</a><_Tp*, _Arg, _Ret></div>
<div class="line"><a name="l00615"></a><span class="lineno"> 615</span>  {</div>
<div class="line"><a name="l00616"></a><span class="lineno"> 616</span>  <span class="keyword">public</span>:</div>
<div class="line"><a name="l00617"></a><span class="lineno"> 617</span>  <span class="keyword">explicit</span></div>
<div class="line"><a name="l00618"></a><span class="lineno"> 618</span>  <a class="code" href="a00876.html">mem_fun1_t</a>(_Ret (_Tp::*__pf)(_Arg))</div>
<div class="line"><a name="l00619"></a><span class="lineno"> 619</span>  : _M_f(__pf) { }</div>
<div class="line"><a name="l00620"></a><span class="lineno"> 620</span> </div>
<div class="line"><a name="l00621"></a><span class="lineno"> 621</span>  _Ret</div>
<div class="line"><a name="l00622"></a><span class="lineno"> 622</span>  operator()(_Tp* __p, _Arg __x)<span class="keyword"> const</span></div>
<div class="line"><a name="l00623"></a><span class="lineno"> 623</span> <span class="keyword"> </span>{ <span class="keywordflow">return</span> (__p->*_M_f)(__x); }</div>
<div class="line"><a name="l00624"></a><span class="lineno"> 624</span> </div>
<div class="line"><a name="l00625"></a><span class="lineno"> 625</span>  <span class="keyword">private</span>:</div>
<div class="line"><a name="l00626"></a><span class="lineno"> 626</span>  _Ret (_Tp::*_M_f)(_Arg);</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> <span class="comment"></span></div>
<div class="line"><a name="l00629"></a><span class="lineno"> 629</span> <span class="comment"> /// One of the @link memory_adaptors adaptors for member</span></div>
<div class="line"><a name="l00630"></a><span class="lineno"> 630</span> <span class="comment"> /// pointers@endlink.</span></div>
<div class="line"><a name="l00631"></a><span class="lineno"> 631</span> <span class="comment"></span> <span class="keyword">template</span><<span class="keyword">typename</span> _Ret, <span class="keyword">typename</span> _Tp, <span class="keyword">typename</span> _Arg></div>
<div class="line"><a name="l00632"></a><span class="lineno"><a class="line" href="a00691.html"> 632</a></span>  <span class="keyword">class </span><a class="code" href="a00691.html">const_mem_fun1_t</a> : <span class="keyword">public</span> <a class="code" href="a00454.html">binary_function</a><const _Tp*, _Arg, _Ret></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>  <span class="keyword">public</span>:</div>
<div class="line"><a name="l00635"></a><span class="lineno"> 635</span>  <span class="keyword">explicit</span></div>
<div class="line"><a name="l00636"></a><span class="lineno"> 636</span>  <a class="code" href="a00691.html">const_mem_fun1_t</a>(_Ret (_Tp::*__pf)(_Arg) <span class="keyword">const</span>)</div>
<div class="line"><a name="l00637"></a><span class="lineno"> 637</span>  : _M_f(__pf) { }</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>  _Ret</div>
<div class="line"><a name="l00640"></a><span class="lineno"> 640</span>  operator()(<span class="keyword">const</span> _Tp* __p, _Arg __x)<span class="keyword"> const</span></div>
<div class="line"><a name="l00641"></a><span class="lineno"> 641</span> <span class="keyword"> </span>{ <span class="keywordflow">return</span> (__p->*_M_f)(__x); }</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>  <span class="keyword">private</span>:</div>
<div class="line"><a name="l00644"></a><span class="lineno"> 644</span>  _Ret (_Tp::*_M_f)(_Arg) <span class="keyword">const</span>;</div>
<div class="line"><a name="l00645"></a><span class="lineno"> 645</span>  };</div>
<div class="line"><a name="l00646"></a><span class="lineno"> 646</span> <span class="comment"></span></div>
<div class="line"><a name="l00647"></a><span class="lineno"> 647</span> <span class="comment"> /// One of the @link memory_adaptors adaptors for member</span></div>
<div class="line"><a name="l00648"></a><span class="lineno"> 648</span> <span class="comment"> /// pointers@endlink.</span></div>
<div class="line"><a name="l00649"></a><span class="lineno"> 649</span> <span class="comment"></span> <span class="keyword">template</span><<span class="keyword">typename</span> _Ret, <span class="keyword">typename</span> _Tp, <span class="keyword">typename</span> _Arg></div>
<div class="line"><a name="l00650"></a><span class="lineno"><a class="line" href="a00875.html"> 650</a></span>  <span class="keyword">class </span><a class="code" href="a00875.html">mem_fun1_ref_t</a> : <span class="keyword">public</span> <a class="code" href="a00454.html">binary_function</a><_Tp, _Arg, _Ret></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>  <span class="keyword">public</span>:</div>
<div class="line"><a name="l00653"></a><span class="lineno"> 653</span>  <span class="keyword">explicit</span></div>
<div class="line"><a name="l00654"></a><span class="lineno"> 654</span>  <a class="code" href="a00875.html">mem_fun1_ref_t</a>(_Ret (_Tp::*__pf)(_Arg))</div>
<div class="line"><a name="l00655"></a><span class="lineno"> 655</span>  : _M_f(__pf) { }</div>
<div class="line"><a name="l00656"></a><span class="lineno"> 656</span> </div>
<div class="line"><a name="l00657"></a><span class="lineno"> 657</span>  _Ret</div>
<div class="line"><a name="l00658"></a><span class="lineno"> 658</span>  operator()(_Tp& __r, _Arg __x)<span class="keyword"> const</span></div>
<div class="line"><a name="l00659"></a><span class="lineno"> 659</span> <span class="keyword"> </span>{ <span class="keywordflow">return</span> (__r.*_M_f)(__x); }</div>
<div class="line"><a name="l00660"></a><span class="lineno"> 660</span> </div>
<div class="line"><a name="l00661"></a><span class="lineno"> 661</span>  <span class="keyword">private</span>:</div>
<div class="line"><a name="l00662"></a><span class="lineno"> 662</span>  _Ret (_Tp::*_M_f)(_Arg);</div>
<div class="line"><a name="l00663"></a><span class="lineno"> 663</span>  };</div>
<div class="line"><a name="l00664"></a><span class="lineno"> 664</span> <span class="comment"></span></div>
<div class="line"><a name="l00665"></a><span class="lineno"> 665</span> <span class="comment"> /// One of the @link memory_adaptors adaptors for member</span></div>
<div class="line"><a name="l00666"></a><span class="lineno"> 666</span> <span class="comment"> /// pointers@endlink.</span></div>
<div class="line"><a name="l00667"></a><span class="lineno"> 667</span> <span class="comment"></span> <span class="keyword">template</span><<span class="keyword">typename</span> _Ret, <span class="keyword">typename</span> _Tp, <span class="keyword">typename</span> _Arg></div>
<div class="line"><a name="l00668"></a><span class="lineno"><a class="line" href="a00690.html"> 668</a></span>  <span class="keyword">class </span><a class="code" href="a00690.html">const_mem_fun1_ref_t</a> : <span class="keyword">public</span> <a class="code" href="a00454.html">binary_function</a><_Tp, _Arg, _Ret></div>
<div class="line"><a name="l00669"></a><span class="lineno"> 669</span>  {</div>
<div class="line"><a name="l00670"></a><span class="lineno"> 670</span>  <span class="keyword">public</span>:</div>
<div class="line"><a name="l00671"></a><span class="lineno"> 671</span>  <span class="keyword">explicit</span></div>
<div class="line"><a name="l00672"></a><span class="lineno"> 672</span>  <a class="code" href="a00690.html">const_mem_fun1_ref_t</a>(_Ret (_Tp::*__pf)(_Arg) <span class="keyword">const</span>)</div>
<div class="line"><a name="l00673"></a><span class="lineno"> 673</span>  : _M_f(__pf) { }</div>
<div class="line"><a name="l00674"></a><span class="lineno"> 674</span> </div>
<div class="line"><a name="l00675"></a><span class="lineno"> 675</span>  _Ret</div>
<div class="line"><a name="l00676"></a><span class="lineno"> 676</span>  operator()(<span class="keyword">const</span> _Tp& __r, _Arg __x)<span class="keyword"> const</span></div>
<div class="line"><a name="l00677"></a><span class="lineno"> 677</span> <span class="keyword"> </span>{ <span class="keywordflow">return</span> (__r.*_M_f)(__x); }</div>
<div class="line"><a name="l00678"></a><span class="lineno"> 678</span> </div>
<div class="line"><a name="l00679"></a><span class="lineno"> 679</span>  <span class="keyword">private</span>:</div>
<div class="line"><a name="l00680"></a><span class="lineno"> 680</span>  _Ret (_Tp::*_M_f)(_Arg) <span class="keyword">const</span>;</div>
<div class="line"><a name="l00681"></a><span class="lineno"> 681</span>  };</div>
<div class="line"><a name="l00682"></a><span class="lineno"> 682</span> </div>
<div class="line"><a name="l00683"></a><span class="lineno"> 683</span>  <span class="comment">// Mem_fun adaptor helper functions. There are only two:</span></div>
<div class="line"><a name="l00684"></a><span class="lineno"> 684</span>  <span class="comment">// mem_fun and mem_fun_ref.</span></div>
<div class="line"><a name="l00685"></a><span class="lineno"> 685</span>  <span class="keyword">template</span><<span class="keyword">typename</span> _Ret, <span class="keyword">typename</span> _Tp></div>
<div class="line"><a name="l00686"></a><span class="lineno"> 686</span>  <span class="keyword">inline</span> <a class="code" href="a00878.html">mem_fun_t<_Ret, _Tp></a></div>
<div class="line"><a name="l00687"></a><span class="lineno"> 687</span>  mem_fun(_Ret (_Tp::*__f)())</div>
<div class="line"><a name="l00688"></a><span class="lineno"> 688</span>  { <span class="keywordflow">return</span> <a class="code" href="a00878.html">mem_fun_t<_Ret, _Tp></a>(__f); }</div>
<div class="line"><a name="l00689"></a><span class="lineno"> 689</span> </div>
<div class="line"><a name="l00690"></a><span class="lineno"> 690</span>  <span class="keyword">template</span><<span class="keyword">typename</span> _Ret, <span class="keyword">typename</span> _Tp></div>
<div class="line"><a name="l00691"></a><span class="lineno"> 691</span>  <span class="keyword">inline</span> const_mem_fun_t<_Ret, _Tp></div>
<div class="line"><a name="l00692"></a><span class="lineno"> 692</span>  mem_fun(_Ret (_Tp::*__f)() <span class="keyword">const</span>)</div>
<div class="line"><a name="l00693"></a><span class="lineno"> 693</span>  { <span class="keywordflow">return</span> const_mem_fun_t<_Ret, _Tp>(__f); }</div>
<div class="line"><a name="l00694"></a><span class="lineno"> 694</span> </div>
<div class="line"><a name="l00695"></a><span class="lineno"> 695</span>  <span class="keyword">template</span><<span class="keyword">typename</span> _Ret, <span class="keyword">typename</span> _Tp></div>
<div class="line"><a name="l00696"></a><span class="lineno"> 696</span>  <span class="keyword">inline</span> mem_fun_ref_t<_Ret, _Tp></div>
<div class="line"><a name="l00697"></a><span class="lineno"> 697</span>  mem_fun_ref(_Ret (_Tp::*__f)())</div>
<div class="line"><a name="l00698"></a><span class="lineno"> 698</span>  { <span class="keywordflow">return</span> mem_fun_ref_t<_Ret, _Tp>(__f); }</div>
<div class="line"><a name="l00699"></a><span class="lineno"> 699</span> </div>
<div class="line"><a name="l00700"></a><span class="lineno"> 700</span>  <span class="keyword">template</span><<span class="keyword">typename</span> _Ret, <span class="keyword">typename</span> _Tp></div>
<div class="line"><a name="l00701"></a><span class="lineno"> 701</span>  <span class="keyword">inline</span> const_mem_fun_ref_t<_Ret, _Tp></div>
<div class="line"><a name="l00702"></a><span class="lineno"> 702</span>  mem_fun_ref(_Ret (_Tp::*__f)() <span class="keyword">const</span>)</div>
<div class="line"><a name="l00703"></a><span class="lineno"> 703</span>  { <span class="keywordflow">return</span> const_mem_fun_ref_t<_Ret, _Tp>(__f); }</div>
<div class="line"><a name="l00704"></a><span class="lineno"> 704</span> </div>
<div class="line"><a name="l00705"></a><span class="lineno"> 705</span>  <span class="keyword">template</span><<span class="keyword">typename</span> _Ret, <span class="keyword">typename</span> _Tp, <span class="keyword">typename</span> _Arg></div>
<div class="line"><a name="l00706"></a><span class="lineno"> 706</span>  <span class="keyword">inline</span> mem_fun1_t<_Ret, _Tp, _Arg></div>
<div class="line"><a name="l00707"></a><span class="lineno"> 707</span>  mem_fun(_Ret (_Tp::*__f)(_Arg))</div>
<div class="line"><a name="l00708"></a><span class="lineno"> 708</span>  { <span class="keywordflow">return</span> mem_fun1_t<_Ret, _Tp, _Arg>(__f); }</div>
<div class="line"><a name="l00709"></a><span class="lineno"> 709</span> </div>
<div class="line"><a name="l00710"></a><span class="lineno"> 710</span>  <span class="keyword">template</span><<span class="keyword">typename</span> _Ret, <span class="keyword">typename</span> _Tp, <span class="keyword">typename</span> _Arg></div>
<div class="line"><a name="l00711"></a><span class="lineno"> 711</span>  <span class="keyword">inline</span> const_mem_fun1_t<_Ret, _Tp, _Arg></div>
<div class="line"><a name="l00712"></a><span class="lineno"> 712</span>  mem_fun(_Ret (_Tp::*__f)(_Arg) <span class="keyword">const</span>)</div>
<div class="line"><a name="l00713"></a><span class="lineno"> 713</span>  { <span class="keywordflow">return</span> const_mem_fun1_t<_Ret, _Tp, _Arg>(__f); }</div>
<div class="line"><a name="l00714"></a><span class="lineno"> 714</span> </div>
<div class="line"><a name="l00715"></a><span class="lineno"> 715</span>  <span class="keyword">template</span><<span class="keyword">typename</span> _Ret, <span class="keyword">typename</span> _Tp, <span class="keyword">typename</span> _Arg></div>
<div class="line"><a name="l00716"></a><span class="lineno"> 716</span>  <span class="keyword">inline</span> mem_fun1_ref_t<_Ret, _Tp, _Arg></div>
<div class="line"><a name="l00717"></a><span class="lineno"> 717</span>  mem_fun_ref(_Ret (_Tp::*__f)(_Arg))</div>
<div class="line"><a name="l00718"></a><span class="lineno"> 718</span>  { <span class="keywordflow">return</span> mem_fun1_ref_t<_Ret, _Tp, _Arg>(__f); }</div>
<div class="line"><a name="l00719"></a><span class="lineno"> 719</span> </div>
<div class="line"><a name="l00720"></a><span class="lineno"> 720</span>  <span class="keyword">template</span><<span class="keyword">typename</span> _Ret, <span class="keyword">typename</span> _Tp, <span class="keyword">typename</span> _Arg></div>
<div class="line"><a name="l00721"></a><span class="lineno"> 721</span>  <span class="keyword">inline</span> const_mem_fun1_ref_t<_Ret, _Tp, _Arg></div>
<div class="line"><a name="l00722"></a><span class="lineno"> 722</span>  mem_fun_ref(_Ret (_Tp::*__f)(_Arg) <span class="keyword">const</span>)</div>
<div class="line"><a name="l00723"></a><span class="lineno"> 723</span>  { <span class="keywordflow">return</span> const_mem_fun1_ref_t<_Ret, _Tp, _Arg>(__f); }</div>
<div class="line"><a name="l00724"></a><span class="lineno"> 724</span> <span class="comment"></span></div>
<div class="line"><a name="l00725"></a><span class="lineno"> 725</span> <span class="comment"> /** @} */</span></div>
<div class="line"><a name="l00726"></a><span class="lineno"> 726</span> </div>
<div class="line"><a name="l00727"></a><span class="lineno"> 727</span> _GLIBCXX_END_NAMESPACE_VERSION</div>
<div class="line"><a name="l00728"></a><span class="lineno"> 728</span> } <span class="comment">// namespace</span></div>
<div class="line"><a name="l00729"></a><span class="lineno"> 729</span> </div>
<div class="line"><a name="l00730"></a><span class="lineno"> 730</span> <span class="preprocessor">#if (__cplusplus < 201103L) || _GLIBCXX_USE_DEPRECATED</span></div>
<div class="line"><a name="l00731"></a><span class="lineno"> 731</span> <span class="preprocessor"></span><span class="preprocessor"># include <<a class="code" href="a01057.html">backward/binders.h</a>></span></div>
<div class="line"><a name="l00732"></a><span class="lineno"> 732</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00733"></a><span class="lineno"> 733</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00734"></a><span class="lineno"> 734</span> <span class="preprocessor">#endif </span><span class="comment">/* _STL_FUNCTION_H */</span><span class="preprocessor"></span></div>
<div class="ttc" id="a01004_html"><div class="ttname"><a href="a01004.html">std::unary_negate</a></div><div class="ttdoc">One of the negation functors. </div><div class="ttdef"><b>Definition:</b> <a href="a01551_source.html#l00351">stl_function.h:351</a></div></div>
<div class="ttc" id="a01721_html_ga5ab22ed0b61c05cdae0da63eeb6e7d33"><div class="ttname"><a href="a01721.html#ga5ab22ed0b61c05cdae0da63eeb6e7d33">std::not2</a></div><div class="ttdeci">binary_negate< _Predicate > not2(const _Predicate &__pred)</div><div class="ttdoc">One of the negation functors. </div><div class="ttdef"><b>Definition:</b> <a href="a01551_source.html#l00394">stl_function.h:394</a></div></div>
<div class="ttc" id="a00693_html"><div class="ttname"><a href="a00693.html">std::const_mem_fun_t</a></div><div class="ttdoc">One of the adaptors for member pointers. </div><div class="ttdef"><b>Definition:</b> <a href="a01551_source.html#l00560">stl_function.h:560</a></div></div>
<div class="ttc" id="a00868_html"><div class="ttname"><a href="a00868.html">std::logical_or</a></div><div class="ttdoc">One of the Boolean operations functors. </div><div class="ttdef"><b>Definition:</b> <a href="a01551_source.html#l00277">stl_function.h:277</a></div></div>
<div class="ttc" id="a00939_html"><div class="ttname"><a href="a00939.html">std::pointer_to_unary_function</a></div><div class="ttdoc">One of the adaptors for function pointers. </div><div class="ttdef"><b>Definition:</b> <a href="a01551_source.html#l00422">stl_function.h:422</a></div></div>
<div class="ttc" id="a00891_html"><div class="ttname"><a href="a00891.html">std::multiplies</a></div><div class="ttdoc">One of the math functors. </div><div class="ttdef"><b>Definition:</b> <a href="a01551_source.html#l00158">stl_function.h:158</a></div></div>
<div class="ttc" id="a00691_html"><div class="ttname"><a href="a00691.html">std::const_mem_fun1_t</a></div><div class="ttdoc">One of the adaptors for member pointers. </div><div class="ttdef"><b>Definition:</b> <a href="a01551_source.html#l00632">stl_function.h:632</a></div></div>
<div class="ttc" id="a00859_html"><div class="ttname"><a href="a00859.html">std::less_equal</a></div><div class="ttdoc">One of the comparison functors. </div><div class="ttdef"><b>Definition:</b> <a href="a01551_source.html#l00249">stl_function.h:249</a></div></div>
<div class="ttc" id="a00876_html"><div class="ttname"><a href="a00876.html">std::mem_fun1_t</a></div><div class="ttdoc">One of the adaptors for member pointers. </div><div class="ttdef"><b>Definition:</b> <a href="a01551_source.html#l00614">stl_function.h:614</a></div></div>
<div class="ttc" id="a00735_html"><div class="ttname"><a href="a00735.html">std::greater</a></div><div class="ttdoc">One of the comparison functors. </div><div class="ttdef"><b>Definition:</b> <a href="a01551_source.html#l00222">stl_function.h:222</a></div></div>
<div class="ttc" id="a01003_html"><div class="ttname"><a href="a01003.html">std::unary_function</a></div><div class="ttdef"><b>Definition:</b> <a href="a01551_source.html#l00101">stl_function.h:101</a></div></div>
<div class="ttc" id="a00867_html"><div class="ttname"><a href="a00867.html">std::logical_not</a></div><div class="ttdoc">One of the Boolean operations functors. </div><div class="ttdef"><b>Definition:</b> <a href="a01551_source.html#l00286">stl_function.h:286</a></div></div>
<div class="ttc" id="a00655_html"><div class="ttname"><a href="a00655.html">std::binary_negate</a></div><div class="ttdoc">One of the negation functors. </div><div class="ttdef"><b>Definition:</b> <a href="a01551_source.html#l00374">stl_function.h:374</a></div></div>
<div class="ttc" id="a00882_html"><div class="ttname"><a href="a00882.html">std::minus</a></div><div class="ttdoc">One of the math functors. </div><div class="ttdef"><b>Definition:</b> <a href="a01551_source.html#l00149">stl_function.h:149</a></div></div>
<div class="ttc" id="a00899_html"><div class="ttname"><a href="a00899.html">std::not_equal_to</a></div><div class="ttdoc">One of the comparison functors. </div><div class="ttdef"><b>Definition:</b> <a href="a01551_source.html#l00213">stl_function.h:213</a></div></div>
<div class="ttc" id="a00875_html"><div class="ttname"><a href="a00875.html">std::mem_fun1_ref_t</a></div><div class="ttdoc">One of the adaptors for member pointers. </div><div class="ttdef"><b>Definition:</b> <a href="a01551_source.html#l00650">stl_function.h:650</a></div></div>
<div class="ttc" id="a00454_html_a5fe0082d5851e1be6383ad8d8493264e"><div class="ttname"><a href="a00454.html#a5fe0082d5851e1be6383ad8d8493264e">std::binary_function::result_type</a></div><div class="ttdeci">_Result result_type</div><div class="ttdoc">result_type is the return type </div><div class="ttdef"><b>Definition:</b> <a href="a01551_source.html#l00123">stl_function.h:123</a></div></div>
<div class="ttc" id="a00938_html"><div class="ttname"><a href="a00938.html">std::pointer_to_binary_function</a></div><div class="ttdoc">One of the adaptors for function pointers. </div><div class="ttdef"><b>Definition:</b> <a href="a01551_source.html#l00447">stl_function.h:447</a></div></div>
<div class="ttc" id="a00690_html"><div class="ttname"><a href="a00690.html">std::const_mem_fun1_ref_t</a></div><div class="ttdoc">One of the adaptors for member pointers. </div><div class="ttdef"><b>Definition:</b> <a href="a01551_source.html#l00668">stl_function.h:668</a></div></div>
<div class="ttc" id="a00454_html_ad907337549df2e1a3c3dbca8e0693dba"><div class="ttname"><a href="a00454.html#ad907337549df2e1a3c3dbca8e0693dba">std::binary_function::first_argument_type</a></div><div class="ttdeci">_Arg1 first_argument_type</div><div class="ttdoc">first_argument_type is the type of the first argument </div><div class="ttdef"><b>Definition:</b> <a href="a01551_source.html#l00117">stl_function.h:117</a></div></div>
<div class="ttc" id="a00714_html"><div class="ttname"><a href="a00714.html">std::equal_to</a></div><div class="ttdoc">One of the comparison functors. </div><div class="ttdef"><b>Definition:</b> <a href="a01551_source.html#l00204">stl_function.h:204</a></div></div>
<div class="ttc" id="a01721_html_ga1fa77600b0e213eaec448448f702ef40"><div class="ttname"><a href="a01721.html#ga1fa77600b0e213eaec448448f702ef40">std::not1</a></div><div class="ttdeci">unary_negate< _Predicate > not1(const _Predicate &__pred)</div><div class="ttdoc">One of the negation functors. </div><div class="ttdef"><b>Definition:</b> <a href="a01551_source.html#l00369">stl_function.h:369</a></div></div>
<div class="ttc" id="a00883_html"><div class="ttname"><a href="a00883.html">std::modulus</a></div><div class="ttdoc">One of the math functors. </div><div class="ttdef"><b>Definition:</b> <a href="a01551_source.html#l00176">stl_function.h:176</a></div></div>
<div class="ttc" id="a00858_html"><div class="ttname"><a href="a00858.html">std::less</a></div><div class="ttdoc">One of the comparison functors. </div><div class="ttdef"><b>Definition:</b> <a href="a01551_source.html#l00231">stl_function.h:231</a></div></div>
<div class="ttc" id="a00878_html"><div class="ttname"><a href="a00878.html">std::mem_fun_t</a></div><div class="ttdoc">One of the adaptors for member pointers. </div><div class="ttdef"><b>Definition:</b> <a href="a01551_source.html#l00542">stl_function.h:542</a></div></div>
<div class="ttc" id="a00866_html"><div class="ttname"><a href="a00866.html">std::logical_and</a></div><div class="ttdoc">One of the Boolean operations functors. </div><div class="ttdef"><b>Definition:</b> <a href="a01551_source.html#l00268">stl_function.h:268</a></div></div>
<div class="ttc" id="a00454_html"><div class="ttname"><a href="a00454.html">std::binary_function</a></div><div class="ttdef"><b>Definition:</b> <a href="a01551_source.html#l00114">stl_function.h:114</a></div></div>
<div class="ttc" id="a00937_html"><div class="ttname"><a href="a00937.html">std::plus</a></div><div class="ttdoc">One of the math functors. </div><div class="ttdef"><b>Definition:</b> <a href="a01551_source.html#l00140">stl_function.h:140</a></div></div>
<div class="ttc" id="a01722_html_gaee61fcee12458d9d61b10f07de908134"><div class="ttname"><a href="a01722.html#gaee61fcee12458d9d61b10f07de908134">std::ptr_fun</a></div><div class="ttdeci">pointer_to_unary_function< _Arg, _Result > ptr_fun(_Result(*__x)(_Arg))</div><div class="ttdoc">One of the adaptors for function pointers. </div><div class="ttdef"><b>Definition:</b> <a href="a01551_source.html#l00442">stl_function.h:442</a></div></div>
<div class="ttc" id="a00711_html"><div class="ttname"><a href="a00711.html">std::divides</a></div><div class="ttdoc">One of the math functors. </div><div class="ttdef"><b>Definition:</b> <a href="a01551_source.html#l00167">stl_function.h:167</a></div></div>
<div class="ttc" id="a01003_html_a6e96c92b2592035c938f85ab1da1c876"><div class="ttname"><a href="a01003.html#a6e96c92b2592035c938f85ab1da1c876">std::unary_function::argument_type</a></div><div class="ttdeci">_Arg argument_type</div><div class="ttdoc">argument_type is the type of the argument </div><div class="ttdef"><b>Definition:</b> <a href="a01551_source.html#l00104">stl_function.h:104</a></div></div>
<div class="ttc" id="a00454_html_aae0f69fe498930627177ff1f06d0ef9f"><div class="ttname"><a href="a00454.html#aae0f69fe498930627177ff1f06d0ef9f">std::binary_function::second_argument_type</a></div><div class="ttdeci">_Arg2 second_argument_type</div><div class="ttdoc">second_argument_type is the type of the second argument </div><div class="ttdef"><b>Definition:</b> <a href="a01551_source.html#l00120">stl_function.h:120</a></div></div>
<div class="ttc" id="a00877_html"><div class="ttname"><a href="a00877.html">std::mem_fun_ref_t</a></div><div class="ttdoc">One of the adaptors for member pointers. </div><div class="ttdef"><b>Definition:</b> <a href="a01551_source.html#l00578">stl_function.h:578</a></div></div>
<div class="ttc" id="a00894_html"><div class="ttname"><a href="a00894.html">std::negate</a></div><div class="ttdoc">One of the math functors. </div><div class="ttdef"><b>Definition:</b> <a href="a01551_source.html#l00185">stl_function.h:185</a></div></div>
<div class="ttc" id="a01057_html"><div class="ttname"><a href="a01057.html">binders.h</a></div></div>
<div class="ttc" id="a01003_html_a70d48de710aa15c5e811cbcf6c8bdd61"><div class="ttname"><a href="a01003.html#a70d48de710aa15c5e811cbcf6c8bdd61">std::unary_function::result_type</a></div><div class="ttdeci">_Result result_type</div><div class="ttdoc">result_type is the return type </div><div class="ttdef"><b>Definition:</b> <a href="a01551_source.html#l00107">stl_function.h:107</a></div></div>
<div class="ttc" id="a00692_html"><div class="ttname"><a href="a00692.html">std::const_mem_fun_ref_t</a></div><div class="ttdoc">One of the adaptors for member pointers. </div><div class="ttdef"><b>Definition:</b> <a href="a01551_source.html#l00596">stl_function.h:596</a></div></div>
<div class="ttc" id="a00736_html"><div class="ttname"><a href="a00736.html">std::greater_equal</a></div><div class="ttdoc">One of the comparison functors. </div><div class="ttdef"><b>Definition:</b> <a href="a01551_source.html#l00240">stl_function.h:240</a></div></div>
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