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<div class="title">for_each_selectors.h</div> </div>
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<a href="a00874.html">Go to the documentation of this file.</a><div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">// -*- C++ -*-</span>
<a name="l00002"></a>00002
<a name="l00003"></a>00003 <span class="comment">// Copyright (C) 2007, 2008, 2009 Free Software Foundation, Inc.</span>
<a name="l00004"></a>00004 <span class="comment">//</span>
<a name="l00005"></a>00005 <span class="comment">// This file is part of the GNU ISO C++ Library. This library is free</span>
<a name="l00006"></a>00006 <span class="comment">// software; you can redistribute it and/or modify it under the terms</span>
<a name="l00007"></a>00007 <span class="comment">// of the GNU General Public License as published by the Free Software</span>
<a name="l00008"></a>00008 <span class="comment">// Foundation; either version 3, or (at your option) any later</span>
<a name="l00009"></a>00009 <span class="comment">// version.</span>
<a name="l00010"></a>00010
<a name="l00011"></a>00011 <span class="comment">// This library is distributed in the hope that it will be useful, but</span>
<a name="l00012"></a>00012 <span class="comment">// WITHOUT ANY WARRANTY; without even the implied warranty of</span>
<a name="l00013"></a>00013 <span class="comment">// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU</span>
<a name="l00014"></a>00014 <span class="comment">// General Public License for more details.</span>
<a name="l00015"></a>00015
<a name="l00016"></a>00016 <span class="comment">// Under Section 7 of GPL version 3, you are granted additional</span>
<a name="l00017"></a>00017 <span class="comment">// permissions described in the GCC Runtime Library Exception, version</span>
<a name="l00018"></a>00018 <span class="comment">// 3.1, as published by the Free Software Foundation.</span>
<a name="l00019"></a>00019
<a name="l00020"></a>00020 <span class="comment">// You should have received a copy of the GNU General Public License and</span>
<a name="l00021"></a>00021 <span class="comment">// a copy of the GCC Runtime Library Exception along with this program;</span>
<a name="l00022"></a>00022 <span class="comment">// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see</span>
<a name="l00023"></a>00023 <span class="comment">// <http://www.gnu.org/licenses/>.</span>
<a name="l00024"></a>00024 <span class="comment"></span>
<a name="l00025"></a>00025 <span class="comment">/** @file parallel/for_each_selectors.h</span>
<a name="l00026"></a>00026 <span class="comment"> * @brief Functors representing different tasks to be plugged into the</span>
<a name="l00027"></a>00027 <span class="comment"> * generic parallelization methods for embarrassingly parallel functions.</span>
<a name="l00028"></a>00028 <span class="comment"> * This file is a GNU parallel extension to the Standard C++ Library.</span>
<a name="l00029"></a>00029 <span class="comment"> */</span>
<a name="l00030"></a>00030
<a name="l00031"></a>00031 <span class="comment">// Written by Felix Putze.</span>
<a name="l00032"></a>00032
<a name="l00033"></a>00033 <span class="preprocessor">#ifndef _GLIBCXX_PARALLEL_FOR_EACH_SELECTORS_H</span>
<a name="l00034"></a>00034 <span class="preprocessor"></span><span class="preprocessor">#define _GLIBCXX_PARALLEL_FOR_EACH_SELECTORS_H 1</span>
<a name="l00035"></a>00035 <span class="preprocessor"></span>
<a name="l00036"></a>00036 <span class="preprocessor">#include <<a class="code" href="a00769.html" title="Includes the original header files concerned with iterators except for stream iterators. This file is a GNU parallel extension to the Standard C++ Library.">parallel/basic_iterator.h</a>></span>
<a name="l00037"></a>00037
<a name="l00038"></a>00038 <span class="keyword">namespace </span>__gnu_parallel
<a name="l00039"></a>00039 {<span class="comment"></span>
<a name="l00040"></a>00040 <span class="comment"> /** @brief Generic __selector for embarrassingly parallel functions. */</span>
<a name="l00041"></a>00041 <span class="keyword">template</span><<span class="keyword">typename</span> _It>
<a name="l00042"></a><a class="code" href="a00102.html">00042</a> <span class="keyword">struct </span><a class="code" href="a00102.html" title="Generic __selector for embarrassingly parallel functions.">__generic_for_each_selector</a>
<a name="l00043"></a>00043 {<span class="comment"></span>
<a name="l00044"></a>00044 <span class="comment"> /** @brief _Iterator on last element processed; needed for some</span>
<a name="l00045"></a>00045 <span class="comment"> * algorithms (e. g. std::transform()).</span>
<a name="l00046"></a>00046 <span class="comment"> */</span>
<a name="l00047"></a><a class="code" href="a00102.html#a3b43c6fa8f1aa9bf6a3506102d0755c9">00047</a> _It <a class="code" href="a00102.html#a3b43c6fa8f1aa9bf6a3506102d0755c9" title="_Iterator on last element processed; needed for some algorithms (e. g. std::transform()).">_M_finish_iterator</a>;
<a name="l00048"></a>00048 };
<a name="l00049"></a>00049 <span class="comment"></span>
<a name="l00050"></a>00050 <span class="comment"> /** @brief std::for_each() selector. */</span>
<a name="l00051"></a>00051 <span class="keyword">template</span><<span class="keyword">typename</span> _It>
<a name="l00052"></a><a class="code" href="a00099.html">00052</a> <span class="keyword">struct </span><a class="code" href="a00099.html" title="std::for_each() selector.">__for_each_selector</a> : <span class="keyword">public</span> <a class="code" href="a00102.html" title="Generic __selector for embarrassingly parallel functions.">__generic_for_each_selector</a><_It>
<a name="l00053"></a>00053 {<span class="comment"></span>
<a name="l00054"></a>00054 <span class="comment"> /** @brief Functor execution.</span>
<a name="l00055"></a>00055 <span class="comment"> * @param __o Operator.</span>
<a name="l00056"></a>00056 <span class="comment"> * @param __i iterator referencing object. */</span>
<a name="l00057"></a>00057 <span class="keyword">template</span><<span class="keyword">typename</span> _Op>
<a name="l00058"></a>00058 <span class="keywordtype">bool</span>
<a name="l00059"></a><a class="code" href="a00099.html#a5b3cf68df1bab0addb6a0af821b464bc">00059</a> <a class="code" href="a00099.html#a5b3cf68df1bab0addb6a0af821b464bc" title="Functor execution.">operator()</a>(_Op& __o, _It __i)
<a name="l00060"></a>00060 {
<a name="l00061"></a>00061 __o(*__i);
<a name="l00062"></a>00062 <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00063"></a>00063 }
<a name="l00064"></a>00064 };
<a name="l00065"></a>00065 <span class="comment"></span>
<a name="l00066"></a>00066 <span class="comment"> /** @brief std::generate() selector. */</span>
<a name="l00067"></a>00067 <span class="keyword">template</span><<span class="keyword">typename</span> _It>
<a name="l00068"></a><a class="code" href="a00100.html">00068</a> <span class="keyword">struct </span><a class="code" href="a00100.html" title="std::generate() selector.">__generate_selector</a> : <span class="keyword">public</span> <a class="code" href="a00102.html" title="Generic __selector for embarrassingly parallel functions.">__generic_for_each_selector</a><_It>
<a name="l00069"></a>00069 {<span class="comment"></span>
<a name="l00070"></a>00070 <span class="comment"> /** @brief Functor execution.</span>
<a name="l00071"></a>00071 <span class="comment"> * @param __o Operator.</span>
<a name="l00072"></a>00072 <span class="comment"> * @param __i iterator referencing object. */</span>
<a name="l00073"></a>00073 <span class="keyword">template</span><<span class="keyword">typename</span> _Op>
<a name="l00074"></a>00074 <span class="keywordtype">bool</span>
<a name="l00075"></a><a class="code" href="a00100.html#ad85482929ce286ff3595b95d0893a251">00075</a> <a class="code" href="a00100.html#ad85482929ce286ff3595b95d0893a251" title="Functor execution.">operator()</a>(_Op& __o, _It __i)
<a name="l00076"></a>00076 {
<a name="l00077"></a>00077 *__i = __o();
<a name="l00078"></a>00078 <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00079"></a>00079 }
<a name="l00080"></a>00080 };
<a name="l00081"></a>00081 <span class="comment"></span>
<a name="l00082"></a>00082 <span class="comment"> /** @brief std::fill() selector. */</span>
<a name="l00083"></a>00083 <span class="keyword">template</span><<span class="keyword">typename</span> _It>
<a name="l00084"></a><a class="code" href="a00096.html">00084</a> <span class="keyword">struct </span><a class="code" href="a00096.html" title="std::fill() selector.">__fill_selector</a> : <span class="keyword">public</span> <a class="code" href="a00102.html" title="Generic __selector for embarrassingly parallel functions.">__generic_for_each_selector</a><_It>
<a name="l00085"></a>00085 {<span class="comment"></span>
<a name="l00086"></a>00086 <span class="comment"> /** @brief Functor execution.</span>
<a name="l00087"></a>00087 <span class="comment"> * @param __v Current value.</span>
<a name="l00088"></a>00088 <span class="comment"> * @param __i iterator referencing object. */</span>
<a name="l00089"></a>00089 <span class="keyword">template</span><<span class="keyword">typename</span> _ValueType>
<a name="l00090"></a>00090 <span class="keywordtype">bool</span>
<a name="l00091"></a><a class="code" href="a00096.html#a8359efaf0c9d9f7e27fda5d0d27d69a1">00091</a> <a class="code" href="a00096.html#a8359efaf0c9d9f7e27fda5d0d27d69a1" title="Functor execution.">operator()</a>(_ValueType& __v, _It __i)
<a name="l00092"></a>00092 {
<a name="l00093"></a>00093 *__i = __v;
<a name="l00094"></a>00094 <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00095"></a>00095 }
<a name="l00096"></a>00096 };
<a name="l00097"></a>00097 <span class="comment"></span>
<a name="l00098"></a>00098 <span class="comment"> /** @brief std::transform() __selector, one input sequence variant. */</span>
<a name="l00099"></a>00099 <span class="keyword">template</span><<span class="keyword">typename</span> _It>
<a name="l00100"></a><a class="code" href="a00116.html">00100</a> <span class="keyword">struct </span><a class="code" href="a00116.html" title="std::transform() __selector, one input sequence variant.">__transform1_selector</a> : <span class="keyword">public</span> <a class="code" href="a00102.html" title="Generic __selector for embarrassingly parallel functions.">__generic_for_each_selector</a><_It>
<a name="l00101"></a>00101 {<span class="comment"></span>
<a name="l00102"></a>00102 <span class="comment"> /** @brief Functor execution.</span>
<a name="l00103"></a>00103 <span class="comment"> * @param __o Operator.</span>
<a name="l00104"></a>00104 <span class="comment"> * @param __i iterator referencing object. */</span>
<a name="l00105"></a>00105 <span class="keyword">template</span><<span class="keyword">typename</span> _Op>
<a name="l00106"></a>00106 <span class="keywordtype">bool</span>
<a name="l00107"></a><a class="code" href="a00116.html#a0e1e5d498571d9d36d535058a4ffef79">00107</a> <a class="code" href="a00116.html#a0e1e5d498571d9d36d535058a4ffef79" title="Functor execution.">operator()</a>(_Op& __o, _It __i)
<a name="l00108"></a>00108 {
<a name="l00109"></a>00109 *__i.second = __o(*__i.first);
<a name="l00110"></a>00110 <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00111"></a>00111 }
<a name="l00112"></a>00112 };
<a name="l00113"></a>00113 <span class="comment"></span>
<a name="l00114"></a>00114 <span class="comment"> /** @brief std::transform() __selector, two input sequences variant. */</span>
<a name="l00115"></a>00115 <span class="keyword">template</span><<span class="keyword">typename</span> _It>
<a name="l00116"></a><a class="code" href="a00117.html">00116</a> <span class="keyword">struct </span><a class="code" href="a00117.html" title="std::transform() __selector, two input sequences variant.">__transform2_selector</a> : <span class="keyword">public</span> <a class="code" href="a00102.html" title="Generic __selector for embarrassingly parallel functions.">__generic_for_each_selector</a><_It>
<a name="l00117"></a>00117 {<span class="comment"></span>
<a name="l00118"></a>00118 <span class="comment"> /** @brief Functor execution.</span>
<a name="l00119"></a>00119 <span class="comment"> * @param __o Operator.</span>
<a name="l00120"></a>00120 <span class="comment"> * @param __i iterator referencing object. */</span>
<a name="l00121"></a>00121 <span class="keyword">template</span><<span class="keyword">typename</span> _Op>
<a name="l00122"></a>00122 <span class="keywordtype">bool</span>
<a name="l00123"></a><a class="code" href="a00117.html#afb99245c4fb8e815887d6072ebf77977">00123</a> <a class="code" href="a00117.html#afb99245c4fb8e815887d6072ebf77977" title="Functor execution.">operator()</a>(_Op& __o, _It __i)
<a name="l00124"></a>00124 {
<a name="l00125"></a>00125 *__i._M_third = __o(*__i._M_first, *__i._M_second);
<a name="l00126"></a>00126 <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00127"></a>00127 }
<a name="l00128"></a>00128 };
<a name="l00129"></a>00129 <span class="comment"></span>
<a name="l00130"></a>00130 <span class="comment"> /** @brief std::replace() selector. */</span>
<a name="l00131"></a>00131 <span class="keyword">template</span><<span class="keyword">typename</span> _It, <span class="keyword">typename</span> _Tp>
<a name="l00132"></a><a class="code" href="a00115.html">00132</a> <span class="keyword">struct </span><a class="code" href="a00115.html" title="std::replace() selector.">__replace_selector</a> : <span class="keyword">public</span> <a class="code" href="a00102.html" title="Generic __selector for embarrassingly parallel functions.">__generic_for_each_selector</a><_It>
<a name="l00133"></a>00133 {<span class="comment"></span>
<a name="l00134"></a>00134 <span class="comment"> /** @brief Value to replace with. */</span>
<a name="l00135"></a><a class="code" href="a00115.html#a64e384e0d3c57b0f0a545f56262fa012">00135</a> <span class="keyword">const</span> _Tp& <a class="code" href="a00115.html#a64e384e0d3c57b0f0a545f56262fa012" title="Value to replace with.">__new_val</a>;
<a name="l00136"></a>00136 <span class="comment"></span>
<a name="l00137"></a>00137 <span class="comment"> /** @brief Constructor</span>
<a name="l00138"></a>00138 <span class="comment"> * @param __new_val Value to replace with. */</span>
<a name="l00139"></a>00139 <span class="keyword">explicit</span>
<a name="l00140"></a><a class="code" href="a00115.html#a0fc622ae3902dd1b6c81541545262db7">00140</a> <a class="code" href="a00115.html#a0fc622ae3902dd1b6c81541545262db7" title="Constructor.">__replace_selector</a>(<span class="keyword">const</span> _Tp &<a class="code" href="a00115.html#a64e384e0d3c57b0f0a545f56262fa012" title="Value to replace with.">__new_val</a>) : __new_val(__new_val) {}
<a name="l00141"></a>00141 <span class="comment"></span>
<a name="l00142"></a>00142 <span class="comment"> /** @brief Functor execution.</span>
<a name="l00143"></a>00143 <span class="comment"> * @param __v Current value.</span>
<a name="l00144"></a>00144 <span class="comment"> * @param __i iterator referencing object. */</span>
<a name="l00145"></a>00145 <span class="keywordtype">bool</span>
<a name="l00146"></a><a class="code" href="a00115.html#af3f1faaa44808a57f241b03a0f9be9a5">00146</a> <a class="code" href="a00115.html#af3f1faaa44808a57f241b03a0f9be9a5" title="Functor execution.">operator()</a>(_Tp& __v, _It __i)
<a name="l00147"></a>00147 {
<a name="l00148"></a>00148 <span class="keywordflow">if</span> (*__i == __v)
<a name="l00149"></a>00149 *__i = <a class="code" href="a00115.html#a64e384e0d3c57b0f0a545f56262fa012" title="Value to replace with.">__new_val</a>;
<a name="l00150"></a>00150 <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00151"></a>00151 }
<a name="l00152"></a>00152 };
<a name="l00153"></a>00153 <span class="comment"></span>
<a name="l00154"></a>00154 <span class="comment"> /** @brief std::replace() selector. */</span>
<a name="l00155"></a>00155 <span class="keyword">template</span><<span class="keyword">typename</span> _It, <span class="keyword">typename</span> _Op, <span class="keyword">typename</span> _Tp>
<a name="l00156"></a><a class="code" href="a00114.html">00156</a> <span class="keyword">struct </span><a class="code" href="a00114.html" title="std::replace() selector.">__replace_if_selector</a> : <span class="keyword">public</span> <a class="code" href="a00102.html" title="Generic __selector for embarrassingly parallel functions.">__generic_for_each_selector</a><_It>
<a name="l00157"></a>00157 {<span class="comment"></span>
<a name="l00158"></a>00158 <span class="comment"> /** @brief Value to replace with. */</span>
<a name="l00159"></a><a class="code" href="a00114.html#ae1c51abc88821f95a5cb95ae9736d021">00159</a> <span class="keyword">const</span> _Tp& <a class="code" href="a00114.html#ae1c51abc88821f95a5cb95ae9736d021" title="Value to replace with.">__new_val</a>;
<a name="l00160"></a>00160 <span class="comment"></span>
<a name="l00161"></a>00161 <span class="comment"> /** @brief Constructor.</span>
<a name="l00162"></a>00162 <span class="comment"> * @param __new_val Value to replace with. */</span>
<a name="l00163"></a>00163 <span class="keyword">explicit</span>
<a name="l00164"></a><a class="code" href="a00114.html#adbc9d0217ad343205522064b78116f27">00164</a> <a class="code" href="a00114.html#adbc9d0217ad343205522064b78116f27" title="Constructor.">__replace_if_selector</a>(<span class="keyword">const</span> _Tp &<a class="code" href="a00114.html#ae1c51abc88821f95a5cb95ae9736d021" title="Value to replace with.">__new_val</a>) : __new_val(__new_val) { }
<a name="l00165"></a>00165 <span class="comment"></span>
<a name="l00166"></a>00166 <span class="comment"> /** @brief Functor execution.</span>
<a name="l00167"></a>00167 <span class="comment"> * @param __o Operator.</span>
<a name="l00168"></a>00168 <span class="comment"> * @param __i iterator referencing object. */</span>
<a name="l00169"></a>00169 <span class="keywordtype">bool</span>
<a name="l00170"></a><a class="code" href="a00114.html#aac84e11aceb0e9a3a784639d4df228c3">00170</a> <a class="code" href="a00114.html#aac84e11aceb0e9a3a784639d4df228c3" title="Functor execution.">operator()</a>(_Op& __o, _It __i)
<a name="l00171"></a>00171 {
<a name="l00172"></a>00172 <span class="keywordflow">if</span> (__o(*__i))
<a name="l00173"></a>00173 *__i = <a class="code" href="a00114.html#ae1c51abc88821f95a5cb95ae9736d021" title="Value to replace with.">__new_val</a>;
<a name="l00174"></a>00174 <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00175"></a>00175 }
<a name="l00176"></a>00176 };
<a name="l00177"></a>00177 <span class="comment"></span>
<a name="l00178"></a>00178 <span class="comment"> /** @brief std::count() selector. */</span>
<a name="l00179"></a>00179 <span class="keyword">template</span><<span class="keyword">typename</span> _It, <span class="keyword">typename</span> _Diff>
<a name="l00180"></a><a class="code" href="a00095.html">00180</a> <span class="keyword">struct </span><a class="code" href="a00095.html" title="std::count() selector.">__count_selector</a> : <span class="keyword">public</span> <a class="code" href="a00102.html" title="Generic __selector for embarrassingly parallel functions.">__generic_for_each_selector</a><_It>
<a name="l00181"></a>00181 {<span class="comment"></span>
<a name="l00182"></a>00182 <span class="comment"> /** @brief Functor execution.</span>
<a name="l00183"></a>00183 <span class="comment"> * @param __v Current value.</span>
<a name="l00184"></a>00184 <span class="comment"> * @param __i iterator referencing object.</span>
<a name="l00185"></a>00185 <span class="comment"> * @return 1 if count, 0 if does not count. */</span>
<a name="l00186"></a>00186 <span class="keyword">template</span><<span class="keyword">typename</span> _ValueType>
<a name="l00187"></a>00187 _Diff
<a name="l00188"></a><a class="code" href="a00095.html#a7ac7d6452f162c25b7a0fa3f2ca02611">00188</a> <a class="code" href="a00095.html#a7ac7d6452f162c25b7a0fa3f2ca02611" title="Functor execution.">operator()</a>(_ValueType& __v, _It __i)
<a name="l00189"></a>00189 { <span class="keywordflow">return</span> (__v == *__i) ? 1 : 0; }
<a name="l00190"></a>00190 };
<a name="l00191"></a>00191 <span class="comment"></span>
<a name="l00192"></a>00192 <span class="comment"> /** @brief std::count_if () selector. */</span>
<a name="l00193"></a>00193 <span class="keyword">template</span><<span class="keyword">typename</span> _It, <span class="keyword">typename</span> _Diff>
<a name="l00194"></a><a class="code" href="a00094.html">00194</a> <span class="keyword">struct </span><a class="code" href="a00094.html" title="std::count_if () selector.">__count_if_selector</a> : <span class="keyword">public</span> <a class="code" href="a00102.html" title="Generic __selector for embarrassingly parallel functions.">__generic_for_each_selector</a><_It>
<a name="l00195"></a>00195 {<span class="comment"></span>
<a name="l00196"></a>00196 <span class="comment"> /** @brief Functor execution.</span>
<a name="l00197"></a>00197 <span class="comment"> * @param __o Operator.</span>
<a name="l00198"></a>00198 <span class="comment"> * @param __i iterator referencing object.</span>
<a name="l00199"></a>00199 <span class="comment"> * @return 1 if count, 0 if does not count. */</span>
<a name="l00200"></a>00200 <span class="keyword">template</span><<span class="keyword">typename</span> _Op>
<a name="l00201"></a>00201 _Diff
<a name="l00202"></a><a class="code" href="a00094.html#ac21065136c15aa96c280772ff467eefb">00202</a> <a class="code" href="a00094.html#ac21065136c15aa96c280772ff467eefb" title="Functor execution.">operator()</a>(_Op& __o, _It __i)
<a name="l00203"></a>00203 { <span class="keywordflow">return</span> (__o(*__i)) ? 1 : 0; }
<a name="l00204"></a>00204 };
<a name="l00205"></a>00205 <span class="comment"></span>
<a name="l00206"></a>00206 <span class="comment"> /** @brief std::accumulate() selector. */</span>
<a name="l00207"></a>00207 <span class="keyword">template</span><<span class="keyword">typename</span> _It>
<a name="l00208"></a><a class="code" href="a00089.html">00208</a> <span class="keyword">struct </span><a class="code" href="a00089.html" title="std::accumulate() selector.">__accumulate_selector</a> : <span class="keyword">public</span> <a class="code" href="a00102.html" title="Generic __selector for embarrassingly parallel functions.">__generic_for_each_selector</a><_It>
<a name="l00209"></a>00209 {<span class="comment"></span>
<a name="l00210"></a>00210 <span class="comment"> /** @brief Functor execution.</span>
<a name="l00211"></a>00211 <span class="comment"> * @param __o Operator (unused).</span>
<a name="l00212"></a>00212 <span class="comment"> * @param __i iterator referencing object.</span>
<a name="l00213"></a>00213 <span class="comment"> * @return The current value. */</span>
<a name="l00214"></a>00214 <span class="keyword">template</span><<span class="keyword">typename</span> _Op>
<a name="l00215"></a>00215 <span class="keyword">typename</span> std::iterator_traits<_It>::value_type
<a name="l00216"></a><a class="code" href="a00089.html#ae5ae6d0c1f672682a6879dc86c18728a">00216</a> <a class="code" href="a00089.html#ae5ae6d0c1f672682a6879dc86c18728a" title="Functor execution.">operator()</a>(_Op __o, _It __i)
<a name="l00217"></a>00217 { <span class="keywordflow">return</span> *__i; }
<a name="l00218"></a>00218 };
<a name="l00219"></a>00219 <span class="comment"></span>
<a name="l00220"></a>00220 <span class="comment"> /** @brief std::inner_product() selector. */</span>
<a name="l00221"></a>00221 <span class="keyword">template</span><<span class="keyword">typename</span> _It, <span class="keyword">typename</span> _It2, <span class="keyword">typename</span> _Tp>
<a name="l00222"></a><a class="code" href="a00104.html">00222</a> <span class="keyword">struct </span><a class="code" href="a00104.html" title="std::inner_product() selector.">__inner_product_selector</a> : <span class="keyword">public</span> <a class="code" href="a00102.html" title="Generic __selector for embarrassingly parallel functions.">__generic_for_each_selector</a><_It>
<a name="l00223"></a>00223 {<span class="comment"></span>
<a name="l00224"></a>00224 <span class="comment"> /** @brief Begin iterator of first sequence. */</span>
<a name="l00225"></a><a class="code" href="a00104.html#a41d6aec1a243a4cd10c8beca20d3de75">00225</a> _It <a class="code" href="a00104.html#a41d6aec1a243a4cd10c8beca20d3de75" title="Begin iterator of first sequence.">__begin1_iterator</a>;
<a name="l00226"></a>00226 <span class="comment"></span>
<a name="l00227"></a>00227 <span class="comment"> /** @brief Begin iterator of second sequence. */</span>
<a name="l00228"></a><a class="code" href="a00104.html#a11bb81ff8c7ccd4d5e4437e606e138bc">00228</a> _It2 <a class="code" href="a00104.html#a11bb81ff8c7ccd4d5e4437e606e138bc" title="Begin iterator of second sequence.">__begin2_iterator</a>;
<a name="l00229"></a>00229 <span class="comment"></span>
<a name="l00230"></a>00230 <span class="comment"> /** @brief Constructor.</span>
<a name="l00231"></a>00231 <span class="comment"> * @param b1 Begin iterator of first sequence.</span>
<a name="l00232"></a>00232 <span class="comment"> * @param b2 Begin iterator of second sequence. */</span>
<a name="l00233"></a>00233 <span class="keyword">explicit</span>
<a name="l00234"></a><a class="code" href="a00104.html#a25f2715c4f3a97fc90884d9eaa458a71">00234</a> <a class="code" href="a00104.html#a25f2715c4f3a97fc90884d9eaa458a71" title="Constructor.">__inner_product_selector</a>(_It __b1, _It2 __b2)
<a name="l00235"></a>00235 : <a class="code" href="a00104.html#a41d6aec1a243a4cd10c8beca20d3de75" title="Begin iterator of first sequence.">__begin1_iterator</a>(__b1), <a class="code" href="a00104.html#a11bb81ff8c7ccd4d5e4437e606e138bc" title="Begin iterator of second sequence.">__begin2_iterator</a>(__b2) { }
<a name="l00236"></a>00236 <span class="comment"></span>
<a name="l00237"></a>00237 <span class="comment"> /** @brief Functor execution.</span>
<a name="l00238"></a>00238 <span class="comment"> * @param __mult Multiplication functor.</span>
<a name="l00239"></a>00239 <span class="comment"> * @param __current iterator referencing object.</span>
<a name="l00240"></a>00240 <span class="comment"> * @return Inner product elemental __result. */</span>
<a name="l00241"></a>00241 <span class="keyword">template</span><<span class="keyword">typename</span> _Op>
<a name="l00242"></a>00242 _Tp
<a name="l00243"></a><a class="code" href="a00104.html#af504ee7eb7a0fb965652a879632ffef7">00243</a> <a class="code" href="a00104.html#af504ee7eb7a0fb965652a879632ffef7" title="Functor execution.">operator()</a>(_Op __mult, _It __current)
<a name="l00244"></a>00244 {
<a name="l00245"></a>00245 <span class="keyword">typename</span> std::iterator_traits<_It>::difference_type __position
<a name="l00246"></a>00246 = __current - <a class="code" href="a00104.html#a41d6aec1a243a4cd10c8beca20d3de75" title="Begin iterator of first sequence.">__begin1_iterator</a>;
<a name="l00247"></a>00247 <span class="keywordflow">return</span> __mult(*__current, *(<a class="code" href="a00104.html#a11bb81ff8c7ccd4d5e4437e606e138bc" title="Begin iterator of second sequence.">__begin2_iterator</a> + __position));
<a name="l00248"></a>00248 }
<a name="l00249"></a>00249 };
<a name="l00250"></a>00250 <span class="comment"></span>
<a name="l00251"></a>00251 <span class="comment"> /** @brief Selector that just returns the passed iterator. */</span>
<a name="l00252"></a>00252 <span class="keyword">template</span><<span class="keyword">typename</span> _It>
<a name="l00253"></a><a class="code" href="a00103.html">00253</a> <span class="keyword">struct </span><a class="code" href="a00103.html" title="Selector that just returns the passed iterator.">__identity_selector</a> : <span class="keyword">public</span> <a class="code" href="a00102.html" title="Generic __selector for embarrassingly parallel functions.">__generic_for_each_selector</a><_It>
<a name="l00254"></a>00254 {<span class="comment"></span>
<a name="l00255"></a>00255 <span class="comment"> /** @brief Functor execution.</span>
<a name="l00256"></a>00256 <span class="comment"> * @param __o Operator (unused).</span>
<a name="l00257"></a>00257 <span class="comment"> * @param __i iterator referencing object.</span>
<a name="l00258"></a>00258 <span class="comment"> * @return Passed iterator. */</span>
<a name="l00259"></a>00259 <span class="keyword">template</span><<span class="keyword">typename</span> _Op>
<a name="l00260"></a>00260 _It
<a name="l00261"></a><a class="code" href="a00103.html#ae09b1d32784fcb1be06da8b454b7dcb7">00261</a> <a class="code" href="a00103.html#ae09b1d32784fcb1be06da8b454b7dcb7" title="Functor execution.">operator()</a>(_Op __o, _It __i)
<a name="l00262"></a>00262 { <span class="keywordflow">return</span> __i; }
<a name="l00263"></a>00263 };
<a name="l00264"></a>00264 <span class="comment"></span>
<a name="l00265"></a>00265 <span class="comment"> /** @brief Selector that returns the difference between two adjacent</span>
<a name="l00266"></a>00266 <span class="comment"> * __elements.</span>
<a name="l00267"></a>00267 <span class="comment"> */</span>
<a name="l00268"></a>00268 <span class="keyword">template</span><<span class="keyword">typename</span> _It>
<a name="l00269"></a><a class="code" href="a00090.html">00269</a> <span class="keyword">struct </span><a class="code" href="a00090.html" title="Selector that returns the difference between two adjacent __elements.">__adjacent_difference_selector</a>
<a name="l00270"></a>00270 : <span class="keyword">public</span> <a class="code" href="a00102.html" title="Generic __selector for embarrassingly parallel functions.">__generic_for_each_selector</a><_It>
<a name="l00271"></a>00271 {
<a name="l00272"></a>00272 <span class="keyword">template</span><<span class="keyword">typename</span> _Op>
<a name="l00273"></a>00273 <span class="keywordtype">bool</span>
<a name="l00274"></a>00274 operator()(_Op& __o, _It __i)
<a name="l00275"></a>00275 {
<a name="l00276"></a>00276 <span class="keyword">typename</span> _It::first_type __go_back_one = __i.first;
<a name="l00277"></a>00277 --__go_back_one;
<a name="l00278"></a>00278 *__i.second = __o(*__i.first, *__go_back_one);
<a name="l00279"></a>00279 <span class="keywordflow">return</span> <span class="keyword">true</span>;
<a name="l00280"></a>00280 }
<a name="l00281"></a>00281 };
<a name="l00282"></a>00282 <span class="comment"></span>
<a name="l00283"></a>00283 <span class="comment"> /** @brief Functor doing nothing</span>
<a name="l00284"></a>00284 <span class="comment"> *</span>
<a name="l00285"></a>00285 <span class="comment"> * For some __reduction tasks (this is not a function object, but is</span>
<a name="l00286"></a>00286 <span class="comment"> * passed as __selector __dummy parameter.</span>
<a name="l00287"></a>00287 <span class="comment"> */</span>
<a name="l00288"></a><a class="code" href="a00147.html">00288</a> <span class="keyword">struct </span><a class="code" href="a00147.html" title="Functor doing nothing.">_Nothing</a>
<a name="l00289"></a>00289 {<span class="comment"></span>
<a name="l00290"></a>00290 <span class="comment"> /** @brief Functor execution.</span>
<a name="l00291"></a>00291 <span class="comment"> * @param __i iterator referencing object. */</span>
<a name="l00292"></a>00292 <span class="keyword">template</span><<span class="keyword">typename</span> _It>
<a name="l00293"></a>00293 <span class="keywordtype">void</span>
<a name="l00294"></a><a class="code" href="a00147.html#a4b7c4c3d81fd505badcfc102f43c2a6d">00294</a> <a class="code" href="a00147.html#a4b7c4c3d81fd505badcfc102f43c2a6d" title="Functor execution.">operator()</a>(_It) { }
<a name="l00295"></a>00295 };
<a name="l00296"></a>00296 <span class="comment"></span>
<a name="l00297"></a>00297 <span class="comment"> /** @brief Reduction function doing nothing. */</span>
<a name="l00298"></a><a class="code" href="a00121.html">00298</a> <span class="keyword">struct </span><a class="code" href="a00121.html" title="Reduction function doing nothing.">_DummyReduct</a>
<a name="l00299"></a>00299 {
<a name="l00300"></a>00300 <span class="keywordtype">bool</span>
<a name="l00301"></a>00301 operator()(<span class="keywordtype">bool</span>, <span class="keywordtype">bool</span>)<span class="keyword"> const</span>
<a name="l00302"></a>00302 <span class="keyword"> </span>{ <span class="keywordflow">return</span> <span class="keyword">true</span>; }
<a name="l00303"></a>00303 };
<a name="l00304"></a>00304 <span class="comment"></span>
<a name="l00305"></a>00305 <span class="comment"> /** @brief Reduction for finding the maximum element, using a comparator. */</span>
<a name="l00306"></a>00306 <span class="keyword">template</span><<span class="keyword">typename</span> _Compare, <span class="keyword">typename</span> _It>
<a name="l00307"></a><a class="code" href="a00106.html">00307</a> <span class="keyword">struct </span><a class="code" href="a00106.html" title="Reduction for finding the maximum element, using a comparator.">__min_element_reduct</a>
<a name="l00308"></a>00308 {
<a name="l00309"></a>00309 _Compare& __comp;
<a name="l00310"></a>00310
<a name="l00311"></a>00311 <span class="keyword">explicit</span>
<a name="l00312"></a>00312 <a class="code" href="a00106.html" title="Reduction for finding the maximum element, using a comparator.">__min_element_reduct</a>(_Compare &__c) : __comp(__c) { }
<a name="l00313"></a>00313
<a name="l00314"></a>00314 _It
<a name="l00315"></a>00315 operator()(_It __x, _It __y)
<a name="l00316"></a>00316 { <span class="keywordflow">return</span> (__comp(*__x, *__y)) ? __x : __y; }
<a name="l00317"></a>00317 };
<a name="l00318"></a>00318 <span class="comment"></span>
<a name="l00319"></a>00319 <span class="comment"> /** @brief Reduction for finding the maximum element, using a comparator. */</span>
<a name="l00320"></a>00320 <span class="keyword">template</span><<span class="keyword">typename</span> _Compare, <span class="keyword">typename</span> _It>
<a name="l00321"></a><a class="code" href="a00105.html">00321</a> <span class="keyword">struct </span><a class="code" href="a00105.html" title="Reduction for finding the maximum element, using a comparator.">__max_element_reduct</a>
<a name="l00322"></a>00322 {
<a name="l00323"></a>00323 _Compare& __comp;
<a name="l00324"></a>00324
<a name="l00325"></a>00325 <span class="keyword">explicit</span>
<a name="l00326"></a>00326 <a class="code" href="a00105.html" title="Reduction for finding the maximum element, using a comparator.">__max_element_reduct</a>(_Compare& __c) : __comp(__c) { }
<a name="l00327"></a>00327
<a name="l00328"></a>00328 _It
<a name="l00329"></a>00329 operator()(_It __x, _It __y)
<a name="l00330"></a>00330 { <span class="keywordflow">return</span> (__comp(*__x, *__y)) ? __y : __x; }
<a name="l00331"></a>00331 };
<a name="l00332"></a>00332 <span class="comment"></span>
<a name="l00333"></a>00333 <span class="comment"> /** @brief General reduction, using a binary operator. */</span>
<a name="l00334"></a>00334 <span class="keyword">template</span><<span class="keyword">typename</span> _BinOp>
<a name="l00335"></a><a class="code" href="a00088.html">00335</a> <span class="keyword">struct </span><a class="code" href="a00088.html" title="General reduction, using a binary operator.">__accumulate_binop_reduct</a>
<a name="l00336"></a>00336 {
<a name="l00337"></a>00337 _BinOp& __binop;
<a name="l00338"></a>00338
<a name="l00339"></a>00339 <span class="keyword">explicit</span>
<a name="l00340"></a>00340 <a class="code" href="a00088.html" title="General reduction, using a binary operator.">__accumulate_binop_reduct</a>(_BinOp& __b) : __binop(__b) { }
<a name="l00341"></a>00341
<a name="l00342"></a>00342 <span class="keyword">template</span><<span class="keyword">typename</span> _Result, <span class="keyword">typename</span> _Addend>
<a name="l00343"></a>00343 _Result
<a name="l00344"></a>00344 operator()(<span class="keyword">const</span> _Result& __x, <span class="keyword">const</span> _Addend& __y)
<a name="l00345"></a>00345 { <span class="keywordflow">return</span> __binop(__x, __y); }
<a name="l00346"></a>00346 };
<a name="l00347"></a>00347 }
<a name="l00348"></a>00348
<a name="l00349"></a>00349 <span class="preprocessor">#endif </span><span class="comment">/* _GLIBCXX_PARALLEL_FOR_EACH_SELECTORS_H */</span>
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