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<hr><h1>compute.h</h1><div class="fragment"><pre>00001 <font class="comment">//</font>
00002 <font class="comment">// compute.h</font>
00003 <font class="comment">//</font>
00004 <font class="comment">// Copyright (C) 1996 Limit Point Systems, Inc.</font>
00005 <font class="comment">//</font>
00006 <font class="comment">// Author: Curtis Janssen <cljanss@limitpt.com></font>
00007 <font class="comment">// Maintainer: LPS</font>
00008 <font class="comment">//</font>
00009 <font class="comment">// This file is part of the SC Toolkit.</font>
00010 <font class="comment">//</font>
00011 <font class="comment">// The SC Toolkit is free software; you can redistribute it and/or modify</font>
00012 <font class="comment">// it under the terms of the GNU Library General Public License as published by</font>
00013 <font class="comment">// the Free Software Foundation; either version 2, or (at your option)</font>
00014 <font class="comment">// any later version.</font>
00015 <font class="comment">//</font>
00016 <font class="comment">// The SC Toolkit is distributed in the hope that it will be useful,</font>
00017 <font class="comment">// but WITHOUT ANY WARRANTY; without even the implied warranty of</font>
00018 <font class="comment">// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the</font>
00019 <font class="comment">// GNU Library General Public License for more details.</font>
00020 <font class="comment">//</font>
00021 <font class="comment">// You should have received a copy of the GNU Library General Public License</font>
00022 <font class="comment">// along with the SC Toolkit; see the file COPYING.LIB. If not, write to</font>
00023 <font class="comment">// the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.</font>
00024 <font class="comment">//</font>
00025 <font class="comment">// The U.S. Government is granted a limited license as per AL 91-7.</font>
00026 <font class="comment">//</font>
00027
00028 <font class="preprocessor">#ifdef __GNUC__</font>
00029 <font class="preprocessor"></font><font class="preprocessor">#pragma interface</font>
00030 <font class="preprocessor"></font><font class="preprocessor">#endif</font>
00031 <font class="preprocessor"></font>
00032 <font class="preprocessor">#ifndef _util_misc_compute_h</font>
00033 <font class="preprocessor"></font><font class="preprocessor">#define _util_misc_compute_h</font>
00034 <font class="preprocessor"></font>
00035 <font class="preprocessor">#include <stdio.h></font>
00036 <font class="preprocessor">#include <util/container/avlset.h></font>
00037 <font class="preprocessor">#include <util/state/state.h></font>
00038 <font class="preprocessor">#include <util/state/stateio.h></font>
00039
00040 <font class="keyword">namespace </font>sc {
00041
00042 <font class="keyword">class </font>ResultInfo;
00043 <font class="keyword">class </font>StateIn;
00044 <font class="keyword">class </font>StateOut;
00045
00046 <font class="keyword">typedef</font> ResultInfo* ResultInfoP;
00047
<a name="l00055"></a><a class="code" href="class_sc__Compute.html">00055</a> <font class="keyword">class </font>Compute
00056 {
00057 <font class="keyword">friend</font> <font class="keyword">class </font>ResultInfo;
00058 <font class="keyword">friend</font> <font class="keyword">class </font>AccResultInfo;
00059 <font class="keyword">private</font>:
00060 AVLSet<ResultInfoP> _results;
00061 <font class="keywordtype">void</font> add(ResultInfo*);
00062
00063 <font class="comment">// Prohibit copy</font>
00064 Compute(<font class="keyword">const</font> Compute&)<font class="keyword"> </font>{};
00065
00066 <font class="keyword">protected</font>:
00070 <font class="keyword">virtual</font> <font class="keywordtype">void</font> <a class="code" href="class_sc__Compute.html#b0">compute</a>() = 0;
00071 <font class="keyword">public</font>:
00072 Compute();
00073 <font class="keyword">virtual</font> ~Compute();
00074
00077 <font class="keyword">virtual</font> <font class="keywordtype">void</font> <a class="code" href="class_sc__Compute.html#a2">obsolete</a>();
00078 };
00079
<a name="l00084"></a><a class="code" href="class_sc__ResultInfo.html">00084</a> <font class="keyword">class </font>ResultInfo
00085 {
00086 <font class="keyword">protected</font>:
00087 <font class="keywordtype">int</font> _compute;
00088 <font class="keywordtype">int</font> _computed;
00089 Compute* _c;
00090 <font class="comment">// This make sure that the datum is up to date. If it is not then</font>
00091 <font class="comment">// Compute::compute() will be called.</font>
00092 <font class="keyword">virtual</font> <font class="keywordtype">void</font> update();
00093 <font class="keyword">protected</font>:
00094 ResultInfo(StateIn&,Compute*);
00095 ResultInfo(<font class="keyword">const</font> ResultInfo&,Compute*);
00096 <font class="keyword">virtual</font> <font class="keywordtype">void</font> save_data_state(StateOut&);
00097 <font class="keyword">virtual</font> <font class="keywordtype">void</font> restore_state(StateIn&);
00098 ResultInfo& operator=(<font class="keyword">const</font> ResultInfo&);
00099 <font class="keyword">public</font>:
00100 ResultInfo(Compute*c);
00101 <font class="keyword">virtual</font> ~ResultInfo();
00102 <font class="keywordtype">int</font>& compute()<font class="keyword"> </font>{ <font class="keywordflow">return</font> _compute; }
00103 <font class="keyword">const</font> <font class="keywordtype">int</font>& compute()<font class="keyword"> const </font>{ <font class="keywordflow">return</font> _compute; }
00104 <font class="keywordtype">int</font> compute(<font class="keywordtype">int</font> c)<font class="keyword"> </font>{ <font class="keywordtype">int</font> r = _compute; _compute = c; <font class="keywordflow">return</font> r; }
00105 <font class="keywordtype">int</font>& computed()<font class="keyword"> </font>{ <font class="keywordflow">return</font> _computed; }
00106 <font class="keyword">const</font> <font class="keywordtype">int</font>& computed()<font class="keyword"> const </font>{ <font class="keywordflow">return</font> _computed; }
00107 <font class="keyword">virtual</font> <font class="keywordtype">int</font> needed() <font class="keyword">const</font>;
00108 };
00109
<a name="l00112"></a><a class="code" href="class_sc__AccResultInfo.html">00112</a> <font class="keyword">class </font>AccResultInfo: <font class="keyword">public</font> ResultInfo
00113 {
00114 <font class="keyword">private</font>:
00115 <font class="keywordtype">double</font> _actual_accuracy;
00116 <font class="keywordtype">double</font> _desired_accuracy;
00117 <font class="keyword">protected</font>:
00118 AccResultInfo(StateIn&,Compute*);
00119 AccResultInfo(<font class="keyword">const</font> AccResultInfo&,Compute*);
00120 <font class="keyword">virtual</font> <font class="keywordtype">void</font> save_data_state(StateOut&);
00121 <font class="keyword">virtual</font> <font class="keywordtype">void</font> restore_state(StateIn&);
00122 AccResultInfo& operator=(<font class="keyword">const</font> AccResultInfo&);
00123 <font class="keywordtype">void</font> update();
00124 <font class="keyword">public</font>:
00125 AccResultInfo(Compute*c);
00126 ~AccResultInfo();
00127 <font class="keywordtype">double</font> actual_accuracy() <font class="keyword">const</font>;
00128 <font class="keywordtype">double</font> desired_accuracy() <font class="keyword">const</font>;
00129 <font class="keywordtype">void</font> set_desired_accuracy(<font class="keywordtype">double</font>);
00130 <font class="keywordtype">void</font> set_actual_accuracy(<font class="keywordtype">double</font>);
00131 <font class="keywordtype">int</font> computed_to_desired_accuracy()<font class="keyword"> const</font>
00132 <font class="keyword"> </font>{ <font class="keywordflow">return</font> computed() && _actual_accuracy <= _desired_accuracy; }
00133 <font class="keywordtype">int</font> needed() <font class="keyword">const</font>;
00134 };
00135
00136 }
00137
00138 <font class="preprocessor">#include <util/misc/comptmpl.h></font>
00139
00140 <font class="keyword">namespace </font>sc {
00141
00142 <font class="keyword">typedef</font> NCResult<int> Resultint;
00143 <font class="keyword">typedef</font> NCResult<double> Resultdouble;
00144 <font class="keyword">typedef</font> NCAccResult<double> AccResultdouble;
00145
00146 }
00147
00148 <font class="preprocessor">#endif</font>
00149 <font class="preprocessor"></font>
00150 <font class="comment">// Local Variables:</font>
00151 <font class="comment">// mode: c++</font>
00152 <font class="comment">// c-file-style: "CLJ"</font>
00153 <font class="comment">// End:</font>
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