nojhan/paradiseo
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity
paradiseo/trunk/paradiseo-eo/doc/html/eo_how_many_8h-source.html
legrand c3aec878e5 Paradiseo-eo sources added 
git-svn-id: svn://scm.gforge.inria.fr/svnroot/paradiseo@40 331e1502-861f-0410-8da2-ba01fb791d7f
2006-12-12 14:49:08 +00:00

153 lines
10 KiB
HTML
Raw Blame History

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html><head><meta http-equiv="Content-Type" content="text/html;charset=iso-8859-1">
<title>EO: eoHowMany.h Source File</title>
<link href="doxygen.css" rel="stylesheet" type="text/css">
</head><body>
<!-- Generated by Doxygen 1.3.9.1 -->
<div class="qindex"> <form class="search" action="search.php" method="get">
<a class="qindex" href="main.html">Main&nbsp;Page</a> | <a class="qindex" href="modules.html">Modules</a> | <a class="qindex" href="namespaces.html">Namespace List</a> | <a class="qindex" href="hierarchy.html">Class&nbsp;Hierarchy</a> | <a class="qindex" href="classes.html">Alphabetical&nbsp;List</a> | <a class="qindex" href="annotated.html">Class&nbsp;List</a> | <a class="qindex" href="files.html">File&nbsp;List</a> | <a class="qindex" href="namespacemembers.html">Namespace&nbsp;Members</a> | <a class="qindex" href="functions.html">Class&nbsp;Members</a> | <a class="qindex" href="pages.html">Related&nbsp;Pages</a> | <span class="search"><u>S</u>earch&nbsp;for&nbsp;<input class="search" type="text" name="query" value="" size="20" accesskey="s"/></span></form></div>
<div class="nav">
<a class="el" href="dir_000000.html">src</a>&nbsp;/&nbsp;<a class="el" href="dir_000011.html">utils</a></div>
<h1>eoHowMany.h</h1><div class="fragment"><pre class="fragment">00001 <span class="comment">// -*- mode: c++; c-indent-level: 4; c++-member-init-indent: 8; comment-column: 35; -*-</span>
00002
00003 <span class="comment">//-----------------------------------------------------------------------------</span>
00004 <span class="comment">// eoHowMany_h.h</span>
00005 <span class="comment">// Base class for choosing a number of guys to apply something from a popsize</span>
00006 <span class="comment">// (c) Marc Schoenauer, 2000</span>
00007 <span class="comment">/*</span>
00008 <span class="comment"> This library is free software; you can redistribute it and/or</span>
00009 <span class="comment"> modify it under the terms of the GNU Lesser General Public</span>
00010 <span class="comment"> License as published by the Free Software Foundation; either</span>
00011 <span class="comment"> version 2 of the License, or (at your option) any later version.</span>
00012 <span class="comment"></span>
00013 <span class="comment"> This library is distributed in the hope that it will be useful,</span>
00014 <span class="comment"> but WITHOUT ANY WARRANTY; without even the implied warranty of</span>
00015 <span class="comment"> MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU</span>
00016 <span class="comment"> Lesser General Public License for more details.</span>
00017 <span class="comment"></span>
00018 <span class="comment"> You should have received a copy of the GNU Lesser General Public</span>
00019 <span class="comment"> License along with this library; if not, write to the Free Software</span>
00020 <span class="comment"> Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA</span>
00021 <span class="comment"></span>
00022 <span class="comment"> Contact: todos@geneura.ugr.es, http://geneura.ugr.es</span>
00023 <span class="comment"> */</span>
00024 <span class="comment">//-----------------------------------------------------------------------------</span>
00025
00026 <span class="preprocessor">#ifndef eoHowMany_h</span>
00027 <span class="preprocessor"></span><span class="preprocessor">#define eoHowMany_h</span>
00028 <span class="preprocessor"></span>
00067 <span class="preprocessor">#include &lt;sstream&gt;</span>
00068
<a name="l00069"></a><a class="code" href="classeo_how_many.html">00069</a> <span class="keyword">class </span><a class="code" href="classeo_how_many.html">eoHowMany</a> : <span class="keyword">public</span> <a class="code" href="classeo_persistent.html">eoPersistent</a>
00070 {
00071 <span class="keyword">public</span>:
<a name="l00076"></a><a class="code" href="classeo_how_many.html#a0">00076</a> <a class="code" href="classeo_how_many.html#a0">eoHowMany</a>(<span class="keywordtype">double</span> _rate = 0.0, <span class="keywordtype">bool</span> _interpret_as_rate = <span class="keyword">true</span>):
00077 rate(_rate), combien(0)
00078 {
00079 <span class="keywordflow">if</span> (_interpret_as_rate)
00080 {
00081 <span class="keywordflow">if</span> (_rate&lt;0)
00082 {
00083 rate = 1.0+_rate;
00084 <span class="keywordflow">if</span> (rate &lt; 0) <span class="comment">// was &lt; -1</span>
00085 <span class="keywordflow">throw</span> std::logic_error(<span class="stringliteral">"rate&lt;-1 in eoHowMany!"</span>);
00086 }
00087 }
00088 <span class="keywordflow">else</span>
00089 {
00090 rate = 0.0; <span class="comment">// just in case, but shoud be unused</span>
00091 combien = int(_rate); <span class="comment">// negative values are allowed here</span>
00092 <span class="keywordflow">if</span> (combien != _rate)
00093 std::cerr &lt;&lt; <span class="stringliteral">"Warning: Number was rounded in eoHowMany"</span>;
00094 }
00095 }
00096
<a name="l00099"></a><a class="code" href="classeo_how_many.html#a1">00099</a> <a class="code" href="classeo_how_many.html#a0">eoHowMany</a>(<span class="keywordtype">int</span> _combien) : rate(0.0), combien(_combien) {}
00100
<a name="l00103"></a><a class="code" href="classeo_how_many.html#a2">00103</a> <a class="code" href="classeo_how_many.html#a0">eoHowMany</a>(<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> _combien) : rate(0.0), combien(_combien) {}
00104
<a name="l00106"></a><a class="code" href="classeo_how_many.html#a3">00106</a> <span class="keyword">virtual</span> <a class="code" href="classeo_how_many.html#a3">~eoHowMany</a>() {}
00107
<a name="l00114"></a><a class="code" href="classeo_how_many.html#a4">00114</a> <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> <a class="code" href="classeo_how_many.html#a4">operator()</a>(<span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> _size)
00115 {
00116 <span class="keywordflow">if</span> (combien == 0)
00117 {
00118 <span class="keywordflow">return</span> (<span class="keywordtype">unsigned</span> int) (rate * _size);
00119 }
00120 <span class="keywordflow">if</span> (combien &lt; 0)
00121 {
00122 <span class="keywordtype">unsigned</span> <span class="keywordtype">int</span> combloc = -combien;
00123 <span class="keywordflow">if</span> (_size&lt;combloc)
00124 <span class="keywordflow">throw</span> std::runtime_error(<span class="stringliteral">"Negative result in eoHowMany"</span>);
00125 <span class="keywordflow">return</span> _size-combloc;
00126 }
00127 <span class="keywordflow">return</span> unsigned(combien);
00128 }
00129
<a name="l00130"></a><a class="code" href="classeo_how_many.html#a5">00130</a> <span class="keyword">virtual</span> <span class="keywordtype">void</span> <a class="code" href="classeo_how_many.html#a5">printOn</a>(std::ostream&amp; _os)<span class="keyword"> const</span>
00131 <span class="keyword"> </span>{
00132 <span class="keywordflow">if</span> (combien == 0)
00133 _os &lt;&lt; 100*rate &lt;&lt; <span class="stringliteral">"% "</span>;
00134 <span class="keywordflow">else</span>
00135 _os &lt;&lt; combien &lt;&lt; <span class="stringliteral">" "</span>;
00136 <span class="keywordflow">return</span>;
00137
00138 }
00139
<a name="l00140"></a><a class="code" href="classeo_how_many.html#a6">00140</a> <span class="keyword">virtual</span> <span class="keywordtype">void</span> <a class="code" href="classeo_how_many.html#a6">readFrom</a>(std::istream&amp; _is)
00141 {
00142 std::string value;
00143 _is &gt;&gt; value;
00144 <a class="code" href="classeo_how_many.html#a6">readFrom</a>(value);
00145 <span class="keywordflow">return</span>;
00146 }
00147
00148 <span class="keywordtype">void</span> <a class="code" href="classeo_how_many.html#a6">readFrom</a>(std::string _value)
00149 {
00150 <span class="comment">// check for %</span>
00151 <span class="keywordtype">bool</span> interpret_as_rate = <span class="keyword">false</span>; <span class="comment">// == no %</span>
00152 size_t pos = _value.find(<span class="charliteral">'%'</span>);
00153 <span class="keywordflow">if</span> (pos &lt; _value.size()) <span class="comment">// found a %</span>
00154 {
00155 interpret_as_rate = <span class="keyword">true</span>;
00156 _value.resize(pos); <span class="comment">// get rid of %</span>
00157 }
00158
00159 std::istringstream is(_value);
00160 is &gt;&gt; rate;
00161 <span class="comment">// now store</span>
00162 <span class="keywordflow">if</span> (interpret_as_rate)
00163 {
00164 combien = 0;
00165 rate /= 100.0;
00166 }
00167 <span class="keywordflow">else</span>
00168 combien = int(rate); <span class="comment">// and rate will not be used</span>
00169
00170 <span class="comment">// minimal check</span>
00171 <span class="keywordflow">if</span> ( rate &lt; 0.0 )
00172 <span class="keywordflow">throw</span> std::runtime_error(<span class="stringliteral">"Negative rate read in eoHowMany::readFrom"</span>);
00173 }
00174
<a name="l00176"></a><a class="code" href="classeo_how_many.html#a8">00176</a> <a class="code" href="classeo_how_many.html">eoHowMany</a> <a class="code" href="classeo_how_many.html#a8">operator-</a>()
00177 {
00178 <span class="keywordflow">if</span> (!combien) <span class="comment">// only rate is used</span>
00179 rate = 1.0-rate;
00180 <span class="keywordflow">else</span>
00181 combien = -combien;
00182 <span class="keywordflow">return</span> (*this);
00183 }
00184
00185 <span class="keyword">private</span> :
00186 <span class="keywordtype">double</span> rate;
00187 <span class="keywordtype">int</span> combien;
00188 };
00189
00190
00191
00192 <span class="preprocessor">#endif</span>
</pre></div><hr size="1"><address style="align: right;"><small>Generated on Thu Oct 19 05:06:36 2006 for EO by&nbsp;
<a href="http://www.doxygen.org/index.html">
<img src="doxygen.png" alt="doxygen" align="middle" border="0"></a> 1.3.9.1 </small></address>
</body>
</html>
Reference in a new issue View git blame Copy permalink