Paradiseo-eo sources added
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<title>EO: FunDef.h Source File</title>
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<!-- Generated by Doxygen 1.3.9.1 -->
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<a class="qindex" href="main.html">Main 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 Hierarchy</a> | <a class="qindex" href="classes.html">Alphabetical List</a> | <a class="qindex" href="annotated.html">Class List</a> | <a class="qindex" href="files.html">File List</a> | <a class="qindex" href="namespacemembers.html">Namespace Members</a> | <a class="qindex" href="functions.html">Class Members</a> | <a class="qindex" href="pages.html">Related Pages</a> | <span class="search"><u>S</u>earch for <input class="search" type="text" name="query" value="" size="20" accesskey="s"/></span></form></div>
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<a class="el" href="dir_000007.html">contrib</a> / <a class="el" href="dir_000008.html">mathsym</a> / <a class="el" href="dir_000022.html">fun</a></div>
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<h1>FunDef.h</h1><div class="fragment"><pre class="fragment">00001 <span class="comment">/* </span>
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00002 <span class="comment"> * Copyright (C) 2005 Maarten Keijzer</span>
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00003 <span class="comment"> *</span>
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00004 <span class="comment"> * This program is free software; you can redistribute it and/or modify</span>
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00005 <span class="comment"> * it under the terms of version 2 of the GNU General Public License as </span>
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00006 <span class="comment"> * published by the Free Software Foundation. </span>
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00007 <span class="comment"> *</span>
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00008 <span class="comment"> * This program is distributed in the hope that it will be useful,</span>
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00009 <span class="comment"> * but WITHOUT ANY WARRANTY; without even the implied warranty of</span>
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00010 <span class="comment"> * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the</span>
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00011 <span class="comment"> * GNU General Public License for more details.</span>
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00012 <span class="comment"> *</span>
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00013 <span class="comment"> * You should have received a copy of the GNU General Public License</span>
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00014 <span class="comment"> * along with this program; if not, write to the Free Software</span>
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00015 <span class="comment"> * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA</span>
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00016 <span class="comment"> */</span>
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00017
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00018 <span class="preprocessor">#ifndef FUNCTION_DEF_H_</span>
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00019 <span class="preprocessor"></span><span class="preprocessor">#define FUNCTION_DEF_H_</span>
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00020 <span class="preprocessor"></span>
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00021 <span class="preprocessor">#include <string></span>
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00022 <span class="preprocessor">#include <vector></span>
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00023 <span class="preprocessor">#include <memory></span>
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00024 <span class="preprocessor">#include <iostream></span>
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00025
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00026 <span class="preprocessor">#include "Sym.h"</span>
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00027 <span class="preprocessor">#include "Interval.h"</span>
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00028
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00029 <span class="keyword">class </span>FunDef {
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00030 <span class="keyword">public</span>:
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00031
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00032 <span class="keyword">virtual</span> ~FunDef() {}
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00033
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00034 <span class="comment">// (possibly) lazy evaluation function, default implementation calls 'eager' eval</span>
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00035 <span class="keyword">virtual</span> <span class="keywordtype">double</span> eval(<span class="keyword">const</span> SymVec& args, <span class="keyword">const</span> std::vector<double>& inputs) <span class="keyword">const</span>;
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00036
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00037 <span class="comment">// eager evaluation function </span>
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00038 <span class="keyword">virtual</span> <span class="keywordtype">double</span> eval(<span class="keyword">const</span> std::vector<double>& args, <span class="keyword">const</span> std::vector<double>& inputs) <span class="keyword">const </span>= 0;
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00039
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00040 <span class="comment">// interval evaluation</span>
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00041 <span class="keyword">virtual</span> Interval eval(<span class="keyword">const</span> std::vector<Interval>& args, <span class="keyword">const</span> std::vector<Interval>& inputs) <span class="keyword">const </span>= 0;
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00042
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00043 <span class="comment">// prints 'c' like code</span>
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00044 <span class="keyword">virtual</span> std::string c_print(<span class="keyword">const</span> std::vector<std::string>& names, <span class="keyword">const</span> std::vector<std::string>& names) <span class="keyword">const </span>= 0;
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00045
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00046 <span class="keyword">virtual</span> <span class="keywordtype">unsigned</span> min_arity() <span class="keyword">const </span>= 0;
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00047 <span class="keyword">virtual</span> <span class="keywordtype">bool</span> has_varargs()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> <span class="keyword">false</span>; } <span class="comment">// sum, prod, min, max are variable arity</span>
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00048
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00049 <span class="keyword">virtual</span> std::string name() <span class="keyword">const </span>= 0;
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00050
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00051 <span class="keyword">protected</span>:
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00052
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00053 };
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00054
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00056 <span class="keyword">extern</span> std::vector<const FunDef*> get_defined_functions();
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00057
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00059 <span class="keyword">extern</span> <span class="keyword">const</span> FunDef& get_element(token_t token);
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00060
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00062 <span class="keyword">extern</span> <span class="keywordtype">double</span> eval(<span class="keyword">const</span> Sym& sym, <span class="keyword">const</span> std::vector<double>& inputs);
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00063
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00065 <span class="keyword">extern</span> Interval eval(<span class="keyword">const</span> Sym& sym, <span class="keyword">const</span> std::vector<Interval>& inputs);
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00066
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00068 <span class="keyword">extern</span> std::string c_print(<span class="keyword">const</span> Sym& sym);
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00069
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00071 <span class="keyword">extern</span> std::string c_print(<span class="keyword">const</span> Sym& sym, <span class="keyword">const</span> std::vector<std::string>& var_names);
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00072
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00074 <span class="keyword">inline</span> std::ostream& operator<<(std::ostream& os, <span class="keyword">const</span> Sym& sym) { <span class="keywordflow">return</span> os << c_print(sym); }
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00075
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00076 <span class="comment">/* Support for Ephemeral Random Constants (ERC) */</span>
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00077
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00079 <span class="keyword">extern</span> Sym SymConst(<span class="keywordtype">double</span> value);
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00081 <span class="keyword">extern</span> Sym SymVar(<span class="keywordtype">unsigned</span> idx);
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00082
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00093 <span class="keyword">extern</span> Sym SymLambda(Sym expression);
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00094
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00095 <span class="keyword">extern</span> Sym SymUnlambda(Sym sym);
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00096
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00098 <span class="keyword">extern</span> Sym expand_all(Sym sym);
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00099 <span class="keyword">extern</span> Sym compress(Sym sym);
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00100
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00102 std::vector<double> get_constants(Sym sym);
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00103
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00106 Sym set_constants(Sym sym, <span class="keyword">const</span> std::vector<double>& constants);
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00107
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00109 <span class="keyword">extern</span> <span class="keywordtype">bool</span> is_constant(token_t token);
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00110 <span class="keyword">extern</span> <span class="keywordtype">double</span> get_constant_value(token_t token);
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00112 <span class="keyword">extern</span> <span class="keywordtype">bool</span> is_variable(token_t token);
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00113 <span class="keyword">extern</span> <span class="keywordtype">unsigned</span> get_variable_index(token_t token);
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00114
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00116 <span class="keyword">extern</span> <span class="keywordtype">bool</span> is_lambda(token_t token);
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00117
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00118
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00120 <span class="keyword">extern</span> Sym simplify(Sym sym);
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00121
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00125 <span class="keyword">extern</span> Sym differentiate(Sym sym, token_t dx);
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00126 <span class="keyword">struct </span>differentiation_error{}; <span class="comment">// thrown in case of ifltz</span>
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00127
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00128 <span class="comment">/* Add function to the language table (and take a guess at the arity) */</span>
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00129 <span class="keyword">class </span>LanguageTable;
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00130 <span class="keyword">extern</span> <span class="keywordtype">void</span> add_function_to_table(LanguageTable& table, token_t token);
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00131
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00132 <span class="keyword">enum</span> {
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00133 sum_token,
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00134 prod_token,
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00135 inv_token,
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00136 min_token,
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00137 pow_token,
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00138 ifltz_token,
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00139 sin_token, cos_token, tan_token,
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00140 asin_token, acos_token, atan_token,
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00141 sinh_token, cosh_token, tanh_token,
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00142 acosh_token, asinh_token, atanh_token,
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00143 exp_token, log_token,
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00144 sqr_token, sqrt_token
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00145 };
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00146
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00147 <span class="comment">/* Defition of function overloads: for example, this define the function 'Sym sin(Sym)' */</span>
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00148
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00149 <span class="preprocessor">#define HEADERFUNC(name) inline Sym name(Sym arg) { return Sym(name##_token, arg); }</span>
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00150 <span class="preprocessor"></span>
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00151 <span class="comment">/* This defines the tokens: sin_token, cos_token, etc. */</span>
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00152 HEADERFUNC(inv);
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00153 HEADERFUNC(sin);
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00154 HEADERFUNC(cos);
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00155 HEADERFUNC(tan);
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00156 HEADERFUNC(asin);
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00157 HEADERFUNC(acos);
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00158 HEADERFUNC(atan);
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00159
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00160 HEADERFUNC(sinh);
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00161 HEADERFUNC(cosh);
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00162 HEADERFUNC(tanh);
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00163 HEADERFUNC(asinh);
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00164 HEADERFUNC(acosh);
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00165 HEADERFUNC(atanh);
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00166
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00167 HEADERFUNC(exp);
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00168 HEADERFUNC(log);
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00169
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00170 HEADERFUNC(sqr);
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00171 HEADERFUNC(sqrt);
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00172
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00173 <span class="comment">/* Get the prototype functions out, this is needed for compilation */</span>
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00174 <span class="keyword">extern</span> std::string get_prototypes();
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00175
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00176 <span class="comment">// reading and writing in internal format, no parser for symbolic functions implemented yet</span>
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00177 <span class="keyword">extern</span> std::string write_raw(<span class="keyword">const</span> Sym& sym);
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00178 <span class="keyword">extern</span> <span class="keywordtype">void</span> write_raw(std::ostream& os, <span class="keyword">const</span> Sym& sym);
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00179 <span class="keyword">extern</span> Sym read_raw(std::string str);
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00180 <span class="keyword">extern</span> Sym read_raw(std::istream& is);
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00181 <span class="keyword">extern</span> <span class="keywordtype">void</span> read_raw(std::istream& is, Sym& sym);
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00182
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00183 <span class="preprocessor">#include "SymOps.h"</span>
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00184
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00185 <span class="preprocessor">#endif</span>
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00186 <span class="preprocessor"></span>
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</pre></div><hr size="1"><address style="align: right;"><small>Generated on Thu Oct 19 05:06:40 2006 for EO by
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<a href="http://www.doxygen.org/index.html">
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<img src="doxygen.png" alt="doxygen" align="middle" border="0"></a> 1.3.9.1 </small></address>
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