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Пелипенко Иван
2017-02-27 12:48:57 +00:00
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<div id="projectname">PIP
&#160;<span id="projectnumber">0.5.0_alpha</span>
&#160;<span id="projectnumber">0.7.1</span>
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<div id="projectbrief">Platform-Independent Primitives</div>
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<table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-methods"></a>
Public Member Functions</h2></td></tr>
<tr class="memitem:a4fe9e776a1db6cc5b55665304764cf20"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a4fe9e776a1db6cc5b55665304764cf20"></a>
<tr class="memitem:a4fe9e776a1db6cc5b55665304764cf20"><td class="memItemLeft" align="right" valign="top"><a id="a4fe9e776a1db6cc5b55665304764cf20"></a>
&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_p_i_evaluator.html#a4fe9e776a1db6cc5b55665304764cf20">PIEvaluator</a> ()</td></tr>
<tr class="memdesc:a4fe9e776a1db6cc5b55665304764cf20"><td class="mdescLeft">&#160;</td><td class="mdescRight">Constructs an empty evaluator. <br /></td></tr>
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void *&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_p_i_evaluator.html#ac5d8118fce80c08a8ae3ad2215625839">data</a> ()</td></tr>
<tr class="memdesc:ac5d8118fce80c08a8ae3ad2215625839"><td class="mdescLeft">&#160;</td><td class="mdescRight">Returns custom data. <br /></td></tr>
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void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_p_i_evaluator.html#a56921d7e9aac1543eeee4d52b220f8ac">setData</a> (void *_data)</td></tr>
<tr class="memdesc:a56921d7e9aac1543eeee4d52b220f8ac"><td class="mdescLeft">&#160;</td><td class="mdescRight">Set custom data to "_data". <br /></td></tr>
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bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_p_i_evaluator.html#a1eae7848dc5d9d740a18acf4538ec34f">check</a> (const <a class="el" href="class_p_i_string.html">PIString</a> &amp;string)</td></tr>
<tr class="memdesc:a1eae7848dc5d9d740a18acf4538ec34f"><td class="mdescLeft">&#160;</td><td class="mdescRight">Check mathematical expression and parse it to list of instructions. <br /></td></tr>
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bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_p_i_evaluator.html#ac9a77afecf7a5ca245c920a491f4386f">isCorrect</a> () const </td></tr>
<tr class="memdesc:ac9a77afecf7a5ca245c920a491f4386f"><td class="mdescLeft">&#160;</td><td class="mdescRight">Returns true if expression was checked succesfully. <br /></td></tr>
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bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_p_i_evaluator.html#ac425e3ea02ea1e5b48d1ac4568b186c8">isCorrect</a> () const</td></tr>
<tr class="memdesc:ac425e3ea02ea1e5b48d1ac4568b186c8"><td class="mdescLeft">&#160;</td><td class="mdescRight">Returns true if expression was checked succesfully. <br /></td></tr>
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int&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_p_i_evaluator.html#a066713e986ccf0abbdffc1dd4ab8a487">setVariable</a> (const <a class="el" href="class_p_i_string.html">PIString</a> &amp;name, complexd value=0.)</td></tr>
<tr class="memdesc:a066713e986ccf0abbdffc1dd4ab8a487"><td class="mdescLeft">&#160;</td><td class="mdescRight">Set variable value with name "name" to value "value". Add variable if it doesn`t exists. <br /></td></tr>
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void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_p_i_evaluator.html#ad83802b50958b28193a523144b7e8d55">setVariable</a> (int index, complexd value=0.)</td></tr>
<tr class="memdesc:ad83802b50958b28193a523144b7e8d55"><td class="mdescLeft">&#160;</td><td class="mdescRight">Set variable value with index "index" to value "value". Don<code>t add variable if it doesn</code>t exists. <br /></td></tr>
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complexd&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_p_i_evaluator.html#abc6012ab974a16f99b08cc2773142b79">evaluate</a> ()</td></tr>
<tr class="memdesc:abc6012ab974a16f99b08cc2773142b79"><td class="mdescLeft">&#160;</td><td class="mdescRight">Evaluate last successfully checked with function <em>check()</em> expression and returns result. <br /></td></tr>
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void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_p_i_evaluator.html#a10a2ad62c7636b8c343ca0a60afcb9d0">removeVariable</a> (const <a class="el" href="class_p_i_string.html">PIString</a> &amp;name)</td></tr>
<tr class="memdesc:a10a2ad62c7636b8c343ca0a60afcb9d0"><td class="mdescLeft">&#160;</td><td class="mdescRight">Remove variable with name "name". <br /></td></tr>
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void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_p_i_evaluator.html#aa96ba5c4174592341d65eaebffd7fece">clearCustomVariables</a> ()</td></tr>
<tr class="memdesc:aa96ba5c4174592341d65eaebffd7fece"><td class="mdescLeft">&#160;</td><td class="mdescRight">Remove all manually added variables. <br /></td></tr>
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int&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_p_i_evaluator.html#ac20bb44234749ce227df1b95fcc319ae">variableIndex</a> (const <a class="el" href="class_p_i_string.html">PIString</a> &amp;name) const </td></tr>
<tr class="memdesc:ac20bb44234749ce227df1b95fcc319ae"><td class="mdescLeft">&#160;</td><td class="mdescRight">Returns index of variable with name "name". <br /></td></tr>
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const <a class="el" href="class_p_i_string_list.html">PIStringList</a> &amp;&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_p_i_evaluator.html#a7d1a1ce4eea722fde90e487f397cd25c">unknownVariables</a> () const </td></tr>
<tr class="memdesc:a7d1a1ce4eea722fde90e487f397cd25c"><td class="mdescLeft">&#160;</td><td class="mdescRight">Returns all unknown variables founded in last expression passed to <em>check()</em> function. <br /></td></tr>
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const <a class="el" href="class_p_i_string.html">PIString</a> &amp;&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_p_i_evaluator.html#ac9a0a4fd65af2518d8efdaa9c5298991">expression</a> () const </td></tr>
<tr class="memdesc:ac9a0a4fd65af2518d8efdaa9c5298991"><td class="mdescLeft">&#160;</td><td class="mdescRight">Returns processed last expression passed to <em>check()</em> function. <br /></td></tr>
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const <a class="el" href="class_p_i_string.html">PIString</a> &amp;&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_p_i_evaluator.html#ac3e87ff15b4b04240b133affaf09e72b">error</a> () const </td></tr>
<tr class="memdesc:ac3e87ff15b4b04240b133affaf09e72b"><td class="mdescLeft">&#160;</td><td class="mdescRight">Returns last error description occured in <em>check()</em> function. <br /></td></tr>
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const complexd &amp;&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_p_i_evaluator.html#a50b2b35e52268072b8b2080f9dcf1d2c">lastResult</a> () const </td></tr>
<tr class="memdesc:a50b2b35e52268072b8b2080f9dcf1d2c"><td class="mdescLeft">&#160;</td><td class="mdescRight">Returns last result of <em><a class="el" href="class_p_i_evaluator.html#abc6012ab974a16f99b08cc2773142b79" title="Evaluate last successfully checked with function check() expression and returns result. ">evaluate()</a></em> <br /></td></tr>
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int&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_p_i_evaluator.html#abeada1ebd67339a6f55a503d5b7bb88e">variableIndex</a> (const <a class="el" href="class_p_i_string.html">PIString</a> &amp;name) const</td></tr>
<tr class="memdesc:abeada1ebd67339a6f55a503d5b7bb88e"><td class="mdescLeft">&#160;</td><td class="mdescRight">Returns index of variable with name "name". <br /></td></tr>
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const <a class="el" href="class_p_i_string_list.html">PIStringList</a> &amp;&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_p_i_evaluator.html#aa48a9b0cd74da5f40eacef791deeb4c2">unknownVariables</a> () const</td></tr>
<tr class="memdesc:aa48a9b0cd74da5f40eacef791deeb4c2"><td class="mdescLeft">&#160;</td><td class="mdescRight">Returns all unknown variables founded in last expression passed to <em>check()</em> function. <br /></td></tr>
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const <a class="el" href="class_p_i_string.html">PIString</a> &amp;&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_p_i_evaluator.html#a61c693ab0a6f20d9d7c2051154c27d32">expression</a> () const</td></tr>
<tr class="memdesc:a61c693ab0a6f20d9d7c2051154c27d32"><td class="mdescLeft">&#160;</td><td class="mdescRight">Returns processed last expression passed to <em>check()</em> function. <br /></td></tr>
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const <a class="el" href="class_p_i_string.html">PIString</a> &amp;&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_p_i_evaluator.html#a5a382efc32bff7a5249afa6beddb8f50">error</a> () const</td></tr>
<tr class="memdesc:a5a382efc32bff7a5249afa6beddb8f50"><td class="mdescLeft">&#160;</td><td class="mdescRight">Returns last error description occured in <em>check()</em> function. <br /></td></tr>
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const complexd &amp;&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_p_i_evaluator.html#aae408ab0e526d9e2e3a72106ce20643a">lastResult</a> () const</td></tr>
<tr class="memdesc:aae408ab0e526d9e2e3a72106ce20643a"><td class="mdescLeft">&#160;</td><td class="mdescRight">Returns last result of <em><a class="el" href="class_p_i_evaluator.html#abc6012ab974a16f99b08cc2773142b79" title="Evaluate last successfully checked with function check() expression and returns result. ">evaluate()</a></em> <br /></td></tr>
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><p>This class provide mathematical evaluations of custom expression. </p>
<h1><a class="anchor" id="PIEvaluator_sec0"></a>
Synopsis</h1>
<p>PIEvaluator developed for stream evaluations of once set expression. It`s create internal list of instructions on function <em>check()</em> and executes very fast on function <em><a class="el" href="class_p_i_evaluator.html#abc6012ab974a16f99b08cc2773142b79" title="Evaluate last successfully checked with function check() expression and returns result. ">evaluate()</a></em>. Once given expression can be evaluated any times with different variable values. Evaluator supports many common mathematic functions described below. Also it`s automatic puts unnecessarily signs and bracets. Processed expression can be obtains with function <em><a class="el" href="class_p_i_evaluator.html#ac9a0a4fd65af2518d8efdaa9c5298991" title="Returns processed last expression passed to check() function. ">expression()</a></em>. If there is an error in expression you can get it with function <em><a class="el" href="class_p_i_evaluator.html#ac3e87ff15b4b04240b133affaf09e72b" title="Returns last error description occured in check() function. ">error()</a></em>. Last evaluated result you can get with function <em><a class="el" href="class_p_i_evaluator.html#a50b2b35e52268072b8b2080f9dcf1d2c" title="Returns last result of evaluate() ">lastResult()</a></em>. </p>
<p>PIEvaluator developed for stream evaluations of once set expression. It`s create internal list of instructions on function <em>check()</em> and executes very fast on function <em><a class="el" href="class_p_i_evaluator.html#abc6012ab974a16f99b08cc2773142b79" title="Evaluate last successfully checked with function check() expression and returns result. ">evaluate()</a></em>. Once given expression can be evaluated any times with different variable values. Evaluator supports many common mathematic functions described below. Also it`s automatic puts unnecessarily signs and bracets. Processed expression can be obtains with function <em><a class="el" href="class_p_i_evaluator.html#a61c693ab0a6f20d9d7c2051154c27d32" title="Returns processed last expression passed to check() function. ">expression()</a></em>. If there is an error in expression you can get it with function <em><a class="el" href="class_p_i_evaluator.html#a5a382efc32bff7a5249afa6beddb8f50" title="Returns last error description occured in check() function. ">error()</a></em>. Last evaluated result you can get with function <em><a class="el" href="class_p_i_evaluator.html#aae408ab0e526d9e2e3a72106ce20643a" title="Returns last result of evaluate() ">lastResult()</a></em>. </p>
<h1><a class="anchor" id="PIEvaluator_sec1"></a>
Using</h1>
<p>First you should set your variables with function <em><a class="el" href="class_p_i_evaluator.html#a066713e986ccf0abbdffc1dd4ab8a487" title="Set variable value with name &quot;name&quot; to value &quot;value&quot;. Add variable if it doesn`t exists. ">setVariable()</a></em>. Next give your expression with function <em>check()</em> and check for error with functions <em><a class="el" href="class_p_i_evaluator.html#ac9a77afecf7a5ca245c920a491f4386f" title="Returns true if expression was checked succesfully. ">isCorrect()</a></em> and <em><a class="el" href="class_p_i_evaluator.html#ac3e87ff15b4b04240b133affaf09e72b" title="Returns last error description occured in check() function. ">error()</a></em>. If expression is correct you can get processed expression with function <em><a class="el" href="class_p_i_evaluator.html#ac9a0a4fd65af2518d8efdaa9c5298991" title="Returns processed last expression passed to check() function. ">expression()</a></em> and evaluate it with function <em><a class="el" href="class_p_i_evaluator.html#abc6012ab974a16f99b08cc2773142b79" title="Evaluate last successfully checked with function check() expression and returns result. ">evaluate()</a></em>. You can change variable values without rechecking expression.</p>
<p>First you should set your variables with function <em><a class="el" href="class_p_i_evaluator.html#a066713e986ccf0abbdffc1dd4ab8a487" title="Set variable value with name &quot;name&quot; to value &quot;value&quot;. Add variable if it doesn`t exists. ">setVariable()</a></em>. Next give your expression with function <em>check()</em> and check for error with functions <em><a class="el" href="class_p_i_evaluator.html#ac425e3ea02ea1e5b48d1ac4568b186c8" title="Returns true if expression was checked succesfully. ">isCorrect()</a></em> and <em><a class="el" href="class_p_i_evaluator.html#a5a382efc32bff7a5249afa6beddb8f50" title="Returns last error description occured in check() function. ">error()</a></em>. If expression is correct you can get processed expression with function <em><a class="el" href="class_p_i_evaluator.html#a61c693ab0a6f20d9d7c2051154c27d32" title="Returns processed last expression passed to check() function. ">expression()</a></em> and evaluate it with function <em><a class="el" href="class_p_i_evaluator.html#abc6012ab974a16f99b08cc2773142b79" title="Evaluate last successfully checked with function check() expression and returns result. ">evaluate()</a></em>. You can change variable values without rechecking expression.</p>
<h1><a class="anchor" id="PIEvaluator_sec2"></a>
Functions</h1>
<p>PIEvaluator supports arithmetical operations with complex numbers, this is their list in priority order:</p><ul>
@@ -222,40 +213,15 @@ Functions</h1>
<p>All trigonometric functions takes angle in radians.</p>
<h1><a class="anchor" id="PIEvaluator_sec3"></a>
Example</h1>
<div class="fragment"><div class="line"><a class="code" href="class_p_i_evaluator.html">PIEvaluator</a> eval;</div>
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<div class="line">eval.<a class="code" href="class_p_i_evaluator.html#a1eae7848dc5d9d740a18acf4538ec34f">check</a>(<span class="stringliteral">&quot;e2eelge&quot;</span>);</div>
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<div class="line"><a class="code" href="picout_8h.html#ad21862cbba89aead064fbef4c825030e">piCout</a> &lt;&lt; eval.<a class="code" href="class_p_i_evaluator.html#ac9a0a4fd65af2518d8efdaa9c5298991">expression</a>() &lt;&lt; <span class="stringliteral">&quot;=&quot;</span> &lt;&lt; eval.<a class="code" href="class_p_i_evaluator.html#abc6012ab974a16f99b08cc2773142b79">evaluate</a>();</div>
<div class="line"><span class="comment">// e*2*e*e*lg(e) = (17.4461; 0)</span></div>
<div class="line"></div>
<div class="line">eval.<a class="code" href="class_p_i_evaluator.html#a1eae7848dc5d9d740a18acf4538ec34f">check</a>(<span class="stringliteral">&quot;10x&quot;</span>);</div>
<div class="line"></div>
<div class="line"><a class="code" href="picout_8h.html#ad21862cbba89aead064fbef4c825030e">piCout</a> &lt;&lt; eval.<a class="code" href="class_p_i_evaluator.html#ac3e87ff15b4b04240b133affaf09e72b">error</a>() &lt;&lt; eval.<a class="code" href="class_p_i_evaluator.html#a7d1a1ce4eea722fde90e487f397cd25c">unknownVariables</a>();</div>
<div class="line"><span class="comment">// Unknown variables: &quot;x&quot; {&quot;x&quot;}</span></div>
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<div class="line">eval.<a class="code" href="class_p_i_evaluator.html#a066713e986ccf0abbdffc1dd4ab8a487">setVariable</a>(<span class="stringliteral">&quot;x&quot;</span>, complexd(1, 2));</div>
<div class="line">eval.<a class="code" href="class_p_i_evaluator.html#a1eae7848dc5d9d740a18acf4538ec34f">check</a>(<span class="stringliteral">&quot;10x&quot;</span>);</div>
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<div class="line"><a class="code" href="picout_8h.html#ad21862cbba89aead064fbef4c825030e">piCout</a> &lt;&lt; eval.<a class="code" href="class_p_i_evaluator.html#ac3e87ff15b4b04240b133affaf09e72b">error</a>() &lt;&lt; eval.<a class="code" href="class_p_i_evaluator.html#a7d1a1ce4eea722fde90e487f397cd25c">unknownVariables</a>();</div>
<div class="line"><span class="comment">// Correct {}</span></div>
<div class="line"></div>
<div class="line"><a class="code" href="picout_8h.html#ad21862cbba89aead064fbef4c825030e">piCout</a> &lt;&lt; eval.<a class="code" href="class_p_i_evaluator.html#ac9a0a4fd65af2518d8efdaa9c5298991">expression</a>() &lt;&lt; <span class="stringliteral">&quot;=&quot;</span> &lt;&lt; eval.<a class="code" href="class_p_i_evaluator.html#abc6012ab974a16f99b08cc2773142b79">evaluate</a>();</div>
<div class="line"><span class="comment">// 10*x = (10; 20)</span></div>
<div class="line"></div>
<div class="line">eval.<a class="code" href="class_p_i_evaluator.html#a066713e986ccf0abbdffc1dd4ab8a487">setVariable</a>(<span class="stringliteral">&quot;x&quot;</span>, complexd(-2, 0));</div>
<div class="line"></div>
<div class="line"><a class="code" href="picout_8h.html#ad21862cbba89aead064fbef4c825030e">piCout</a> &lt;&lt; eval.<a class="code" href="class_p_i_evaluator.html#ac9a0a4fd65af2518d8efdaa9c5298991">expression</a>() &lt;&lt; <span class="stringliteral">&quot;=&quot;</span> &lt;&lt; eval.<a class="code" href="class_p_i_evaluator.html#abc6012ab974a16f99b08cc2773142b79">evaluate</a>();</div>
<div class="line"><span class="comment">// 10*x = (-20; 0)</span></div>
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<div class="fragment"><div class="line"><a class="code" href="class_p_i_evaluator.html">PIEvaluator</a> eval;</div><div class="line"></div><div class="line">eval.<a class="code" href="class_p_i_evaluator.html#a1eae7848dc5d9d740a18acf4538ec34f">check</a>(<span class="stringliteral">&quot;e2eelge&quot;</span>);</div><div class="line"></div><div class="line"><a class="code" href="picout_8h.html#ad21862cbba89aead064fbef4c825030e">piCout</a> &lt;&lt; eval.<a class="code" href="class_p_i_evaluator.html#a61c693ab0a6f20d9d7c2051154c27d32">expression</a>() &lt;&lt; <span class="stringliteral">&quot;=&quot;</span> &lt;&lt; eval.<a class="code" href="class_p_i_evaluator.html#abc6012ab974a16f99b08cc2773142b79">evaluate</a>();</div><div class="line"><span class="comment">// e*2*e*e*lg(e) = (17.4461; 0)</span></div><div class="line"></div><div class="line">eval.<a class="code" href="class_p_i_evaluator.html#a1eae7848dc5d9d740a18acf4538ec34f">check</a>(<span class="stringliteral">&quot;10x&quot;</span>);</div><div class="line"></div><div class="line"><a class="code" href="picout_8h.html#ad21862cbba89aead064fbef4c825030e">piCout</a> &lt;&lt; eval.<a class="code" href="class_p_i_evaluator.html#a5a382efc32bff7a5249afa6beddb8f50">error</a>() &lt;&lt; eval.<a class="code" href="class_p_i_evaluator.html#aa48a9b0cd74da5f40eacef791deeb4c2">unknownVariables</a>();</div><div class="line"><span class="comment">// Unknown variables: &quot;x&quot; {&quot;x&quot;}</span></div><div class="line"></div><div class="line">eval.<a class="code" href="class_p_i_evaluator.html#a066713e986ccf0abbdffc1dd4ab8a487">setVariable</a>(<span class="stringliteral">&quot;x&quot;</span>, complexd(1, 2));</div><div class="line">eval.<a class="code" href="class_p_i_evaluator.html#a1eae7848dc5d9d740a18acf4538ec34f">check</a>(<span class="stringliteral">&quot;10x&quot;</span>);</div><div class="line"></div><div class="line"><a class="code" href="picout_8h.html#ad21862cbba89aead064fbef4c825030e">piCout</a> &lt;&lt; eval.<a class="code" href="class_p_i_evaluator.html#a5a382efc32bff7a5249afa6beddb8f50">error</a>() &lt;&lt; eval.<a class="code" href="class_p_i_evaluator.html#aa48a9b0cd74da5f40eacef791deeb4c2">unknownVariables</a>();</div><div class="line"><span class="comment">// Correct {}</span></div><div class="line"></div><div class="line"><a class="code" href="picout_8h.html#ad21862cbba89aead064fbef4c825030e">piCout</a> &lt;&lt; eval.<a class="code" href="class_p_i_evaluator.html#a61c693ab0a6f20d9d7c2051154c27d32">expression</a>() &lt;&lt; <span class="stringliteral">&quot;=&quot;</span> &lt;&lt; eval.<a class="code" href="class_p_i_evaluator.html#abc6012ab974a16f99b08cc2773142b79">evaluate</a>();</div><div class="line"><span class="comment">// 10*x = (10; 20)</span></div><div class="line"></div><div class="line">eval.<a class="code" href="class_p_i_evaluator.html#a066713e986ccf0abbdffc1dd4ab8a487">setVariable</a>(<span class="stringliteral">&quot;x&quot;</span>, complexd(-2, 0));</div><div class="line"></div><div class="line"><a class="code" href="picout_8h.html#ad21862cbba89aead064fbef4c825030e">piCout</a> &lt;&lt; eval.<a class="code" href="class_p_i_evaluator.html#a61c693ab0a6f20d9d7c2051154c27d32">expression</a>() &lt;&lt; <span class="stringliteral">&quot;=&quot;</span> &lt;&lt; eval.<a class="code" href="class_p_i_evaluator.html#abc6012ab974a16f99b08cc2773142b79">evaluate</a>();</div><div class="line"><span class="comment">// 10*x = (-20; 0)</span></div></div><!-- fragment --></div></div><!-- contents -->
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