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<h1>UnknownVariable Class Reference</h1><!-- doxytag: class="UnknownVariable" --><!-- doxytag: inherits="Variable" -->A variable with unknown value.
<a href="#_details">More...</a>
<p>
<code>#include <Variable.h></code>
<p>
<div class="dynheader">
Inheritance diagram for UnknownVariable:</div>
<div class="dynsection">
<p><center><img src="classUnknownVariable.png" usemap="#UnknownVariable_map" border="0" alt=""></center>
<map name="UnknownVariable_map">
<area href="classVariable.html" alt="Variable" shape="rect" coords="0,56,111,80">
<area href="classExpressionItem.html" alt="ExpressionItem" shape="rect" coords="0,0,111,24">
</map>
</div>
<p>
<a href="classUnknownVariable-members.html">List of all members.</a><table border="0" cellpadding="0" cellspacing="0">
<tr><td></td></tr>
<tr><td colspan="2"><br><h2>Public Member Functions</h2></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="classUnknownVariable.html#0e35fe3eb8e8b373bf1b21fdffebc79f">UnknownVariable</a> (string cat_, string name_, string title_="", bool is_local=true, bool is_builtin=false, bool is_active=true)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="classUnknownVariable.html#092241f8591e40712e1e514723f20b14">UnknownVariable</a> ()</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"> </td><td class="memItemRight" valign="bottom"><a class="el" href="classUnknownVariable.html#39a43b0a4f152df0462b5154e775eb8d">UnknownVariable</a> (const <a class="el" href="classUnknownVariable.html">UnknownVariable</a> *variable)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="ccd775cf93454af9d2a7655a93585534"></a><!-- doxytag: member="UnknownVariable::copy" ref="ccd775cf93454af9d2a7655a93585534" args="() const " -->
virtual <a class="el" href="classExpressionItem.html">ExpressionItem</a> * </td><td class="memItemRight" valign="bottom"><b>copy</b> () const </td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="3d030e5420027b86ea3e2d9fb6e7b61b"></a><!-- doxytag: member="UnknownVariable::set" ref="3d030e5420027b86ea3e2d9fb6e7b61b" args="(const ExpressionItem *item)" -->
virtual void </td><td class="memItemRight" valign="bottom"><b>set</b> (const <a class="el" href="classExpressionItem.html">ExpressionItem</a> *item)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">bool </td><td class="memItemRight" valign="bottom"><a class="el" href="classUnknownVariable.html#11e4842430f445c8fce65396929bd8e2">isKnown</a> () const </td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classUnknownVariable.html#063cdf5cbcf07ab3e4d7b09e3d0d7001">setAssumptions</a> (<a class="el" href="classAssumptions.html">Assumptions</a> *ass)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="el" href="classAssumptions.html">Assumptions</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="classUnknownVariable.html#4fe08897f289f1a82915b00b3a23e4f6">assumptions</a> ()</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">int </td><td class="memItemRight" valign="bottom"><a class="el" href="classUnknownVariable.html#946ed345fa92c88eb05395bf37542855">subtype</a> () const </td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">virtual bool </td><td class="memItemRight" valign="bottom"><a class="el" href="classUnknownVariable.html#0adc38fa4c8c6e515eee63a2a737ebe2">representsPositive</a> (bool=false)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="2743c20fa772196275000126395b1791"></a><!-- doxytag: member="UnknownVariable::representsNegative" ref="2743c20fa772196275000126395b1791" args="(bool=false)" -->
virtual bool </td><td class="memItemRight" valign="bottom"><b>representsNegative</b> (bool=false)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="6eedda5dfbd0d80ac0fc1831ba7d0ba0"></a><!-- doxytag: member="UnknownVariable::representsNonNegative" ref="6eedda5dfbd0d80ac0fc1831ba7d0ba0" args="(bool=false)" -->
virtual bool </td><td class="memItemRight" valign="bottom"><b>representsNonNegative</b> (bool=false)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="477ea79f1bfcf8e2fd8f069617ab67cf"></a><!-- doxytag: member="UnknownVariable::representsNonPositive" ref="477ea79f1bfcf8e2fd8f069617ab67cf" args="(bool=false)" -->
virtual bool </td><td class="memItemRight" valign="bottom"><b>representsNonPositive</b> (bool=false)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="e3021c47b727e1ef3093a1a2f90edafb"></a><!-- doxytag: member="UnknownVariable::representsInteger" ref="e3021c47b727e1ef3093a1a2f90edafb" args="(bool=false)" -->
virtual bool </td><td class="memItemRight" valign="bottom"><b>representsInteger</b> (bool=false)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="013cbb1e1f9be78c79c3d080587e492d"></a><!-- doxytag: member="UnknownVariable::representsNumber" ref="013cbb1e1f9be78c79c3d080587e492d" args="(bool=false)" -->
virtual bool </td><td class="memItemRight" valign="bottom"><b>representsNumber</b> (bool=false)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="b7365b51b9b9667839a9bd4313ce6ae1"></a><!-- doxytag: member="UnknownVariable::representsRational" ref="b7365b51b9b9667839a9bd4313ce6ae1" args="(bool=false)" -->
virtual bool </td><td class="memItemRight" valign="bottom"><b>representsRational</b> (bool=false)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="b4141d32af441f32510e9254bb95c6c1"></a><!-- doxytag: member="UnknownVariable::representsReal" ref="b4141d32af441f32510e9254bb95c6c1" args="(bool=false)" -->
virtual bool </td><td class="memItemRight" valign="bottom"><b>representsReal</b> (bool=false)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="374a211f5bd6a9ab8a4f81e40d6b5eb2"></a><!-- doxytag: member="UnknownVariable::representsComplex" ref="374a211f5bd6a9ab8a4f81e40d6b5eb2" args="(bool=false)" -->
virtual bool </td><td class="memItemRight" valign="bottom"><b>representsComplex</b> (bool=false)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="d2ee4bff75143df26968021fbcf7d89f"></a><!-- doxytag: member="UnknownVariable::representsNonZero" ref="d2ee4bff75143df26968021fbcf7d89f" args="(bool=false)" -->
virtual bool </td><td class="memItemRight" valign="bottom"><b>representsNonZero</b> (bool=false)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="8a5d325f9e7f27744f8154d79129e81b"></a><!-- doxytag: member="UnknownVariable::representsNonMatrix" ref="8a5d325f9e7f27744f8154d79129e81b" args="()" -->
virtual bool </td><td class="memItemRight" valign="bottom"><b>representsNonMatrix</b> ()</td></tr>
<tr><td colspan="2"><br><h2>Protected Attributes</h2></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="2c0004f182acdcbad99ee2997dff8a7f"></a><!-- doxytag: member="UnknownVariable::o_assumption" ref="2c0004f182acdcbad99ee2997dff8a7f" args="" -->
<a class="el" href="classAssumptions.html">Assumptions</a> * </td><td class="memItemRight" valign="bottom"><b>o_assumption</b></td></tr>
</table>
<hr><a name="_details"></a><h2>Detailed Description</h2>
A variable with unknown value.
<p>
Unknown variables have an associated assumption object. <hr><h2>Constructor & Destructor Documentation</h2>
<a class="anchor" name="0e35fe3eb8e8b373bf1b21fdffebc79f"></a><!-- doxytag: member="UnknownVariable::UnknownVariable" ref="0e35fe3eb8e8b373bf1b21fdffebc79f" args="(string cat_, string name_, string title_="", bool is_local=true, bool is_builtin=false, bool is_active=true)" -->
<div class="memitem">
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<td class="memname">UnknownVariable::UnknownVariable </td>
<td>(</td>
<td class="paramtype">string </td>
<td class="paramname"> <em>cat_</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">string </td>
<td class="paramname"> <em>name_</em>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">string </td>
<td class="paramname"> <em>title_</em> = <code>""</code>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">bool </td>
<td class="paramname"> <em>is_local</em> = <code>true</code>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">bool </td>
<td class="paramname"> <em>is_builtin</em> = <code>false</code>, </td>
</tr>
<tr>
<td class="paramkey"></td>
<td></td>
<td class="paramtype">bool </td>
<td class="paramname"> <em>is_active</em> = <code>true</code></td><td> </td>
</tr>
<tr>
<td></td>
<td>)</td>
<td></td><td></td><td width="100%"></td>
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<p>
Create an unknown.<p>
<dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>cat_</em> </td><td>Category that the variable belongs to. </td></tr>
<tr><td valign="top"></td><td valign="top"><em>name_</em> </td><td>Initial name of the variable. </td></tr>
<tr><td valign="top"></td><td valign="top"><em>title_</em> </td><td>Descriptive name. </td></tr>
<tr><td valign="top"></td><td valign="top"><em>is_local</em> </td><td>If the variable is local/user-defined or global. </td></tr>
<tr><td valign="top"></td><td valign="top"><em>is_builtin</em> </td><td>If the variable is builtin and not modifiable. </td></tr>
<tr><td valign="top"></td><td valign="top"><em>is_active</em> </td><td>If the variable is active and can be used in expressions. </td></tr>
</table>
</dl>
</div>
</div><p>
<a class="anchor" name="092241f8591e40712e1e514723f20b14"></a><!-- doxytag: member="UnknownVariable::UnknownVariable" ref="092241f8591e40712e1e514723f20b14" args="()" -->
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<td class="memname">UnknownVariable::UnknownVariable </td>
<td>(</td>
<td class="paramname"> </td>
<td> ) </td>
<td width="100%"></td>
</tr>
</table>
</div>
<div class="memdoc">
<p>
Create an empty unknown variable.
</div>
</div><p>
<a class="anchor" name="39a43b0a4f152df0462b5154e775eb8d"></a><!-- doxytag: member="UnknownVariable::UnknownVariable" ref="39a43b0a4f152df0462b5154e775eb8d" args="(const UnknownVariable *variable)" -->
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<td class="memname">UnknownVariable::UnknownVariable </td>
<td>(</td>
<td class="paramtype">const <a class="el" href="classUnknownVariable.html">UnknownVariable</a> * </td>
<td class="paramname"> <em>variable</em> </td>
<td> ) </td>
<td width="100%"></td>
</tr>
</table>
</div>
<div class="memdoc">
<p>
Create a copy of an unknown variable.<p>
<dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>variable</em> </td><td>Unknown variable to copy. </td></tr>
</table>
</dl>
</div>
</div><p>
<hr><h2>Member Function Documentation</h2>
<a class="anchor" name="11e4842430f445c8fce65396929bd8e2"></a><!-- doxytag: member="UnknownVariable::isKnown" ref="11e4842430f445c8fce65396929bd8e2" args="() const " -->
<div class="memitem">
<div class="memproto">
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<td class="memname">bool UnknownVariable::isKnown </td>
<td>(</td>
<td class="paramname"> </td>
<td> ) </td>
<td width="100%"> const<code> [inline, virtual]</code></td>
</tr>
</table>
</div>
<div class="memdoc">
<p>
Returns if the variable has a known value (as oppossed to assumptions).<p>
<dl class="return" compact><dt><b>Returns:</b></dt><dd>true if the variable is of class <a class="el" href="classKnownVariable.html" title="A variable with a known value.">KnownVariable</a>, false if <a class="el" href="classUnknownVariable.html" title="A variable with unknown value.">UnknownVariable</a>. </dd></dl>
<p>Implements <a class="el" href="classVariable.html#1d3615b28d01c5a84346a63a97b64316">Variable</a>.</p>
</div>
</div><p>
<a class="anchor" name="063cdf5cbcf07ab3e4d7b09e3d0d7001"></a><!-- doxytag: member="UnknownVariable::setAssumptions" ref="063cdf5cbcf07ab3e4d7b09e3d0d7001" args="(Assumptions *ass)" -->
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<td class="memname">void UnknownVariable::setAssumptions </td>
<td>(</td>
<td class="paramtype"><a class="el" href="classAssumptions.html">Assumptions</a> * </td>
<td class="paramname"> <em>ass</em> </td>
<td> ) </td>
<td width="100%"></td>
</tr>
</table>
</div>
<div class="memdoc">
<p>
Sets the assumptions of the unknown variable.<p>
<dl compact><dt><b>Parameters:</b></dt><dd>
<table border="0" cellspacing="2" cellpadding="0">
<tr><td valign="top"></td><td valign="top"><em>ass</em> </td><td><a class="el" href="classAssumptions.html" title="An assumption about an unknown mathematical value.">Assumptions</a>. </td></tr>
</table>
</dl>
</div>
</div><p>
<a class="anchor" name="4fe08897f289f1a82915b00b3a23e4f6"></a><!-- doxytag: member="UnknownVariable::assumptions" ref="4fe08897f289f1a82915b00b3a23e4f6" args="()" -->
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<td class="memname"><a class="el" href="classAssumptions.html">Assumptions</a>* UnknownVariable::assumptions </td>
<td>(</td>
<td class="paramname"> </td>
<td> ) </td>
<td width="100%"></td>
</tr>
</table>
</div>
<div class="memdoc">
<p>
Returns the assumptions of the unknown variable.<p>
<dl class="return" compact><dt><b>Returns:</b></dt><dd><a class="el" href="classAssumptions.html" title="An assumption about an unknown mathematical value.">Assumptions</a> of the unknown variable. </dd></dl>
</div>
</div><p>
<a class="anchor" name="946ed345fa92c88eb05395bf37542855"></a><!-- doxytag: member="UnknownVariable::subtype" ref="946ed345fa92c88eb05395bf37542855" args="() const " -->
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<td class="memname">int UnknownVariable::subtype </td>
<td>(</td>
<td class="paramname"> </td>
<td> ) </td>
<td width="100%"> const<code> [inline, virtual]</code></td>
</tr>
</table>
</div>
<div class="memdoc">
<p>
Returns the subtype of the variable, corresponding to which subsubclass the object belongs to.<p>
<dl class="return" compact><dt><b>Returns:</b></dt><dd><a class="el" href="Variable_8h.html#0f580b0f6ebc7c28d007d2ce18a78474" title="Type of variable.">VariableSubtype</a>. </dd></dl>
<p>Reimplemented from <a class="el" href="classVariable.html#3e6d81fe2467b8627b09af909e835742">Variable</a>.</p>
<p>References <a class="el" href="Variable_8h-source.html#l00066">SUBTYPE_UNKNOWN_VARIABLE</a>.</p>
</div>
</div><p>
<a class="anchor" name="0adc38fa4c8c6e515eee63a2a737ebe2"></a><!-- doxytag: member="UnknownVariable::representsPositive" ref="0adc38fa4c8c6e515eee63a2a737ebe2" args="(bool=false)" -->
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<td class="memname">virtual bool UnknownVariable::representsPositive </td>
<td>(</td>
<td class="paramtype">bool </td>
<td class="paramname"> = <code>false</code> </td>
<td> ) </td>
<td width="100%"><code> [virtual]</code></td>
</tr>
</table>
</div>
<div class="memdoc">
<p>
Returns if the variable represents a positive value.
<p>Reimplemented from <a class="el" href="classVariable.html#4b34b6e7e72601c7915613498ef69744">Variable</a>.</p>
</div>
</div><p>
<hr>The documentation for this class was generated from the following file:<ul>
<li>libqalculate/<a class="el" href="Variable_8h.html">Variable.h</a></ul>
</div>
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