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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<title>libqalculate-0.9.6: UnknownVariable Class Reference</title>
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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>
<p>Inheritance diagram for UnknownVariable:
<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>
<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#a0">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#a1">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#a2">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="a4"></a><!-- doxytag: member=<UnknownVariable::copy> ref=<a4> 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="a5"></a><!-- doxytag: member=<UnknownVariable::set> ref=<a5> 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#a6">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#a7">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#a8">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#a9">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#a10">representsPositive</a> (bool=false)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="a11"></a><!-- doxytag: member=<UnknownVariable::representsNegative> ref=<a11> 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="a12"></a><!-- doxytag: member=<UnknownVariable::representsNonNegative> ref=<a12> 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="a13"></a><!-- doxytag: member=<UnknownVariable::representsNonPositive> ref=<a13> 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="a14"></a><!-- doxytag: member=<UnknownVariable::representsInteger> ref=<a14> 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="a15"></a><!-- doxytag: member=<UnknownVariable::representsNumber> ref=<a15> 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="a16"></a><!-- doxytag: member=<UnknownVariable::representsRational> ref=<a16> 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="a17"></a><!-- doxytag: member=<UnknownVariable::representsReal> ref=<a17> 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="a18"></a><!-- doxytag: member=<UnknownVariable::representsComplex> ref=<a18> 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="a19"></a><!-- doxytag: member=<UnknownVariable::representsNonZero> ref=<a19> 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="a20"></a><!-- doxytag: member=<UnknownVariable::representsNonMatrix> ref=<a20> 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="p0"></a><!-- doxytag: member=<UnknownVariable::o_assumption> ref=<p0> 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.
<p>
<hr><h2>Constructor & Destructor Documentation</h2>
<a class="anchor" name="a0"></a><!-- doxytag: member=<UnknownVariable::UnknownVariable> ref=<a0> args=<(string cat_, string name_, string title_="", bool is_local=true, bool is_builtin=false, bool is_active=true)> --><p>
<table class="mdTable" cellpadding="2" cellspacing="0">
<tr>
<td class="mdRow">
<table cellpadding="0" cellspacing="0" border="0">
<tr>
<td class="md" nowrap valign="top">UnknownVariable::UnknownVariable </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top">string </td>
<td class="mdname" nowrap> <em>cat_</em>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td class="md"></td>
<td class="md" nowrap>string </td>
<td class="mdname" nowrap> <em>name_</em>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td class="md"></td>
<td class="md" nowrap>string </td>
<td class="mdname" nowrap> <em>title_</em> = <code>""</code>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td class="md"></td>
<td class="md" nowrap>bool </td>
<td class="mdname" nowrap> <em>is_local</em> = <code>true</code>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td class="md"></td>
<td class="md" nowrap>bool </td>
<td class="mdname" nowrap> <em>is_builtin</em> = <code>false</code>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td class="md"></td>
<td class="md" nowrap>bool </td>
<td class="mdname" nowrap> <em>is_active</em> = <code>true</code></td>
</tr>
<tr>
<td class="md"></td>
<td class="md">) </td>
<td class="md" colspan="2"></td>
</tr>
</table>
</td>
</tr>
</table>
<table cellspacing="5" cellpadding="0" border="0">
<tr>
<td>
</td>
<td>
<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>
</td>
</tr>
</table>
<a class="anchor" name="a1"></a><!-- doxytag: member=<UnknownVariable::UnknownVariable> ref=<a1> args=<()> --><p>
<table class="mdTable" cellpadding="2" cellspacing="0">
<tr>
<td class="mdRow">
<table cellpadding="0" cellspacing="0" border="0">
<tr>
<td class="md" nowrap valign="top">UnknownVariable::UnknownVariable </td>
<td class="md" valign="top">( </td>
<td class="mdname1" valign="top" nowrap> </td>
<td class="md" valign="top"> ) </td>
<td class="md" nowrap></td>
</tr>
</table>
</td>
</tr>
</table>
<table cellspacing="5" cellpadding="0" border="0">
<tr>
<td>
</td>
<td>
<p>
Create an empty unknown variable. </td>
</tr>
</table>
<a class="anchor" name="a2"></a><!-- doxytag: member=<UnknownVariable::UnknownVariable> ref=<a2> args=<(const UnknownVariable *variable)> --><p>
<table class="mdTable" cellpadding="2" cellspacing="0">
<tr>
<td class="mdRow">
<table cellpadding="0" cellspacing="0" border="0">
<tr>
<td class="md" nowrap valign="top">UnknownVariable::UnknownVariable </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top">const <a class="el" href="classUnknownVariable.html">UnknownVariable</a> * </td>
<td class="mdname1" valign="top" nowrap> <em>variable</em> </td>
<td class="md" valign="top"> ) </td>
<td class="md" nowrap></td>
</tr>
</table>
</td>
</tr>
</table>
<table cellspacing="5" cellpadding="0" border="0">
<tr>
<td>
</td>
<td>
<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>
</td>
</tr>
</table>
<hr><h2>Member Function Documentation</h2>
<a class="anchor" name="a8"></a><!-- doxytag: member=<UnknownVariable::assumptions> ref=<a8> args=<()> --><p>
<table class="mdTable" cellpadding="2" cellspacing="0">
<tr>
<td class="mdRow">
<table cellpadding="0" cellspacing="0" border="0">
<tr>
<td class="md" nowrap valign="top"><a class="el" href="classAssumptions.html">Assumptions</a>* UnknownVariable::assumptions </td>
<td class="md" valign="top">( </td>
<td class="mdname1" valign="top" nowrap> </td>
<td class="md" valign="top"> ) </td>
<td class="md" nowrap></td>
</tr>
</table>
</td>
</tr>
</table>
<table cellspacing="5" cellpadding="0" border="0">
<tr>
<td>
</td>
<td>
<p>
Returns the assumptions of the unknown variable.<p>
<dl compact><dt><b>Returns:</b></dt><dd><a class="el" href="classAssumptions.html">Assumptions</a> of the unknown variable.</dd></dl>
</td>
</tr>
</table>
<a class="anchor" name="a6"></a><!-- doxytag: member=<UnknownVariable::isKnown> ref=<a6> args=<() const > --><p>
<table class="mdTable" cellpadding="2" cellspacing="0">
<tr>
<td class="mdRow">
<table cellpadding="0" cellspacing="0" border="0">
<tr>
<td class="md" nowrap valign="top">bool UnknownVariable::isKnown </td>
<td class="md" valign="top">( </td>
<td class="mdname1" valign="top" nowrap> </td>
<td class="md" valign="top"> ) </td>
<td class="md" nowrap> const<code> [inline, virtual]</code></td>
</tr>
</table>
</td>
</tr>
</table>
<table cellspacing="5" cellpadding="0" border="0">
<tr>
<td>
</td>
<td>
<p>
Returns if the variable has a known value (as oppossed to assumptions).<p>
<dl compact><dt><b>Returns:</b></dt><dd>true if the variable is of class <a class="el" href="classKnownVariable.html">KnownVariable</a>, false if UnknownVariable.</dd></dl>
<p>
Implements <a class="el" href="classVariable.html#a8">Variable</a>. </td>
</tr>
</table>
<a class="anchor" name="a10"></a><!-- doxytag: member=<UnknownVariable::representsPositive> ref=<a10> args=<(bool=false)> --><p>
<table class="mdTable" cellpadding="2" cellspacing="0">
<tr>
<td class="mdRow">
<table cellpadding="0" cellspacing="0" border="0">
<tr>
<td class="md" nowrap valign="top">virtual bool UnknownVariable::representsPositive </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top">bool </td>
<td class="mdname1" valign="top" nowrap> = <code>false</code> </td>
<td class="md" valign="top"> ) </td>
<td class="md" nowrap><code> [virtual]</code></td>
</tr>
</table>
</td>
</tr>
</table>
<table cellspacing="5" cellpadding="0" border="0">
<tr>
<td>
</td>
<td>
<p>
Returns if the variable represents a positive value.
<p>
Reimplemented from <a class="el" href="classVariable.html#a9">Variable</a>. </td>
</tr>
</table>
<a class="anchor" name="a7"></a><!-- doxytag: member=<UnknownVariable::setAssumptions> ref=<a7> args=<(Assumptions *ass)> --><p>
<table class="mdTable" cellpadding="2" cellspacing="0">
<tr>
<td class="mdRow">
<table cellpadding="0" cellspacing="0" border="0">
<tr>
<td class="md" nowrap valign="top">void UnknownVariable::setAssumptions </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top"><a class="el" href="classAssumptions.html">Assumptions</a> * </td>
<td class="mdname1" valign="top" nowrap> <em>ass</em> </td>
<td class="md" valign="top"> ) </td>
<td class="md" nowrap></td>
</tr>
</table>
</td>
</tr>
</table>
<table cellspacing="5" cellpadding="0" border="0">
<tr>
<td>
</td>
<td>
<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">Assumptions</a>.</td></tr>
</table>
</dl>
</td>
</tr>
</table>
<a class="anchor" name="a9"></a><!-- doxytag: member=<UnknownVariable::subtype> ref=<a9> args=<() const > --><p>
<table class="mdTable" cellpadding="2" cellspacing="0">
<tr>
<td class="mdRow">
<table cellpadding="0" cellspacing="0" border="0">
<tr>
<td class="md" nowrap valign="top">int UnknownVariable::subtype </td>
<td class="md" valign="top">( </td>
<td class="mdname1" valign="top" nowrap> </td>
<td class="md" valign="top"> ) </td>
<td class="md" nowrap> const<code> [inline, virtual]</code></td>
</tr>
</table>
</td>
</tr>
</table>
<table cellspacing="5" cellpadding="0" border="0">
<tr>
<td>
</td>
<td>
<p>
Returns the subtype of the variable, corresponding to which subsubclass the object belongs to.<p>
<dl compact><dt><b>Returns:</b></dt><dd><a class="el" href="Variable_8h.html#a19">VariableSubtype</a>.</dd></dl>
<p>
Reimplemented from <a class="el" href="classVariable.html#a7">Variable</a>. </td>
</tr>
</table>
<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>
<hr size="1"><address style="align: right;"><small>
Generated on 17 Jun 2007 for libqalculate-0.9.6 by <a href="http://www.doxygen.org/index.html"><img src="doxygen.png" alt="doxygen" align="middle" border="0"></a> 1.4.3</small></address>
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