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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<title>libqalculate-0.9.6: CompositeUnit Class Reference</title>
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<h1>CompositeUnit Class Reference</h1><!-- doxytag: class=<CompositeUnit> --><!-- doxytag: inherits=<Unit> -->A unit consisting of a number of other units.
<a href="#_details">More...</a>
<p>
<code>#include <Unit.h></code>
<p>
<p>Inheritance diagram for CompositeUnit:
<p><center><img src="classCompositeUnit.png" usemap="#CompositeUnit_map" border="0" alt=""></center>
<map name="CompositeUnit_map">
<area href="classUnit.html" alt="Unit" shape="rect" coords="0,56,96,80">
<area href="classExpressionItem.html" alt="ExpressionItem" shape="rect" coords="0,0,96,24">
</map>
<a href="classCompositeUnit-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"><a class="anchor" name="a0"></a><!-- doxytag: member=<CompositeUnit::CompositeUnit> ref=<a0> args=<(string cat_, string name_, string title_="", string base_expression_="", bool is_local=true, bool is_builtin=false, bool is_active=true)> -->
</td><td class="memItemRight" valign="bottom"><b>CompositeUnit</b> (string cat_, string name_, string title_="", string base_expression_="", bool is_local=true, bool is_builtin=false, bool is_active=true)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="a1"></a><!-- doxytag: member=<CompositeUnit::CompositeUnit> ref=<a1> args=<(const CompositeUnit *unit)> -->
</td><td class="memItemRight" valign="bottom"><b>CompositeUnit</b> (const <a class="el" href="classCompositeUnit.html">CompositeUnit</a> *unit)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="a3"></a><!-- doxytag: member=<CompositeUnit::copy> ref=<a3> 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="a4"></a><!-- doxytag: member=<CompositeUnit::set> ref=<a4> 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">virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="classCompositeUnit.html#a5">add</a> (<a class="el" href="classUnit.html">Unit</a> *u, int exp=1, <a class="el" href="classPrefix.html">Prefix</a> *prefix=NULL)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">virtual <a class="el" href="classUnit.html">Unit</a> * </td><td class="memItemRight" valign="bottom"><a class="el" href="classCompositeUnit.html#a6">get</a> (size_t index, int *exp=NULL, <a class="el" href="classPrefix.html">Prefix</a> **prefix=NULL) const </td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="a7"></a><!-- doxytag: member=<CompositeUnit::setExponent> ref=<a7> args=<(size_t index, int exp)> -->
virtual void </td><td class="memItemRight" valign="bottom"><b>setExponent</b> (size_t index, int exp)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="a8"></a><!-- doxytag: member=<CompositeUnit::setPrefix> ref=<a8> args=<(size_t index, Prefix *prefix)> -->
virtual void </td><td class="memItemRight" valign="bottom"><b>setPrefix</b> (size_t index, <a class="el" href="classPrefix.html">Prefix</a> *prefix)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">virtual size_t </td><td class="memItemRight" valign="bottom"><a class="el" href="classCompositeUnit.html#a9">countUnits</a> () const </td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="a10"></a><!-- doxytag: member=<CompositeUnit::find> ref=<a10> args=<(Unit *u) const > -->
virtual size_t </td><td class="memItemRight" valign="bottom"><b>find</b> (<a class="el" href="classUnit.html">Unit</a> *u) const </td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="a11"></a><!-- doxytag: member=<CompositeUnit::del> ref=<a11> args=<(size_t index)> -->
virtual void </td><td class="memItemRight" valign="bottom"><b>del</b> (size_t index)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">virtual string </td><td class="memItemRight" valign="bottom"><a class="el" href="classCompositeUnit.html#a12">print</a> (bool plural_, bool short_, bool use_unicode=false, bool(*can_display_unicode_string_function)(const char *, void *)=NULL, void *can_display_unicode_string_arg=NULL) const </td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">virtual int </td><td class="memItemRight" valign="bottom"><a class="el" href="classCompositeUnit.html#a13">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="classCompositeUnit.html#a14">containsRelativeTo</a> (<a class="el" href="classUnit.html">Unit</a> *u) const </td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">virtual <a class="el" href="classMathStructure.html">MathStructure</a> </td><td class="memItemRight" valign="bottom"><a class="el" href="classCompositeUnit.html#a15">generateMathStructure</a> (bool make_division=false) const </td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="a16"></a><!-- doxytag: member=<CompositeUnit::setBaseExpression> ref=<a16> args=<(string base_expression_)> -->
virtual void </td><td class="memItemRight" valign="bottom"><b>setBaseExpression</b> (string base_expression_)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">virtual void </td><td class="memItemRight" valign="bottom"><a class="el" href="classCompositeUnit.html#a17">clear</a> ()</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=<CompositeUnit::sshort> ref=<p0> args=<> -->
string </td><td class="memItemRight" valign="bottom"><b>sshort</b></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="p1"></a><!-- doxytag: member=<CompositeUnit::units> ref=<p1> args=<> -->
vector< <a class="el" href="classAliasUnit__Composite.html">AliasUnit_Composite</a> * > </td><td class="memItemRight" valign="bottom"><b>units</b></td></tr>
</table>
<hr><a name="_details"></a><h2>Detailed Description</h2>
A unit consisting of a number of other units.
<p>
Composite units are defined by a unit expression with multiple units. Composite units often have an alias unit associated with them, as they do not have a reference name on their own. For example, a joule is defined as an alias defined in relation to a composite unit defined as "Newton * meter".<p>
The names of composite units is only used to reference the unit in definitions of other units. They can not be used in expressions.<p>
Composite units is definited as a composition of units. The units, with prefixes and exponents, can either be added one by one with <a class="el" href="classCompositeUnit.html#a5">add()</a> or parsed from an expression (ex. "cm^3/g) with setBaseExpression().
<p>
<hr><h2>Member Function Documentation</h2>
<a class="anchor" name="a5"></a><!-- doxytag: member=<CompositeUnit::add> ref=<a5> args=<(Unit *u, int exp=1, Prefix *prefix=NULL)> --><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 void CompositeUnit::add </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top"><a class="el" href="classUnit.html">Unit</a> * </td>
<td class="mdname" nowrap> <em>u</em>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td class="md"></td>
<td class="md" nowrap>int </td>
<td class="mdname" nowrap> <em>exp</em> = <code>1</code>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td class="md"></td>
<td class="md" nowrap><a class="el" href="classPrefix.html">Prefix</a> * </td>
<td class="mdname" nowrap> <em>prefix</em> = <code>NULL</code></td>
</tr>
<tr>
<td class="md"></td>
<td class="md">) </td>
<td class="md" colspan="2"><code> [virtual]</code></td>
</tr>
</table>
</td>
</tr>
</table>
<table cellspacing="5" cellpadding="0" border="0">
<tr>
<td>
</td>
<td>
<p>
Adds a sub/base unit with specified exponent and an optional prefix.<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>u</em> </td><td><a class="el" href="classUnit.html">Unit</a>. </td></tr>
<tr><td valign="top"></td><td valign="top"><em>exp</em> </td><td>Exponent. </td></tr>
<tr><td valign="top"></td><td valign="top"><em>prefix</em> </td><td><a class="el" href="classPrefix.html">Prefix</a>.</td></tr>
</table>
</dl>
</td>
</tr>
</table>
<a class="anchor" name="a17"></a><!-- doxytag: member=<CompositeUnit::clear> ref=<a17> 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">virtual void CompositeUnit::clear </td>
<td class="md" valign="top">( </td>
<td class="mdname1" valign="top" nowrap> </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>
Removes all sub/base units. </td>
</tr>
</table>
<a class="anchor" name="a14"></a><!-- doxytag: member=<CompositeUnit::containsRelativeTo> ref=<a14> args=<(Unit *u) 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">virtual bool CompositeUnit::containsRelativeTo </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top"><a class="el" href="classUnit.html">Unit</a> * </td>
<td class="mdname1" valign="top" nowrap> <em>u</em> </td>
<td class="md" valign="top"> ) </td>
<td class="md" nowrap> const<code> [virtual]</code></td>
</tr>
</table>
</td>
</tr>
</table>
<table cellspacing="5" cellpadding="0" border="0">
<tr>
<td>
</td>
<td>
<p>
If this unit contains a sub/base unit with a relation to the specified unit. </td>
</tr>
</table>
<a class="anchor" name="a9"></a><!-- doxytag: member=<CompositeUnit::countUnits> 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">virtual size_t CompositeUnit::countUnits </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> [virtual]</code></td>
</tr>
</table>
</td>
</tr>
</table>
<table cellspacing="5" cellpadding="0" border="0">
<tr>
<td>
</td>
<td>
<p>
Returns the number of sub/base units </td>
</tr>
</table>
<a class="anchor" name="a15"></a><!-- doxytag: member=<CompositeUnit::generateMathStructure> ref=<a15> args=<(bool make_division=false) 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">virtual <a class="el" href="classMathStructure.html">MathStructure</a> CompositeUnit::generateMathStructure </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top">bool </td>
<td class="mdname1" valign="top" nowrap> <em>make_division</em> = <code>false</code> </td>
<td class="md" valign="top"> ) </td>
<td class="md" nowrap> const<code> [virtual]</code></td>
</tr>
</table>
</td>
</tr>
</table>
<table cellspacing="5" cellpadding="0" border="0">
<tr>
<td>
</td>
<td>
<p>
Creates a <a class="el" href="classMathStructure.html">MathStructure</a> with the sub/base units of the unit. </td>
</tr>
</table>
<a class="anchor" name="a6"></a><!-- doxytag: member=<CompositeUnit::get> ref=<a6> args=<(size_t index, int *exp=NULL, Prefix **prefix=NULL) 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">virtual <a class="el" href="classUnit.html">Unit</a>* CompositeUnit::get </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top">size_t </td>
<td class="mdname" nowrap> <em>index</em>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td class="md"></td>
<td class="md" nowrap>int * </td>
<td class="mdname" nowrap> <em>exp</em> = <code>NULL</code>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td class="md"></td>
<td class="md" nowrap><a class="el" href="classPrefix.html">Prefix</a> ** </td>
<td class="mdname" nowrap> <em>prefix</em> = <code>NULL</code></td>
</tr>
<tr>
<td class="md"></td>
<td class="md">) </td>
<td class="md" colspan="2"> const<code> [virtual]</code></td>
</tr>
</table>
</td>
</tr>
</table>
<table cellspacing="5" cellpadding="0" border="0">
<tr>
<td>
</td>
<td>
<p>
Retrieves information about a sub/base unit<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>index</em> </td><td>Index starting at 1. </td></tr>
<tr><td valign="top"><tt>[out]</tt> </td><td valign="top"><em>exp</em> </td><td>Exponent. </td></tr>
<tr><td valign="top"><tt>[out]</tt> </td><td valign="top"><em>prefix</em> </td><td><a class="el" href="classPrefix.html">Prefix</a>. </td></tr>
</table>
</dl>
<dl compact><dt><b>Returns:</b></dt><dd>Sub/base unit (AliasUnit_Composite::firstBaseUnit()).</dd></dl>
</td>
</tr>
</table>
<a class="anchor" name="a12"></a><!-- doxytag: member=<CompositeUnit::print> ref=<a12> args=<(bool plural_, bool short_, bool use_unicode=false, bool(*can_display_unicode_string_function)(const char *, void *)=NULL, void *can_display_unicode_string_arg=NULL) 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">virtual string CompositeUnit::print </td>
<td class="md" valign="top">( </td>
<td class="md" nowrap valign="top">bool </td>
<td class="mdname" nowrap> <em>plural_</em>, </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>short_</em>, </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>use_unicode</em> = <code>false</code>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td class="md"></td>
<td class="md" nowrap>bool(*)(const char *, void *) </td>
<td class="mdname" nowrap> <em>can_display_unicode_string_function</em> = <code>NULL</code>, </td>
</tr>
<tr>
<td class="md" nowrap align="right"></td>
<td class="md"></td>
<td class="md" nowrap>void * </td>
<td class="mdname" nowrap> <em>can_display_unicode_string_arg</em> = <code>NULL</code></td>
</tr>
<tr>
<td class="md"></td>
<td class="md">) </td>
<td class="md" colspan="2"> const<code> [virtual]</code></td>
</tr>
</table>
</td>
</tr>
</table>
<table cellspacing="5" cellpadding="0" border="0">
<tr>
<td>
</td>
<td>
<p>
Prints out the sub/base units with prefixes and exponents. This is the representation of the unit in expressions.
<p>
Reimplemented from <a class="el" href="classUnit.html#a11">Unit</a>. </td>
</tr>
</table>
<a class="anchor" name="a13"></a><!-- doxytag: member=<CompositeUnit::subtype> ref=<a13> 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">virtual int CompositeUnit::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> [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 unit, corresponding to which subsubclass the object belongs to.<p>
<dl compact><dt><b>Returns:</b></dt><dd><a class="el" href="Unit_8h.html#a3">UnitSubtype</a>.</dd></dl>
<p>
Reimplemented from <a class="el" href="classUnit.html#a25">Unit</a>. </td>
</tr>
</table>
<hr>The documentation for this class was generated from the following file:<ul>
<li>libqalculate/<a class="el" href="Unit_8h.html">Unit.h</a></ul>
<hr size="1"><address style="align: right;"><small>
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