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<li class="navelem"><a class="el" href="namespace_quant_lib.html">QuantLib</a></li><li class="navelem"><a class="el" href="class_quant_lib_1_1_term_structure.html">TermStructure</a></li>  </ul>
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<div class="title">TermStructure Class Reference<span class="mlabels"><span class="mlabel">abstract</span></span></div>  </div>
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<p>Basic term-structure functionality.  
 <a href="class_quant_lib_1_1_term_structure.html#details">More...</a></p>

<p><code>#include &lt;ql/termstructure.hpp&gt;</code></p>
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  <img id="dynsection-0-trigger" src="closed.png" alt="+"/> Inheritance diagram for TermStructure:</div>
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<center><span class="legend">[<a href="graph_legend.html">legend</a>]</span></center></div>
<table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-methods"></a>
Public Member Functions</h2></td></tr>
<tr><td colspan="2"><div class="groupHeader">Constructors</div></td></tr>
<tr><td colspan="2"><div class="groupText"><p>There are three ways in which a term structure can keep track of its reference date. The first is that such date is fixed; the second is that it is determined by advancing the current date of a given number of business days; and the third is that it is based on the reference date of some other structure.</p>
<p>In the first case, the constructor taking a date is to be used; the default implementation of <a class="el" href="class_quant_lib_1_1_term_structure.html#acd49fd0f9bfecc09e0d3461f16ec5d79" title="the date at which discount = 1.0 and/or variance = 0.0">referenceDate()</a> will then return such date. In the second case, the constructor taking a number of days and a calendar is to be used; <a class="el" href="class_quant_lib_1_1_term_structure.html#acd49fd0f9bfecc09e0d3461f16ec5d79" title="the date at which discount = 1.0 and/or variance = 0.0">referenceDate()</a> will return a date calculated based on the current evaluation date, and the term structure and its observers will be notified when the evaluation date changes. In the last case, the <a class="el" href="class_quant_lib_1_1_term_structure.html#acd49fd0f9bfecc09e0d3461f16ec5d79" title="the date at which discount = 1.0 and/or variance = 0.0">referenceDate()</a> method must be overridden in derived classes so that it fetches and return the appropriate date. </p>
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<tr class="memitem:a4a8e0f324391a12454f11f5f5d5e66e8"><td class="memItemLeft" align="right" valign="top">&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_quant_lib_1_1_term_structure.html#a4a8e0f324391a12454f11f5f5d5e66e8">TermStructure</a> (const <a class="el" href="class_quant_lib_1_1_day_counter.html">DayCounter</a> &amp;dc=<a class="el" href="class_quant_lib_1_1_day_counter.html">DayCounter</a>())</td></tr>
<tr class="memdesc:a4a8e0f324391a12454f11f5f5d5e66e8"><td class="mdescLeft">&#160;</td><td class="mdescRight">default constructor  <a href="class_quant_lib_1_1_term_structure.html#a4a8e0f324391a12454f11f5f5d5e66e8">More...</a><br /></td></tr>
<tr class="separator:a4a8e0f324391a12454f11f5f5d5e66e8"><td class="memSeparator" colspan="2">&#160;</td></tr>
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&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_quant_lib_1_1_term_structure.html#a44918f70ab345cad67a287d46641f20f">TermStructure</a> (const <a class="el" href="class_quant_lib_1_1_date.html">Date</a> &amp;<a class="el" href="class_quant_lib_1_1_term_structure.html#acd49fd0f9bfecc09e0d3461f16ec5d79">referenceDate</a>, const <a class="el" href="class_quant_lib_1_1_calendar.html">Calendar</a> &amp;<a class="el" href="class_quant_lib_1_1_term_structure.html#a38e235178eb0a7749c37a16d71f4762f">calendar</a>=<a class="el" href="class_quant_lib_1_1_calendar.html">Calendar</a>(), const <a class="el" href="class_quant_lib_1_1_day_counter.html">DayCounter</a> &amp;dc=<a class="el" href="class_quant_lib_1_1_day_counter.html">DayCounter</a>())</td></tr>
<tr class="memdesc:a44918f70ab345cad67a287d46641f20f"><td class="mdescLeft">&#160;</td><td class="mdescRight">initialize with a fixed reference date <br /></td></tr>
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<tr class="memitem:ab72309c6d49bd4b6dc5b9ed09b67c7b9"><td class="memItemLeft" align="right" valign="top"><a id="ab72309c6d49bd4b6dc5b9ed09b67c7b9"></a>
&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_quant_lib_1_1_term_structure.html#ab72309c6d49bd4b6dc5b9ed09b67c7b9">TermStructure</a> (<a class="el" href="group__types.html#ga7e529c39c477ba1f5a22264d93e8457a">Natural</a> <a class="el" href="class_quant_lib_1_1_term_structure.html#a32e050c75a34ceee6f0633bdb799a080">settlementDays</a>, const <a class="el" href="class_quant_lib_1_1_calendar.html">Calendar</a> &amp;, const <a class="el" href="class_quant_lib_1_1_day_counter.html">DayCounter</a> &amp;dc=<a class="el" href="class_quant_lib_1_1_day_counter.html">DayCounter</a>())</td></tr>
<tr class="memdesc:ab72309c6d49bd4b6dc5b9ed09b67c7b9"><td class="mdescLeft">&#160;</td><td class="mdescRight">calculate the reference date based on the global evaluation date <br /></td></tr>
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virtual&#160;</td><td class="memItemRight" valign="bottom"><b>~TermStructure</b> ()</td></tr>
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<tr><td colspan="2"><div class="groupHeader">Dates and Time</div></td></tr>
<tr class="memitem:ad49654ea33055b03f8666910acc13880"><td class="memItemLeft" align="right" valign="top"><a id="ad49654ea33055b03f8666910acc13880"></a>
virtual <a class="el" href="class_quant_lib_1_1_day_counter.html">DayCounter</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_quant_lib_1_1_term_structure.html#ad49654ea33055b03f8666910acc13880">dayCounter</a> () const</td></tr>
<tr class="memdesc:ad49654ea33055b03f8666910acc13880"><td class="mdescLeft">&#160;</td><td class="mdescRight">the day counter used for date/time conversion <br /></td></tr>
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<tr class="memitem:aa249f26327547294e5f920745cab10fd"><td class="memItemLeft" align="right" valign="top"><a id="aa249f26327547294e5f920745cab10fd"></a>
<a class="el" href="group__types.html#ga14fb8fca43a68f4168654e1f9f7e22f7">Time</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_quant_lib_1_1_term_structure.html#aa249f26327547294e5f920745cab10fd">timeFromReference</a> (const <a class="el" href="class_quant_lib_1_1_date.html">Date</a> &amp;date) const</td></tr>
<tr class="memdesc:aa249f26327547294e5f920745cab10fd"><td class="mdescLeft">&#160;</td><td class="mdescRight">date/time conversion <br /></td></tr>
<tr class="separator:aa249f26327547294e5f920745cab10fd"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a9d5c437961b8f9e30cffb723777ed7c6"><td class="memItemLeft" align="right" valign="top"><a id="a9d5c437961b8f9e30cffb723777ed7c6"></a>
virtual <a class="el" href="class_quant_lib_1_1_date.html">Date</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_quant_lib_1_1_term_structure.html#a9d5c437961b8f9e30cffb723777ed7c6">maxDate</a> () const =0</td></tr>
<tr class="memdesc:a9d5c437961b8f9e30cffb723777ed7c6"><td class="mdescLeft">&#160;</td><td class="mdescRight">the latest date for which the curve can return values <br /></td></tr>
<tr class="separator:a9d5c437961b8f9e30cffb723777ed7c6"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a4950639c8f60a60050efe2772e1d6a2a"><td class="memItemLeft" align="right" valign="top"><a id="a4950639c8f60a60050efe2772e1d6a2a"></a>
virtual <a class="el" href="group__types.html#ga14fb8fca43a68f4168654e1f9f7e22f7">Time</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_quant_lib_1_1_term_structure.html#a4950639c8f60a60050efe2772e1d6a2a">maxTime</a> () const</td></tr>
<tr class="memdesc:a4950639c8f60a60050efe2772e1d6a2a"><td class="mdescLeft">&#160;</td><td class="mdescRight">the latest time for which the curve can return values <br /></td></tr>
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virtual const <a class="el" href="class_quant_lib_1_1_date.html">Date</a> &amp;&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_quant_lib_1_1_term_structure.html#acd49fd0f9bfecc09e0d3461f16ec5d79">referenceDate</a> () const</td></tr>
<tr class="memdesc:acd49fd0f9bfecc09e0d3461f16ec5d79"><td class="mdescLeft">&#160;</td><td class="mdescRight">the date at which discount = 1.0 and/or variance = 0.0 <br /></td></tr>
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virtual <a class="el" href="class_quant_lib_1_1_calendar.html">Calendar</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_quant_lib_1_1_term_structure.html#a38e235178eb0a7749c37a16d71f4762f">calendar</a> () const</td></tr>
<tr class="memdesc:a38e235178eb0a7749c37a16d71f4762f"><td class="mdescLeft">&#160;</td><td class="mdescRight">the calendar used for reference and/or option date calculation <br /></td></tr>
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virtual <a class="el" href="group__types.html#ga7e529c39c477ba1f5a22264d93e8457a">Natural</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_quant_lib_1_1_term_structure.html#a32e050c75a34ceee6f0633bdb799a080">settlementDays</a> () const</td></tr>
<tr class="memdesc:a32e050c75a34ceee6f0633bdb799a080"><td class="mdescLeft">&#160;</td><td class="mdescRight">the settlementDays used for reference date calculation <br /></td></tr>
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<tr class="inherit_header pub_methods_class_quant_lib_1_1_observer"><td colspan="2" onclick="javascript:toggleInherit('pub_methods_class_quant_lib_1_1_observer')"><img src="closed.png" alt="-"/>&#160;Public Member Functions inherited from <a class="el" href="class_quant_lib_1_1_observer.html">Observer</a></td></tr>
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&#160;</td><td class="memItemRight" valign="bottom"><b>Observer</b> (const <a class="el" href="class_quant_lib_1_1_observer.html">Observer</a> &amp;)</td></tr>
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<a class="el" href="class_quant_lib_1_1_observer.html">Observer</a> &amp;&#160;</td><td class="memItemRight" valign="bottom"><b>operator=</b> (const <a class="el" href="class_quant_lib_1_1_observer.html">Observer</a> &amp;)</td></tr>
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std::pair&lt; iterator, bool &gt;&#160;</td><td class="memItemRight" valign="bottom"><b>registerWith</b> (const ext::shared_ptr&lt; <a class="el" href="class_quant_lib_1_1_observable.html">Observable</a> &gt; &amp;)</td></tr>
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<tr class="memitem:a51d57eb97a3a57312a47bda29235f182 inherit pub_methods_class_quant_lib_1_1_observer"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_quant_lib_1_1_observer.html#a51d57eb97a3a57312a47bda29235f182">registerWithObservables</a> (const ext::shared_ptr&lt; <a class="el" href="class_quant_lib_1_1_observer.html">Observer</a> &gt; &amp;)</td></tr>
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<a class="el" href="group__types.html#gaf38bdb4c54463b1f456655efa95b5c77">Size</a>&#160;</td><td class="memItemRight" valign="bottom"><b>unregisterWith</b> (const ext::shared_ptr&lt; <a class="el" href="class_quant_lib_1_1_observable.html">Observable</a> &gt; &amp;)</td></tr>
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void&#160;</td><td class="memItemRight" valign="bottom"><b>unregisterWithAll</b> ()</td></tr>
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<tr class="memitem:a3d53f9669c128dadc74a5d044a7c8e68 inherit pub_methods_class_quant_lib_1_1_observer"><td class="memItemLeft" align="right" valign="top">virtual void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_quant_lib_1_1_observer.html#a3d53f9669c128dadc74a5d044a7c8e68">deepUpdate</a> ()</td></tr>
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&#160;</td><td class="memItemRight" valign="bottom"><b>Observable</b> (const <a class="el" href="class_quant_lib_1_1_observable.html">Observable</a> &amp;)</td></tr>
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<tr class="memitem:a522aacdd0f2408fe5e46527a6db999b4 inherit pub_methods_class_quant_lib_1_1_observable"><td class="memItemLeft" align="right" valign="top"><a class="el" href="class_quant_lib_1_1_observable.html">Observable</a> &amp;&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_quant_lib_1_1_observable.html#a522aacdd0f2408fe5e46527a6db999b4">operator=</a> (const <a class="el" href="class_quant_lib_1_1_observable.html">Observable</a> &amp;)</td></tr>
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<tr class="memitem:a397546715bfc5aedd1d16dd202a19d4c inherit pub_methods_class_quant_lib_1_1_observable"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_quant_lib_1_1_observable.html#a397546715bfc5aedd1d16dd202a19d4c">notifyObservers</a> ()</td></tr>
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<tr class="inherit_header pub_methods_class_quant_lib_1_1_extrapolator"><td colspan="2" onclick="javascript:toggleInherit('pub_methods_class_quant_lib_1_1_extrapolator')"><img src="closed.png" alt="-"/>&#160;Public Member Functions inherited from <a class="el" href="class_quant_lib_1_1_extrapolator.html">Extrapolator</a></td></tr>
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void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_quant_lib_1_1_extrapolator.html#ae60e793a77f44a9c022b103458fa993c">enableExtrapolation</a> (bool b=true)</td></tr>
<tr class="memdesc:ae60e793a77f44a9c022b103458fa993c inherit pub_methods_class_quant_lib_1_1_extrapolator"><td class="mdescLeft">&#160;</td><td class="mdescRight">enable extrapolation in subsequent calls <br /></td></tr>
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<tr class="memitem:abab5047522a68771f2b1d51d1ac78383 inherit pub_methods_class_quant_lib_1_1_extrapolator"><td class="memItemLeft" align="right" valign="top"><a id="abab5047522a68771f2b1d51d1ac78383"></a>
void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_quant_lib_1_1_extrapolator.html#abab5047522a68771f2b1d51d1ac78383">disableExtrapolation</a> (bool b=true)</td></tr>
<tr class="memdesc:abab5047522a68771f2b1d51d1ac78383 inherit pub_methods_class_quant_lib_1_1_extrapolator"><td class="mdescLeft">&#160;</td><td class="mdescRight">disable extrapolation in subsequent calls <br /></td></tr>
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bool&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_quant_lib_1_1_extrapolator.html#a323f875818fddd62a1c56c25ddaee418">allowsExtrapolation</a> () const</td></tr>
<tr class="memdesc:a323f875818fddd62a1c56c25ddaee418 inherit pub_methods_class_quant_lib_1_1_extrapolator"><td class="mdescLeft">&#160;</td><td class="mdescRight">tells whether extrapolation is enabled <br /></td></tr>
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Observer interface</h2></td></tr>
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bool&#160;</td><td class="memItemRight" valign="bottom"><b>moving_</b></td></tr>
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bool&#160;</td><td class="memItemRight" valign="bottom"><b>updated_</b></td></tr>
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<a class="el" href="class_quant_lib_1_1_calendar.html">Calendar</a>&#160;</td><td class="memItemRight" valign="bottom"><b>calendar_</b></td></tr>
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<tr class="memitem:ac5c54df7ed3b930268c8d7752c101725"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_quant_lib_1_1_term_structure.html#ac5c54df7ed3b930268c8d7752c101725">update</a> ()</td></tr>
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void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_quant_lib_1_1_term_structure.html#abbff679b6600c49cafed098870f94376">checkRange</a> (const <a class="el" href="class_quant_lib_1_1_date.html">Date</a> &amp;d, bool extrapolate) const</td></tr>
<tr class="memdesc:abbff679b6600c49cafed098870f94376"><td class="mdescLeft">&#160;</td><td class="mdescRight">date-range check <br /></td></tr>
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void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_quant_lib_1_1_term_structure.html#ac13f8e2d29e10f3fb6838bfb59759299">checkRange</a> (<a class="el" href="group__types.html#ga14fb8fca43a68f4168654e1f9f7e22f7">Time</a> t, bool extrapolate) const</td></tr>
<tr class="memdesc:ac13f8e2d29e10f3fb6838bfb59759299"><td class="mdescLeft">&#160;</td><td class="mdescRight">time-range check <br /></td></tr>
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<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="inherited"></a>
Additional Inherited Members</h2></td></tr>
<tr class="inherit_header pub_types_class_quant_lib_1_1_observer"><td colspan="2" onclick="javascript:toggleInherit('pub_types_class_quant_lib_1_1_observer')"><img src="closed.png" alt="-"/>&#160;Public Types inherited from <a class="el" href="class_quant_lib_1_1_observer.html">Observer</a></td></tr>
<tr class="memitem:a78de5f2b6bce96d718e3c18b9f52d67c inherit pub_types_class_quant_lib_1_1_observer"><td class="memItemLeft" align="right" valign="top"><a id="a78de5f2b6bce96d718e3c18b9f52d67c"></a>
typedef boost::unordered_set&lt; ext::shared_ptr&lt; <a class="el" href="class_quant_lib_1_1_observable.html">Observable</a> &gt; &gt;&#160;</td><td class="memItemRight" valign="bottom"><b>set_type</b></td></tr>
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typedef set_type::iterator&#160;</td><td class="memItemRight" valign="bottom"><b>iterator</b></td></tr>
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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><p>Basic term-structure functionality. </p>
</div><h2 class="groupheader">Constructor &amp; Destructor Documentation</h2>
<a id="a4a8e0f324391a12454f11f5f5d5e66e8"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a4a8e0f324391a12454f11f5f5d5e66e8">&#9670;&nbsp;</a></span>TermStructure()</h2>

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          <td class="memname"><a class="el" href="class_quant_lib_1_1_term_structure.html">TermStructure</a> </td>
          <td>(</td>
          <td class="paramtype">const <a class="el" href="class_quant_lib_1_1_day_counter.html">DayCounter</a> &amp;&#160;</td>
          <td class="paramname"><em>dc</em> = <code><a class="el" href="class_quant_lib_1_1_day_counter.html">DayCounter</a>()</code></td><td>)</td>
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<p>default constructor </p>
<dl class="caveats"><dt><b><a class="el" href="caveats.html#_caveats000155">Warning:</a></b></dt><dd>term structures initialized by means of this constructor must manage their own reference date by overriding the <a class="el" href="class_quant_lib_1_1_term_structure.html#acd49fd0f9bfecc09e0d3461f16ec5d79" title="the date at which discount = 1.0 and/or variance = 0.0">referenceDate()</a> method. </dd></dl>

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<h2 class="groupheader">Member Function Documentation</h2>
<a id="ac5c54df7ed3b930268c8d7752c101725"></a>
<h2 class="memtitle"><span class="permalink"><a href="#ac5c54df7ed3b930268c8d7752c101725">&#9670;&nbsp;</a></span>update()</h2>

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          <td class="memname">void update </td>
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<p>This method must be implemented in derived classes. An instance of Observer does not call this method directly: instead, it will be called by the observables the instance registered with when they need to notify any changes. </p>

<p>Implements <a class="el" href="class_quant_lib_1_1_observer.html#a99b02345a8a15d3c5ea2844a2253f510">Observer</a>.</p>

<p>Reimplemented in <a class="el" href="class_quant_lib_1_1_yield_term_structure.html#ac5c54df7ed3b930268c8d7752c101725">YieldTermStructure</a>, <a class="el" href="class_quant_lib_1_1_zero_spreaded_term_structure.html#ac5c54df7ed3b930268c8d7752c101725">ZeroSpreadedTermStructure</a>, <a class="el" href="class_quant_lib_1_1_interpolated_piecewise_zero_spreaded_term_structure.html#ac5c54df7ed3b930268c8d7752c101725">InterpolatedPiecewiseZeroSpreadedTermStructure&lt; Interpolator &gt;</a>, <a class="el" href="class_quant_lib_1_1_forward_spreaded_term_structure.html#ac5c54df7ed3b930268c8d7752c101725">ForwardSpreadedTermStructure</a>, <a class="el" href="class_quant_lib_1_1_flat_forward.html#ac5c54df7ed3b930268c8d7752c101725">FlatForward</a>, <a class="el" href="class_quant_lib_1_1_fitted_bond_discount_curve.html#ac5c54df7ed3b930268c8d7752c101725">FittedBondDiscountCurve</a>, <a class="el" href="class_quant_lib_1_1_stripped_optionlet_adapter.html#ac5c54df7ed3b930268c8d7752c101725">StrippedOptionletAdapter</a>, <a class="el" href="class_quant_lib_1_1_cap_floor_term_vol_surface.html#ac5c54df7ed3b930268c8d7752c101725">CapFloorTermVolSurface</a>, <a class="el" href="class_quant_lib_1_1_cap_floor_term_vol_curve.html#ac5c54df7ed3b930268c8d7752c101725">CapFloorTermVolCurve</a>, <a class="el" href="class_quant_lib_1_1_piecewise_zero_inflation_curve.html#ac5c54df7ed3b930268c8d7752c101725">PiecewiseZeroInflationCurve&lt; Interpolator, Bootstrap, Traits &gt;</a>, <a class="el" href="class_quant_lib_1_1_piecewise_yo_y_inflation_curve.html#ac5c54df7ed3b930268c8d7752c101725">PiecewiseYoYInflationCurve&lt; Interpolator, Bootstrap, Traits &gt;</a>, and <a class="el" href="class_quant_lib_1_1_default_probability_term_structure.html#ac5c54df7ed3b930268c8d7752c101725">DefaultProbabilityTermStructure</a>.</p>

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