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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_forward_spreaded_term_structure.html">ForwardSpreadedTermStructure</a></li>  </ul>
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<div class="title">ForwardSpreadedTermStructure Class Reference<div class="ingroups"><a class="el" href="group__yieldtermstructures.html">Term structures</a></div></div>  </div>
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<p>Term structure with added spread on the instantaneous forward rate.  
 <a href="class_quant_lib_1_1_forward_spreaded_term_structure.html#details">More...</a></p>

<p><code>#include &lt;ql/termstructures/yield/forwardspreadedtermstructure.hpp&gt;</code></p>
<div id="dynsection-0" onclick="return toggleVisibility(this)" class="dynheader closed" style="cursor:pointer;">
  <img id="dynsection-0-trigger" src="closed.png" alt="+"/> Inheritance diagram for ForwardSpreadedTermStructure:</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:af0fc8e2b047bebd3a8a7ffecb98042b5"><td class="memItemLeft" align="right" valign="top"><a id="af0fc8e2b047bebd3a8a7ffecb98042b5"></a>
&#160;</td><td class="memItemRight" valign="bottom"><b>ForwardSpreadedTermStructure</b> (const <a class="el" href="class_quant_lib_1_1_handle.html">Handle</a>&lt; <a class="el" href="class_quant_lib_1_1_yield_term_structure.html">YieldTermStructure</a> &gt; &amp;, const <a class="el" href="class_quant_lib_1_1_handle.html">Handle</a>&lt; <a class="el" href="class_quant_lib_1_1_quote.html">Quote</a> &gt; &amp;spread)</td></tr>
<tr class="separator:af0fc8e2b047bebd3a8a7ffecb98042b5"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr><td colspan="2"><div class="groupHeader">TermStructure interface</div></td></tr>
<tr class="memitem:ad49654ea33055b03f8666910acc13880"><td class="memItemLeft" align="right" valign="top"><a id="ad49654ea33055b03f8666910acc13880"></a>
<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_forward_spreaded_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>
<tr class="separator:ad49654ea33055b03f8666910acc13880"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a6fa1d746e67f372c6e09e4ec9ad8973b"><td class="memItemLeft" align="right" valign="top"><a id="a6fa1d746e67f372c6e09e4ec9ad8973b"></a>
<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_forward_spreaded_term_structure.html#a6fa1d746e67f372c6e09e4ec9ad8973b">maxDate</a> () const</td></tr>
<tr class="memdesc:a6fa1d746e67f372c6e09e4ec9ad8973b"><td class="mdescLeft">&#160;</td><td class="mdescRight">the latest date for which the curve can return values <br /></td></tr>
<tr class="separator:a6fa1d746e67f372c6e09e4ec9ad8973b"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a4950639c8f60a60050efe2772e1d6a2a"><td class="memItemLeft" align="right" valign="top"><a id="a4950639c8f60a60050efe2772e1d6a2a"></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_forward_spreaded_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>
<tr class="separator:a4950639c8f60a60050efe2772e1d6a2a"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a34aadf8e384e50e6ee34067cc448262a"><td class="memItemLeft" align="right" valign="top"><a id="a34aadf8e384e50e6ee34067cc448262a"></a>
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_forward_spreaded_term_structure.html#a34aadf8e384e50e6ee34067cc448262a">referenceDate</a> () const</td></tr>
<tr class="memdesc:a34aadf8e384e50e6ee34067cc448262a"><td class="mdescLeft">&#160;</td><td class="mdescRight">the date at which discount = 1.0 and/or variance = 0.0 <br /></td></tr>
<tr class="separator:a34aadf8e384e50e6ee34067cc448262a"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a38e235178eb0a7749c37a16d71f4762f"><td class="memItemLeft" align="right" valign="top"><a id="a38e235178eb0a7749c37a16d71f4762f"></a>
<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_forward_spreaded_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>
<tr class="separator:a38e235178eb0a7749c37a16d71f4762f"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a32e050c75a34ceee6f0633bdb799a080"><td class="memItemLeft" align="right" valign="top"><a id="a32e050c75a34ceee6f0633bdb799a080"></a>
<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_forward_spreaded_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>
<tr class="separator:a32e050c75a34ceee6f0633bdb799a080"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr><td colspan="2"><div class="groupHeader">Observer interface</div></td></tr>
<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_forward_spreaded_term_structure.html#ac5c54df7ed3b930268c8d7752c101725">update</a> ()</td></tr>
<tr class="separator:ac5c54df7ed3b930268c8d7752c101725"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="inherit_header pub_methods_class_quant_lib_1_1_forward_rate_structure"><td colspan="2" onclick="javascript:toggleInherit('pub_methods_class_quant_lib_1_1_forward_rate_structure')"><img src="closed.png" alt="-"/>&#160;Public Member Functions inherited from <a class="el" href="class_quant_lib_1_1_forward_rate_structure.html">ForwardRateStructure</a></td></tr>
<tr class="memitem:a5871f61e6a066fcb7718fca9f8212690 inherit pub_methods_class_quant_lib_1_1_forward_rate_structure"><td class="memItemLeft" align="right" valign="top"><a id="a5871f61e6a066fcb7718fca9f8212690"></a>
&#160;</td><td class="memItemRight" valign="bottom"><b>ForwardRateStructure</b> (const <a class="el" href="class_quant_lib_1_1_day_counter.html">DayCounter</a> &amp;<a class="el" href="class_quant_lib_1_1_term_structure.html#ad49654ea33055b03f8666910acc13880">dayCounter</a>=<a class="el" href="class_quant_lib_1_1_day_counter.html">DayCounter</a>())</td></tr>
<tr class="separator:a5871f61e6a066fcb7718fca9f8212690 inherit pub_methods_class_quant_lib_1_1_forward_rate_structure"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a7b11cbb8289a2f4e8a60881933db71cb inherit pub_methods_class_quant_lib_1_1_forward_rate_structure"><td class="memItemLeft" align="right" valign="top"><a id="a7b11cbb8289a2f4e8a60881933db71cb"></a>
&#160;</td><td class="memItemRight" valign="bottom"><b>ForwardRateStructure</b> (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;cal=<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;<a class="el" href="class_quant_lib_1_1_term_structure.html#ad49654ea33055b03f8666910acc13880">dayCounter</a>=<a class="el" href="class_quant_lib_1_1_day_counter.html">DayCounter</a>(), const std::vector&lt; <a class="el" href="class_quant_lib_1_1_handle.html">Handle</a>&lt; <a class="el" href="class_quant_lib_1_1_quote.html">Quote</a> &gt; &gt; &amp;jumps=std::vector&lt; <a class="el" href="class_quant_lib_1_1_handle.html">Handle</a>&lt; <a class="el" href="class_quant_lib_1_1_quote.html">Quote</a> &gt; &gt;(), const std::vector&lt; <a class="el" href="class_quant_lib_1_1_date.html">Date</a> &gt; &amp;jumpDates=std::vector&lt; <a class="el" href="class_quant_lib_1_1_date.html">Date</a> &gt;())</td></tr>
<tr class="separator:a7b11cbb8289a2f4e8a60881933db71cb inherit pub_methods_class_quant_lib_1_1_forward_rate_structure"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:af53b3b6ab246c5407d66ca67298883bc inherit pub_methods_class_quant_lib_1_1_forward_rate_structure"><td class="memItemLeft" align="right" valign="top"><a id="af53b3b6ab246c5407d66ca67298883bc"></a>
&#160;</td><td class="memItemRight" valign="bottom"><b>ForwardRateStructure</b> (<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;cal, const <a class="el" href="class_quant_lib_1_1_day_counter.html">DayCounter</a> &amp;<a class="el" href="class_quant_lib_1_1_term_structure.html#ad49654ea33055b03f8666910acc13880">dayCounter</a>=<a class="el" href="class_quant_lib_1_1_day_counter.html">DayCounter</a>(), const std::vector&lt; <a class="el" href="class_quant_lib_1_1_handle.html">Handle</a>&lt; <a class="el" href="class_quant_lib_1_1_quote.html">Quote</a> &gt; &gt; &amp;jumps=std::vector&lt; <a class="el" href="class_quant_lib_1_1_handle.html">Handle</a>&lt; <a class="el" href="class_quant_lib_1_1_quote.html">Quote</a> &gt; &gt;(), const std::vector&lt; <a class="el" href="class_quant_lib_1_1_date.html">Date</a> &gt; &amp;jumpDates=std::vector&lt; <a class="el" href="class_quant_lib_1_1_date.html">Date</a> &gt;())</td></tr>
<tr class="separator:af53b3b6ab246c5407d66ca67298883bc inherit pub_methods_class_quant_lib_1_1_forward_rate_structure"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ac7eac3b13177d3e56f2adafa99f6d1c5 inherit pub_methods_class_quant_lib_1_1_forward_rate_structure"><td class="memItemLeft" align="right" valign="top">QL_DEPRECATED&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_quant_lib_1_1_forward_rate_structure.html#ac7eac3b13177d3e56f2adafa99f6d1c5">ForwardRateStructure</a> (const <a class="el" href="class_quant_lib_1_1_day_counter.html">DayCounter</a> &amp;<a class="el" href="class_quant_lib_1_1_term_structure.html#ad49654ea33055b03f8666910acc13880">dayCounter</a>, const std::vector&lt; <a class="el" href="class_quant_lib_1_1_handle.html">Handle</a>&lt; <a class="el" href="class_quant_lib_1_1_quote.html">Quote</a> &gt; &gt; &amp;jumps, const std::vector&lt; <a class="el" href="class_quant_lib_1_1_date.html">Date</a> &gt; &amp;jumpDates=std::vector&lt; <a class="el" href="class_quant_lib_1_1_date.html">Date</a> &gt;())</td></tr>
<tr class="separator:ac7eac3b13177d3e56f2adafa99f6d1c5 inherit pub_methods_class_quant_lib_1_1_forward_rate_structure"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="inherit_header pub_methods_class_quant_lib_1_1_yield_term_structure"><td colspan="2" onclick="javascript:toggleInherit('pub_methods_class_quant_lib_1_1_yield_term_structure')"><img src="closed.png" alt="-"/>&#160;Public Member Functions inherited from <a class="el" href="class_quant_lib_1_1_yield_term_structure.html">YieldTermStructure</a></td></tr>
<tr class="memitem:a7985e20177b67f441f758b22bc138f95 inherit pub_methods_class_quant_lib_1_1_yield_term_structure"><td class="memItemLeft" align="right" valign="top"><a id="a7985e20177b67f441f758b22bc138f95"></a>
&#160;</td><td class="memItemRight" valign="bottom"><b>YieldTermStructure</b> (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>
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&#160;</td><td class="memItemRight" valign="bottom"><b>YieldTermStructure</b> (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;cal=<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>(), const std::vector&lt; <a class="el" href="class_quant_lib_1_1_handle.html">Handle</a>&lt; <a class="el" href="class_quant_lib_1_1_quote.html">Quote</a> &gt; &gt; &amp;jumps=std::vector&lt; <a class="el" href="class_quant_lib_1_1_handle.html">Handle</a>&lt; <a class="el" href="class_quant_lib_1_1_quote.html">Quote</a> &gt; &gt;(), const std::vector&lt; <a class="el" href="class_quant_lib_1_1_date.html">Date</a> &gt; &amp;jumpDates=std::vector&lt; <a class="el" href="class_quant_lib_1_1_date.html">Date</a> &gt;())</td></tr>
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&#160;</td><td class="memItemRight" valign="bottom"><b>YieldTermStructure</b> (<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;cal, 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>(), const std::vector&lt; <a class="el" href="class_quant_lib_1_1_handle.html">Handle</a>&lt; <a class="el" href="class_quant_lib_1_1_quote.html">Quote</a> &gt; &gt; &amp;jumps=std::vector&lt; <a class="el" href="class_quant_lib_1_1_handle.html">Handle</a>&lt; <a class="el" href="class_quant_lib_1_1_quote.html">Quote</a> &gt; &gt;(), const std::vector&lt; <a class="el" href="class_quant_lib_1_1_date.html">Date</a> &gt; &amp;jumpDates=std::vector&lt; <a class="el" href="class_quant_lib_1_1_date.html">Date</a> &gt;())</td></tr>
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<tr class="memitem:ab84b869e5072df42bd0e5498b4c2780c inherit pub_methods_class_quant_lib_1_1_yield_term_structure"><td class="memItemLeft" align="right" valign="top">QL_DEPRECATED&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_quant_lib_1_1_yield_term_structure.html#ab84b869e5072df42bd0e5498b4c2780c">YieldTermStructure</a> (const <a class="el" href="class_quant_lib_1_1_day_counter.html">DayCounter</a> &amp;dc, const std::vector&lt; <a class="el" href="class_quant_lib_1_1_handle.html">Handle</a>&lt; <a class="el" href="class_quant_lib_1_1_quote.html">Quote</a> &gt; &gt; &amp;jumps, const std::vector&lt; <a class="el" href="class_quant_lib_1_1_date.html">Date</a> &gt; &amp;jumpDates=std::vector&lt; <a class="el" href="class_quant_lib_1_1_date.html">Date</a> &gt;())</td></tr>
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<a class="el" href="group__types.html#ga642a971a0bcbbd2fb26c35e1a06e5761">DiscountFactor</a>&#160;</td><td class="memItemRight" valign="bottom"><b>discount</b> (const <a class="el" href="class_quant_lib_1_1_date.html">Date</a> &amp;d, bool extrapolate=false) const</td></tr>
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<tr class="memitem:aa055828cc9c2c181ac05401da5a2adee inherit pub_methods_class_quant_lib_1_1_yield_term_structure"><td class="memItemLeft" align="right" valign="top"><a class="el" href="class_quant_lib_1_1_interest_rate.html">InterestRate</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_quant_lib_1_1_yield_term_structure.html#aa055828cc9c2c181ac05401da5a2adee">zeroRate</a> (const <a class="el" href="class_quant_lib_1_1_date.html">Date</a> &amp;d, const <a class="el" href="class_quant_lib_1_1_day_counter.html">DayCounter</a> &amp;resultDayCounter, <a class="el" href="namespace_quant_lib.html#a2779d04b4839fd386b5c85bbb96aaf73">Compounding</a> comp, <a class="el" href="group__datetime.html#ga6d41db8ba0ea90d22df35889df452ada">Frequency</a> freq=<a class="el" href="group__datetime.html#gga6d41db8ba0ea90d22df35889df452adaa508b18014c96e2d466c12b39d7f4e426">Annual</a>, bool extrapolate=false) const</td></tr>
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<tr class="memitem:af175993bf875056649e95fe91a6cc461 inherit pub_methods_class_quant_lib_1_1_yield_term_structure"><td class="memItemLeft" align="right" valign="top"><a class="el" href="class_quant_lib_1_1_interest_rate.html">InterestRate</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_quant_lib_1_1_yield_term_structure.html#af175993bf875056649e95fe91a6cc461">forwardRate</a> (const <a class="el" href="class_quant_lib_1_1_date.html">Date</a> &amp;d1, const <a class="el" href="class_quant_lib_1_1_date.html">Date</a> &amp;d2, const <a class="el" href="class_quant_lib_1_1_day_counter.html">DayCounter</a> &amp;resultDayCounter, <a class="el" href="namespace_quant_lib.html#a2779d04b4839fd386b5c85bbb96aaf73">Compounding</a> comp, <a class="el" href="group__datetime.html#ga6d41db8ba0ea90d22df35889df452ada">Frequency</a> freq=<a class="el" href="group__datetime.html#gga6d41db8ba0ea90d22df35889df452adaa508b18014c96e2d466c12b39d7f4e426">Annual</a>, bool extrapolate=false) const</td></tr>
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<tr class="memitem:a28dfb39c8d0545274c583b6424b030c8 inherit pub_methods_class_quant_lib_1_1_yield_term_structure"><td class="memItemLeft" align="right" valign="top"><a class="el" href="class_quant_lib_1_1_interest_rate.html">InterestRate</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_quant_lib_1_1_yield_term_structure.html#a28dfb39c8d0545274c583b6424b030c8">forwardRate</a> (const <a class="el" href="class_quant_lib_1_1_date.html">Date</a> &amp;d, const <a class="el" href="class_quant_lib_1_1_period.html">Period</a> &amp;p, const <a class="el" href="class_quant_lib_1_1_day_counter.html">DayCounter</a> &amp;resultDayCounter, <a class="el" href="namespace_quant_lib.html#a2779d04b4839fd386b5c85bbb96aaf73">Compounding</a> comp, <a class="el" href="group__datetime.html#ga6d41db8ba0ea90d22df35889df452ada">Frequency</a> freq=<a class="el" href="group__datetime.html#gga6d41db8ba0ea90d22df35889df452adaa508b18014c96e2d466c12b39d7f4e426">Annual</a>, bool extrapolate=false) const</td></tr>
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<tr class="memitem:a5357bd635ffacece802a67d8a86801b6 inherit pub_methods_class_quant_lib_1_1_yield_term_structure"><td class="memItemLeft" align="right" valign="top"><a class="el" href="class_quant_lib_1_1_interest_rate.html">InterestRate</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_quant_lib_1_1_yield_term_structure.html#a5357bd635ffacece802a67d8a86801b6">forwardRate</a> (<a class="el" href="group__types.html#ga14fb8fca43a68f4168654e1f9f7e22f7">Time</a> t1, <a class="el" href="group__types.html#ga14fb8fca43a68f4168654e1f9f7e22f7">Time</a> t2, <a class="el" href="namespace_quant_lib.html#a2779d04b4839fd386b5c85bbb96aaf73">Compounding</a> comp, <a class="el" href="group__datetime.html#ga6d41db8ba0ea90d22df35889df452ada">Frequency</a> freq=<a class="el" href="group__datetime.html#gga6d41db8ba0ea90d22df35889df452adaa508b18014c96e2d466c12b39d7f4e426">Annual</a>, bool extrapolate=false) const</td></tr>
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const std::vector&lt; <a class="el" href="class_quant_lib_1_1_date.html">Date</a> &gt; &amp;&#160;</td><td class="memItemRight" valign="bottom"><b>jumpDates</b> () const</td></tr>
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const std::vector&lt; <a class="el" href="group__types.html#ga14fb8fca43a68f4168654e1f9f7e22f7">Time</a> &gt; &amp;&#160;</td><td class="memItemRight" valign="bottom"><b>jumpTimes</b> () const</td></tr>
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<tr class="memitem:ac5c54df7ed3b930268c8d7752c101725 inherit pub_methods_class_quant_lib_1_1_yield_term_structure"><td class="memItemLeft" align="right" valign="top">void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_quant_lib_1_1_yield_term_structure.html#ac5c54df7ed3b930268c8d7752c101725">update</a> ()</td></tr>
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<tr class="inherit_header pub_methods_class_quant_lib_1_1_term_structure"><td colspan="2" onclick="javascript:toggleInherit('pub_methods_class_quant_lib_1_1_term_structure')"><img src="closed.png" alt="-"/>&#160;Public Member Functions inherited from <a class="el" href="class_quant_lib_1_1_term_structure.html">TermStructure</a></td></tr>
<tr class="memitem:a4a8e0f324391a12454f11f5f5d5e66e8 inherit pub_methods_class_quant_lib_1_1_term_structure"><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 inherit pub_methods_class_quant_lib_1_1_term_structure"><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>
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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 inherit pub_methods_class_quant_lib_1_1_term_structure"><td class="mdescLeft">&#160;</td><td class="mdescRight">initialize with a fixed reference date <br /></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#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 inherit pub_methods_class_quant_lib_1_1_term_structure"><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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<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 inherit pub_methods_class_quant_lib_1_1_term_structure"><td class="mdescLeft">&#160;</td><td class="mdescRight">date/time conversion <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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<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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<tr class="memitem:a840dd96e33a304cbf681d357de7f48d0 inherit pub_methods_class_quant_lib_1_1_observable"><td class="memItemLeft" align="right" valign="top"><a id="a840dd96e33a304cbf681d357de7f48d0"></a>
&#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: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>
<tr class="memitem:ae60e793a77f44a9c022b103458fa993c inherit pub_methods_class_quant_lib_1_1_extrapolator"><td class="memItemLeft" align="right" valign="top"><a id="ae60e793a77f44a9c022b103458fa993c"></a>
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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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>
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ForwardRateStructure implementation</h2></td></tr>
<tr class="memitem:a00b574cd20c22c4d3f351727225c272e"><td class="memItemLeft" align="right" valign="top"><a id="a00b574cd20c22c4d3f351727225c272e"></a>
<a class="el" href="group__types.html#gaede435af51236692b1107d7639581d39">Rate</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_quant_lib_1_1_forward_spreaded_term_structure.html#a00b574cd20c22c4d3f351727225c272e">forwardImpl</a> (<a class="el" href="group__types.html#ga14fb8fca43a68f4168654e1f9f7e22f7">Time</a> t) const</td></tr>
<tr class="memdesc:a00b574cd20c22c4d3f351727225c272e"><td class="mdescLeft">&#160;</td><td class="mdescRight">instantaneous forward-rate calculation <br /></td></tr>
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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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<tr class="inherit_header pro_methods_class_quant_lib_1_1_forward_rate_structure"><td colspan="2" onclick="javascript:toggleInherit('pro_methods_class_quant_lib_1_1_forward_rate_structure')"><img src="closed.png" alt="-"/>&#160;Protected Member Functions inherited from <a class="el" href="class_quant_lib_1_1_forward_rate_structure.html">ForwardRateStructure</a></td></tr>
<tr class="memitem:a08c98cafd406e91aa8e17cedb889c99d inherit pro_methods_class_quant_lib_1_1_forward_rate_structure"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group__types.html#ga642a971a0bcbbd2fb26c35e1a06e5761">DiscountFactor</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="class_quant_lib_1_1_forward_rate_structure.html#a08c98cafd406e91aa8e17cedb889c99d">discountImpl</a> (<a class="el" href="group__types.html#ga14fb8fca43a68f4168654e1f9f7e22f7">Time</a>) const</td></tr>
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<tr class="inherit_header pro_methods_class_quant_lib_1_1_yield_term_structure"><td colspan="2" onclick="javascript:toggleInherit('pro_methods_class_quant_lib_1_1_yield_term_structure')"><img src="closed.png" alt="-"/>&#160;Protected Member Functions inherited from <a class="el" href="class_quant_lib_1_1_yield_term_structure.html">YieldTermStructure</a></td></tr>
<tr class="inherit_header pro_methods_class_quant_lib_1_1_term_structure"><td colspan="2" onclick="javascript:toggleInherit('pro_methods_class_quant_lib_1_1_term_structure')"><img src="closed.png" alt="-"/>&#160;Protected Member Functions inherited from <a class="el" href="class_quant_lib_1_1_term_structure.html">TermStructure</a></td></tr>
<tr class="memitem:abbff679b6600c49cafed098870f94376 inherit pro_methods_class_quant_lib_1_1_term_structure"><td class="memItemLeft" align="right" valign="top"><a id="abbff679b6600c49cafed098870f94376"></a>
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 inherit pro_methods_class_quant_lib_1_1_term_structure"><td class="mdescLeft">&#160;</td><td class="mdescRight">date-range check <br /></td></tr>
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<tr class="memitem:ac13f8e2d29e10f3fb6838bfb59759299 inherit pro_methods_class_quant_lib_1_1_term_structure"><td class="memItemLeft" align="right" valign="top"><a id="ac13f8e2d29e10f3fb6838bfb59759299"></a>
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 inherit pro_methods_class_quant_lib_1_1_term_structure"><td class="mdescLeft">&#160;</td><td class="mdescRight">time-range check <br /></td></tr>
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<tr class="inherit_header pro_attribs_class_quant_lib_1_1_term_structure"><td colspan="2" onclick="javascript:toggleInherit('pro_attribs_class_quant_lib_1_1_term_structure')"><img src="closed.png" alt="-"/>&#160;Protected Attributes inherited from <a class="el" href="class_quant_lib_1_1_term_structure.html">TermStructure</a></td></tr>
<tr class="memitem:a3cfce9cb19de6f0604adee64b6d80a35 inherit pro_attribs_class_quant_lib_1_1_term_structure"><td class="memItemLeft" align="right" valign="top"><a id="a3cfce9cb19de6f0604adee64b6d80a35"></a>
bool&#160;</td><td class="memItemRight" valign="bottom"><b>moving_</b></td></tr>
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<tr class="memitem:a56cd8ee45c3477740e0429f98758c935 inherit pro_attribs_class_quant_lib_1_1_term_structure"><td class="memItemLeft" align="right" valign="top"><a id="a56cd8ee45c3477740e0429f98758c935"></a>
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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<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><p>Term structure with added spread on the instantaneous forward rate. </p>
<dl class="section note"><dt>Note</dt><dd>This term structure will remain linked to the original structure, i.e., any changes in the latter will be reflected in this structure as well.</dd></dl>
<dl class="test"><dt><b><a class="el" href="test.html#_test000149">Tests:</a></b></dt><dd><ul>
<li>the correctness of the returned values is tested by checking them against numerical calculations.</li>
<li>observability against changes in the underlying term structure and in the added spread is checked. </li>
</ul>
</dd></dl>
</div><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>
          <td>(</td>
          <td class="paramname"></td><td>)</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>Reimplemented from <a class="el" href="class_quant_lib_1_1_term_structure.html#ac5c54df7ed3b930268c8d7752c101725">TermStructure</a>.</p>

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<a id="ae2ccf4d71e8b6d63e9ec34d0924b8b6a"></a>
<h2 class="memtitle"><span class="permalink"><a href="#ae2ccf4d71e8b6d63e9ec34d0924b8b6a">&#9670;&nbsp;</a></span>zeroYieldImpl()</h2>

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          <td class="memname"><a class="el" href="group__types.html#gaede435af51236692b1107d7639581d39">Rate</a> zeroYieldImpl </td>
          <td>(</td>
          <td class="paramtype"><a class="el" href="group__types.html#ga14fb8fca43a68f4168654e1f9f7e22f7">Time</a>&#160;</td>
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<p>Returns the zero yield rate for the given date calculating it from the instantaneous forward rate \( f(t) \) as </p><p class="formulaDsp">
\[ z(t) = \int_0^t f(\tau) d\tau \]
</p>
<dl class="caveats"><dt><b><a class="el" href="caveats.html#_caveats000178">Warning:</a></b></dt><dd>This default implementation uses an highly inefficient and possibly wildly inaccurate numerical integration. Derived classes should override it if a more efficient implementation is available. </dd></dl>

<p>Reimplemented from <a class="el" href="class_quant_lib_1_1_forward_rate_structure.html#a6cb141d7cb59ddf74ec1fbd3621028bf">ForwardRateStructure</a>.</p>

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