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<div class="navpath"><b>sc</b>::<a class="el" href="classsc_1_1BFGSUpdate.html">BFGSUpdate</a>
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<h1>sc::BFGSUpdate Class Reference</h1><!-- doxytag: class="sc::BFGSUpdate" --><!-- doxytag: inherits="sc::DFPUpdate" -->The <a class="el" href="classsc_1_1DFPUpdate.html" title="The DFPUpdate class is used to specify a Davidson, Fletcher, and Powell hessian update...">DFPUpdate</a> class is used to specify a Broyden, Fletcher, Goldfarb, and Shanno hessian update scheme.
<a href="#_details">More...</a>
<p>
<code>#include <<a class="el" href="update_8h_source.html">update.h</a>></code>
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Inheritance diagram for sc::BFGSUpdate:</div>
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<p><center><img src="classsc_1_1BFGSUpdate.png" usemap="#sc::BFGSUpdate_map" border="0" alt=""></center>
<map name="sc::BFGSUpdate_map">
<area href="classsc_1_1DFPUpdate.html" alt="sc::DFPUpdate" shape="rect" coords="0,280,120,304">
<area href="classsc_1_1HessianUpdate.html" alt="sc::HessianUpdate" shape="rect" coords="0,224,120,248">
<area href="classsc_1_1SavableState.html" alt="sc::SavableState" shape="rect" coords="0,168,120,192">
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<area href="classsc_1_1RefCount.html" alt="sc::RefCount" shape="rect" coords="0,56,120,80">
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<a href="classsc_1_1BFGSUpdate-members.html">List of all members.</a><table border="0" cellpadding="0" cellspacing="0">
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<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="555165dd85124de030de53ed9d214d9f"></a><!-- doxytag: member="sc::BFGSUpdate::BFGSUpdate" ref="555165dd85124de030de53ed9d214d9f" args="(StateIn &)" -->
</td><td class="memItemRight" valign="bottom"><b>BFGSUpdate</b> (<a class="el" href="classsc_1_1StateIn.html">StateIn</a> &)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="4d12c4da5d30a77ccf7858f20f2c5a69"></a><!-- doxytag: member="sc::BFGSUpdate::BFGSUpdate" ref="4d12c4da5d30a77ccf7858f20f2c5a69" args="(const Ref< KeyVal > &)" -->
</td><td class="memItemRight" valign="bottom"><b>BFGSUpdate</b> (const <a class="el" href="classsc_1_1Ref.html">Ref</a>< <a class="el" href="classsc_1_1KeyVal.html">KeyVal</a> > &)</td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top">void </td><td class="memItemRight" valign="bottom"><a class="el" href="classsc_1_1BFGSUpdate.html#077b8ef5605aa2036597f73fd37f09d1">save_data_state</a> (<a class="el" href="classsc_1_1StateOut.html">StateOut</a> &)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Save the base classes (with save_data_state) and the members in the same order that the <a class="el" href="classsc_1_1StateIn.html" title="Restores objects that derive from SavableState.">StateIn</a> CTOR initializes them. <a href="#077b8ef5605aa2036597f73fd37f09d1"></a><br></td></tr>
<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="6cb9822c36292ed5181c344f228d1cc0"></a><!-- doxytag: member="sc::BFGSUpdate::update" ref="6cb9822c36292ed5181c344f228d1cc0" args="(const RefSymmSCMatrix &ihessian, const Ref< Function > &, const RefSCVector &xnew, const RefSCVector &gnew)" -->
void </td><td class="memItemRight" valign="bottom"><b>update</b> (const <a class="el" href="classsc_1_1RefSymmSCMatrix.html">RefSymmSCMatrix</a> &ihessian, const <a class="el" href="classsc_1_1Ref.html">Ref</a>< <a class="el" href="classsc_1_1Function.html">Function</a> > &, const <a class="el" href="classsc_1_1RefSCVector.html">RefSCVector</a> &xnew, const <a class="el" href="classsc_1_1RefSCVector.html">RefSCVector</a> &gnew)</td></tr>
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<hr><a name="_details"></a><h2>Detailed Description</h2>
The <a class="el" href="classsc_1_1DFPUpdate.html" title="The DFPUpdate class is used to specify a Davidson, Fletcher, and Powell hessian update...">DFPUpdate</a> class is used to specify a Broyden, Fletcher, Goldfarb, and Shanno hessian update scheme.
<p>
This hessian update method is the recommended method for use with <a class="el" href="classsc_1_1QNewtonOpt.html" title="The QNewtonOpt implements a quasi-Newton optimization scheme.">QNewtonOpt</a> objects. <hr><h2>Member Function Documentation</h2>
<a class="anchor" name="077b8ef5605aa2036597f73fd37f09d1"></a><!-- doxytag: member="sc::BFGSUpdate::save_data_state" ref="077b8ef5605aa2036597f73fd37f09d1" args="(StateOut &)" -->
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<td class="memname">void sc::BFGSUpdate::save_data_state </td>
<td>(</td>
<td class="paramtype"><a class="el" href="classsc_1_1StateOut.html">StateOut</a> & </td>
<td class="paramname"> </td>
<td> ) </td>
<td><code> [virtual]</code></td>
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<p>
Save the base classes (with save_data_state) and the members in the same order that the <a class="el" href="classsc_1_1StateIn.html" title="Restores objects that derive from SavableState.">StateIn</a> CTOR initializes them.
<p>
This must be implemented by the derived class if the class has data.
<p>Reimplemented from <a class="el" href="classsc_1_1DFPUpdate.html#d5555925cc80534d35757a9cd15f8f2d">sc::DFPUpdate</a>.</p>
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<hr>The documentation for this class was generated from the following file:<ul>
<li><a class="el" href="update_8h_source.html">update.h</a></ul>
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