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26<h1>ldmat Class Reference</h1><!-- doxytag: class="ldmat" --><!-- doxytag: inherits="sqmat" -->Matrix stored in LD form, (commonly known as UD). 
27<a href="#_details">More...</a>
28<p>
29<code>#include &lt;<a class="el" href="libDC_8h-source.html">libDC.h</a>&gt;</code>
30<p>
31<div class="dynheader">
32Inheritance diagram for ldmat:</div>
33<div class="dynsection">
34<p><center><img src="classldmat__inherit__graph.png" border="0" usemap="#ldmat__inherit__map" alt="Inheritance graph"></center>
35<map name="ldmat__inherit__map">
36<area shape="rect" href="classsqmat.html" title="Virtual class for representation of double symmetric matrices in square&#45;root form..." alt="" coords="5,7,61,31"></map>
37<center><font size="2">[<a href="graph_legend.html">legend</a>]</font></center></div>
38<div class="dynheader">
39Collaboration diagram for ldmat:</div>
40<div class="dynsection">
41<p><center><img src="classldmat__coll__graph.png" border="0" usemap="#ldmat__coll__map" alt="Collaboration graph"></center>
42<map name="ldmat__coll__map">
43<area shape="rect" href="classsqmat.html" title="Virtual class for representation of double symmetric matrices in square&#45;root form..." alt="" coords="5,7,61,31"></map>
44<center><font size="2">[<a href="graph_legend.html">legend</a>]</font></center></div>
45
46<p>
47<a href="classldmat-members.html">List of all members.</a><table border="0" cellpadding="0" cellspacing="0">
48<tr><td></td></tr>
49<tr><td colspan="2"><br><h2>Public Member Functions</h2></td></tr>
50<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="968113788422e858da23a477e98fd3a1"></a><!-- doxytag: member="ldmat::ldmat" ref="968113788422e858da23a477e98fd3a1" args="(const mat &amp;L, const vec &amp;D)" -->
51&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classldmat.html#968113788422e858da23a477e98fd3a1">ldmat</a> (const mat &amp;<a class="el" href="classldmat.html#f74a64b99fe58a75ebd37bb679e121ea">L</a>, const vec &amp;<a class="el" href="classldmat.html#4cce04824539c4a8d062d9a36d6e014e">D</a>)</td></tr>
52
53<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Construct by copy of L and D. <br></td></tr>
54<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="5f21785358072d36892d538eed1d1ea5"></a><!-- doxytag: member="ldmat::ldmat" ref="5f21785358072d36892d538eed1d1ea5" args="(const mat &amp;V)" -->
55&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classldmat.html#5f21785358072d36892d538eed1d1ea5">ldmat</a> (const mat &amp;V)</td></tr>
56
57<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Construct by decomposition of full matrix V. <br></td></tr>
58<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="8e88c818f9605bc726e52c4136c71cc5"></a><!-- doxytag: member="ldmat::ldmat" ref="8e88c818f9605bc726e52c4136c71cc5" args="(const ldmat &amp;V0, const ivec &amp;perm)" -->
59&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classldmat.html#8e88c818f9605bc726e52c4136c71cc5">ldmat</a> (const <a class="el" href="classldmat.html">ldmat</a> &amp;V0, const ivec &amp;perm)</td></tr>
60
61<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Construct by restructuring of V0 accordint to permutation vector perm. <br></td></tr>
62<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="abe16e0f86668ef61a9a4896c8565dee"></a><!-- doxytag: member="ldmat::ldmat" ref="abe16e0f86668ef61a9a4896c8565dee" args="(vec D0)" -->
63&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classldmat.html#abe16e0f86668ef61a9a4896c8565dee">ldmat</a> (vec D0)</td></tr>
64
65<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Construct diagonal matrix with diagonal D0. <br></td></tr>
66<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="a12dda6f529580b0377cc45226b43303"></a><!-- doxytag: member="ldmat::ldmat" ref="a12dda6f529580b0377cc45226b43303" args="()" -->
67&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classldmat.html#a12dda6f529580b0377cc45226b43303">ldmat</a> ()</td></tr>
68
69<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Default constructor. <br></td></tr>
70<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="163ee002a7858d104da1c59dd11f016d"></a><!-- doxytag: member="ldmat::ldmat" ref="163ee002a7858d104da1c59dd11f016d" args="(const int dim0)" -->
71&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classldmat.html#163ee002a7858d104da1c59dd11f016d">ldmat</a> (const int dim0)</td></tr>
72
73<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Default initialization with proper size. <br></td></tr>
74<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="1e2734c0164ce5233c4d709679555138"></a><!-- doxytag: member="ldmat::~ldmat" ref="1e2734c0164ce5233c4d709679555138" args="()" -->
75virtual&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classldmat.html#1e2734c0164ce5233c4d709679555138">~ldmat</a> ()</td></tr>
76
77<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Destructor for future use;. <br></td></tr>
78<tr><td class="memItemLeft" nowrap align="right" valign="top">void&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classldmat.html#0f0f6e083e6d947cf58097ffce3ccd1a">opupdt</a> (const vec &amp;v, double w)</td></tr>
79
80<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="2c1ebc071de4bafbba55b80afd8a7e8e"></a><!-- doxytag: member="ldmat::to_mat" ref="2c1ebc071de4bafbba55b80afd8a7e8e" args="() const " -->
81mat&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classldmat.html#2c1ebc071de4bafbba55b80afd8a7e8e">to_mat</a> () const </td></tr>
82
83<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Conversion to full matrix. <br></td></tr>
84<tr><td class="memItemLeft" nowrap align="right" valign="top">void&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classldmat.html#e967b9425007f0cb6cd59b845f9756d8">mult_sym</a> (const mat &amp;C)</td></tr>
85
86<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Inplace symmetric multiplication by a SQUARE matrix <img class="formulaInl" alt="$C$" src="form_24.png">, i.e. <img class="formulaInl" alt="$V = C*V*C'$" src="form_25.png">.  <a href="#e967b9425007f0cb6cd59b845f9756d8"></a><br></td></tr>
87<tr><td class="memItemLeft" nowrap align="right" valign="top">void&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classldmat.html#4fd155f38eb6dd5af4bdf9c98a7999a9">mult_sym_t</a> (const mat &amp;C)</td></tr>
88
89<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Inplace symmetric multiplication by a SQUARE transpose of matrix <img class="formulaInl" alt="$C$" src="form_24.png">, i.e. <img class="formulaInl" alt="$V = C'*V*C$" src="form_26.png">.  <a href="#4fd155f38eb6dd5af4bdf9c98a7999a9"></a><br></td></tr>
90<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="a60f2c7e4f3c6a7738eaaaab81ffad20"></a><!-- doxytag: member="ldmat::add" ref="a60f2c7e4f3c6a7738eaaaab81ffad20" args="(const ldmat &amp;ld2, double w=1.0)" -->
91void&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classldmat.html#a60f2c7e4f3c6a7738eaaaab81ffad20">add</a> (const <a class="el" href="classldmat.html">ldmat</a> &amp;ld2, double w=1.0)</td></tr>
92
93<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Add another matrix in LD form with weight w. <br></td></tr>
94<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="2b42750ba4962d439aa52a77ae12949b"></a><!-- doxytag: member="ldmat::logdet" ref="2b42750ba4962d439aa52a77ae12949b" args="() const " -->
95double&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classldmat.html#2b42750ba4962d439aa52a77ae12949b">logdet</a> () const </td></tr>
96
97<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Logarithm of a determinant. <br></td></tr>
98<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="d64f331b781903e913cb2ee836886f3f"></a><!-- doxytag: member="ldmat::qform" ref="d64f331b781903e913cb2ee836886f3f" args="(const vec &amp;v) const " -->
99double&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classldmat.html#d64f331b781903e913cb2ee836886f3f">qform</a> (const vec &amp;v) const </td></tr>
100
101<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Evaluates quadratic form <img class="formulaInl" alt="$x= v'*V*v$" src="form_29.png">;. <br></td></tr>
102<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="d876c5f83e02b3e809b35c9de5068f14"></a><!-- doxytag: member="ldmat::invqform" ref="d876c5f83e02b3e809b35c9de5068f14" args="(const vec &amp;v) const " -->
103double&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classldmat.html#d876c5f83e02b3e809b35c9de5068f14">invqform</a> (const vec &amp;v) const </td></tr>
104
105<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Evaluates quadratic form <img class="formulaInl" alt="$x= v'*inv(V)*v$" src="form_30.png">;. <br></td></tr>
106<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="4d6e401de9607332305c27e67972a07a"></a><!-- doxytag: member="ldmat::clear" ref="4d6e401de9607332305c27e67972a07a" args="()" -->
107void&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classldmat.html#4d6e401de9607332305c27e67972a07a">clear</a> ()</td></tr>
108
109<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Clearing matrix so that it corresponds to zeros. <br></td></tr>
110<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="0fceb6b5b637cec89bb0a3d2e6be1306"></a><!-- doxytag: member="ldmat::cols" ref="0fceb6b5b637cec89bb0a3d2e6be1306" args="() const " -->
111int&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classldmat.html#0fceb6b5b637cec89bb0a3d2e6be1306">cols</a> () const </td></tr>
112
113<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">access function <br></td></tr>
114<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="96dfb21865db4f5bd36fa70f9b0b1163"></a><!-- doxytag: member="ldmat::rows" ref="96dfb21865db4f5bd36fa70f9b0b1163" args="() const " -->
115int&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classldmat.html#96dfb21865db4f5bd36fa70f9b0b1163">rows</a> () const </td></tr>
116
117<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">access function <br></td></tr>
118<tr><td class="memItemLeft" nowrap align="right" valign="top">vec&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classldmat.html#fc380626ced6f9244fb58c5f0231174d">sqrt_mult</a> (const vec &amp;v) const </td></tr>
119
120<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Multiplies square root of <img class="formulaInl" alt="$V$" src="form_27.png"> by vector <img class="formulaInl" alt="$x$" src="form_28.png">.  <a href="#fc380626ced6f9244fb58c5f0231174d"></a><br></td></tr>
121<tr><td class="memItemLeft" nowrap align="right" valign="top">virtual void&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classldmat.html#2c160cb123c1102face7a50ec566a031">inv</a> (<a class="el" href="classldmat.html">ldmat</a> &amp;Inv) const </td></tr>
122
123<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Matrix inversion preserving the chosen form.  <a href="#2c160cb123c1102face7a50ec566a031"></a><br></td></tr>
124<tr><td class="memItemLeft" nowrap align="right" valign="top">void&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classldmat.html#e7207748909325bb0f99b43f090a2b7e">mult_sym</a> (const mat &amp;C, <a class="el" href="classldmat.html">ldmat</a> &amp;U) const </td></tr>
125
126<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Symmetric multiplication of <img class="formulaInl" alt="$U$" src="form_31.png"> by a general matrix <img class="formulaInl" alt="$C$" src="form_24.png">, result of which is stored in the current class.  <a href="#e7207748909325bb0f99b43f090a2b7e"></a><br></td></tr>
127<tr><td class="memItemLeft" nowrap align="right" valign="top">void&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classldmat.html#f94dc3a233f3d40fc853d8d4ac3b8eab">mult_sym_t</a> (const mat &amp;C, <a class="el" href="classldmat.html">ldmat</a> &amp;U) const </td></tr>
128
129<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Symmetric multiplication of <img class="formulaInl" alt="$U$" src="form_31.png"> by a transpose of a general matrix <img class="formulaInl" alt="$C$" src="form_24.png">, result of which is stored in the current class.  <a href="#f94dc3a233f3d40fc853d8d4ac3b8eab"></a><br></td></tr>
130<tr><td class="memItemLeft" nowrap align="right" valign="top">void&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classldmat.html#f291faa073e7bc8dfafc7ae93daa2506">ldform</a> (const mat &amp;A, const vec &amp;D0)</td></tr>
131
132<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Transforms general <img class="formulaInl" alt="$A'D0 A$" src="form_32.png"> into pure <img class="formulaInl" alt="$L'DL$" src="form_33.png">.  <a href="#f291faa073e7bc8dfafc7ae93daa2506"></a><br></td></tr>
133<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="0884a613b94fde61bfc84288e73ce57f"></a><!-- doxytag: member="ldmat::setD" ref="0884a613b94fde61bfc84288e73ce57f" args="(const vec &amp;nD)" -->
134void&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classldmat.html#0884a613b94fde61bfc84288e73ce57f">setD</a> (const vec &amp;nD)</td></tr>
135
136<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Access functions. <br></td></tr>
137<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="7619922b4de18830ce5351c6b5667e60"></a><!-- doxytag: member="ldmat::setD" ref="7619922b4de18830ce5351c6b5667e60" args="(const vec &amp;nD, int i)" -->
138void&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classldmat.html#7619922b4de18830ce5351c6b5667e60">setD</a> (const vec &amp;nD, int i)</td></tr>
139
140<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Access functions. <br></td></tr>
141<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="32ff66296627ff5341d7c0b973249614"></a><!-- doxytag: member="ldmat::setL" ref="32ff66296627ff5341d7c0b973249614" args="(const vec &amp;nL)" -->
142void&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classldmat.html#32ff66296627ff5341d7c0b973249614">setL</a> (const vec &amp;nL)</td></tr>
143
144<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Access functions. <br></td></tr>
145<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="282c879f50aa9ef934e7f46d86881582"></a><!-- doxytag: member="ldmat::_D" ref="282c879f50aa9ef934e7f46d86881582" args="() const " -->
146const vec &amp;&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classldmat.html#282c879f50aa9ef934e7f46d86881582">_D</a> () const </td></tr>
147
148<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Access functions. <br></td></tr>
149<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="5f44f100248c6627314afaa653b9e5bd"></a><!-- doxytag: member="ldmat::_L" ref="5f44f100248c6627314afaa653b9e5bd" args="() const " -->
150const mat &amp;&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classldmat.html#5f44f100248c6627314afaa653b9e5bd">_L</a> () const </td></tr>
151
152<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Access functions. <br></td></tr>
153<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="el" href="classldmat.html">ldmat</a> &amp;&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classldmat.html#ca445ee152a56043af946ea095b2d8f8">operator+=</a> (const <a class="el" href="classldmat.html">ldmat</a> &amp;ldA)</td></tr>
154
155<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">add another <a class="el" href="classldmat.html" title="Matrix stored in LD form, (commonly known as UD).">ldmat</a> matrix  <a href="#ca445ee152a56043af946ea095b2d8f8"></a><br></td></tr>
156<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="el" href="classldmat.html">ldmat</a> &amp;&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classldmat.html#e3f4d2d85ab1ba384c852329aa31d0fb">operator-=</a> (const <a class="el" href="classldmat.html">ldmat</a> &amp;ldA)</td></tr>
157
158<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">subtract another <a class="el" href="classldmat.html" title="Matrix stored in LD form, (commonly known as UD).">ldmat</a> matrix  <a href="#e3f4d2d85ab1ba384c852329aa31d0fb"></a><br></td></tr>
159<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="875b7e6dcf73ae7001329099019fdb1d"></a><!-- doxytag: member="ldmat::operator*=" ref="875b7e6dcf73ae7001329099019fdb1d" args="(double x)" -->
160<a class="el" href="classldmat.html">ldmat</a> &amp;&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classldmat.html#875b7e6dcf73ae7001329099019fdb1d">operator*=</a> (double x)</td></tr>
161
162<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">multiply by a scalar <br></td></tr>
163<tr><td colspan="2"><br><h2>Protected Attributes</h2></td></tr>
164<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="4cce04824539c4a8d062d9a36d6e014e"></a><!-- doxytag: member="ldmat::D" ref="4cce04824539c4a8d062d9a36d6e014e" args="" -->
165vec&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classldmat.html#4cce04824539c4a8d062d9a36d6e014e">D</a></td></tr>
166
167<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Positive vector <img class="formulaInl" alt="$D$" src="form_22.png">. <br></td></tr>
168<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="f74a64b99fe58a75ebd37bb679e121ea"></a><!-- doxytag: member="ldmat::L" ref="f74a64b99fe58a75ebd37bb679e121ea" args="" -->
169mat&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classldmat.html#f74a64b99fe58a75ebd37bb679e121ea">L</a></td></tr>
170
171<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">Lower-triangular matrix <img class="formulaInl" alt="$L$" src="form_21.png">. <br></td></tr>
172<tr><td colspan="2"><br><h2>Friends</h2></td></tr>
173<tr><td class="memItemLeft" nowrap align="right" valign="top"><a class="anchor" name="eaaa0baa6026b84cfcbced41c84599d1"></a><!-- doxytag: member="ldmat::operator&lt;&lt;" ref="eaaa0baa6026b84cfcbced41c84599d1" args="(std::ostream &amp;os, const ldmat &amp;sq)" -->
174std::ostream &amp;&nbsp;</td><td class="memItemRight" valign="bottom"><a class="el" href="classldmat.html#eaaa0baa6026b84cfcbced41c84599d1">operator&lt;&lt;</a> (std::ostream &amp;os, const <a class="el" href="classldmat.html">ldmat</a> &amp;sq)</td></tr>
175
176<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">print both <code>L</code> and <code>D</code> <br></td></tr>
177</table>
178<hr><a name="_details"></a><h2>Detailed Description</h2>
179Matrix stored in LD form, (commonly known as UD).
180<p>
181Matrix is decomposed as follows: <p class="formulaDsp">
182<img class="formulaDsp" alt="\[M = L'DL\]" src="form_5.png">
183<p>
184 where only <img class="formulaInl" alt="$L$" src="form_21.png"> and <img class="formulaInl" alt="$D$" src="form_22.png"> matrices are stored. All inplace operations modifies only these and the need to compose and decompose the matrix is avoided. <hr><h2>Member Function Documentation</h2>
185<a class="anchor" name="0f0f6e083e6d947cf58097ffce3ccd1a"></a><!-- doxytag: member="ldmat::opupdt" ref="0f0f6e083e6d947cf58097ffce3ccd1a" args="(const vec &amp;v, double w)" -->
186<div class="memitem">
187<div class="memproto">
188      <table class="memname">
189        <tr>
190          <td class="memname">void ldmat::opupdt           </td>
191          <td>(</td>
192          <td class="paramtype">const vec &amp;&nbsp;</td>
193          <td class="paramname"> <em>v</em>, </td>
194        </tr>
195        <tr>
196          <td class="paramkey"></td>
197          <td></td>
198          <td class="paramtype">double&nbsp;</td>
199          <td class="paramname"> <em>w</em></td><td>&nbsp;</td>
200        </tr>
201        <tr>
202          <td></td>
203          <td>)</td>
204          <td></td><td></td><td><code> [virtual]</code></td>
205        </tr>
206      </table>
207</div>
208<div class="memdoc">
209
210<p>
211Perfroms a rank-1 update by outer product of vectors: <img class="formulaInl" alt="$V = V + w v v'$" src="form_23.png">. <dl compact><dt><b>Parameters:</b></dt><dd>
212  <table border="0" cellspacing="2" cellpadding="0">
213    <tr><td valign="top"></td><td valign="top"><em>v</em>&nbsp;</td><td>Vector forming the outer product to be added </td></tr>
214    <tr><td valign="top"></td><td valign="top"><em>w</em>&nbsp;</td><td>weight of updating; can be negative</td></tr>
215  </table>
216</dl>
217BLAS-2b operation.
218<p>Implements <a class="el" href="classsqmat.html#b223484796661f2dadb5607a86ce0581">sqmat</a>.</p>
219
220<p>References <a class="el" href="libDC_8h-source.html#l00266">D</a>, <a class="el" href="libDC_8h-source.html#l00100">sqmat::dim</a>, and <a class="el" href="libDC_8h-source.html#l00268">L</a>.</p>
221
222<p>Referenced by <a class="el" href="libDC_8cpp-source.html#l00104">add()</a>, <a class="el" href="bdm_2estim_2arx_8cpp-source.html#l00005">ARX::bayes()</a>, and <a class="el" href="bdm_2estim_2arx_8cpp-source.html#l00024">ARX::logpred()</a>.</p>
223
224</div>
225</div><p>
226<a class="anchor" name="e967b9425007f0cb6cd59b845f9756d8"></a><!-- doxytag: member="ldmat::mult_sym" ref="e967b9425007f0cb6cd59b845f9756d8" args="(const mat &amp;C)" -->
227<div class="memitem">
228<div class="memproto">
229      <table class="memname">
230        <tr>
231          <td class="memname">void ldmat::mult_sym           </td>
232          <td>(</td>
233          <td class="paramtype">const mat &amp;&nbsp;</td>
234          <td class="paramname"> <em>C</em>          </td>
235          <td>&nbsp;)&nbsp;</td>
236          <td><code> [virtual]</code></td>
237        </tr>
238      </table>
239</div>
240<div class="memdoc">
241
242<p>
243Inplace symmetric multiplication by a SQUARE matrix <img class="formulaInl" alt="$C$" src="form_24.png">, i.e. <img class="formulaInl" alt="$V = C*V*C'$" src="form_25.png">.
244<p>
245<dl compact><dt><b>Parameters:</b></dt><dd>
246  <table border="0" cellspacing="2" cellpadding="0">
247    <tr><td valign="top"></td><td valign="top"><em>C</em>&nbsp;</td><td>multiplying matrix, </td></tr>
248  </table>
249</dl>
250
251<p>Implements <a class="el" href="classsqmat.html#60fbbfa9e483b8187c135f787ee53afa">sqmat</a>.</p>
252
253<p>References <a class="el" href="libDC_8h-source.html#l00266">D</a>, <a class="el" href="libDC_8h-source.html#l00268">L</a>, and <a class="el" href="libDC_8cpp-source.html#l00200">ldform()</a>.</p>
254
255</div>
256</div><p>
257<a class="anchor" name="4fd155f38eb6dd5af4bdf9c98a7999a9"></a><!-- doxytag: member="ldmat::mult_sym_t" ref="4fd155f38eb6dd5af4bdf9c98a7999a9" args="(const mat &amp;C)" -->
258<div class="memitem">
259<div class="memproto">
260      <table class="memname">
261        <tr>
262          <td class="memname">void ldmat::mult_sym_t           </td>
263          <td>(</td>
264          <td class="paramtype">const mat &amp;&nbsp;</td>
265          <td class="paramname"> <em>C</em>          </td>
266          <td>&nbsp;)&nbsp;</td>
267          <td><code> [virtual]</code></td>
268        </tr>
269      </table>
270</div>
271<div class="memdoc">
272
273<p>
274Inplace symmetric multiplication by a SQUARE transpose of matrix <img class="formulaInl" alt="$C$" src="form_24.png">, i.e. <img class="formulaInl" alt="$V = C'*V*C$" src="form_26.png">.
275<p>
276<dl compact><dt><b>Parameters:</b></dt><dd>
277  <table border="0" cellspacing="2" cellpadding="0">
278    <tr><td valign="top"></td><td valign="top"><em>C</em>&nbsp;</td><td>multiplying matrix, </td></tr>
279  </table>
280</dl>
281
282<p>Implements <a class="el" href="classsqmat.html#6909e906da17725b1b80f3cae7cf3325">sqmat</a>.</p>
283
284<p>References <a class="el" href="libDC_8h-source.html#l00266">D</a>, <a class="el" href="libDC_8h-source.html#l00268">L</a>, and <a class="el" href="libDC_8cpp-source.html#l00200">ldform()</a>.</p>
285
286</div>
287</div><p>
288<a class="anchor" name="fc380626ced6f9244fb58c5f0231174d"></a><!-- doxytag: member="ldmat::sqrt_mult" ref="fc380626ced6f9244fb58c5f0231174d" args="(const vec &amp;v) const " -->
289<div class="memitem">
290<div class="memproto">
291      <table class="memname">
292        <tr>
293          <td class="memname">vec ldmat::sqrt_mult           </td>
294          <td>(</td>
295          <td class="paramtype">const vec &amp;&nbsp;</td>
296          <td class="paramname"> <em>v</em>          </td>
297          <td>&nbsp;)&nbsp;</td>
298          <td> const<code> [virtual]</code></td>
299        </tr>
300      </table>
301</div>
302<div class="memdoc">
303
304<p>
305Multiplies square root of <img class="formulaInl" alt="$V$" src="form_27.png"> by vector <img class="formulaInl" alt="$x$" src="form_28.png">.
306<p>
307Used e.g. in generating normal samples.
308<p>Implements <a class="el" href="classsqmat.html#6b79438b5d7544a9c8e110a145355d8f">sqmat</a>.</p>
309
310<p>References <a class="el" href="libDC_8h-source.html#l00266">D</a>, <a class="el" href="libDC_8h-source.html#l00100">sqmat::dim</a>, and <a class="el" href="libDC_8h-source.html#l00268">L</a>.</p>
311
312</div>
313</div><p>
314<a class="anchor" name="2c160cb123c1102face7a50ec566a031"></a><!-- doxytag: member="ldmat::inv" ref="2c160cb123c1102face7a50ec566a031" args="(ldmat &amp;Inv) const " -->
315<div class="memitem">
316<div class="memproto">
317      <table class="memname">
318        <tr>
319          <td class="memname">void ldmat::inv           </td>
320          <td>(</td>
321          <td class="paramtype"><a class="el" href="classldmat.html">ldmat</a> &amp;&nbsp;</td>
322          <td class="paramname"> <em>Inv</em>          </td>
323          <td>&nbsp;)&nbsp;</td>
324          <td> const<code> [virtual]</code></td>
325        </tr>
326      </table>
327</div>
328<div class="memdoc">
329
330<p>
331Matrix inversion preserving the chosen form.
332<p>
333<dl compact><dt><b>Parameters:</b></dt><dd>
334  <table border="0" cellspacing="2" cellpadding="0">
335    <tr><td valign="top"></td><td valign="top"><em>Inv</em>&nbsp;</td><td>a space where the inverse is stored. </td></tr>
336  </table>
337</dl>
338
339<p>References <a class="el" href="libDC_8cpp-source.html#l00116">clear()</a>, <a class="el" href="libDC_8h-source.html#l00266">D</a>, <a class="el" href="libDC_8h-source.html#l00268">L</a>, and <a class="el" href="libDC_8cpp-source.html#l00200">ldform()</a>.</p>
340
341</div>
342</div><p>
343<a class="anchor" name="e7207748909325bb0f99b43f090a2b7e"></a><!-- doxytag: member="ldmat::mult_sym" ref="e7207748909325bb0f99b43f090a2b7e" args="(const mat &amp;C, ldmat &amp;U) const " -->
344<div class="memitem">
345<div class="memproto">
346      <table class="memname">
347        <tr>
348          <td class="memname">void ldmat::mult_sym           </td>
349          <td>(</td>
350          <td class="paramtype">const mat &amp;&nbsp;</td>
351          <td class="paramname"> <em>C</em>, </td>
352        </tr>
353        <tr>
354          <td class="paramkey"></td>
355          <td></td>
356          <td class="paramtype"><a class="el" href="classldmat.html">ldmat</a> &amp;&nbsp;</td>
357          <td class="paramname"> <em>U</em></td><td>&nbsp;</td>
358        </tr>
359        <tr>
360          <td></td>
361          <td>)</td>
362          <td></td><td></td><td> const</td>
363        </tr>
364      </table>
365</div>
366<div class="memdoc">
367
368<p>
369Symmetric multiplication of <img class="formulaInl" alt="$U$" src="form_31.png"> by a general matrix <img class="formulaInl" alt="$C$" src="form_24.png">, result of which is stored in the current class.
370<p>
371<dl compact><dt><b>Parameters:</b></dt><dd>
372  <table border="0" cellspacing="2" cellpadding="0">
373    <tr><td valign="top"></td><td valign="top"><em>C</em>&nbsp;</td><td>matrix to multiply with </td></tr>
374    <tr><td valign="top"></td><td valign="top"><em>U</em>&nbsp;</td><td>a space where the inverse is stored. </td></tr>
375  </table>
376</dl>
377
378<p>References <a class="el" href="libDC_8h-source.html#l00266">D</a>, <a class="el" href="libDC_8h-source.html#l00268">L</a>, and <a class="el" href="libDC_8cpp-source.html#l00200">ldform()</a>.</p>
379
380</div>
381</div><p>
382<a class="anchor" name="f94dc3a233f3d40fc853d8d4ac3b8eab"></a><!-- doxytag: member="ldmat::mult_sym_t" ref="f94dc3a233f3d40fc853d8d4ac3b8eab" args="(const mat &amp;C, ldmat &amp;U) const " -->
383<div class="memitem">
384<div class="memproto">
385      <table class="memname">
386        <tr>
387          <td class="memname">void ldmat::mult_sym_t           </td>
388          <td>(</td>
389          <td class="paramtype">const mat &amp;&nbsp;</td>
390          <td class="paramname"> <em>C</em>, </td>
391        </tr>
392        <tr>
393          <td class="paramkey"></td>
394          <td></td>
395          <td class="paramtype"><a class="el" href="classldmat.html">ldmat</a> &amp;&nbsp;</td>
396          <td class="paramname"> <em>U</em></td><td>&nbsp;</td>
397        </tr>
398        <tr>
399          <td></td>
400          <td>)</td>
401          <td></td><td></td><td> const</td>
402        </tr>
403      </table>
404</div>
405<div class="memdoc">
406
407<p>
408Symmetric multiplication of <img class="formulaInl" alt="$U$" src="form_31.png"> by a transpose of a general matrix <img class="formulaInl" alt="$C$" src="form_24.png">, result of which is stored in the current class.
409<p>
410<dl compact><dt><b>Parameters:</b></dt><dd>
411  <table border="0" cellspacing="2" cellpadding="0">
412    <tr><td valign="top"></td><td valign="top"><em>C</em>&nbsp;</td><td>matrix to multiply with </td></tr>
413    <tr><td valign="top"></td><td valign="top"><em>U</em>&nbsp;</td><td>a space where the inverse is stored. </td></tr>
414  </table>
415</dl>
416
417<p>References <a class="el" href="libDC_8h-source.html#l00266">D</a>, <a class="el" href="libDC_8h-source.html#l00268">L</a>, and <a class="el" href="libDC_8cpp-source.html#l00200">ldform()</a>.</p>
418
419</div>
420</div><p>
421<a class="anchor" name="f291faa073e7bc8dfafc7ae93daa2506"></a><!-- doxytag: member="ldmat::ldform" ref="f291faa073e7bc8dfafc7ae93daa2506" args="(const mat &amp;A, const vec &amp;D0)" -->
422<div class="memitem">
423<div class="memproto">
424      <table class="memname">
425        <tr>
426          <td class="memname">void ldmat::ldform           </td>
427          <td>(</td>
428          <td class="paramtype">const mat &amp;&nbsp;</td>
429          <td class="paramname"> <em>A</em>, </td>
430        </tr>
431        <tr>
432          <td class="paramkey"></td>
433          <td></td>
434          <td class="paramtype">const vec &amp;&nbsp;</td>
435          <td class="paramname"> <em>D0</em></td><td>&nbsp;</td>
436        </tr>
437        <tr>
438          <td></td>
439          <td>)</td>
440          <td></td><td></td><td></td>
441        </tr>
442      </table>
443</div>
444<div class="memdoc">
445
446<p>
447Transforms general <img class="formulaInl" alt="$A'D0 A$" src="form_32.png"> into pure <img class="formulaInl" alt="$L'DL$" src="form_33.png">.
448<p>
449The new decomposition fullfills: <img class="formulaInl" alt="$A'*diag(D)*A = self.L'*diag(self.D)*self.L$" src="form_34.png"> <dl compact><dt><b>Parameters:</b></dt><dd>
450  <table border="0" cellspacing="2" cellpadding="0">
451    <tr><td valign="top"></td><td valign="top"><em>A</em>&nbsp;</td><td>general matrix </td></tr>
452    <tr><td valign="top"></td><td valign="top"><em>D0</em>&nbsp;</td><td>general vector </td></tr>
453  </table>
454</dl>
455
456<p>References <a class="el" href="libDC_8h-source.html#l00266">D</a>, <a class="el" href="libDC_8h-source.html#l00100">sqmat::dim</a>, and <a class="el" href="libDC_8h-source.html#l00268">L</a>.</p>
457
458<p>Referenced by <a class="el" href="libDC_8cpp-source.html#l00118">inv()</a>, <a class="el" href="libDC_8cpp-source.html#l00046">ldmat()</a>, <a class="el" href="libDC_8cpp-source.html#l00125">mult_sym()</a>, and <a class="el" href="libDC_8cpp-source.html#l00130">mult_sym_t()</a>.</p>
459
460</div>
461</div><p>
462<a class="anchor" name="ca445ee152a56043af946ea095b2d8f8"></a><!-- doxytag: member="ldmat::operator+=" ref="ca445ee152a56043af946ea095b2d8f8" args="(const ldmat &amp;ldA)" -->
463<div class="memitem">
464<div class="memproto">
465      <table class="memname">
466        <tr>
467          <td class="memname"><a class="el" href="classldmat.html">ldmat</a> &amp; ldmat::operator+=           </td>
468          <td>(</td>
469          <td class="paramtype">const <a class="el" href="classldmat.html">ldmat</a> &amp;&nbsp;</td>
470          <td class="paramname"> <em>ldA</em>          </td>
471          <td>&nbsp;)&nbsp;</td>
472          <td><code> [inline]</code></td>
473        </tr>
474      </table>
475</div>
476<div class="memdoc">
477
478<p>
479add another <a class="el" href="classldmat.html" title="Matrix stored in LD form, (commonly known as UD).">ldmat</a> matrix
480<p>
481Operations: mapping of add operation to operators
482</div>
483</div><p>
484<a class="anchor" name="e3f4d2d85ab1ba384c852329aa31d0fb"></a><!-- doxytag: member="ldmat::operator-=" ref="e3f4d2d85ab1ba384c852329aa31d0fb" args="(const ldmat &amp;ldA)" -->
485<div class="memitem">
486<div class="memproto">
487      <table class="memname">
488        <tr>
489          <td class="memname"><a class="el" href="classldmat.html">ldmat</a> &amp; ldmat::operator-=           </td>
490          <td>(</td>
491          <td class="paramtype">const <a class="el" href="classldmat.html">ldmat</a> &amp;&nbsp;</td>
492          <td class="paramname"> <em>ldA</em>          </td>
493          <td>&nbsp;)&nbsp;</td>
494          <td><code> [inline]</code></td>
495        </tr>
496      </table>
497</div>
498<div class="memdoc">
499
500<p>
501subtract another <a class="el" href="classldmat.html" title="Matrix stored in LD form, (commonly known as UD).">ldmat</a> matrix
502<p>
503mapping of negative add operation to operators
504</div>
505</div><p>
506<hr>The documentation for this class was generated from the following files:<ul>
507<li>work/git/mixpp/bdm/math/<a class="el" href="libDC_8h-source.html">libDC.h</a><li>work/git/mixpp/bdm/math/libDC.cpp</ul>
508</div>
509<hr size="1"><address style="text-align: right;"><small>Generated on Wed Oct 15 15:57:15 2008 for mixpp by&nbsp;
510<a href="http://www.doxygen.org/index.html">
511<img src="doxygen.png" alt="doxygen" align="middle" border="0"></a> 1.5.6 </small></address>
512</body>
513</html>
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