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<title>linbox: BlasPermutation< _UnsignedInt > Class Template Reference</title>
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<li class="navelem"><a class="el" href="namespace_lin_box.html">LinBox</a> </li>
<li class="navelem"><a class="el" href="class_lin_box_1_1_blas_permutation.html">BlasPermutation</a> </li>
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<a href="#pub-methods">Public Member Functions</a> |
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<div class="title">BlasPermutation< _UnsignedInt > Class Template Reference</div> </div>
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<!-- doxytag: class="LinBox::BlasPermutation" -->
<p>Lapack-style permutation.
<a href="class_lin_box_1_1_blas_permutation.html#details">More...</a></p>
<p><code>#include <matrix-permutation.h></code></p>
<table class="memberdecls">
<tr><td colspan="2"><h2><a name="pub-methods"></a>
Public Member Functions</h2></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">_UnsignedInt </td><td class="memItemRight" valign="bottom"><a class="el" href="class_lin_box_1_1_blas_permutation.html#aa30987b55cee0f7e5b4904ae55188825">getSize</a> () const </td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="el" href="class_lin_box_1_1_matrix_permutation.html">MatrixPermutation</a>< _UnsignedInt > & </td><td class="memItemRight" valign="bottom"><a class="el" href="class_lin_box_1_1_blas_permutation.html#a2255bc8a7db43842d45cb908746dde34">Convert</a> (<a class="el" href="class_lin_box_1_1_matrix_permutation.html">MatrixPermutation</a>< _UnsignedInt > &P)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">Converts a <code><a class="el" href="class_lin_box_1_1_blas_permutation.html" title="Lapack-style permutation.">BlasPermutation</a></code> to a <code><a class="el" href="class_lin_box_1_1_matrix_permutation.html" title="Permutation classique.">MatrixPermutation</a></code>. <a href="#a2255bc8a7db43842d45cb908746dde34"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">_UnsignedInt </td><td class="memItemRight" valign="bottom"><a class="el" href="class_lin_box_1_1_blas_permutation.html#a0fff1b49e74b83315ec873841b3a46ed">operator[]</a> (const _UnsignedInt i) const </td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight"><img class="formulaInl" alt="$ M \gets P M$" src="form_64.png"/> <a href="#a0fff1b49e74b83315ec873841b3a46ed"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top">const _UnsignedInt * </td><td class="memItemRight" valign="bottom"><a class="el" href="class_lin_box_1_1_blas_permutation.html#a593a7496727ce80d336e9931a9003ef9">getPointer</a> () const </td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">col <code>i</code> and col <code>j</code> are swapped <a href="#a593a7496727ce80d336e9931a9003ef9"></a><br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a0ba9edee3fd93ac653cee4e428b6e93e"></a><!-- doxytag: member="LinBox::BlasPermutation::Compress" ref="a0ba9edee3fd93ac653cee4e428b6e93e" args="()" -->
void </td><td class="memItemRight" valign="bottom"><a class="el" href="class_lin_box_1_1_blas_permutation.html#a0ba9edee3fd93ac653cee4e428b6e93e">Compress</a> ()</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">compresses <a class="el" href="class_lin_box_1_1_blas_permutation.html" title="Lapack-style permutation.">BlasPermutation</a> to a smaller <code>r_</code>. <br/></td></tr>
<tr><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="aa878964fff4946cc135175758bb7adfc"></a><!-- doxytag: member="LinBox::BlasPermutation::write" ref="aa878964fff4946cc135175758bb7adfc" args="(std::ostream &o, bool Lapack=true) const " -->
std::ostream & </td><td class="memItemRight" valign="bottom"><a class="el" href="class_lin_box_1_1_blas_permutation.html#aa878964fff4946cc135175758bb7adfc">write</a> (std::ostream &o, bool Lapack=true) const </td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">writes on output stream <code>o</code> <br/></td></tr>
<tr><td colspan="2"><h2><a name="friends"></a>
Friends</h2></td></tr>
<tr><td class="memTemplParams" colspan="2"><a class="anchor" id="a634e195b7ad8eebdb4daa838275f7d3b"></a><!-- doxytag: member="LinBox::BlasPermutation::operator<<" ref="a634e195b7ad8eebdb4daa838275f7d3b" args="(std::ostream &o, BlasPerm &P)" -->
template<class _Uint > </td></tr>
<tr><td class="memTemplItemLeft" align="right" valign="top">std::ostream & </td><td class="memTemplItemRight" valign="bottom"><a class="el" href="class_lin_box_1_1_blas_permutation.html#a634e195b7ad8eebdb4daa838275f7d3b">operator<<</a> (std::ostream &o, <a class="el" href="class_lin_box_1_1_blas_permutation.html">BlasPerm</a> &P)</td></tr>
<tr><td class="mdescLeft"> </td><td class="mdescRight">writes <code>P</code> on output stream <code>o</code> <br/></td></tr>
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<hr/><a name="details" id="details"></a><h2>Detailed Description</h2>
<div class="textblock"><h3>template<class _UnsignedInt><br/>
class LinBox::BlasPermutation< _UnsignedInt ></h3>
<p>Lapack-style permutation. </p>
<p>A Lapack permutation is represented with a vector <img class="formulaInl" alt="$[p_1,p_2,\cdots, p_r]$" src="form_61.png"/> such that <img class="formulaInl" alt="$p_i > i$" src="form_62.png"/>. Converting it to a classic representation of a permutation corresponds to taking an identity permutation and then successively permuting <img class="formulaInl" alt="$(i,p_i)$" src="form_63.png"/>. Example : if <code>P=[1,4,4]</code> and <code>V=[1,2,3,4,5]</code>, then <code>P.V=[1,4,2,3,5]</code>. </p>
</div><hr/><h2>Member Function Documentation</h2>
<a class="anchor" id="aa30987b55cee0f7e5b4904ae55188825"></a><!-- doxytag: member="LinBox::BlasPermutation::getSize" ref="aa30987b55cee0f7e5b4904ae55188825" args="() const " -->
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<td class="memname">_Uint getSize </td>
<td>(</td>
<td class="paramname"></td><td>)</td>
<td> const</td>
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<p><dl class="warning"><dt><b>Warning:</b></dt><dd>potentially catastrophic </dd></dl>
</p>
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<a class="anchor" id="a2255bc8a7db43842d45cb908746dde34"></a><!-- doxytag: member="LinBox::BlasPermutation::Convert" ref="a2255bc8a7db43842d45cb908746dde34" args="(MatrixPermutation< _UnsignedInt > &P)" -->
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<td class="memname"><a class="el" href="class_lin_box_1_1_matrix_permutation.html">MatrixPermutation</a>< _Uint > & Convert </td>
<td>(</td>
<td class="paramtype"><a class="el" href="class_lin_box_1_1_matrix_permutation.html">MatrixPermutation</a>< _Uint > & </td>
<td class="paramname"><em>P</em></td><td>)</td>
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<p>Converts a <code><a class="el" href="class_lin_box_1_1_blas_permutation.html" title="Lapack-style permutation.">BlasPermutation</a></code> to a <code><a class="el" href="class_lin_box_1_1_matrix_permutation.html" title="Permutation classique.">MatrixPermutation</a></code>. </p>
<dl><dt><b>Parameters:</b></dt><dd>
<table class="params">
<tr><td class="paramdir">[out]</td><td class="paramname">P</td><td><a class="el" href="class_lin_box_1_1_matrix_permutation.html" title="Permutation classique.">MatrixPermutation</a> to be created. Need not be initialized. </td></tr>
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</dd>
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<a class="anchor" id="a0fff1b49e74b83315ec873841b3a46ed"></a><!-- doxytag: member="LinBox::BlasPermutation::operator[]" ref="a0fff1b49e74b83315ec873841b3a46ed" args="(const _UnsignedInt i) const " -->
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<td class="memname">_Uint operator[] </td>
<td>(</td>
<td class="paramtype">const _Uint </td>
<td class="paramname"><em>i</em></td><td>)</td>
<td> const<code> [inline]</code></td>
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<p><img class="formulaInl" alt="$ M \gets P M$" src="form_64.png"/> </p>
<p><img class="formulaInl" alt="$ M \gets M P$" src="form_65.png"/></p>
<p><img class="formulaInl" alt="$ M \gets M P^t$" src="form_66.png"/></p>
<p><img class="formulaInl" alt="$ M \gets P^t M$" src="form_67.png"/> </p>
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<a class="anchor" id="a593a7496727ce80d336e9931a9003ef9"></a><!-- doxytag: member="LinBox::BlasPermutation::getPointer" ref="a593a7496727ce80d336e9931a9003ef9" args="() const " -->
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<td class="memname">const _UnsignedInt* getPointer </td>
<td>(</td>
<td class="paramname"></td><td>)</td>
<td> const<code> [inline]</code></td>
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<p>col <code>i</code> and col <code>j</code> are swapped </p>
<p>row <code>i</code> and row <code>j</code> are swapped </p>
</div>
</div>
<hr/>The documentation for this class was generated from the following files:<ul>
<li><a class="el" href="matrix-permutation_8h.html">matrix-permutation.h</a></li>
<li><a class="el" href="matrix-permutation_8inl.html">matrix-permutation.inl</a></li>
</ul>
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