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<div class="title">IterativeSolverBase.h</div> </div>
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<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="comment">// This file is part of Eigen, a lightweight C++ template library</span></div>
<div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment">// for linear algebra.</span></div>
<div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment">//</span></div>
<div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment">// Copyright (C) 2011 Gael Guennebaud <gael.guennebaud@inria.fr></span></div>
<div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment">//</span></div>
<div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment">// This Source Code Form is subject to the terms of the Mozilla</span></div>
<div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment">// Public License v. 2.0. If a copy of the MPL was not distributed</span></div>
<div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment">// with this file, You can obtain one at http://mozilla.org/MPL/2.0/.</span></div>
<div class="line"><a name="l00009"></a><span class="lineno"> 9</span> </div>
<div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="preprocessor">#ifndef EIGEN_ITERATIVE_SOLVER_BASE_H</span></div>
<div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="preprocessor"></span><span class="preprocessor">#define EIGEN_ITERATIVE_SOLVER_BASE_H</span></div>
<div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="keyword">namespace </span>Eigen { </div>
<div class="line"><a name="l00014"></a><span class="lineno"> 14</span> </div>
<div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="keyword">template</span>< <span class="keyword">typename</span> Derived></div>
<div class="line"><a name="l00021"></a><span class="lineno"><a class="line" href="classEigen_1_1IterativeSolverBase.html"> 21</a></span> <span class="keyword">class </span><a class="code" href="classEigen_1_1IterativeSolverBase.html">IterativeSolverBase</a> : internal::noncopyable</div>
<div class="line"><a name="l00022"></a><span class="lineno"> 22</span> {</div>
<div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="keyword">public</span>:</div>
<div class="line"><a name="l00024"></a><span class="lineno"> 24</span>  <span class="keyword">typedef</span> <span class="keyword">typename</span> internal::traits<Derived>::MatrixType MatrixType;</div>
<div class="line"><a name="l00025"></a><span class="lineno"> 25</span>  <span class="keyword">typedef</span> <span class="keyword">typename</span> internal::traits<Derived>::Preconditioner Preconditioner;</div>
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span>  <span class="keyword">typedef</span> <span class="keyword">typename</span> MatrixType::Scalar Scalar;</div>
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span>  <span class="keyword">typedef</span> <span class="keyword">typename</span> MatrixType::Index Index;</div>
<div class="line"><a name="l00028"></a><span class="lineno"> 28</span>  <span class="keyword">typedef</span> <span class="keyword">typename</span> MatrixType::RealScalar RealScalar;</div>
<div class="line"><a name="l00029"></a><span class="lineno"> 29</span> </div>
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="keyword">public</span>:</div>
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span> </div>
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span>  Derived& derived() { <span class="keywordflow">return</span> *<span class="keyword">static_cast<</span>Derived*<span class="keyword">></span>(<span class="keyword">this</span>); }</div>
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span>  <span class="keyword">const</span> Derived& derived()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> *<span class="keyword">static_cast<</span><span class="keyword">const </span>Derived*<span class="keyword">></span>(<span class="keyword">this</span>); }</div>
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span> </div>
<div class="line"><a name="l00036"></a><span class="lineno"><a class="line" href="classEigen_1_1IterativeSolverBase.html#a5140d3e2be1561de7f003504ef1be45d"> 36</a></span>  <a class="code" href="classEigen_1_1IterativeSolverBase.html#a5140d3e2be1561de7f003504ef1be45d">IterativeSolverBase</a>()</div>
<div class="line"><a name="l00037"></a><span class="lineno"> 37</span>  : mp_matrix(0)</div>
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span>  {</div>
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span>  init();</div>
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span>  }</div>
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span> </div>
<div class="line"><a name="l00052"></a><span class="lineno"><a class="line" href="classEigen_1_1IterativeSolverBase.html#a81b1c0c3c9d19709b15e03a47ea90ef0"> 52</a></span>  <a class="code" href="classEigen_1_1IterativeSolverBase.html#a81b1c0c3c9d19709b15e03a47ea90ef0">IterativeSolverBase</a>(<span class="keyword">const</span> MatrixType& A)</div>
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  {</div>
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  init();</div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  <a class="code" href="classEigen_1_1IterativeSolverBase.html#a693a8142a905e7130bacd77586a6f6a0">compute</a>(A);</div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  }</div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span> </div>
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  ~<a class="code" href="classEigen_1_1IterativeSolverBase.html">IterativeSolverBase</a>() {}</div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  </div>
<div class="line"><a name="l00065"></a><span class="lineno"><a class="line" href="classEigen_1_1IterativeSolverBase.html#ae044142449c071af13afc4fbbe633682"> 65</a></span>  Derived& <a class="code" href="classEigen_1_1IterativeSolverBase.html#ae044142449c071af13afc4fbbe633682">analyzePattern</a>(<span class="keyword">const</span> MatrixType& A)</div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  {</div>
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  m_preconditioner.analyzePattern(A);</div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  m_isInitialized = <span class="keyword">true</span>;</div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  m_analysisIsOk = <span class="keyword">true</span>;</div>
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  m_info = <a class="code" href="group__enums.html#gga51bc1ac16f26ebe51eae1abb77bd037bafdfbdf3247bd36a1f17270d5cec74c9c">Success</a>;</div>
<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  <span class="keywordflow">return</span> derived();</div>
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  }</div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  </div>
<div class="line"><a name="l00083"></a><span class="lineno"><a class="line" href="classEigen_1_1IterativeSolverBase.html#ab837a9d99eea1f79dd4721727ef98d37"> 83</a></span>  Derived& <a class="code" href="classEigen_1_1IterativeSolverBase.html#ab837a9d99eea1f79dd4721727ef98d37">factorize</a>(<span class="keyword">const</span> MatrixType& A)</div>
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  {</div>
<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  eigen_assert(m_analysisIsOk && <span class="stringliteral">"You must first call analyzePattern()"</span>); </div>
<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  mp_matrix = &A;</div>
<div class="line"><a name="l00087"></a><span class="lineno"> 87</span>  m_preconditioner.factorize(A);</div>
<div class="line"><a name="l00088"></a><span class="lineno"> 88</span>  m_factorizationIsOk = <span class="keyword">true</span>;</div>
<div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  m_info = <a class="code" href="group__enums.html#gga51bc1ac16f26ebe51eae1abb77bd037bafdfbdf3247bd36a1f17270d5cec74c9c">Success</a>;</div>
<div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  <span class="keywordflow">return</span> derived();</div>
<div class="line"><a name="l00091"></a><span class="lineno"> 91</span>  }</div>
<div class="line"><a name="l00092"></a><span class="lineno"> 92</span> </div>
<div class="line"><a name="l00103"></a><span class="lineno"><a class="line" href="classEigen_1_1IterativeSolverBase.html#a693a8142a905e7130bacd77586a6f6a0"> 103</a></span>  Derived& <a class="code" href="classEigen_1_1IterativeSolverBase.html#a693a8142a905e7130bacd77586a6f6a0">compute</a>(<span class="keyword">const</span> MatrixType& A)</div>
<div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  {</div>
<div class="line"><a name="l00105"></a><span class="lineno"> 105</span>  mp_matrix = &A;</div>
<div class="line"><a name="l00106"></a><span class="lineno"> 106</span>  m_preconditioner.compute(A);</div>
<div class="line"><a name="l00107"></a><span class="lineno"> 107</span>  m_isInitialized = <span class="keyword">true</span>;</div>
<div class="line"><a name="l00108"></a><span class="lineno"> 108</span>  m_analysisIsOk = <span class="keyword">true</span>;</div>
<div class="line"><a name="l00109"></a><span class="lineno"> 109</span>  m_factorizationIsOk = <span class="keyword">true</span>;</div>
<div class="line"><a name="l00110"></a><span class="lineno"> 110</span>  m_info = <a class="code" href="group__enums.html#gga51bc1ac16f26ebe51eae1abb77bd037bafdfbdf3247bd36a1f17270d5cec74c9c">Success</a>;</div>
<div class="line"><a name="l00111"></a><span class="lineno"> 111</span>  <span class="keywordflow">return</span> derived();</div>
<div class="line"><a name="l00112"></a><span class="lineno"> 112</span>  }</div>
<div class="line"><a name="l00113"></a><span class="lineno"> 113</span> </div>
<div class="line"><a name="l00115"></a><span class="lineno"> 115</span>  Index rows()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> mp_matrix ? mp_matrix->rows() : 0; }</div>
<div class="line"><a name="l00117"></a><span class="lineno"> 117</span>  Index cols()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> mp_matrix ? mp_matrix->cols() : 0; }</div>
<div class="line"><a name="l00118"></a><span class="lineno"> 118</span> </div>
<div class="line"><a name="l00120"></a><span class="lineno"><a class="line" href="classEigen_1_1IterativeSolverBase.html#aab135f12fadf495a511f20c71557e1aa"> 120</a></span>  RealScalar <a class="code" href="classEigen_1_1IterativeSolverBase.html#aab135f12fadf495a511f20c71557e1aa">tolerance</a>()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> m_tolerance; }</div>
<div class="line"><a name="l00121"></a><span class="lineno"> 121</span>  </div>
<div class="line"><a name="l00123"></a><span class="lineno"><a class="line" href="classEigen_1_1IterativeSolverBase.html#a39b43ecdc61211a15d1e986e28a03513"> 123</a></span>  Derived& <a class="code" href="classEigen_1_1IterativeSolverBase.html#a39b43ecdc61211a15d1e986e28a03513">setTolerance</a>(<span class="keyword">const</span> RealScalar& <a class="code" href="classEigen_1_1IterativeSolverBase.html#aab135f12fadf495a511f20c71557e1aa">tolerance</a>)</div>
<div class="line"><a name="l00124"></a><span class="lineno"> 124</span>  {</div>
<div class="line"><a name="l00125"></a><span class="lineno"> 125</span>  m_tolerance = <a class="code" href="classEigen_1_1IterativeSolverBase.html#aab135f12fadf495a511f20c71557e1aa">tolerance</a>;</div>
<div class="line"><a name="l00126"></a><span class="lineno"> 126</span>  <span class="keywordflow">return</span> derived();</div>
<div class="line"><a name="l00127"></a><span class="lineno"> 127</span>  }</div>
<div class="line"><a name="l00128"></a><span class="lineno"> 128</span> </div>
<div class="line"><a name="l00130"></a><span class="lineno"><a class="line" href="classEigen_1_1IterativeSolverBase.html#ae4bec7fa55f17f7bb64b6b2fc4039b58"> 130</a></span>  Preconditioner& <a class="code" href="classEigen_1_1IterativeSolverBase.html#ae4bec7fa55f17f7bb64b6b2fc4039b58">preconditioner</a>() { <span class="keywordflow">return</span> m_preconditioner; }</div>
<div class="line"><a name="l00131"></a><span class="lineno"> 131</span>  </div>
<div class="line"><a name="l00133"></a><span class="lineno"><a class="line" href="classEigen_1_1IterativeSolverBase.html#a11aed1f82ecbec6d7436915c6d804d7a"> 133</a></span>  <span class="keyword">const</span> Preconditioner& <a class="code" href="classEigen_1_1IterativeSolverBase.html#a11aed1f82ecbec6d7436915c6d804d7a">preconditioner</a>()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> m_preconditioner; }</div>
<div class="line"><a name="l00134"></a><span class="lineno"> 134</span> </div>
<div class="line"><a name="l00136"></a><span class="lineno"><a class="line" href="classEigen_1_1IterativeSolverBase.html#a9c020a2e26d3081eeff611b802962530"> 136</a></span>  <span class="keywordtype">int</span> <a class="code" href="classEigen_1_1IterativeSolverBase.html#a9c020a2e26d3081eeff611b802962530">maxIterations</a>()<span class="keyword"> const</span></div>
<div class="line"><a name="l00137"></a><span class="lineno"> 137</span> <span class="keyword"> </span>{</div>
<div class="line"><a name="l00138"></a><span class="lineno"> 138</span>  <span class="keywordflow">return</span> (mp_matrix && m_maxIterations<0) ? mp_matrix->cols() : m_maxIterations;</div>
<div class="line"><a name="l00139"></a><span class="lineno"> 139</span>  }</div>
<div class="line"><a name="l00140"></a><span class="lineno"> 140</span>  </div>
<div class="line"><a name="l00142"></a><span class="lineno"><a class="line" href="classEigen_1_1IterativeSolverBase.html#ad9aa2f8ecfda11aba72cfd3c5eefae20"> 142</a></span>  Derived& <a class="code" href="classEigen_1_1IterativeSolverBase.html#ad9aa2f8ecfda11aba72cfd3c5eefae20">setMaxIterations</a>(<span class="keywordtype">int</span> maxIters)</div>
<div class="line"><a name="l00143"></a><span class="lineno"> 143</span>  {</div>
<div class="line"><a name="l00144"></a><span class="lineno"> 144</span>  m_maxIterations = maxIters;</div>
<div class="line"><a name="l00145"></a><span class="lineno"> 145</span>  <span class="keywordflow">return</span> derived();</div>
<div class="line"><a name="l00146"></a><span class="lineno"> 146</span>  }</div>
<div class="line"><a name="l00147"></a><span class="lineno"> 147</span> </div>
<div class="line"><a name="l00149"></a><span class="lineno"><a class="line" href="classEigen_1_1IterativeSolverBase.html#a07c5f1fe9fa1556edc79452b52839829"> 149</a></span>  <span class="keywordtype">int</span> <a class="code" href="classEigen_1_1IterativeSolverBase.html#a07c5f1fe9fa1556edc79452b52839829">iterations</a>()<span class="keyword"> const</span></div>
<div class="line"><a name="l00150"></a><span class="lineno"> 150</span> <span class="keyword"> </span>{</div>
<div class="line"><a name="l00151"></a><span class="lineno"> 151</span>  eigen_assert(m_isInitialized && <span class="stringliteral">"ConjugateGradient is not initialized."</span>);</div>
<div class="line"><a name="l00152"></a><span class="lineno"> 152</span>  <span class="keywordflow">return</span> m_iterations;</div>
<div class="line"><a name="l00153"></a><span class="lineno"> 153</span>  }</div>
<div class="line"><a name="l00154"></a><span class="lineno"> 154</span> </div>
<div class="line"><a name="l00156"></a><span class="lineno"><a class="line" href="classEigen_1_1IterativeSolverBase.html#a736349b3462f6ebf37c34b450db2ed18"> 156</a></span>  RealScalar <a class="code" href="classEigen_1_1IterativeSolverBase.html#a736349b3462f6ebf37c34b450db2ed18">error</a>()<span class="keyword"> const</span></div>
<div class="line"><a name="l00157"></a><span class="lineno"> 157</span> <span class="keyword"> </span>{</div>
<div class="line"><a name="l00158"></a><span class="lineno"> 158</span>  eigen_assert(m_isInitialized && <span class="stringliteral">"ConjugateGradient is not initialized."</span>);</div>
<div class="line"><a name="l00159"></a><span class="lineno"> 159</span>  <span class="keywordflow">return</span> m_error;</div>
<div class="line"><a name="l00160"></a><span class="lineno"> 160</span>  }</div>
<div class="line"><a name="l00161"></a><span class="lineno"> 161</span> </div>
<div class="line"><a name="l00166"></a><span class="lineno"> 166</span>  <span class="keyword">template</span><<span class="keyword">typename</span> Rhs> <span class="keyword">inline</span> <span class="keyword">const</span> internal::solve_retval<Derived, Rhs></div>
<div class="line"><a name="l00167"></a><span class="lineno"><a class="line" href="classEigen_1_1IterativeSolverBase.html#acae1088225b7c746b16848d02d5e1c2a"> 167</a></span>  <a class="code" href="classEigen_1_1IterativeSolverBase.html#acae1088225b7c746b16848d02d5e1c2a">solve</a>(<span class="keyword">const</span> <a class="code" href="classEigen_1_1MatrixBase.html">MatrixBase<Rhs></a>& b)<span class="keyword"> const</span></div>
<div class="line"><a name="l00168"></a><span class="lineno"> 168</span> <span class="keyword"> </span>{</div>
<div class="line"><a name="l00169"></a><span class="lineno"> 169</span>  eigen_assert(m_isInitialized && <span class="stringliteral">"IterativeSolverBase is not initialized."</span>);</div>
<div class="line"><a name="l00170"></a><span class="lineno"> 170</span>  eigen_assert(rows()==b.rows()</div>
<div class="line"><a name="l00171"></a><span class="lineno"> 171</span>  && <span class="stringliteral">"IterativeSolverBase::solve(): invalid number of rows of the right hand side matrix b"</span>);</div>
<div class="line"><a name="l00172"></a><span class="lineno"> 172</span>  <span class="keywordflow">return</span> internal::solve_retval<Derived, Rhs>(derived(), b.derived());</div>
<div class="line"><a name="l00173"></a><span class="lineno"> 173</span>  }</div>
<div class="line"><a name="l00174"></a><span class="lineno"> 174</span>  </div>
<div class="line"><a name="l00179"></a><span class="lineno"> 179</span>  <span class="keyword">template</span><<span class="keyword">typename</span> Rhs></div>
<div class="line"><a name="l00180"></a><span class="lineno"> 180</span>  <span class="keyword">inline</span> <span class="keyword">const</span> internal::sparse_solve_retval<IterativeSolverBase, Rhs></div>
<div class="line"><a name="l00181"></a><span class="lineno"><a class="line" href="classEigen_1_1IterativeSolverBase.html#a7892f6fbc52bfa658e1324a63d376d1c"> 181</a></span>  <a class="code" href="classEigen_1_1IterativeSolverBase.html#a7892f6fbc52bfa658e1324a63d376d1c">solve</a>(<span class="keyword">const</span> <a class="code" href="classEigen_1_1SparseMatrixBase.html">SparseMatrixBase<Rhs></a>& b)<span class="keyword"> const</span></div>
<div class="line"><a name="l00182"></a><span class="lineno"> 182</span> <span class="keyword"> </span>{</div>
<div class="line"><a name="l00183"></a><span class="lineno"> 183</span>  eigen_assert(m_isInitialized && <span class="stringliteral">"IterativeSolverBase is not initialized."</span>);</div>
<div class="line"><a name="l00184"></a><span class="lineno"> 184</span>  eigen_assert(rows()==b.<a class="code" href="classEigen_1_1SparseMatrixBase.html#a5552abd83dbd03c85cea6d61fd8875a5">rows</a>()</div>
<div class="line"><a name="l00185"></a><span class="lineno"> 185</span>  && <span class="stringliteral">"IterativeSolverBase::solve(): invalid number of rows of the right hand side matrix b"</span>);</div>
<div class="line"><a name="l00186"></a><span class="lineno"> 186</span>  <span class="keywordflow">return</span> internal::sparse_solve_retval<IterativeSolverBase, Rhs>(*<span class="keyword">this</span>, b.<a class="code" href="structEigen_1_1EigenBase.html#aa84222add803ad7c9db07dd4dd91d5d9">derived</a>());</div>
<div class="line"><a name="l00187"></a><span class="lineno"> 187</span>  }</div>
<div class="line"><a name="l00188"></a><span class="lineno"> 188</span> </div>
<div class="line"><a name="l00190"></a><span class="lineno"><a class="line" href="classEigen_1_1IterativeSolverBase.html#a0c06d5c2034ebb329c54235369643ad2"> 190</a></span>  <a class="code" href="group__enums.html#ga51bc1ac16f26ebe51eae1abb77bd037b">ComputationInfo</a> <a class="code" href="classEigen_1_1IterativeSolverBase.html#a0c06d5c2034ebb329c54235369643ad2">info</a>()<span class="keyword"> const</span></div>
<div class="line"><a name="l00191"></a><span class="lineno"> 191</span> <span class="keyword"> </span>{</div>
<div class="line"><a name="l00192"></a><span class="lineno"> 192</span>  eigen_assert(m_isInitialized && <span class="stringliteral">"IterativeSolverBase is not initialized."</span>);</div>
<div class="line"><a name="l00193"></a><span class="lineno"> 193</span>  <span class="keywordflow">return</span> m_info;</div>
<div class="line"><a name="l00194"></a><span class="lineno"> 194</span>  }</div>
<div class="line"><a name="l00195"></a><span class="lineno"> 195</span>  </div>
<div class="line"><a name="l00197"></a><span class="lineno"> 197</span>  <span class="keyword">template</span><<span class="keyword">typename</span> Rhs, <span class="keyword">typename</span> DestScalar, <span class="keywordtype">int</span> DestOptions, <span class="keyword">typename</span> DestIndex></div>
<div class="line"><a name="l00198"></a><span class="lineno"> 198</span>  <span class="keywordtype">void</span> _solve_sparse(<span class="keyword">const</span> Rhs& b, <a class="code" href="classEigen_1_1SparseMatrix.html">SparseMatrix<DestScalar,DestOptions,DestIndex></a> &dest)<span class="keyword"> const</span></div>
<div class="line"><a name="l00199"></a><span class="lineno"> 199</span> <span class="keyword"> </span>{</div>
<div class="line"><a name="l00200"></a><span class="lineno"> 200</span>  eigen_assert(rows()==b.rows());</div>
<div class="line"><a name="l00201"></a><span class="lineno"> 201</span>  </div>
<div class="line"><a name="l00202"></a><span class="lineno"> 202</span>  <span class="keywordtype">int</span> rhsCols = b.cols();</div>
<div class="line"><a name="l00203"></a><span class="lineno"> 203</span>  <span class="keywordtype">int</span> size = b.rows();</div>
<div class="line"><a name="l00204"></a><span class="lineno"> 204</span>  <a class="code" href="classEigen_1_1Matrix.html">Eigen::Matrix<DestScalar,Dynamic,1></a> tb(size);</div>
<div class="line"><a name="l00205"></a><span class="lineno"> 205</span>  <a class="code" href="classEigen_1_1Matrix.html">Eigen::Matrix<DestScalar,Dynamic,1></a> tx(size);</div>
<div class="line"><a name="l00206"></a><span class="lineno"> 206</span>  <span class="keywordflow">for</span>(<span class="keywordtype">int</span> k=0; k<rhsCols; ++k)</div>
<div class="line"><a name="l00207"></a><span class="lineno"> 207</span>  {</div>
<div class="line"><a name="l00208"></a><span class="lineno"> 208</span>  tb = b.col(k);</div>
<div class="line"><a name="l00209"></a><span class="lineno"> 209</span>  tx = derived().solve(tb);</div>
<div class="line"><a name="l00210"></a><span class="lineno"> 210</span>  dest.<a class="code" href="classEigen_1_1SparseMatrixBase.html#a58c77695de3b33405f01f2fdf3dc389d">col</a>(k) = tx.sparseView(0);</div>
<div class="line"><a name="l00211"></a><span class="lineno"> 211</span>  }</div>
<div class="line"><a name="l00212"></a><span class="lineno"> 212</span>  }</div>
<div class="line"><a name="l00213"></a><span class="lineno"> 213</span> </div>
<div class="line"><a name="l00214"></a><span class="lineno"> 214</span> <span class="keyword">protected</span>:</div>
<div class="line"><a name="l00215"></a><span class="lineno"> 215</span>  <span class="keywordtype">void</span> init()</div>
<div class="line"><a name="l00216"></a><span class="lineno"> 216</span>  {</div>
<div class="line"><a name="l00217"></a><span class="lineno"> 217</span>  m_isInitialized = <span class="keyword">false</span>;</div>
<div class="line"><a name="l00218"></a><span class="lineno"> 218</span>  m_analysisIsOk = <span class="keyword">false</span>;</div>
<div class="line"><a name="l00219"></a><span class="lineno"> 219</span>  m_factorizationIsOk = <span class="keyword">false</span>;</div>
<div class="line"><a name="l00220"></a><span class="lineno"> 220</span>  m_maxIterations = -1;</div>
<div class="line"><a name="l00221"></a><span class="lineno"> 221</span>  m_tolerance = NumTraits<Scalar>::epsilon();</div>
<div class="line"><a name="l00222"></a><span class="lineno"> 222</span>  }</div>
<div class="line"><a name="l00223"></a><span class="lineno"> 223</span>  <span class="keyword">const</span> MatrixType* mp_matrix;</div>
<div class="line"><a name="l00224"></a><span class="lineno"> 224</span>  Preconditioner m_preconditioner;</div>
<div class="line"><a name="l00225"></a><span class="lineno"> 225</span> </div>
<div class="line"><a name="l00226"></a><span class="lineno"> 226</span>  <span class="keywordtype">int</span> m_maxIterations;</div>
<div class="line"><a name="l00227"></a><span class="lineno"> 227</span>  RealScalar m_tolerance;</div>
<div class="line"><a name="l00228"></a><span class="lineno"> 228</span>  </div>
<div class="line"><a name="l00229"></a><span class="lineno"> 229</span>  <span class="keyword">mutable</span> RealScalar m_error;</div>
<div class="line"><a name="l00230"></a><span class="lineno"> 230</span>  <span class="keyword">mutable</span> <span class="keywordtype">int</span> m_iterations;</div>
<div class="line"><a name="l00231"></a><span class="lineno"> 231</span>  <span class="keyword">mutable</span> <a class="code" href="group__enums.html#ga51bc1ac16f26ebe51eae1abb77bd037b">ComputationInfo</a> m_info;</div>
<div class="line"><a name="l00232"></a><span class="lineno"> 232</span>  <span class="keyword">mutable</span> <span class="keywordtype">bool</span> m_isInitialized, m_analysisIsOk, m_factorizationIsOk;</div>
<div class="line"><a name="l00233"></a><span class="lineno"> 233</span> };</div>
<div class="line"><a name="l00234"></a><span class="lineno"> 234</span> </div>
<div class="line"><a name="l00235"></a><span class="lineno"> 235</span> <span class="keyword">namespace </span>internal {</div>
<div class="line"><a name="l00236"></a><span class="lineno"> 236</span>  </div>
<div class="line"><a name="l00237"></a><span class="lineno"> 237</span> <span class="keyword">template</span><<span class="keyword">typename</span> Derived, <span class="keyword">typename</span> Rhs></div>
<div class="line"><a name="l00238"></a><span class="lineno"> 238</span> <span class="keyword">struct </span>sparse_solve_retval<IterativeSolverBase<Derived>, Rhs></div>
<div class="line"><a name="l00239"></a><span class="lineno"> 239</span>  : sparse_solve_retval_base<IterativeSolverBase<Derived>, Rhs></div>
<div class="line"><a name="l00240"></a><span class="lineno"> 240</span> {</div>
<div class="line"><a name="l00241"></a><span class="lineno"> 241</span>  <span class="keyword">typedef</span> IterativeSolverBase<Derived> Dec;</div>
<div class="line"><a name="l00242"></a><span class="lineno"> 242</span>  EIGEN_MAKE_SPARSE_SOLVE_HELPERS(Dec,Rhs)</div>
<div class="line"><a name="l00243"></a><span class="lineno"> 243</span> </div>
<div class="line"><a name="l00244"></a><span class="lineno"> 244</span>  template<typename Dest> <span class="keywordtype">void</span> evalTo(Dest& dst)<span class="keyword"> const</span></div>
<div class="line"><a name="l00245"></a><span class="lineno"> 245</span> <span class="keyword"> </span>{</div>
<div class="line"><a name="l00246"></a><span class="lineno"> 246</span>  dec().derived()._solve_sparse(rhs(),dst);</div>
<div class="line"><a name="l00247"></a><span class="lineno"> 247</span>  }</div>
<div class="line"><a name="l00248"></a><span class="lineno"> 248</span> };</div>
<div class="line"><a name="l00249"></a><span class="lineno"> 249</span> </div>
<div class="line"><a name="l00250"></a><span class="lineno"> 250</span> } <span class="comment">// end namespace internal</span></div>
<div class="line"><a name="l00251"></a><span class="lineno"> 251</span> </div>
<div class="line"><a name="l00252"></a><span class="lineno"> 252</span> } <span class="comment">// end namespace Eigen</span></div>
<div class="line"><a name="l00253"></a><span class="lineno"> 253</span> </div>
<div class="line"><a name="l00254"></a><span class="lineno"> 254</span> <span class="preprocessor">#endif // EIGEN_ITERATIVE_SOLVER_BASE_H</span></div>
<div class="ttc" id="classEigen_1_1IterativeSolverBase_html_a0c06d5c2034ebb329c54235369643ad2"><div class="ttname"><a href="classEigen_1_1IterativeSolverBase.html#a0c06d5c2034ebb329c54235369643ad2">Eigen::IterativeSolverBase::info</a></div><div class="ttdeci">ComputationInfo info() const </div><div class="ttdef"><b>Definition:</b> IterativeSolverBase.h:190</div></div>
<div class="ttc" id="classEigen_1_1IterativeSolverBase_html_ae4bec7fa55f17f7bb64b6b2fc4039b58"><div class="ttname"><a href="classEigen_1_1IterativeSolverBase.html#ae4bec7fa55f17f7bb64b6b2fc4039b58">Eigen::IterativeSolverBase::preconditioner</a></div><div class="ttdeci">Preconditioner & preconditioner()</div><div class="ttdef"><b>Definition:</b> IterativeSolverBase.h:130</div></div>
<div class="ttc" id="classEigen_1_1SparseMatrix_html"><div class="ttname"><a href="classEigen_1_1SparseMatrix.html">Eigen::SparseMatrix</a></div><div class="ttdoc">A versatible sparse matrix representation. </div><div class="ttdef"><b>Definition:</b> SparseMatrix.h:85</div></div>
<div class="ttc" id="classEigen_1_1IterativeSolverBase_html_ab837a9d99eea1f79dd4721727ef98d37"><div class="ttname"><a href="classEigen_1_1IterativeSolverBase.html#ab837a9d99eea1f79dd4721727ef98d37">Eigen::IterativeSolverBase::factorize</a></div><div class="ttdeci">Derived & factorize(const MatrixType &A)</div><div class="ttdef"><b>Definition:</b> IterativeSolverBase.h:83</div></div>
<div class="ttc" id="classEigen_1_1IterativeSolverBase_html_a7892f6fbc52bfa658e1324a63d376d1c"><div class="ttname"><a href="classEigen_1_1IterativeSolverBase.html#a7892f6fbc52bfa658e1324a63d376d1c">Eigen::IterativeSolverBase::solve</a></div><div class="ttdeci">const internal::sparse_solve_retval< IterativeSolverBase, Rhs > solve(const SparseMatrixBase< Rhs > &b) const </div><div class="ttdef"><b>Definition:</b> IterativeSolverBase.h:181</div></div>
<div class="ttc" id="classEigen_1_1IterativeSolverBase_html_a5140d3e2be1561de7f003504ef1be45d"><div class="ttname"><a href="classEigen_1_1IterativeSolverBase.html#a5140d3e2be1561de7f003504ef1be45d">Eigen::IterativeSolverBase::IterativeSolverBase</a></div><div class="ttdeci">IterativeSolverBase()</div><div class="ttdef"><b>Definition:</b> IterativeSolverBase.h:36</div></div>
<div class="ttc" id="classEigen_1_1SparseMatrixBase_html"><div class="ttname"><a href="classEigen_1_1SparseMatrixBase.html">Eigen::SparseMatrixBase</a></div><div class="ttdoc">Base class of any sparse matrices or sparse expressions. </div><div class="ttdef"><b>Definition:</b> SparseMatrixBase.h:26</div></div>
<div class="ttc" id="structEigen_1_1EigenBase_html_aa84222add803ad7c9db07dd4dd91d5d9"><div class="ttname"><a href="structEigen_1_1EigenBase.html#aa84222add803ad7c9db07dd4dd91d5d9">Eigen::EigenBase::derived</a></div><div class="ttdeci">Derived & derived()</div><div class="ttdef"><b>Definition:</b> EigenBase.h:34</div></div>
<div class="ttc" id="classEigen_1_1IterativeSolverBase_html_a693a8142a905e7130bacd77586a6f6a0"><div class="ttname"><a href="classEigen_1_1IterativeSolverBase.html#a693a8142a905e7130bacd77586a6f6a0">Eigen::IterativeSolverBase::compute</a></div><div class="ttdeci">Derived & compute(const MatrixType &A)</div><div class="ttdef"><b>Definition:</b> IterativeSolverBase.h:103</div></div>
<div class="ttc" id="classEigen_1_1IterativeSolverBase_html_a39b43ecdc61211a15d1e986e28a03513"><div class="ttname"><a href="classEigen_1_1IterativeSolverBase.html#a39b43ecdc61211a15d1e986e28a03513">Eigen::IterativeSolverBase::setTolerance</a></div><div class="ttdeci">Derived & setTolerance(const RealScalar &tolerance)</div><div class="ttdef"><b>Definition:</b> IterativeSolverBase.h:123</div></div>
<div class="ttc" id="classEigen_1_1IterativeSolverBase_html_a736349b3462f6ebf37c34b450db2ed18"><div class="ttname"><a href="classEigen_1_1IterativeSolverBase.html#a736349b3462f6ebf37c34b450db2ed18">Eigen::IterativeSolverBase::error</a></div><div class="ttdeci">RealScalar error() const </div><div class="ttdef"><b>Definition:</b> IterativeSolverBase.h:156</div></div>
<div class="ttc" id="classEigen_1_1IterativeSolverBase_html_aab135f12fadf495a511f20c71557e1aa"><div class="ttname"><a href="classEigen_1_1IterativeSolverBase.html#aab135f12fadf495a511f20c71557e1aa">Eigen::IterativeSolverBase::tolerance</a></div><div class="ttdeci">RealScalar tolerance() const </div><div class="ttdef"><b>Definition:</b> IterativeSolverBase.h:120</div></div>
<div class="ttc" id="classEigen_1_1IterativeSolverBase_html_a11aed1f82ecbec6d7436915c6d804d7a"><div class="ttname"><a href="classEigen_1_1IterativeSolverBase.html#a11aed1f82ecbec6d7436915c6d804d7a">Eigen::IterativeSolverBase::preconditioner</a></div><div class="ttdeci">const Preconditioner & preconditioner() const </div><div class="ttdef"><b>Definition:</b> IterativeSolverBase.h:133</div></div>
<div class="ttc" id="group__enums_html_gga51bc1ac16f26ebe51eae1abb77bd037bafdfbdf3247bd36a1f17270d5cec74c9c"><div class="ttname"><a href="group__enums.html#gga51bc1ac16f26ebe51eae1abb77bd037bafdfbdf3247bd36a1f17270d5cec74c9c">Eigen::Success</a></div><div class="ttdef"><b>Definition:</b> Constants.h:376</div></div>
<div class="ttc" id="classEigen_1_1IterativeSolverBase_html_acae1088225b7c746b16848d02d5e1c2a"><div class="ttname"><a href="classEigen_1_1IterativeSolverBase.html#acae1088225b7c746b16848d02d5e1c2a">Eigen::IterativeSolverBase::solve</a></div><div class="ttdeci">const internal::solve_retval< Derived, Rhs > solve(const MatrixBase< Rhs > &b) const </div><div class="ttdef"><b>Definition:</b> IterativeSolverBase.h:167</div></div>
<div class="ttc" id="classEigen_1_1IterativeSolverBase_html_ae044142449c071af13afc4fbbe633682"><div class="ttname"><a href="classEigen_1_1IterativeSolverBase.html#ae044142449c071af13afc4fbbe633682">Eigen::IterativeSolverBase::analyzePattern</a></div><div class="ttdeci">Derived & analyzePattern(const MatrixType &A)</div><div class="ttdef"><b>Definition:</b> IterativeSolverBase.h:65</div></div>
<div class="ttc" id="classEigen_1_1IterativeSolverBase_html_a81b1c0c3c9d19709b15e03a47ea90ef0"><div class="ttname"><a href="classEigen_1_1IterativeSolverBase.html#a81b1c0c3c9d19709b15e03a47ea90ef0">Eigen::IterativeSolverBase::IterativeSolverBase</a></div><div class="ttdeci">IterativeSolverBase(const MatrixType &A)</div><div class="ttdef"><b>Definition:</b> IterativeSolverBase.h:52</div></div>
<div class="ttc" id="classEigen_1_1Matrix_html"><div class="ttname"><a href="classEigen_1_1Matrix.html">Eigen::Matrix</a></div><div class="ttdoc">The matrix class, also used for vectors and row-vectors. </div><div class="ttdef"><b>Definition:</b> Matrix.h:127</div></div>
<div class="ttc" id="classEigen_1_1SparseMatrixBase_html_a5552abd83dbd03c85cea6d61fd8875a5"><div class="ttname"><a href="classEigen_1_1SparseMatrixBase.html#a5552abd83dbd03c85cea6d61fd8875a5">Eigen::SparseMatrixBase::rows</a></div><div class="ttdeci">Index rows() const </div><div class="ttdef"><b>Definition:</b> SparseMatrixBase.h:150</div></div>
<div class="ttc" id="group__enums_html_ga51bc1ac16f26ebe51eae1abb77bd037b"><div class="ttname"><a href="group__enums.html#ga51bc1ac16f26ebe51eae1abb77bd037b">Eigen::ComputationInfo</a></div><div class="ttdeci">ComputationInfo</div><div class="ttdef"><b>Definition:</b> Constants.h:374</div></div>
<div class="ttc" id="classEigen_1_1IterativeSolverBase_html_ad9aa2f8ecfda11aba72cfd3c5eefae20"><div class="ttname"><a href="classEigen_1_1IterativeSolverBase.html#ad9aa2f8ecfda11aba72cfd3c5eefae20">Eigen::IterativeSolverBase::setMaxIterations</a></div><div class="ttdeci">Derived & setMaxIterations(int maxIters)</div><div class="ttdef"><b>Definition:</b> IterativeSolverBase.h:142</div></div>
<div class="ttc" id="classEigen_1_1IterativeSolverBase_html"><div class="ttname"><a href="classEigen_1_1IterativeSolverBase.html">Eigen::IterativeSolverBase</a></div><div class="ttdoc">Base class for linear iterative solvers. </div><div class="ttdef"><b>Definition:</b> IterativeSolverBase.h:21</div></div>
<div class="ttc" id="classEigen_1_1IterativeSolverBase_html_a07c5f1fe9fa1556edc79452b52839829"><div class="ttname"><a href="classEigen_1_1IterativeSolverBase.html#a07c5f1fe9fa1556edc79452b52839829">Eigen::IterativeSolverBase::iterations</a></div><div class="ttdeci">int iterations() const </div><div class="ttdef"><b>Definition:</b> IterativeSolverBase.h:149</div></div>
<div class="ttc" id="classEigen_1_1MatrixBase_html"><div class="ttname"><a href="classEigen_1_1MatrixBase.html">Eigen::MatrixBase</a></div><div class="ttdoc">Base class for all dense matrices, vectors, and expressions. </div><div class="ttdef"><b>Definition:</b> MatrixBase.h:48</div></div>
<div class="ttc" id="classEigen_1_1SparseMatrixBase_html_a58c77695de3b33405f01f2fdf3dc389d"><div class="ttname"><a href="classEigen_1_1SparseMatrixBase.html#a58c77695de3b33405f01f2fdf3dc389d">Eigen::SparseMatrixBase< SparseMatrix< _Scalar, _Options, _Index > >::col</a></div><div class="ttdeci">ColXpr col(Index i)</div><div class="ttdef"><b>Definition:</b> SparseMatrixBase.h:709</div></div>
<div class="ttc" id="classEigen_1_1IterativeSolverBase_html_a9c020a2e26d3081eeff611b802962530"><div class="ttname"><a href="classEigen_1_1IterativeSolverBase.html#a9c020a2e26d3081eeff611b802962530">Eigen::IterativeSolverBase::maxIterations</a></div><div class="ttdeci">int maxIterations() const </div><div class="ttdef"><b>Definition:</b> IterativeSolverBase.h:136</div></div>
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