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<div class="title">MarketIO.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">// Copyright (C) 2012 Desire NUENTSA WAKAM <desire.nuentsa_wakam@inria.fr></span></div>
<div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment">//</span></div>
<div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment">// This Source Code Form is subject to the terms of the Mozilla</span></div>
<div class="line"><a name="l00008"></a><span class="lineno"> 8</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="l00009"></a><span class="lineno"> 9</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="l00010"></a><span class="lineno"> 10</span> </div>
<div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="preprocessor">#ifndef EIGEN_SPARSE_MARKET_IO_H</span></div>
<div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="preprocessor"></span><span class="preprocessor">#define EIGEN_SPARSE_MARKET_IO_H</span></div>
<div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="preprocessor">#include <iostream></span></div>
<div class="line"><a name="l00015"></a><span class="lineno"> 15</span> </div>
<div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="keyword">namespace </span>Eigen { </div>
<div class="line"><a name="l00017"></a><span class="lineno"> 17</span> </div>
<div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="keyword">namespace </span>internal </div>
<div class="line"><a name="l00019"></a><span class="lineno"> 19</span> {</div>
<div class="line"><a name="l00020"></a><span class="lineno"> 20</span>  <span class="keyword">template</span> <<span class="keyword">typename</span> Scalar></div>
<div class="line"><a name="l00021"></a><span class="lineno"> 21</span>  <span class="keyword">inline</span> <span class="keywordtype">bool</span> GetMarketLine (std::stringstream& line, <span class="keywordtype">int</span>& M, <span class="keywordtype">int</span>& N, <span class="keywordtype">int</span>& i, <span class="keywordtype">int</span>& j, Scalar& value)</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>  line >> i >> j >> value;</div>
<div class="line"><a name="l00024"></a><span class="lineno"> 24</span>  i--;</div>
<div class="line"><a name="l00025"></a><span class="lineno"> 25</span>  j--;</div>
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span>  <span class="keywordflow">if</span>(i>=0 && j>=0 && i<M && j<N)</div>
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span>  {</div>
<div class="line"><a name="l00028"></a><span class="lineno"> 28</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>; </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="keywordflow">else</span></div>
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span>  }</div>
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span>  <span class="keyword">template</span> <<span class="keyword">typename</span> Scalar></div>
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span>  <span class="keyword">inline</span> <span class="keywordtype">bool</span> GetMarketLine (std::stringstream& line, <span class="keywordtype">int</span>& M, <span class="keywordtype">int</span>& N, <span class="keywordtype">int</span>& i, <span class="keywordtype">int</span>& j, std::complex<Scalar>& value)</div>
<div class="line"><a name="l00035"></a><span class="lineno"> 35</span>  {</div>
<div class="line"><a name="l00036"></a><span class="lineno"> 36</span>  Scalar valR, valI;</div>
<div class="line"><a name="l00037"></a><span class="lineno"> 37</span>  line >> i >> j >> valR >> valI;</div>
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span>  i--;</div>
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span>  j--;</div>
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span>  <span class="keywordflow">if</span>(i>=0 && j>=0 && i<M && j<N)</div>
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span>  {</div>
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span>  value = std::complex<Scalar>(valR, valI);</div>
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>; </div>
<div class="line"><a name="l00044"></a><span class="lineno"> 44</span>  }</div>
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span>  <span class="keywordflow">else</span></div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  }</div>
<div class="line"><a name="l00048"></a><span class="lineno"> 48</span> </div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  <span class="keyword">template</span> <<span class="keyword">typename</span> RealScalar></div>
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  <span class="keyword">inline</span> <span class="keywordtype">void</span> GetVectorElt (<span class="keyword">const</span> std::string& line, RealScalar& val)</div>
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  {</div>
<div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  std::istringstream newline(line);</div>
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  newline >> val; </div>
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  }</div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span> </div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  <span class="keyword">template</span> <<span class="keyword">typename</span> RealScalar></div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  <span class="keyword">inline</span> <span class="keywordtype">void</span> GetVectorElt (<span class="keyword">const</span> std::string& line, std::complex<RealScalar>& val)</div>
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  {</div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  RealScalar valR, valI; </div>
<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  std::istringstream newline(line);</div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  newline >> valR >> valI; </div>
<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  val = std::complex<RealScalar>(valR, valI);</div>
<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  }</div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  </div>
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  <span class="keyword">template</span><<span class="keyword">typename</span> Scalar></div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  <span class="keyword">inline</span> <span class="keywordtype">void</span> putMarketHeader(std::string& header,<span class="keywordtype">int</span> sym)</div>
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  {</div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  header= <span class="stringliteral">"%%MatrixMarket matrix coordinate "</span>;</div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  <span class="keywordflow">if</span>(internal::is_same<Scalar, std::complex<float> >::value || internal::is_same<Scalar, std::complex<double> >::value)</div>
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  {</div>
<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  header += <span class="stringliteral">" complex"</span>; </div>
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  <span class="keywordflow">if</span>(sym == Symmetric) header += <span class="stringliteral">" symmetric"</span>;</div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  <span class="keywordflow">else</span> <span class="keywordflow">if</span> (sym == SelfAdjoint) header += <span class="stringliteral">" Hermitian"</span>;</div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  <span class="keywordflow">else</span> header += <span class="stringliteral">" general"</span>;</div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  }</div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  <span class="keywordflow">else</span></div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  {</div>
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  header += <span class="stringliteral">" real"</span>; </div>
<div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  <span class="keywordflow">if</span>(sym == Symmetric) header += <span class="stringliteral">" symmetric"</span>;</div>
<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  <span class="keywordflow">else</span> header += <span class="stringliteral">" general"</span>;</div>
<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  }</div>
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  }</div>
<div class="line"><a name="l00083"></a><span class="lineno"> 83</span> </div>
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  <span class="keyword">template</span><<span class="keyword">typename</span> Scalar></div>
<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  <span class="keyword">inline</span> <span class="keywordtype">void</span> PutMatrixElt(Scalar value, <span class="keywordtype">int</span> row, <span class="keywordtype">int</span> col, std::ofstream& out)</div>
<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  {</div>
<div class="line"><a name="l00087"></a><span class="lineno"> 87</span>  out << row << <span class="stringliteral">" "</span><< col << <span class="stringliteral">" "</span> << value << <span class="stringliteral">"\n"</span>;</div>
<div class="line"><a name="l00088"></a><span class="lineno"> 88</span>  }</div>
<div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  <span class="keyword">template</span><<span class="keyword">typename</span> Scalar></div>
<div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  <span class="keyword">inline</span> <span class="keywordtype">void</span> PutMatrixElt(std::complex<Scalar> value, <span class="keywordtype">int</span> row, <span class="keywordtype">int</span> col, std::ofstream& out)</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>  out << row << <span class="stringliteral">" "</span> << col << <span class="stringliteral">" "</span> << value.real() << <span class="stringliteral">" "</span> << value.imag() << <span class="stringliteral">"\n"</span>;</div>
<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  }</div>
<div class="line"><a name="l00094"></a><span class="lineno"> 94</span> </div>
<div class="line"><a name="l00095"></a><span class="lineno"> 95</span> </div>
<div class="line"><a name="l00096"></a><span class="lineno"> 96</span>  <span class="keyword">template</span><<span class="keyword">typename</span> Scalar></div>
<div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  <span class="keyword">inline</span> <span class="keywordtype">void</span> putVectorElt(Scalar value, std::ofstream& out)</div>
<div class="line"><a name="l00098"></a><span class="lineno"> 98</span>  {</div>
<div class="line"><a name="l00099"></a><span class="lineno"> 99</span>  out << value << <span class="stringliteral">"\n"</span>; </div>
<div class="line"><a name="l00100"></a><span class="lineno"> 100</span>  }</div>
<div class="line"><a name="l00101"></a><span class="lineno"> 101</span>  <span class="keyword">template</span><<span class="keyword">typename</span> Scalar></div>
<div class="line"><a name="l00102"></a><span class="lineno"> 102</span>  <span class="keyword">inline</span> <span class="keywordtype">void</span> putVectorElt(std::complex<Scalar> value, std::ofstream& out)</div>
<div class="line"><a name="l00103"></a><span class="lineno"> 103</span>  {</div>
<div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  out << value.real << <span class="stringliteral">" "</span> << value.imag()<< <span class="stringliteral">"\n"</span>; </div>
<div class="line"><a name="l00105"></a><span class="lineno"> 105</span>  }</div>
<div class="line"><a name="l00106"></a><span class="lineno"> 106</span> </div>
<div class="line"><a name="l00107"></a><span class="lineno"> 107</span> } <span class="comment">// end namepsace internal</span></div>
<div class="line"><a name="l00108"></a><span class="lineno"> 108</span> </div>
<div class="line"><a name="l00109"></a><span class="lineno"> 109</span> <span class="keyword">inline</span> <span class="keywordtype">bool</span> getMarketHeader(<span class="keyword">const</span> std::string& filename, <span class="keywordtype">int</span>& sym, <span class="keywordtype">bool</span>& iscomplex, <span class="keywordtype">bool</span>& isvector)</div>
<div class="line"><a name="l00110"></a><span class="lineno"> 110</span> {</div>
<div class="line"><a name="l00111"></a><span class="lineno"> 111</span>  sym = 0; </div>
<div class="line"><a name="l00112"></a><span class="lineno"> 112</span>  isvector = <span class="keyword">false</span>;</div>
<div class="line"><a name="l00113"></a><span class="lineno"> 113</span>  std::ifstream in(filename.c_str(),std::ios::in);</div>
<div class="line"><a name="l00114"></a><span class="lineno"> 114</span>  <span class="keywordflow">if</span>(!in)</div>
<div class="line"><a name="l00115"></a><span class="lineno"> 115</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><a name="l00116"></a><span class="lineno"> 116</span>  </div>
<div class="line"><a name="l00117"></a><span class="lineno"> 117</span>  std::string line; </div>
<div class="line"><a name="l00118"></a><span class="lineno"> 118</span>  <span class="comment">// The matrix header is always the first line in the file </span></div>
<div class="line"><a name="l00119"></a><span class="lineno"> 119</span>  std::getline(in, line); eigen_assert(in.good());</div>
<div class="line"><a name="l00120"></a><span class="lineno"> 120</span>  </div>
<div class="line"><a name="l00121"></a><span class="lineno"> 121</span>  std::stringstream fmtline(line); </div>
<div class="line"><a name="l00122"></a><span class="lineno"> 122</span>  std::string substr[5];</div>
<div class="line"><a name="l00123"></a><span class="lineno"> 123</span>  fmtline>> substr[0] >> substr[1] >> substr[2] >> substr[3] >> substr[4];</div>
<div class="line"><a name="l00124"></a><span class="lineno"> 124</span>  <span class="keywordflow">if</span>(substr[2].compare(<span class="stringliteral">"array"</span>) == 0) isvector = <span class="keyword">true</span>;</div>
<div class="line"><a name="l00125"></a><span class="lineno"> 125</span>  <span class="keywordflow">if</span>(substr[3].compare(<span class="stringliteral">"complex"</span>) == 0) iscomplex = <span class="keyword">true</span>;</div>
<div class="line"><a name="l00126"></a><span class="lineno"> 126</span>  <span class="keywordflow">if</span>(substr[4].compare(<span class="stringliteral">"symmetric"</span>) == 0) sym = Symmetric;</div>
<div class="line"><a name="l00127"></a><span class="lineno"> 127</span>  <span class="keywordflow">else</span> <span class="keywordflow">if</span> (substr[4].compare(<span class="stringliteral">"Hermitian"</span>) == 0) sym = SelfAdjoint;</div>
<div class="line"><a name="l00128"></a><span class="lineno"> 128</span>  </div>
<div class="line"><a name="l00129"></a><span class="lineno"> 129</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
<div class="line"><a name="l00130"></a><span class="lineno"> 130</span> }</div>
<div class="line"><a name="l00131"></a><span class="lineno"> 131</span>  </div>
<div class="line"><a name="l00132"></a><span class="lineno"> 132</span> <span class="keyword">template</span><<span class="keyword">typename</span> SparseMatrixType></div>
<div class="line"><a name="l00133"></a><span class="lineno"> 133</span> <span class="keywordtype">bool</span> loadMarket(SparseMatrixType& mat, <span class="keyword">const</span> std::string& filename)</div>
<div class="line"><a name="l00134"></a><span class="lineno"> 134</span> {</div>
<div class="line"><a name="l00135"></a><span class="lineno"> 135</span>  <span class="keyword">typedef</span> <span class="keyword">typename</span> SparseMatrixType::Scalar Scalar;</div>
<div class="line"><a name="l00136"></a><span class="lineno"> 136</span>  std::ifstream input(filename.c_str(),std::ios::in);</div>
<div class="line"><a name="l00137"></a><span class="lineno"> 137</span>  <span class="keywordflow">if</span>(!input)</div>
<div class="line"><a name="l00138"></a><span class="lineno"> 138</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</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>  <span class="keyword">const</span> <span class="keywordtype">int</span> maxBuffersize = 2048;</div>
<div class="line"><a name="l00141"></a><span class="lineno"> 141</span>  <span class="keywordtype">char</span> buffer[maxBuffersize];</div>
<div class="line"><a name="l00142"></a><span class="lineno"> 142</span>  </div>
<div class="line"><a name="l00143"></a><span class="lineno"> 143</span>  <span class="keywordtype">bool</span> readsizes = <span class="keyword">false</span>;</div>
<div class="line"><a name="l00144"></a><span class="lineno"> 144</span> </div>
<div class="line"><a name="l00145"></a><span class="lineno"> 145</span>  <span class="keyword">typedef</span> Triplet<Scalar,int> T;</div>
<div class="line"><a name="l00146"></a><span class="lineno"> 146</span>  std::vector<T> elements;</div>
<div class="line"><a name="l00147"></a><span class="lineno"> 147</span>  </div>
<div class="line"><a name="l00148"></a><span class="lineno"> 148</span>  <span class="keywordtype">int</span> M(-1), N(-1), NNZ(-1);</div>
<div class="line"><a name="l00149"></a><span class="lineno"> 149</span>  <span class="keywordtype">int</span> count = 0;</div>
<div class="line"><a name="l00150"></a><span class="lineno"> 150</span>  <span class="keywordflow">while</span>(input.getline(buffer, maxBuffersize))</div>
<div class="line"><a name="l00151"></a><span class="lineno"> 151</span>  {</div>
<div class="line"><a name="l00152"></a><span class="lineno"> 152</span>  <span class="comment">// skip comments </span></div>
<div class="line"><a name="l00153"></a><span class="lineno"> 153</span>  <span class="comment">//NOTE An appropriate test should be done on the header to get the symmetry</span></div>
<div class="line"><a name="l00154"></a><span class="lineno"> 154</span>  <span class="keywordflow">if</span>(buffer[0]==<span class="charliteral">'%'</span>)</div>
<div class="line"><a name="l00155"></a><span class="lineno"> 155</span>  <span class="keywordflow">continue</span>;</div>
<div class="line"><a name="l00156"></a><span class="lineno"> 156</span>  </div>
<div class="line"><a name="l00157"></a><span class="lineno"> 157</span>  std::stringstream line(buffer);</div>
<div class="line"><a name="l00158"></a><span class="lineno"> 158</span>  </div>
<div class="line"><a name="l00159"></a><span class="lineno"> 159</span>  <span class="keywordflow">if</span>(!readsizes)</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>  line >> M >> N >> NNZ;</div>
<div class="line"><a name="l00162"></a><span class="lineno"> 162</span>  <span class="keywordflow">if</span>(M > 0 && N > 0 && NNZ > 0) </div>
<div class="line"><a name="l00163"></a><span class="lineno"> 163</span>  {</div>
<div class="line"><a name="l00164"></a><span class="lineno"> 164</span>  readsizes = <span class="keyword">true</span>;</div>
<div class="line"><a name="l00165"></a><span class="lineno"> 165</span>  std::cout << <span class="stringliteral">"sizes: "</span> << M << <span class="stringliteral">","</span> << N << <span class="stringliteral">","</span> << NNZ << <span class="stringliteral">"\n"</span>;</div>
<div class="line"><a name="l00166"></a><span class="lineno"> 166</span>  mat.resize(M,N);</div>
<div class="line"><a name="l00167"></a><span class="lineno"> 167</span>  mat.reserve(NNZ);</div>
<div class="line"><a name="l00168"></a><span class="lineno"> 168</span>  }</div>
<div class="line"><a name="l00169"></a><span class="lineno"> 169</span>  }</div>
<div class="line"><a name="l00170"></a><span class="lineno"> 170</span>  <span class="keywordflow">else</span></div>
<div class="line"><a name="l00171"></a><span class="lineno"> 171</span>  { </div>
<div class="line"><a name="l00172"></a><span class="lineno"> 172</span>  <span class="keywordtype">int</span> i(-1), j(-1);</div>
<div class="line"><a name="l00173"></a><span class="lineno"> 173</span>  Scalar value; </div>
<div class="line"><a name="l00174"></a><span class="lineno"> 174</span>  <span class="keywordflow">if</span>( internal::GetMarketLine(line, M, N, i, j, value) ) </div>
<div class="line"><a name="l00175"></a><span class="lineno"> 175</span>  {</div>
<div class="line"><a name="l00176"></a><span class="lineno"> 176</span>  ++ count;</div>
<div class="line"><a name="l00177"></a><span class="lineno"> 177</span>  elements.push_back(T(i,j,value));</div>
<div class="line"><a name="l00178"></a><span class="lineno"> 178</span>  }</div>
<div class="line"><a name="l00179"></a><span class="lineno"> 179</span>  <span class="keywordflow">else</span> </div>
<div class="line"><a name="l00180"></a><span class="lineno"> 180</span>  std::cerr << <span class="stringliteral">"Invalid read: "</span> << i << <span class="stringliteral">","</span> << j << <span class="stringliteral">"\n"</span>; </div>
<div class="line"><a name="l00181"></a><span class="lineno"> 181</span>  }</div>
<div class="line"><a name="l00182"></a><span class="lineno"> 182</span>  }</div>
<div class="line"><a name="l00183"></a><span class="lineno"> 183</span>  mat.setFromTriplets(elements.begin(), elements.end());</div>
<div class="line"><a name="l00184"></a><span class="lineno"> 184</span>  <span class="keywordflow">if</span>(count!=NNZ)</div>
<div class="line"><a name="l00185"></a><span class="lineno"> 185</span>  std::cerr << count << <span class="stringliteral">"!="</span> << NNZ << <span class="stringliteral">"\n"</span>;</div>
<div class="line"><a name="l00186"></a><span class="lineno"> 186</span>  </div>
<div class="line"><a name="l00187"></a><span class="lineno"> 187</span>  input.close();</div>
<div class="line"><a name="l00188"></a><span class="lineno"> 188</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
<div class="line"><a name="l00189"></a><span class="lineno"> 189</span> }</div>
<div class="line"><a name="l00190"></a><span class="lineno"> 190</span> </div>
<div class="line"><a name="l00191"></a><span class="lineno"> 191</span> <span class="keyword">template</span><<span class="keyword">typename</span> VectorType></div>
<div class="line"><a name="l00192"></a><span class="lineno"> 192</span> <span class="keywordtype">bool</span> loadMarketVector(VectorType& vec, <span class="keyword">const</span> std::string& filename)</div>
<div class="line"><a name="l00193"></a><span class="lineno"> 193</span> {</div>
<div class="line"><a name="l00194"></a><span class="lineno"> 194</span>  <span class="keyword">typedef</span> <span class="keyword">typename</span> VectorType::Scalar Scalar;</div>
<div class="line"><a name="l00195"></a><span class="lineno"> 195</span>  std::ifstream in(filename.c_str(), std::ios::in);</div>
<div class="line"><a name="l00196"></a><span class="lineno"> 196</span>  <span class="keywordflow">if</span>(!in)</div>
<div class="line"><a name="l00197"></a><span class="lineno"> 197</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><a name="l00198"></a><span class="lineno"> 198</span>  </div>
<div class="line"><a name="l00199"></a><span class="lineno"> 199</span>  std::string line; </div>
<div class="line"><a name="l00200"></a><span class="lineno"> 200</span>  <span class="keywordtype">int</span> n(0), col(0); </div>
<div class="line"><a name="l00201"></a><span class="lineno"> 201</span>  <span class="keywordflow">do</span> </div>
<div class="line"><a name="l00202"></a><span class="lineno"> 202</span>  { <span class="comment">// Skip comments</span></div>
<div class="line"><a name="l00203"></a><span class="lineno"> 203</span>  std::getline(in, line); eigen_assert(in.good());</div>
<div class="line"><a name="l00204"></a><span class="lineno"> 204</span>  } <span class="keywordflow">while</span> (line[0] == <span class="charliteral">'%'</span>);</div>
<div class="line"><a name="l00205"></a><span class="lineno"> 205</span>  std::istringstream newline(line);</div>
<div class="line"><a name="l00206"></a><span class="lineno"> 206</span>  newline >> n >> col; </div>
<div class="line"><a name="l00207"></a><span class="lineno"> 207</span>  eigen_assert(n>0 && col>0);</div>
<div class="line"><a name="l00208"></a><span class="lineno"> 208</span>  vec.resize(n);</div>
<div class="line"><a name="l00209"></a><span class="lineno"> 209</span>  <span class="keywordtype">int</span> i = 0; </div>
<div class="line"><a name="l00210"></a><span class="lineno"> 210</span>  Scalar value; </div>
<div class="line"><a name="l00211"></a><span class="lineno"> 211</span>  <span class="keywordflow">while</span> ( std::getline(in, line) && (i < n) ){</div>
<div class="line"><a name="l00212"></a><span class="lineno"> 212</span>  internal::GetVectorElt(line, value); </div>
<div class="line"><a name="l00213"></a><span class="lineno"> 213</span>  vec(i++) = value; </div>
<div class="line"><a name="l00214"></a><span class="lineno"> 214</span>  }</div>
<div class="line"><a name="l00215"></a><span class="lineno"> 215</span>  in.close();</div>
<div class="line"><a name="l00216"></a><span class="lineno"> 216</span>  <span class="keywordflow">if</span> (i!=n){</div>
<div class="line"><a name="l00217"></a><span class="lineno"> 217</span>  std::cerr<< <span class="stringliteral">"Unable to read all elements from file "</span> << filename << <span class="stringliteral">"\n"</span>;</div>
<div class="line"><a name="l00218"></a><span class="lineno"> 218</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><a name="l00219"></a><span class="lineno"> 219</span>  }</div>
<div class="line"><a name="l00220"></a><span class="lineno"> 220</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
<div class="line"><a name="l00221"></a><span class="lineno"> 221</span> }</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">template</span><<span class="keyword">typename</span> SparseMatrixType></div>
<div class="line"><a name="l00224"></a><span class="lineno"> 224</span> <span class="keywordtype">bool</span> saveMarket(<span class="keyword">const</span> SparseMatrixType& mat, <span class="keyword">const</span> std::string& filename, <span class="keywordtype">int</span> sym = 0)</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="keyword">typedef</span> <span class="keyword">typename</span> SparseMatrixType::Scalar Scalar;</div>
<div class="line"><a name="l00227"></a><span class="lineno"> 227</span>  std::ofstream out(filename.c_str(),std::ios::out);</div>
<div class="line"><a name="l00228"></a><span class="lineno"> 228</span>  <span class="keywordflow">if</span>(!out)</div>
<div class="line"><a name="l00229"></a><span class="lineno"> 229</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><a name="l00230"></a><span class="lineno"> 230</span>  </div>
<div class="line"><a name="l00231"></a><span class="lineno"> 231</span>  out.flags(std::ios_base::scientific);</div>
<div class="line"><a name="l00232"></a><span class="lineno"> 232</span>  out.precision(64);</div>
<div class="line"><a name="l00233"></a><span class="lineno"> 233</span>  std::string header; </div>
<div class="line"><a name="l00234"></a><span class="lineno"> 234</span>  internal::putMarketHeader<Scalar>(header, sym); </div>
<div class="line"><a name="l00235"></a><span class="lineno"> 235</span>  out << header << std::endl; </div>
<div class="line"><a name="l00236"></a><span class="lineno"> 236</span>  out << mat.rows() << <span class="stringliteral">" "</span> << mat.cols() << <span class="stringliteral">" "</span> << mat.nonZeros() << <span class="stringliteral">"\n"</span>;</div>
<div class="line"><a name="l00237"></a><span class="lineno"> 237</span>  <span class="keywordtype">int</span> count = 0;</div>
<div class="line"><a name="l00238"></a><span class="lineno"> 238</span>  <span class="keywordflow">for</span>(<span class="keywordtype">int</span> j=0; j<mat.outerSize(); ++j)</div>
<div class="line"><a name="l00239"></a><span class="lineno"> 239</span>  <span class="keywordflow">for</span>(<span class="keyword">typename</span> SparseMatrixType::InnerIterator it(mat,j); it; ++it)</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>  ++ count;</div>
<div class="line"><a name="l00242"></a><span class="lineno"> 242</span>  internal::PutMatrixElt(it.value(), it.row()+1, it.col()+1, out);</div>
<div class="line"><a name="l00243"></a><span class="lineno"> 243</span>  <span class="comment">// out << it.row()+1 << " " << it.col()+1 << " " << it.value() << "\n";</span></div>
<div class="line"><a name="l00244"></a><span class="lineno"> 244</span>  }</div>
<div class="line"><a name="l00245"></a><span class="lineno"> 245</span>  out.close();</div>
<div class="line"><a name="l00246"></a><span class="lineno"> 246</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</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> <span class="keyword">template</span><<span class="keyword">typename</span> VectorType></div>
<div class="line"><a name="l00250"></a><span class="lineno"> 250</span> <span class="keywordtype">bool</span> saveMarketVector (<span class="keyword">const</span> VectorType& vec, <span class="keyword">const</span> std::string& filename)</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="keyword">typedef</span> <span class="keyword">typename</span> VectorType::Scalar Scalar; </div>
<div class="line"><a name="l00253"></a><span class="lineno"> 253</span>  std::ofstream out(filename.c_str(),std::ios::out);</div>
<div class="line"><a name="l00254"></a><span class="lineno"> 254</span>  <span class="keywordflow">if</span>(!out)</div>
<div class="line"><a name="l00255"></a><span class="lineno"> 255</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><a name="l00256"></a><span class="lineno"> 256</span>  </div>
<div class="line"><a name="l00257"></a><span class="lineno"> 257</span>  out.flags(std::ios_base::scientific);</div>
<div class="line"><a name="l00258"></a><span class="lineno"> 258</span>  out.precision(64);</div>
<div class="line"><a name="l00259"></a><span class="lineno"> 259</span>  <span class="keywordflow">if</span>(internal::is_same<Scalar, std::complex<float> >::value || internal::is_same<Scalar, std::complex<double> >::value)</div>
<div class="line"><a name="l00260"></a><span class="lineno"> 260</span>  out << <span class="stringliteral">"%%MatrixMarket matrix array complex general\n"</span>; </div>
<div class="line"><a name="l00261"></a><span class="lineno"> 261</span>  <span class="keywordflow">else</span></div>
<div class="line"><a name="l00262"></a><span class="lineno"> 262</span>  out << <span class="stringliteral">"%%MatrixMarket matrix array real general\n"</span>; </div>
<div class="line"><a name="l00263"></a><span class="lineno"> 263</span>  out << vec.size() << <span class="stringliteral">" "</span><< 1 << <span class="stringliteral">"\n"</span>;</div>
<div class="line"><a name="l00264"></a><span class="lineno"> 264</span>  <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i=0; i < vec.size(); i++){</div>
<div class="line"><a name="l00265"></a><span class="lineno"> 265</span>  internal::putVectorElt(vec(i), out); </div>
<div class="line"><a name="l00266"></a><span class="lineno"> 266</span>  }</div>
<div class="line"><a name="l00267"></a><span class="lineno"> 267</span>  out.close();</div>
<div class="line"><a name="l00268"></a><span class="lineno"> 268</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>; </div>
<div class="line"><a name="l00269"></a><span class="lineno"> 269</span> }</div>
<div class="line"><a name="l00270"></a><span class="lineno"> 270</span> </div>
<div class="line"><a name="l00271"></a><span class="lineno"> 271</span> } <span class="comment">// end namespace Eigen</span></div>
<div class="line"><a name="l00272"></a><span class="lineno"> 272</span> </div>
<div class="line"><a name="l00273"></a><span class="lineno"> 273</span> <span class="preprocessor">#endif // EIGEN_SPARSE_MARKET_IO_H</span></div>
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