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<div class="title">BlockTranspose.h</div> </div>
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<a href="BlockTranspose_8h.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> </div>
<div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="keyword">namespace </span>Eigen { </div>
<div class="line"><a name="l00016"></a><span class="lineno"> 16</span> </div>
<div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="keyword">namespace </span>internal {</div>
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="keyword">template</span><<span class="keyword">typename</span> MatrixType,<span class="keywordtype">int</span> NumBlocks></div>
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="keyword">struct </span>traits<BlockTranspose<MatrixType,NumBlocks> ></div>
<div class="line"><a name="l00028"></a><span class="lineno"> 28</span>  : traits<MatrixType></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">typedef</span> <span class="keyword">typename</span> MatrixType::Scalar Scalar;</div>
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span>  <span class="keyword">typedef</span> <span class="keyword">typename</span> traits<MatrixType>::StorageKind StorageKind;</div>
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span>  <span class="keyword">typedef</span> <span class="keyword">typename</span> traits<MatrixType>::XprKind XprKind;</div>
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span>  <span class="keyword">typedef</span> <span class="keyword">typename</span> ref_selector<MatrixType>::type MatrixTypeNested;</div>
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span>  <span class="keyword">typedef</span> <span class="keyword">typename</span> remove_reference<MatrixTypeNested>::type _MatrixTypeNested;</div>
<div class="line"><a name="l00035"></a><span class="lineno"> 35</span>  <span class="keyword">enum</span> {</div>
<div class="line"><a name="l00036"></a><span class="lineno"> 36</span>  RowsAtCompileTime = NumBlocks==Dynamic || int(MatrixType::RowsAtCompileTime)==Dynamic</div>
<div class="line"><a name="l00037"></a><span class="lineno"> 37</span>  ? Dynamic</div>
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span>  : MatrixType::ColsAtCompileTime / NumBlocks,</div>
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span>  ColsAtCompileTime = NumBlocks==Dynamic || int(MatrixType::ColsAtCompileTime)==Dynamic</div>
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span>  ? Dynamic</div>
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span>  : NumBlocks * MatrixType::RowsAtCompileTime,</div>
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span>  <span class="comment">//FIXME we don't propagate the max sizes !!!</span></div>
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span>  MaxRowsAtCompileTime = RowsAtCompileTime,</div>
<div class="line"><a name="l00044"></a><span class="lineno"> 44</span>  MaxColsAtCompileTime = ColsAtCompileTime,</div>
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span>  IsRowMajor = MaxRowsAtCompileTime==1 && MaxColsAtCompileTime!=1 ? 1</div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  : MaxColsAtCompileTime==1 && MaxRowsAtCompileTime!=1 ? 0</div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  : (MatrixType::Flags & RowMajorBit) ? 1 : 0,</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="comment">// FIXME enable DirectAccess with negative strides?</span></div>
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  Flags = IsRowMajor ? RowMajorBit : 0</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> };</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> </div>
<div class="line"><a name="l00055"></a><span class="lineno"><a class="line" href="classEigen_1_1BlockTranspose.html"> 55</a></span> <span class="keyword">template</span><<span class="keyword">typename</span> MatrixType,<span class="keywordtype">int</span> NumBlocks> <span class="keyword">class </span><a class="code" href="classEigen_1_1BlockTranspose.html">BlockTranspose</a></div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  : <span class="keyword">public</span> internal::dense_xpr_base< BlockTranspose<MatrixType,NumBlocks> >::type</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>  <span class="keyword">typedef</span> <span class="keyword">typename</span> internal::traits<BlockTranspose>::MatrixTypeNested MatrixTypeNested;</div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  <span class="keyword">typedef</span> <span class="keyword">typename</span> internal::traits<BlockTranspose>::_MatrixTypeNested _MatrixTypeNested;</div>
<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  <span class="keyword">public</span>:</div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span> </div>
<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  <span class="keyword">typedef</span> <span class="keyword">typename</span> internal::dense_xpr_base<BlockTranspose>::type Base;</div>
<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  EIGEN_DENSE_PUBLIC_INTERFACE(<a class="code" href="classEigen_1_1BlockTranspose.html">BlockTranspose</a>)</div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  <span class="keyword">typedef</span> <span class="keyword">typename</span> internal::remove_all<MatrixType>::type NestedExpression;</div>
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  </div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  <span class="keyword">template</span><<span class="keyword">typename</span> OriginalMatrixType></div>
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  EIGEN_DEVICE_FUNC</div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  <span class="keyword">inline</span> <span class="keyword">explicit</span> <a class="code" href="classEigen_1_1BlockTranspose.html">BlockTranspose</a>(<span class="keyword">const</span> OriginalMatrixType& a_matrix)</div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  : m_matrix(a_matrix), m_numBlocks(NumBlocks)</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>  EIGEN_STATIC_ASSERT((internal::is_same<<span class="keyword">typename</span> internal::remove_const<MatrixType>::type,OriginalMatrixType>::value),</div>
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  THE_MATRIX_OR_EXPRESSION_THAT_YOU_PASSED_DOES_NOT_HAVE_THE_EXPECTED_TYPE)</div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  eigen_assert(NumBlocks!=Dynamic);</div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</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="keyword">template</span><<span class="keyword">typename</span> OriginalMatrixType></div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  EIGEN_DEVICE_FUNC</div>
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  <span class="keyword">inline</span> BlockTranspose(<span class="keyword">const</span> OriginalMatrixType& a_matrix, Index numBlocks)</div>
<div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  : m_matrix(a_matrix), m_numBlocks(numBlocks)</div>
<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  {</div>
<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  EIGEN_STATIC_ASSERT((internal::is_same<<span class="keyword">typename</span> internal::remove_const<MatrixType>::type,OriginalMatrixType>::value),</div>
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  THE_MATRIX_OR_EXPRESSION_THAT_YOU_PASSED_DOES_NOT_HAVE_THE_EXPECTED_TYPE)</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> </div>
<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  EIGEN_DEVICE_FUNC</div>
<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  <span class="keyword">inline</span> Index rows()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> m_matrix.cols() / m_numBlocks.value(); }</div>
<div class="line"><a name="l00087"></a><span class="lineno"> 87</span>  <span class="comment">// return m_rows;</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>  EIGEN_DEVICE_FUNC</div>
<div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  <span class="keyword">inline</span> Index cols()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> m_matrix.rows() * m_numBlocks.value(); }</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>  EIGEN_DEVICE_FUNC</div>
<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  <span class="keyword">inline</span> Index numBlocks()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> m_numBlocks.value(); }</div>
<div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  <span class="comment">// return m_matrix.cols() / rows();</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="comment">/*</span></div>
<div class="line"><a name="l00097"></a><span class="lineno"> 97</span> <span class="comment"> inline Scalar coeff(Index rowId, Index colId) const</span></div>
<div class="line"><a name="l00098"></a><span class="lineno"> 98</span> <span class="comment"> {</span></div>
<div class="line"><a name="l00099"></a><span class="lineno"> 99</span> <span class="comment"> const Index r = colId % m_matrix.rows(); // actual row</span></div>
<div class="line"><a name="l00100"></a><span class="lineno"> 100</span> <span class="comment"> const Index c = (colId/m_matrix.rows()) * rows() + rowId; // actual col</span></div>
<div class="line"><a name="l00101"></a><span class="lineno"> 101</span> <span class="comment"> return m_matrix.coeff(r, c);</span></div>
<div class="line"><a name="l00102"></a><span class="lineno"> 102</span> <span class="comment"> }</span></div>
<div class="line"><a name="l00103"></a><span class="lineno"> 103</span> <span class="comment"> template<int LoadMode></span></div>
<div class="line"><a name="l00104"></a><span class="lineno"> 104</span> <span class="comment"> inline PacketScalar packet(Index rowId, Index colId) const</span></div>
<div class="line"><a name="l00105"></a><span class="lineno"> 105</span> <span class="comment"> {</span></div>
<div class="line"><a name="l00106"></a><span class="lineno"> 106</span> <span class="comment"> const Index r = colId % m_matrix.rows(); // actual row</span></div>
<div class="line"><a name="l00107"></a><span class="lineno"> 107</span> <span class="comment"> const Index c = (colId/m_matrix.rows()) * rows() + rowId; // actual col</span></div>
<div class="line"><a name="l00108"></a><span class="lineno"> 108</span> <span class="comment"> return m_matrix.template packet<LoadMode>(r, c);</span></div>
<div class="line"><a name="l00109"></a><span class="lineno"> 109</span> <span class="comment"> }</span></div>
<div class="line"><a name="l00110"></a><span class="lineno"> 110</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00111"></a><span class="lineno"> 111</span>  </div>
<div class="line"><a name="l00112"></a><span class="lineno"> 112</span>  EIGEN_DEVICE_FUNC</div>
<div class="line"><a name="l00113"></a><span class="lineno"> 113</span>  <span class="keyword">const</span> _MatrixTypeNested& nestedExpression()<span class="keyword"> const</span></div>
<div class="line"><a name="l00114"></a><span class="lineno"> 114</span> <span class="keyword"> </span>{ </div>
<div class="line"><a name="l00115"></a><span class="lineno"> 115</span>  <span class="keywordflow">return</span> m_matrix; </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> </div>
<div class="line"><a name="l00118"></a><span class="lineno"> 118</span>  <span class="keyword">protected</span>:</div>
<div class="line"><a name="l00119"></a><span class="lineno"> 119</span>  MatrixTypeNested m_matrix;</div>
<div class="line"><a name="l00120"></a><span class="lineno"> 120</span>  <span class="keyword">const</span> internal::variable_if_dynamic<Index, NumBlocks> m_numBlocks;</div>
<div class="line"><a name="l00121"></a><span class="lineno"> 121</span> };</div>
<div class="line"><a name="l00122"></a><span class="lineno"> 122</span> </div>
<div class="line"><a name="l00123"></a><span class="lineno"> 123</span> <span class="keyword">namespace </span>internal {</div>
<div class="line"><a name="l00124"></a><span class="lineno"> 124</span> <span class="keyword">template</span><<span class="keyword">typename</span> ArgType, <span class="keywordtype">int</span> NumBlocks> </div>
<div class="line"><a name="l00125"></a><span class="lineno"> 125</span> <span class="keyword">struct </span>unary_evaluator<<a class="code" href="classEigen_1_1BlockTranspose.html">BlockTranspose</a><ArgType, NumBlocks> ></div>
<div class="line"><a name="l00126"></a><span class="lineno"> 126</span>  : evaluator_base<BlockTranspose<ArgType, NumBlocks> ></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>  <span class="keyword">typedef</span> <a class="code" href="classEigen_1_1BlockTranspose.html">BlockTranspose<ArgType, NumBlocks></a> XprType;</div>
<div class="line"><a name="l00129"></a><span class="lineno"> 129</span>  <span class="keyword">typedef</span> <span class="keyword">typename</span> XprType::CoeffReturnType CoeffReturnType;</div>
<div class="line"><a name="l00130"></a><span class="lineno"> 130</span>  <span class="keyword">enum</span> {</div>
<div class="line"><a name="l00131"></a><span class="lineno"> 131</span>  Factor = (NumBlocks==Dynamic) ? Dynamic : NumBlocks*NumBlocks</div>
<div class="line"><a name="l00132"></a><span class="lineno"> 132</span>  };</div>
<div class="line"><a name="l00133"></a><span class="lineno"> 133</span>  <span class="keyword">typedef</span> <span class="keyword">typename</span> internal::nested_eval<ArgType,Factor>::type ArgTypeNested;</div>
<div class="line"><a name="l00134"></a><span class="lineno"> 134</span>  <span class="keyword">typedef</span> <span class="keyword">typename</span> internal::remove_all<ArgTypeNested>::type ArgTypeNestedCleaned;</div>
<div class="line"><a name="l00135"></a><span class="lineno"> 135</span>  </div>
<div class="line"><a name="l00136"></a><span class="lineno"> 136</span>  <span class="keyword">enum</span> {</div>
<div class="line"><a name="l00137"></a><span class="lineno"> 137</span>  CoeffReadCost = evaluator<ArgTypeNestedCleaned>::CoeffReadCost,</div>
<div class="line"><a name="l00138"></a><span class="lineno"> 138</span>  LinearAccessMask = XprType::IsVectorAtCompileTime ? LinearAccessBit : 0,</div>
<div class="line"><a name="l00139"></a><span class="lineno"> 139</span>  Flags = (evaluator<ArgTypeNestedCleaned>::Flags & (HereditaryBits|LinearAccessMask) & ~RowMajorBit) | (traits<XprType>::Flags & RowMajorBit),</div>
<div class="line"><a name="l00140"></a><span class="lineno"> 140</span>  </div>
<div class="line"><a name="l00141"></a><span class="lineno"> 141</span>  Alignment = evaluator<ArgTypeNestedCleaned>::Alignment</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> </div>
<div class="line"><a name="l00144"></a><span class="lineno"> 144</span>  EIGEN_DEVICE_FUNC <span class="keyword">explicit</span> unary_evaluator(<span class="keyword">const</span> XprType& xpr)</div>
<div class="line"><a name="l00145"></a><span class="lineno"> 145</span>  : m_arg(xpr.nestedExpression()),</div>
<div class="line"><a name="l00146"></a><span class="lineno"> 146</span>  m_argImpl(m_arg),</div>
<div class="line"><a name="l00147"></a><span class="lineno"> 147</span>  m_rows(xpr.nestedExpression().rows()),</div>
<div class="line"><a name="l00148"></a><span class="lineno"> 148</span>  m_cols(xpr.nestedExpression().cols()),</div>
<div class="line"><a name="l00149"></a><span class="lineno"> 149</span>  m_str(m_cols.value() / xpr.numBlocks())</div>
<div class="line"><a name="l00150"></a><span class="lineno"> 150</span>  {}</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>  EIGEN_DEVICE_FUNC EIGEN_STRONG_INLINE</div>
<div class="line"><a name="l00153"></a><span class="lineno"> 153</span>  CoeffReturnType coeff(Index rowId, Index colId)<span class="keyword"> const</span></div>
<div class="line"><a name="l00154"></a><span class="lineno"> 154</span> <span class="keyword"> </span>{</div>
<div class="line"><a name="l00155"></a><span class="lineno"> 155</span>  <span class="keyword">const</span> Index r = colId % m_rows.value(); <span class="comment">// actual row</span></div>
<div class="line"><a name="l00156"></a><span class="lineno"> 156</span>  <span class="keyword">const</span> Index c = (colId/m_rows.value()) * m_str + rowId; <span class="comment">// actual col</span></div>
<div class="line"><a name="l00157"></a><span class="lineno"> 157</span>  <span class="keywordflow">return</span> m_argImpl.coeff(r, c);</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>  </div>
<div class="line"><a name="l00160"></a><span class="lineno"> 160</span>  <span class="keyword">template</span><<span class="keywordtype">int</span> LoadMode, <span class="keyword">typename</span> PacketType></div>
<div class="line"><a name="l00161"></a><span class="lineno"> 161</span>  EIGEN_STRONG_INLINE</div>
<div class="line"><a name="l00162"></a><span class="lineno"> 162</span>  PacketType packet(Index rowId, Index colId)<span class="keyword"> const</span></div>
<div class="line"><a name="l00163"></a><span class="lineno"> 163</span> <span class="keyword"> </span>{</div>
<div class="line"><a name="l00164"></a><span class="lineno"> 164</span>  <span class="keyword">const</span> Index r = colId % m_rows.value(); <span class="comment">// actual row</span></div>
<div class="line"><a name="l00165"></a><span class="lineno"> 165</span>  <span class="keyword">const</span> Index c = (colId/m_rows.value()) * m_str + rowId; <span class="comment">// actual col</span></div>
<div class="line"><a name="l00166"></a><span class="lineno"> 166</span>  <span class="keywordflow">return</span> m_argImpl.template packet<LoadMode>(r, c);</div>
<div class="line"><a name="l00167"></a><span class="lineno"> 167</span>  }</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> <span class="keyword">protected</span>:</div>
<div class="line"><a name="l00170"></a><span class="lineno"> 170</span>  ArgTypeNested m_arg;</div>
<div class="line"><a name="l00171"></a><span class="lineno"> 171</span>  evaluator<ArgTypeNestedCleaned> m_argImpl;</div>
<div class="line"><a name="l00172"></a><span class="lineno"> 172</span>  <span class="keyword">const</span> variable_if_dynamic<Index, ArgType::RowsAtCompileTime> m_rows;</div>
<div class="line"><a name="l00173"></a><span class="lineno"> 173</span>  <span class="keyword">const</span> variable_if_dynamic<Index, ArgType::ColsAtCompileTime> m_cols;</div>
<div class="line"><a name="l00174"></a><span class="lineno"> 174</span>  <span class="keyword">const</span> Index m_str ;</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> </div>
<div class="line"><a name="l00177"></a><span class="lineno"> 177</span> } <span class="comment">// namespace internal</span></div>
<div class="line"><a name="l00178"></a><span class="lineno"> 178</span> </div>
<div class="line"><a name="l00182"></a><span class="lineno"> 182</span> <span class="keyword">template</span><<span class="keyword">typename</span> Derived></div>
<div class="line"><a name="l00183"></a><span class="lineno"> 183</span> <span class="keyword">const</span> <span class="keyword">typename</span> MatrixBase<Derived>::BlockTransposeReturnType</div>
<div class="line"><a name="l00184"></a><span class="lineno"> 184</span> MatrixBase<Derived>::blockTranspose(Index numBlocks)<span class="keyword"> const</span></div>
<div class="line"><a name="l00185"></a><span class="lineno"> 185</span> <span class="keyword"></span>{</div>
<div class="line"><a name="l00186"></a><span class="lineno"> 186</span>  <span class="keywordflow">return</span> BlockTranspose<Derived,Dynamic>(derived(),numBlocks);</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="l00189"></a><span class="lineno"> 189</span> </div>
<div class="line"><a name="l00190"></a><span class="lineno"> 190</span> }</div>
<div class="ttc" id="classEigen_1_1BlockTranspose_html"><div class="ttname"><a href="classEigen_1_1BlockTranspose.html">Eigen::BlockTranspose</a></div><div class="ttdoc">Expression of block-wise transposition of a tiled matrix. </div><div class="ttdef"><b>Definition:</b> BlockTranspose.h:55</div></div>
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