1 // This file is part of Eigen, a lightweight C++ template library 2 // for linear algebra. 3 // 4 // Copyright (C) 2008-2011 Gael Guennebaud <gael.guennebaud (at) inria.fr> 5 // 6 // This Source Code Form is subject to the terms of the Mozilla 7 // Public License v. 2.0. If a copy of the MPL was not distributed 8 // with this file, You can obtain one at http://mozilla.org/MPL/2.0/. 9 10 #ifndef EIGEN_TESTSPARSE_H 11 #define EIGEN_TESTSPARSE_H 12 13 #define EIGEN_YES_I_KNOW_SPARSE_MODULE_IS_NOT_STABLE_YET 14 15 #include "main.h" 16 17 #if EIGEN_GNUC_AT_LEAST(4,0) && !defined __ICC && !defined(__clang__) 18 19 #ifdef min 20 #undef min 21 #endif 22 23 #ifdef max 24 #undef max 25 #endif 26 27 #include <tr1/unordered_map> 28 #define EIGEN_UNORDERED_MAP_SUPPORT 29 namespace std { 30 using std::tr1::unordered_map; 31 } 32 #endif 33 34 #ifdef EIGEN_GOOGLEHASH_SUPPORT 35 #include <google/sparse_hash_map> 36 #endif 37 38 #include <Eigen/Cholesky> 39 #include <Eigen/LU> 40 #include <Eigen/Sparse> 41 42 enum { 43 ForceNonZeroDiag = 1, 44 MakeLowerTriangular = 2, 45 MakeUpperTriangular = 4, 46 ForceRealDiag = 8 47 }; 48 49 /* Initializes both a sparse and dense matrix with same random values, 50 * and a ratio of \a density non zero entries. 51 * \param flags is a union of ForceNonZeroDiag, MakeLowerTriangular and MakeUpperTriangular 52 * allowing to control the shape of the matrix. 53 * \param zeroCoords and nonzeroCoords allows to get the coordinate lists of the non zero, 54 * and zero coefficients respectively. 55 */ 56 template<typename Scalar,int Opt1,int Opt2,typename Index> void 57 initSparse(double density, 58 Matrix<Scalar,Dynamic,Dynamic,Opt1>& refMat, 59 SparseMatrix<Scalar,Opt2,Index>& sparseMat, 60 int flags = 0, 61 std::vector<Matrix<Index,2,1> >* zeroCoords = 0, 62 std::vector<Matrix<Index,2,1> >* nonzeroCoords = 0) 63 { 64 enum { IsRowMajor = SparseMatrix<Scalar,Opt2,Index>::IsRowMajor }; 65 sparseMat.setZero(); 66 //sparseMat.reserve(int(refMat.rows()*refMat.cols()*density)); 67 sparseMat.reserve(VectorXi::Constant(IsRowMajor ? refMat.rows() : refMat.cols(), int((1.5*density)*(IsRowMajor?refMat.cols():refMat.rows())))); 68 69 for(Index j=0; j<sparseMat.outerSize(); j++) 70 { 71 //sparseMat.startVec(j); 72 for(Index i=0; i<sparseMat.innerSize(); i++) 73 { 74 int ai(i), aj(j); 75 if(IsRowMajor) 76 std::swap(ai,aj); 77 Scalar v = (internal::random<double>(0,1) < density) ? internal::random<Scalar>() : Scalar(0); 78 if ((flags&ForceNonZeroDiag) && (i==j)) 79 { 80 v = internal::random<Scalar>()*Scalar(3.); 81 v = v*v + Scalar(5.); 82 } 83 if ((flags & MakeLowerTriangular) && aj>ai) 84 v = Scalar(0); 85 else if ((flags & MakeUpperTriangular) && aj<ai) 86 v = Scalar(0); 87 88 if ((flags&ForceRealDiag) && (i==j)) 89 v = numext::real(v); 90 91 if (v!=Scalar(0)) 92 { 93 //sparseMat.insertBackByOuterInner(j,i) = v; 94 sparseMat.insertByOuterInner(j,i) = v; 95 if (nonzeroCoords) 96 nonzeroCoords->push_back(Matrix<Index,2,1> (ai,aj)); 97 } 98 else if (zeroCoords) 99 { 100 zeroCoords->push_back(Matrix<Index,2,1> (ai,aj)); 101 } 102 refMat(ai,aj) = v; 103 } 104 } 105 //sparseMat.finalize(); 106 } 107 108 template<typename Scalar,int Opt1,int Opt2,typename Index> void 109 initSparse(double density, 110 Matrix<Scalar,Dynamic,Dynamic, Opt1>& refMat, 111 DynamicSparseMatrix<Scalar, Opt2, Index>& sparseMat, 112 int flags = 0, 113 std::vector<Matrix<Index,2,1> >* zeroCoords = 0, 114 std::vector<Matrix<Index,2,1> >* nonzeroCoords = 0) 115 { 116 enum { IsRowMajor = DynamicSparseMatrix<Scalar,Opt2,Index>::IsRowMajor }; 117 sparseMat.setZero(); 118 sparseMat.reserve(int(refMat.rows()*refMat.cols()*density)); 119 for(int j=0; j<sparseMat.outerSize(); j++) 120 { 121 sparseMat.startVec(j); // not needed for DynamicSparseMatrix 122 for(int i=0; i<sparseMat.innerSize(); i++) 123 { 124 int ai(i), aj(j); 125 if(IsRowMajor) 126 std::swap(ai,aj); 127 Scalar v = (internal::random<double>(0,1) < density) ? internal::random<Scalar>() : Scalar(0); 128 if ((flags&ForceNonZeroDiag) && (i==j)) 129 { 130 v = internal::random<Scalar>()*Scalar(3.); 131 v = v*v + Scalar(5.); 132 } 133 if ((flags & MakeLowerTriangular) && aj>ai) 134 v = Scalar(0); 135 else if ((flags & MakeUpperTriangular) && aj<ai) 136 v = Scalar(0); 137 138 if ((flags&ForceRealDiag) && (i==j)) 139 v = numext::real(v); 140 141 if (v!=Scalar(0)) 142 { 143 sparseMat.insertBackByOuterInner(j,i) = v; 144 if (nonzeroCoords) 145 nonzeroCoords->push_back(Matrix<Index,2,1> (ai,aj)); 146 } 147 else if (zeroCoords) 148 { 149 zeroCoords->push_back(Matrix<Index,2,1> (ai,aj)); 150 } 151 refMat(ai,aj) = v; 152 } 153 } 154 sparseMat.finalize(); 155 } 156 157 template<typename Scalar,int Options,typename Index> void 158 initSparse(double density, 159 Matrix<Scalar,Dynamic,1>& refVec, 160 SparseVector<Scalar,Options,Index>& sparseVec, 161 std::vector<int>* zeroCoords = 0, 162 std::vector<int>* nonzeroCoords = 0) 163 { 164 sparseVec.reserve(int(refVec.size()*density)); 165 sparseVec.setZero(); 166 for(Index i=0; i<refVec.size(); i++) 167 { 168 Scalar v = (internal::random<double>(0,1) < density) ? internal::random<Scalar>() : Scalar(0); 169 if (v!=Scalar(0)) 170 { 171 sparseVec.insertBack(i) = v; 172 if (nonzeroCoords) 173 nonzeroCoords->push_back(i); 174 } 175 else if (zeroCoords) 176 zeroCoords->push_back(i); 177 refVec[i] = v; 178 } 179 } 180 181 template<typename Scalar,int Options,typename Index> void 182 initSparse(double density, 183 Matrix<Scalar,1,Dynamic>& refVec, 184 SparseVector<Scalar,Options,Index>& sparseVec, 185 std::vector<int>* zeroCoords = 0, 186 std::vector<int>* nonzeroCoords = 0) 187 { 188 sparseVec.reserve(int(refVec.size()*density)); 189 sparseVec.setZero(); 190 for(int i=0; i<refVec.size(); i++) 191 { 192 Scalar v = (internal::random<double>(0,1) < density) ? internal::random<Scalar>() : Scalar(0); 193 if (v!=Scalar(0)) 194 { 195 sparseVec.insertBack(i) = v; 196 if (nonzeroCoords) 197 nonzeroCoords->push_back(i); 198 } 199 else if (zeroCoords) 200 zeroCoords->push_back(i); 201 refVec[i] = v; 202 } 203 } 204 205 206 #include <unsupported/Eigen/SparseExtra> 207 #endif // EIGEN_TESTSPARSE_H 208
