/usr/include/shogun/mathematics/eigen3.h is in libshogun-dev 3.2.0-7.3build4.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 | /*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* Copyright (C) 2012 Sergey Lisitsyn
*/
#ifndef EIGEN3_H_
#define EIGEN3_H_
#include <shogun/lib/config.h>
#ifdef HAVE_EIGEN3
//#define EIGEN_RUNTIME_NO_MALLOC
#include <Eigen/Eigen>
#include <Eigen/Dense>
#if EIGEN_VERSION_AT_LEAST(3,0,93)
#include <Eigen/Sparse>
#else
#define EIGEN_YES_I_KNOW_SPARSE_MODULE_IS_NOT_STABLE_YET
#include <unsupported/Eigen/SparseExtra>
#ifndef DOXYGEN_SHOULD_SKIP_THIS
// Triplet definition for Eigen3 backword compatibility
namespace Eigen {
template <typename T> struct Triplet
{
Triplet(index_t colIndex, index_t rowIndex, T valueT) :
ecol(colIndex), erow(rowIndex), evalue(valueT)
{
}
index_t col() const { return ecol; };
index_t row() const { return erow; };
T value() const { return evalue; };
index_t ecol;
index_t erow;
T evalue;
};
// SimplicialLLT definition for Eigen3 backword compatibility
template <typename T> class SimplicialLLT
: public SimplicialCholesky<T,Lower>
{
public:
SimplicialLLT()
{
SimplicialCholesky<T>::setMode(SimplicialCholeskyLLt);
}
inline const T matrixL()
{
return SimplicialCholesky<T>::m_matrix;
}
inline const T matrixU()
{
return SimplicialCholesky<T>::m_matrix.transpose();
}
};
}
#endif //DOXYGEN_SHOULD_SKIP_THIS
#endif //EIGEN_VERSION_AT_LEAST(3,0,93)
namespace shogun
{
template<class T> class SGSparseMatrix;
/** @brief This class contains some utilities for Eigen3 Sparse Matrix
* integration with shogun. Currently it provides a method for
* converting SGSparseMatrix to Eigen3 SparseMatrix.
*/
template<typename T> class EigenSparseUtil
{
public:
/** Converts a SGSparseMatrix to Eigen3 SparseMatrix by copying
* its non-zero co-efficients to a eigen3 SparseMatrix.
*
* @param sg_matrix the SGSparseMatrix
* @return Eigen3 SparseMatrix representation of sg_matrix
*/
static Eigen::SparseMatrix<T> toEigenSparse(SGSparseMatrix<T> sg_matrix);
};
}
#endif //HAVE_EIGEN3
#endif
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