mirror of
https://gitlab.com/libeigen/eigen.git
synced 2024-12-15 07:10:37 +08:00
37a50fa526
might be twice faster fot small fixed size matrix * added a sparse triangular solver (sparse version of inverseProduct) * various other improvements in the Sparse module
77 lines
1.9 KiB
C++
77 lines
1.9 KiB
C++
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#include <Eigen/Array>
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#include <Eigen/Sparse>
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#include <bench/BenchTimer.h>
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using namespace std;
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using namespace Eigen;
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USING_PART_OF_NAMESPACE_EIGEN
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#ifndef SIZE
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#define SIZE 1024
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#endif
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#ifndef DENSITY
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#define DENSITY 0.01
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#endif
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#ifndef SCALAR
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#define SCALAR float
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#endif
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typedef SCALAR Scalar;
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typedef Matrix<Scalar,Dynamic,Dynamic> DenseMatrix;
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typedef SparseMatrix<Scalar> EigenSparseMatrix;
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void fillMatrix(float density, int rows, int cols, EigenSparseMatrix& dst)
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{
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dst.startFill(rows*cols*density);
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for(int j = 0; j < cols; j++)
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{
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for(int i = 0; i < rows; i++)
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{
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Scalar v = (ei_random<float>(0,1) < density) ? ei_random<Scalar>() : 0;
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if (v!=0)
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dst.fill(i,j) = v;
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}
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}
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dst.endFill();
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}
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void eiToDense(const EigenSparseMatrix& src, DenseMatrix& dst)
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{
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dst.setZero();
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for (int j=0; j<src.cols(); ++j)
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for (EigenSparseMatrix::InnerIterator it(src.derived(), j); it; ++it)
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dst(it.index(),j) = it.value();
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}
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#ifndef NOGMM
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#include "gmm/gmm.h"
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typedef gmm::csc_matrix<Scalar> GmmSparse;
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typedef gmm::col_matrix< gmm::wsvector<Scalar> > GmmDynSparse;
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void eiToGmm(const EigenSparseMatrix& src, GmmSparse& dst)
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{
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GmmDynSparse tmp(src.rows(), src.cols());
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for (int j=0; j<src.cols(); ++j)
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for (EigenSparseMatrix::InnerIterator it(src.derived(), j); it; ++it)
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tmp(it.index(),j) = it.value();
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gmm::copy(tmp, dst);
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}
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#endif
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#ifndef NOMTL
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#include <boost/numeric/mtl/mtl.hpp>
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typedef mtl::compressed2D<Scalar, mtl::matrix::parameters<mtl::tag::col_major> > MtlSparse;
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typedef mtl::compressed2D<Scalar, mtl::matrix::parameters<mtl::tag::row_major> > MtlSparseRowMajor;
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void eiToMtl(const EigenSparseMatrix& src, MtlSparse& dst)
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{
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mtl::matrix::inserter<MtlSparse> ins(dst);
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for (int j=0; j<src.cols(); ++j)
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for (EigenSparseMatrix::InnerIterator it(src.derived(), j); it; ++it)
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ins[it.index()][j] = it.value();
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}
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#endif
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