Rasmus Munk LarsenandRasmus Munk Larsen
8a3d61c790
libeigen/eigen!2509 Closes #2868 Co-authored-by: Rasmus Munk Larsen <rmlarsen@gmail.com>
13 lines
497 B
C++
13 lines
497 B
C++
// SPDX-FileCopyrightText: The Eigen Authors
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// SPDX-License-Identifier: MPL-2.0
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SparseMatrix<double> A(3, 3);
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A.insert(1, 2) = 0;
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A.insert(0, 1) = 1;
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A.insert(2, 0) = 2;
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A.makeCompressed();
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cout << "The matrix A is:" << endl << MatrixXd(A) << endl;
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cout << "it has " << A.nonZeros() << " stored non zero coefficients that are: " << A.coeffs().transpose() << endl;
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A.coeffs() += 10;
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cout << "After adding 10 to every stored non zero coefficient, the matrix A is:" << endl << MatrixXd(A) << endl;
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