devtools/eigen
1
0
Fork 0
mirror of https://gitlab.com/libeigen/eigen.git synced 2026-04-10 11:34:33 +08:00
Code Issues Packages Projects Releases Wiki Activity

Clang-format tests, examples, libraries, benchmarks, etc.

Browse Source
This commit is contained in:
Antonio Sánchez
2023-12-05 21:22:55 +00:00
committed by Rasmus Munk Larsen
parent 3252ecc7a4
commit 46e9cdb7fe
876 changed files with 33453 additions and 37795 deletions
Download Patch File Download Diff File Expand all files Collapse all files

18
doc/examples/TutorialInplaceLU.cpp
View File

@@ -6,9 +6,8 @@ init init_obj;
// [init]
#include <Eigen/Dense>
int main()
{
Eigen::MatrixXd A(2,2);
int main() {
Eigen::MatrixXd A(2, 2);
A << 2, -1, 1, 3;
std::cout << "Here is the input matrix A before decomposition:\n" << A << "\n";
std::cout << "[init]\n";
@@ -23,8 +22,10 @@ int main()
std::cout << "[matrixLU]\n";
std::cout << "[solve]\n";
Eigen::MatrixXd A0(2,2); A0 << 2, -1, 1, 3;
Eigen::VectorXd b(2); b << 1, 2;
Eigen::MatrixXd A0(2, 2);
A0 << 2, -1, 1, 3;
Eigen::VectorXd b(2);
b << 1, 2;
Eigen::VectorXd x = lu.solve(b);
std::cout << "Residual: " << (A0 * x - b).norm() << "\n";
std::cout << "[solve]\n";
@@ -36,15 +37,15 @@ int main()
std::cout << "[modifyA]\n";
std::cout << "[recompute]\n";
A0 = A; // save A
A0 = A; // save A
lu.compute(A);
x = lu.solve(b);
std::cout << "Residual: " << (A0 * x - b).norm() << "\n";
std::cout << "[recompute]\n";
std::cout << "[recompute_bis0]\n";
Eigen::MatrixXd A1(2,2);
A1 << 5,-2,3,4;
Eigen::MatrixXd A1(2, 2);
A1 << 5, -2, 3, 4;
lu.compute(A1);
std::cout << "Here is the input matrix A1 after decomposition:\n" << A1 << "\n";
std::cout << "[recompute_bis0]\n";
@@ -53,5 +54,4 @@ int main()
x = lu.solve(b);
std::cout << "Residual: " << (A1 * x - b).norm() << "\n";
std::cout << "[recompute_bis1]\n";
}